Water-gas rotary joint device
By designing the semi -enclosed structure and star sealing circle of the core shaft and shell, the problem of the existing water and gas rotation joint device is low and the sealing function is not good. And reduce the manufacturing cost.
Patent Information
- Application Number
- CN202421074304.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The internal and external half-shells of the existing water-gas rotary joint devices have low strength, high manufacturing cost, and poor sealing function, resulting in water and gas leakage, reduced rotational accuracy and short service life.
A water and gas rotation joint device is designed. The semi -enclosed structure of the core shaft and the shell is used. The core shaft is equipped with a water flow channel and a air flow channel. , Avoid the use of additional alien components and reduce manufacturing costs.
It improves the closedness and rotation accuracy of the water and gas rotation joints, extend the service life, reduce production costs, and effectively prevent the leakage of water and gas, ensuring the stable water fog scan function of the iron mouth machine.
Smart Images
Figure CN222411650U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of blast furnace equipment, and in particular to a water-gas rotary joint device. Background Art
[0002] The large taphole opening machines used in the iron-making yard are all equipped with a water mist blowing function, which can effectively improve the drilling effect of the drill bit on the waterless taphole mud and reduce the consumption of drilling tools. As an important device for the water mist blowing function, the water-gas connector can rotate with the taphole opening machine, allowing water and gas media to enter from one end of the device and flow out from the other end through rotation and reversal, ensuring that the water mist blowing function of the taphole opening machine continues to work.
[0003] At present, the water-gas rotating device is fixed on the upper part of the rotating center of the taphole opening machine, and is connected by a hard pipe between the column and the rotating arm. The rotation of the rotating arm drives the outer half shell of the water-gas rotating device to rotate, so that the water-gas channel rotates and changes direction to meet the water mist blowing function of the taphole opening machine. This device is called a "water-gas connector".
[0004] The inner and outer half shells of the water-gas connector structure in the prior art are thin-walled special-shaped parts with low shell strength. The special-shaped shells require special casting molds, which have high manufacturing costs. The inner and outer half shells are severely worn during rotation, resulting in a weakened sealing function. They cannot effectively prevent water and gas leakage, and cannot ensure that the iron mouth opening machine can stably perform water mist blowing. What's more, the material of the inner and outer half shell structures is tin bronze. After the inner and outer half shells are in contact with friction force, there is a sticking phenomenon, which reduces the rotation accuracy. The inner and outer half shells are greatly worn during use and have a short service life.
[0005] Therefore, a new water-gas rotary joint is urgently needed to solve the above problems. Utility Model Content
[0006] The embodiment of the present application provides a water-gas rotary joint device, aiming to ensure the stability of its own structure while saving production costs.
[0007] To achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: a water-gas rotary joint device, comprising a joint body and a machine; the machine is placed horizontally on a work surface, and the bottom of the joint body is fixedly connected to the table of the machine; the joint body comprises a chassis, an outer shell, a core shaft, a water joint, and an air joint; the chassis is fixedly connected to the table of the machine; the bottom of the core shaft is fixedly arranged on the disk surface of the chassis, and a water flow channel and an air flow channel are opened inside the core shaft; the shell of the outer shell is arranged on the outside of the core shaft, and the bottom of the shell of the outer shell is against the bottom upper end surface of the core shaft, and can rotate relative to the circumference of the core shaft; the water joint is respectively connected to the water inlet end and the water outlet end of the core shaft; the air joint is respectively connected to the air inlet end and the air outlet end of the core shaft.
[0008] Furthermore, it also includes a water pipe, an air pipe, and a rotating arm; the water pipe is respectively connected to the water outlet and water inlet of the joint body, and at least a part of the water pipe is fixedly connected to the rotating arm; the air pipe is respectively connected to the water inlet and water outlet of the joint body, and at least a part of the air pipe is fixedly connected to the rotating arm and is spaced apart from the water pipe; one end of the rotating arm is arranged in the middle of the machine and is rotatably connected to the machine, and the other end thereof is suspended, which can drive part of the air pipe and the water pipe to rotate around the machine.
[0009] Furthermore, the core shaft includes a large diameter section and a small diameter section. The bottom surface of the large diameter section is fixedly connected to the chassis, and the small diameter section extends vertically along the top surface of the large diameter section. A water inlet channel and an air inlet channel are arranged inside the large diameter section, and a water outlet channel and an air outlet channel are arranged inside the small diameter section. The water inlet channel is connected to the water outlet channel, and the air inlet channel is connected to the air outlet channel.
