Cast iron sleeve rotary flange connecting pipe fitting

Abstract

The utility model discloses a cast iron sleeve rotary flange connecting pipe fitting, particularly relates to the technical field of cast iron pipe fitting connection, and comprises a cast iron pipe fitting, one end of the cast iron pipe fitting is provided with a sleeve connecting assembly, and the other end of the cast iron pipe fitting is provided with a flange connecting assembly; the sleeve connecting assembly comprises a pipe sleeve, the pipe sleeve is fixed to one end of the cast iron pipe, a connecting sleeve is mounted on one side of the pipe sleeve, a sealing rubber ring is mounted between the pipe sleeve and the connecting sleeve, and first threaded holes are formed in the surfaces of one sides of the pipe sleeve, the connecting sleeve and the sealing rubber ring. By arranging the sleevelet connecting assembly and the flange connecting assembly, tight connection between the pipe fitting and cast iron pipes and between the pipe fitting and other flange parts is ensured, the leakage problem in the drainage process is effectively prevented, the overall reliability of a drainage system is improved, and the drainage system is suitable for connection of different types of cast iron drainage pipes; a B-type connection cast iron drainage pipe is converted into a flange connection mode, and the applicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of cast iron pipe fittings connection, and more specifically, the utility model relates to a cast iron sleeve-to-flange connection pipe fitting. Background Art

[0002] In building installation projects, cast iron drainage pipes are mainly applied to drainage systems. At present, the commonly used connection methods of cast iron drainage pipes in China are non-socket W type, flange mechanical type A, and double flange mechanical type B. Each has a set of self-contained pipe fitting libraries. With the continuous development of science and technology, it is often necessary to install special-purpose components such as flange valves and flange seismic flexible pipes on drainage pipes in projects. In addition, in some engineering designs, the drainage pipes in the outdoor buried part are made of PE material and need to be converted to cast iron pipes indoors through flanges to avoid damage to the system use function due to later settlement.

[0003] For cast iron drainage pipes connected by W type and A type, there is already a cast iron flange short pipe on the market that can be purchased and used directly. However, for B type connection, there is no pipe fitting that can directly convert the sleeve to a flange on the market. Therefore, a cast iron sleeve-to-flange connection pipe fitting is proposed. Summary of the Utility Model

[0004] In order to overcome the problems and defects in the prior art, the utility model provides a cast iron sleeve-to-flange connection pipe fitting to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a cast iron sleeve-to-flange connection pipe fitting, including a cast iron pipe fitting, one end of the cast iron pipe fitting is provided with a sleeve connection assembly, and the other end of the cast iron pipe fitting is provided with a flange connection assembly;

[0006] The sleeve connection assembly includes a pipe fitting sleeve, the pipe fitting sleeve is fixed at one end of the cast iron pipe fitting, a connection sleeve is installed on one side of the pipe fitting sleeve, a sealing rubber ring is installed between the pipe fitting sleeve and the connection sleeve, first threaded holes are opened on the surface of one side of the pipe fitting sleeve, the connection sleeve and the sealing rubber ring, first installation bolts are threadedly connected inside the first threaded holes, nuts are threadedly connected outside the first installation bolts, and a connection pipe is fixedly connected to one side of the connection sleeve.

[0007] Preferably, the flange connection assembly includes a first flange, the first flange is fixed at one end of the cast iron pipe fitting, a second flange is arranged on one side of the first flange, and a second installation bolt is fixedly connected to one end of the second flange.

[0008] Preferably, a sealing ring is installed between the first flange and the second flange, and second threaded holes are opened on the surface of one side of the first flange, the second flange and the sealing ring.

[0009] Preferably, a second mounting bolt is threadedly connected inside the second threaded hole, and a fixing nut is threadedly connected outside the second mounting bolt.

[0010] Preferably, the inner diameter dimensions of the pipe fitting sleeve and the connecting sleeve match the outer diameter dimensions of the cast iron pipe fitting.

[0011] Preferably, the material of the connecting pipe is the same as that of the cast iron pipe fitting, and the outer diameter dimensions of the connecting pipe are adapted to the inner diameter dimensions of the connecting sleeve.

[0012] Preferably, anti-corrosion coatings are applied on both the inner and outer surfaces of the cast iron pipe fitting, and both the nut and the fixing nut are lock nuts.

