Spherical hinge rotary joint for water pipe of furnace cover of electric furnace

Abstract

The utility model provides an electric furnace cover water pipe spherical hinge rotary joint, which belongs to the technical field of water pipe joints and comprises a spherical hinge connecting pipe and a water pipe connecting pipe, one end of the spherical hinge connecting pipe is used for being fixedly connected with an electric furnace cover, and the other end of the spherical hinge connecting pipe is connected with the water pipe connecting pipe. A mounting cavity is formed in the spherical hinge connecting pipe; two ends of the water pipe connecting pipe are respectively a ball pipe section and a straight pipe section; the outer wall of the spherical pipe section is hinged to the mounting cavity through a sealing device, the straight pipe section is used for being connected with a water pipe, and the spherical hinge connecting pipe is hinged to the water pipe connecting pipe, so that the water pipe connecting pipe and the water pipe connected with the water pipe can swing in multiple directions within a certain range, and displacement of the furnace cover water pipe caused by movement of the furnace cover can be effectively absorbed; stress concentration is reduced, pull crack and water leakage are avoided, the service life of the water pipe and the electric furnace cover water pipe spherical hinge rotary joint is prolonged, the stability and continuity of electric furnace operation are improved, and the maintenance cost and time are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water pipe joint, especially relates to a water pipe ball hinge rotary joint of electric furnace cover. BACKGROUND

[0002] In the electric furnace smelting process, the cover needs to be frequently opened and closed to adapt to the charging, tapping and other operations. The cover is usually equipped with a cooling water pipe to ensure the stable operation of the cover in a high temperature environment. The traditional cover inlet and return water rotary joint design mainly meets the rotation requirements of the cover, but in actual operation, the cover water pipe not only rotates with the cover, but also produces small displacements forward and backward and left and right due to the lifting, tilting and other actions of the cover. This displacement causes the rotary joint to bear additional stress, and over time, the joint is prone to cracking and water leakage, and in severe cases, the water pipe may even break, seriously affecting production efficiency and equipment safety. SUMMARY

[0003] In view of the above problems in the prior art, the utility model aims to provide a water pipe ball hinge rotary joint of electric furnace cover, which solves the problem that the traditional cover inlet and return water rotary joint only considers the rotation requirements of the cover and cannot meet the displacement requirements of the cover.

[0004] In order to achieve the above utility model purposes, the utility model adopts the following technical scheme:

[0005] A water pipe ball hinge rotary joint of electric furnace cover is provided, comprising a ball hinge connecting pipe and a water pipe connecting pipe, one end of the ball hinge connecting pipe is used for connecting with the cover inlet pipe, the other end of the ball hinge connecting pipe is connected with the water pipe connecting pipe, and an installation cavity is arranged in the ball hinge connecting pipe;

[0006] The two ends of the water pipe connecting pipe are respectively a spherical pipe section and a straight pipe section; the outer wall of the spherical pipe section is hinged to the installation cavity through a sealing device, and the straight pipe section is used for fixedly connecting with the electric furnace cover.

[0007] The water pipe ball hinge rotary joint of electric furnace cover in the utility model is hinged between the ball hinge connecting pipe and the water pipe connecting pipe, so that the ball hinge connecting pipe and the cover inlet pipe connected therewith can swing in multiple directions within a certain range, effectively absorbing the displacement of the cover inlet pipe caused by the movement of the cover, reducing stress concentration, avoiding cracking and water leakage, prolonging the service life of the water pipe and the water pipe ball hinge rotary joint of electric furnace cover, improving the stability and continuity of electric furnace operation, and reducing maintenance cost and time. The sealing device is made of elastic material, which ensures that the water pipe connecting pipe can still maintain good sealing effect under various swing angles, preventing water leakage.

[0008] Further, one end of the ball hinge connecting pipe is provided with a first connecting flange for connecting with the cover inlet pipe, facilitating the connection and fixation between the ball hinge connecting pipe and the electric furnace cover.

[0009] Further, the straight pipe section is provided with a second connecting flange for fixed connection with the electric furnace cover, facilitating the connection and fixation between the water pipe connecting pipe and the water pipe.

[0010] Further, one side of the installation cavity is connected with the other side of the ball hinge connecting pipe, the sealing device comprises two spaced sealing rings, the outer wall of the outer ring of each sealing ring is fixedly connected with the inner wall of the installation cavity, and the inner wall of the inner ring of the sealing ring is in close contact with the outer wall of the spherical pipe section. The sealing ring is used for sealing the gap between the installation cavity and the spherical pipe section to prevent water leakage.