[0013] The technical effects and advantages of the present utility model:

[0014] 1. By providing a sleeve connection assembly and a flange connection assembly, the tight connection between the pipe fitting, the cast iron pipe, and other flange components is ensured, effectively preventing leakage problems during the drainage process, improving the overall reliability of the drainage system, being applicable to the connection of different types of cast iron drainage pipes, converting the B-type connection cast iron drainage pipes into a flange connection method, with higher applicability;

[0015] 2. Through the sealing rubber ring and the sealing ring of the pipe fitting, liquid leakage can be effectively prevented, reducing the waste of water resources. The use of high-quality cast iron materials and anti-corrosion coatings prolongs the service life of the pipe fitting, reduces the replacement frequency, and reduces the impact on the environment. At the same time, the flange connection part of the pipe fitting can be conveniently connected to these components, improving the flexibility and scalability of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 is a schematic diagram of the structure at the connection between the connecting pipe and the fixed pipe of the present utility model.

[0018] Figure 3 is a schematic diagram of the outer side structure of the cast iron pipe fitting of the present utility model.

[0019] Figure 4 is of the present utility model Figure 3 rear view structure schematic diagram.

[0020] Figure 5 is a schematic diagram of the partial cross-sectional structure of the present utility model.

[0021] The reference numerals are: 1, cast iron pipe fitting; 2, pipe fitting sleeve; 3, connecting sleeve; 4, sealing rubber ring; 5, first threaded hole; 6, connecting pipe; 7, first mounting bolt; 8, nut; 9, first flange; 10, second flange; 11, sealing ring; 12, second threaded hole; 13, fixed pipe; 14, second mounting bolt; 15, fixing nut. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As shown in the attached Figures 1-5 A cast iron sleeve-to-flange connecting pipe fitting as shown, comprising a cast iron pipe fitting 1, a sleeve connecting assembly is arranged at one end of the cast iron pipe fitting 1, and a flange connecting assembly is arranged at the other end of the cast iron pipe fitting 1;

[0024] The sleeve connecting assembly includes a pipe fitting sleeve 2, the pipe fitting sleeve 2 is fixed at one end of the cast iron pipe fitting 1, a connecting sleeve 3 is installed on one side of the pipe fitting sleeve 2, a sealing rubber ring 4 is installed between the pipe fitting sleeve 2 and the connecting sleeve 3, first threaded holes 5 are opened on the surfaces of one sides of the pipe fitting sleeve 2, the connecting sleeve 3 and the sealing rubber ring 4, a first mounting bolt 7 is threadedly connected inside the first threaded hole 5, a nut 8 is threadedly connected outside the first mounting bolt 7, and a connecting pipe 6 is fixedly connected to one side of the connecting sleeve 3.

[0025] As shown in the attached Figures 1-5 As shown, the flange connecting assembly includes a first flange 9, the first flange 9 is fixed at one end of the cast iron pipe fitting 1, a second flange 10 is arranged on one side of the first flange 9, a second mounting bolt 14 is fixedly connected to one end of the second flange 10, a sealing ring 11 is installed between the first flange 9 and the second flange 10, second threaded holes 12 are opened on the surfaces of one sides of the first flange 9, the second flange 10 and the sealing ring 11, a second mounting bolt 14 is threadedly connected inside the second threaded hole 12, and a fixing nut 15 is threadedly connected outside the second mounting bolt 14, which is convenient for flange connection with other pipe fittings and facilitates the realization of the sleeve-to-flange connection method.

[0026] As shown in the attached Figures 1-4 As shown, the inner diameter dimensions of the pipe fitting sleeve 2 and the connecting sleeve 3 match the outer diameter dimensions of the cast iron pipe fitting 1. The matching of the inner and outer diameter dimensions can make the pipe fitting sleeve 2 and the connecting sleeve 3 fit tightly with the cast iron pipe fitting 1, avoid gaps, and thus prevent liquid or gas leakage.

[0027] As shown in the attachedFigure 1 , 2 As shown in Figure 5, the material of the connecting pipe 6 is the same as that of the cast iron pipe fitting 1, and the outer diameter of the connecting pipe 6 is adapted to the inner diameter of the connecting sleeve 3. The same material of the connecting pipe 6 and the cast iron pipe fitting 1 can ensure the material uniformity of the whole pipeline, avoid problems such as corrosion and different expansion coefficients caused by material differences, and improve the durability of the pipeline system.

[0028] As shown in the appendix Figures 1-5 , the inner and outer surfaces of the cast iron pipe fitting 1 are coated with an anti-corrosion coating, and both the nut 8 and the fixing nut 15 are lock nuts. The anti-corrosion coating can effectively prevent the cast iron pipe fitting 1 from being corroded, reduce the damage of the pipe fitting caused by corrosion, and extend the service life of the cast iron pipe fitting 1. The lock fixing nut 15 can ensure that the installation bolt does not loosen during use, and ensure the firmness and stability of the pipe fitting connection.

[0029] Working principle of the utility model: A cast iron sleeve to flange connection pipe fitting provided by the utility model, during use, the pipe fitting sleeve 2 is fixed at one end of the cast iron pipe fitting 1. When it is necessary to connect with other pipelines, the connecting sleeve 3 is sleeved on the cast iron pipe fitting 1 and aligned with the pipe fitting sleeve 2. A sealing rubber ring 4 is installed between the pipe fitting sleeve 2 and the connecting sleeve 3. The sealing rubber ring 4 plays a sealing role to prevent liquid or gas leakage. The pipe fitting sleeve 2, the connecting sleeve 3 and one side surface of the sealing rubber ring 4 are all provided with first threaded holes 5. By screwing the first installation bolt 7 into the first threaded hole 5 and threadedly connecting a nut 8 outside the first installation bolt 7, the pipe fitting sleeve 2 and the connecting sleeve 3 are tightly connected together to ensure the firmness and tightness of the connection. One side of the connecting sleeve 3 is fixedly connected with a connecting pipe 6, and the connecting pipe 6 can be connected with other pipelines.

[0030] Working principle of the flange connection assembly: The first flange 9 is fixed at the other end of the cast iron pipe fitting 1. When it is necessary to connect with a flange component, the second flange 10 is aligned with the first flange 9. A sealing ring 11 is installed between the first flange 9 and the second flange 10. The sealing ring 11 plays a sealing role to prevent liquid or gas leakage. The first flange 9, the second flange 10 and one side surface of the sealing ring 11 are all provided with second threaded holes 12. The second installation bolt 14 is screwed into the second threaded hole 12 and a fixing nut 15 is threadedly connected outside the second installation bolt 14, so that the first flange 9 and the second flange 10 are tightly connected together to achieve flange connection, thereby realizing the conversion of B-type connected cast iron drainage pipes to flange connection mode.

[0031] Finally: The above embodiments are only illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A cast iron sleeve-to-flange connection pipe fitting, comprising a cast iron pipe fitting (1), characterized in that: One end of the cast iron pipe fitting (1) is provided with a sleeve connection assembly, and the other end of the cast iron pipe fitting (1) is provided with a flange connection assembly; The sleeve connection assembly includes a pipe fitting sleeve (2), the pipe fitting sleeve (2) is fixed to one end of the cast iron pipe fitting (1), a connecting sleeve (3) is installed on one side of the pipe fitting sleeve (2), a sealing rubber ring (4) is installed between the pipe fitting sleeve (2) and the connecting sleeve (3), first threaded holes (5) are formed on the surfaces of one sides of the pipe fitting sleeve (2), the connecting sleeve (3) and the sealing rubber ring (4), a first installation bolt (7) is threadedly connected inside the first threaded hole (5), a nut (8) is threadedly connected to the outside of the first installation bolt (7), and a connecting pipe (6) is fixedly connected to one side of the connecting sleeve (3).

2. The cast iron cuff to flange connection pipe fitting according to claim 1, wherein: The flange connection assembly includes a first flange (9), the first flange (9) is fixed to one end of the cast iron pipe fitting (1), a second flange (10) is arranged on one side of the first flange (9), and a second installation bolt (14) is fixedly connected to one end of the second flange (10).

3. The cast iron cuff-to-flange connecting pipe fitting according to claim 2, characterized in that: A sealing ring (11) is installed between the first flange (9) and the second flange (10), and second threaded holes (12) are formed on the surfaces of one sides of the first flange (9), the second flange (10) and the sealing ring (11).

4. The cast iron cuff to flange connection pipe fitting according to claim 3, characterized in that: A second installation bolt (14) is threadedly connected inside the second threaded hole (12), and a fixing nut (15) is threadedly connected to the outside of the second installation bolt (14).

5. The cast iron cuff to flange connection pipe fitting according to claim 1, characterized in that: The inner diameter dimensions of the pipe fitting sleeve (2) and the connecting sleeve (3) match the outer diameter dimensions of the cast iron pipe fitting (1).

6. The cast iron cuff-to-flange connecting pipe fitting according to claim 1, characterized in that: The material of the connecting pipe (6) is the same as that of the cast iron pipe fitting (1), and the outer diameter dimensions of the connecting pipe (6) are adapted to the inner diameter dimensions of the connecting sleeve (3).

7. The cast iron cuff to flange connection pipe fitting according to claim 1, wherein: Anti-corrosion coatings are applied to the inner and outer surfaces of the cast iron pipe fitting (1), and the nut (8) and the fixing nut (15) are both anti-loosening nuts.

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