[0011] Further, the electric furnace cover water pipe ball hinge rotary joint further comprises a pressing device, the pressing device comprises a pressing member and a fixing member, the pressing member comprises a mounting plate sleeved on the circumferential outer wall of the straight pipe section, a plurality of first mounting holes are uniformly arranged in the annular space of the outer edge of the mounting plate, a pressing ring is protrusively arranged on the side wall of the mounting plate close to the spherical pipe section, the inner ring diameter of the pressing ring is smaller than the outer diameter of the spherical pipe section, and the pressing end of the pressing ring is in close contact with the end face of one of the sealing rings through the installation cavity; the fixing member comprises a connecting plate arranged on the circumferential outer wall of the other end of the ball hinge connecting pipe, a plurality of second mounting holes are arranged on the connecting plate, the second mounting holes and the first mounting holes have one-to-one correspondence, and the corresponding first mounting hole and the second mounting hole are fixedly connected through a bolt connecting piece. The arrangement of the pressing device makes the hinge connection between the water pipe connecting pipe and the ball hinge connecting pipe stable, and avoids the falling of the water pipe connecting pipe.

[0012] Further, the ball hinge connecting pipe and the water pipe connecting pipe are both in the structure of a circular pipe; the first connecting flange, the second connecting flange, the mounting plate and the connecting plate are all in the structure of a circle.

[0013] The electric furnace cover water pipe ball hinge rotary joint has the advantages that the ball hinge connecting pipe and the water pipe connecting pipe are hingedly connected, the adaptability of the rotary joint to the displacement of the furnace cover water pipe is significantly improved, the cracking and water leakage caused by displacement are reduced, the service life of the water pipe and the joint is prolonged, the production interruption caused by water pipe damage is effectively avoided, and the stability and continuity of electric furnace operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an internal assembly sectional view structure diagram of the electric furnace cover water pipe ball hinge rotary joint.

[0015] Among them, 1, ball hinge connecting pipe; 2, water pipe connecting pipe; 201, spherical pipe section; 202, straight pipe section; 3, installation cavity; 4, first connecting flange; 5, second connecting flange; 6, sealing ring; 7, mounting plate; 8, first mounting hole; 9, pressing ring; 10, connecting plate; 11, second mounting hole. DETAILED DESCRIPTION

[0016] The specific embodiments of the utility model are described below to make those skilled in the art understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific embodiments, and for those skilled in the art, it is obvious that various changes are within the spirit and scope of the utility model defined and determined by the appended claims, and all the invention and creation using the concept of the utility model are within the scope of protection.

[0017] As Figure 1 The utility model provides a kind of electric furnace cover water pipe ball hinge rotary joint, it includes ball hinge connecting pipe 1 and water pipe connecting pipe 2, one end of ball hinge connecting pipe 1 is used to connect with furnace cover water inlet pipe, specifically, one end of ball hinge connecting pipe 1 is provided with the first connecting flange 4 for being connected with furnace cover water inlet pipe, it is convenient for the connecting and fixing between ball hinge connecting pipe 1 and furnace cover water inlet pipe, the other end of ball hinge connecting pipe 1 is connected with water pipe connecting pipe 2, the inside of ball hinge connecting pipe 1 is provided with installation cavity 3.

[0018] Two ends of water pipe connecting pipe 2 are respectively round ball pipe section 201 and straight pipe section 202;The outer wall of round ball pipe section 201 is hinged with installation cavity 3 by sealing device, and straight pipe section 202 is used to be fixedly connected with electric furnace cover.Detailedly, second connecting flange 5 for being fixedly connected with electric furnace cover is arranged on straight pipe section 202, it is convenient for the connecting and fixing between water pipe connecting pipe 2 and electric furnace cover.

[0019] Preferably but not limitedly, as a kind of specific setting mode of sealing device, one side of installation cavity 3 is connected with the other side of ball hinge connecting pipe 1, sealing device includes two interval arranged sealing rings 6, the outer wall of the outer circle of each sealing ring 6 is fixedly connected with the inner wall of installation cavity 3, and the inner wall of the inner circle of sealing ring 6 is in close contact with the outer wall of round ball pipe section 201.Sealing ring 6 is used to seal the gap between installation cavity 3 and round ball pipe section 201, to prevent water leakage.

[0020] Specifically, the electric furnace cover water pipe ball hinge rotary joint further comprises a pressing device, the pressing device comprises a pressing part and a fixing part, the pressing part comprises a mounting plate 7 sleeved on the outer wall of the straight pipe section 202, a plurality of first mounting holes 8 are uniformly arranged in the annular space of the outer edge of the mounting plate 7, a pressing ring 9 is protrusively arranged on the side wall of the mounting plate 7 close to the direction of the spherical pipe section 201, the inner diameter of the pressing ring 9 is smaller than the outer diameter of the spherical pipe section 201, and the pressing end of the pressing ring 9 is in abutting contact with the end surface of the left sealing ring 6 through the mounting cavity 3; the fixing part comprises a connecting plate 10 arranged on the outer wall of the other end of the ball hinge connecting pipe 1, a plurality of second mounting holes 11 are arranged on the connecting plate 10, the second mounting holes 11 and the first mounting holes 8 are in one-to-one correspondence, and the corresponding first mounting hole 8 and the second mounting hole 11 are fixedly connected through a bolt connecting piece. The arrangement of the pressing device makes the hinge connection between the water pipe connecting pipe 2 and the ball hinge connecting pipe 1 stable, and avoids the falling of the water pipe connecting pipe 2.

[0021] In the specific embodiment, the ball hinge connecting pipe 1 and the water pipe connecting pipe 2 are both in a circular pipe structure; the first connecting flange 4, the second connecting flange 5, the mounting plate 7 and the connecting plate 10 are all in a circular structure.

[0022] In summary, the electric furnace cover water pipe ball hinge rotary joint in the utility model realizes the hinge connection between the ball hinge connecting pipe 1 and the water pipe connecting pipe 2, so that the water pipe connecting pipe 2 and the water pipe connected therewith can swing in multiple directions within a certain range, the displacement of the furnace cover water pipe caused by the movement of the furnace cover can be effectively absorbed, stress concentration can be reduced, the water pipe can be prevented from being pulled and cracked and leaking, the service life of the water pipe and the electric furnace cover water pipe ball hinge rotary joint is prolonged, production interruption caused by water pipe damage can be effectively avoided, the stability and continuity of electric furnace operation are improved, and the maintenance cost and time are reduced.

Claims

1. A ball joint rotary joint for water pipes of an electric furnace cover, characterized in that: It includes a ball joint connecting pipe and a water pipe connecting pipe, one end of the ball joint connecting pipe is used to connect to the water inlet pipe of the furnace cover, and the other end of the ball joint connecting pipe is connected to the water pipe connecting pipe, and an installation cavity is provided inside the ball joint connecting pipe; The two ends of the water pipe connecting pipe are respectively a spherical pipe section and a straight pipe section; the outer wall of the spherical pipe section is hinged to the installation cavity through a sealing device, and the straight pipe section is used to be fixedly connected to the electric furnace cover.

2. The electric furnace cover water pipe ball joint rotary joint according to claim 1, characterized in that: One end of the ball joint connecting pipe is provided with a first connecting flange for connecting to the furnace cover water inlet pipe.

3. The electric furnace cover water pipe ball joint rotary joint according to claim 2, characterized in that: The straight pipe section is provided with a second connecting flange for fixed connection with the electric furnace cover.

4. The electric furnace cover water pipe ball joint rotary joint according to claim 3, characterized in that: One side of the installation cavity is connected to the other side of the ball joint connecting tube, and the sealing device includes two sealing rings arranged at intervals. The outer wall of the outer ring of each sealing ring is fixedly connected to the inner wall of the installation cavity, and the inner wall of the inner ring of the sealing ring is in tight contact with the outer wall of one end of the spherical tube section.

5. The electric furnace cover water pipe ball joint rotary joint according to claim 4, characterized in that: It also includes a clamping device, which includes a clamping part and a fixing part. The clamping part includes a mounting plate sleeved on the circumferential outer wall of the straight pipe section, and a plurality of first mounting holes are evenly arranged at annular intervals on the outer edge of the mounting plate. A circle of clamping ring is raised on the side wall of the mounting plate close to the spherical pipe section. The inner ring diameter of the clamping ring is smaller than the outer diameter of the spherical pipe section, and the clamping end of the clamping ring passes through the mounting cavity and is in tight contact with the end face of one of the sealing rings; the fixing part includes a connecting plate arranged on the circumferential outer wall of the other end of the ball hinge connecting pipe, and a plurality of second mounting holes are arranged on the connecting plate. The second mounting holes are in a one-to-one correspondence with the first mounting holes, and the corresponding first mounting holes and second mounting holes are fixedly connected by bolt connectors.

6. The electric furnace cover water pipe ball joint rotary joint according to claim 5, characterized in that: The ball joint connecting pipe and the water pipe connecting pipe are both circular tube structures; the first connecting flange, the second connecting flange, the mounting plate and the connecting plate are all circular structures.

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