[0010] Furthermore, a bearing is arranged between the inner wall of the shell and the core shaft. The bearing is fixedly arranged on the inner wall of the small diameter section at intervals along the axial direction of the core shaft and rotatably cooperates with the shell.
[0011] Furthermore, a plurality of retaining rings are arranged between adjacent bearings. The retaining rings are in an annular shape, and the inner walls of the three retaining rings are fitted with the outer wall of the core shaft.
[0012] Furthermore, a sealing ring is provided on one side of the retaining ring, the inner wall of the sealing ring is fitted on the outer wall of the small diameter section, and the cross-sectional profile of the sealing ring is star-shaped.
[0013] Furthermore, an end cover is fixedly arranged on the top of the shell, the inner wall of the end cover is spaced apart from the top end surface of the core shaft, and the coverage area of the end cover is larger than the cross-sectional area of the core shaft.
[0014] Furthermore, the water inlet channel and the water outlet channel are arranged opposite to the air inlet channel and the air outlet channel, and the water outlet end of the water outlet channel and the air outlet end of the air outlet channel are arranged in a high and low position staggered manner in the vertical plane.
[0015] Furthermore, the water inlet channel and the air inlet channel have an inverted T-shaped three-way structure, and a plug is embedded in one end of the water inlet channel and the air inlet channel close to the chassis. The plug is a convex structure with one end large and the other end small, and the large diameter end of the plug rests against the edge of one end of the chassis of the water inlet channel and the air inlet channel.
[0016] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:
[0017] The chassis of the water-gas rotary joint device in the present application is detachably connected to the machine, which is convenient for the staff to install and disassemble the water-gas rotary joint. A water flow channel and an air flow channel are opened inside the core shaft to realize the circulation of water and gas. The outer shell is arranged on the outside of the core shaft, and the core shaft is constrained in the shell in a semi-enclosed form. On the one hand, the water flow channel and the air flow channel are buried, which can effectively prevent water leakage and air leakage; on the other hand, there is no need to set additional special-shaped parts, saving manufacturing costs. The inner wall of the shell can rotate relative to the circumferential surface of the core shaft, so as to change the position of the water gas output end in the X and Y directions in space, thereby improving the drilling efficiency of the iron mouth machine drill bit on the waterless cannon mud. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 A schematic diagram of the structure of the assembly of the joint station and the machine station provided in the embodiment of the present application;
[0020] Figure 2 for Figure 1 A front view of
[0021] Figure 3 It is a schematic structural diagram of the joint body in a cross-sectional state in an embodiment of the present application.
[0022] Figure 4 It is a schematic diagram of a joint in a cross-sectional state of a core shaft in an embodiment of the present application;
[0023] Figure 5a , Figure 5b , Figure 5c Respectively Figure 3 Partially enlarged view of the middle area A, B, and C.
[0024] Icons: 1-machine; 2-arm; 3-water pipe; 4-air pipe; 5-plug; 10-connector body; 11-chassis; 12-housing; 13-core shaft; 131-large diameter section; 132-small diameter section; 14-water connector; 15-air connector; 16-bearing; 17-retaining ring; 18-sealing ring; 19-end cover; 20-water flow channel; 21-water inlet channel; 22-water outlet channel; 30-air flow channel; 31-air inlet channel; 32-air outlet channel. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.
[0027] Combination Figure 1 As shown in FIG. 5 , a water-gas rotary joint device comprises a joint body 10 and a machine 1; the bottom of the joint body 10 is fixedly connected to the table of the machine 1; the joint body 10 comprises a chassis 11, a shell 12, a core shaft 13, a water joint 14, and an air joint 15; the chassis 11 is detachably connected to the table of the machine 1; the bottom of the core shaft 13 is fixedly arranged on the disk of the chassis 11, and a water flow channel 20 and an air flow channel 30 are opened inside the core shaft 13; the shell of the shell 12 is arranged on the outside of the core shaft 13, and the bottom of the shell of the shell 12 abuts against the bottom upper end surface of the core shaft 13 and can rotate relative to the circumference of the core shaft 13; the water joint 14 is respectively connected to the water inlet end and the water outlet end of the core shaft 13; the air joint 15 is respectively connected to the air inlet end and the air outlet end of the core shaft 13.
[0028] The water-gas rotary joint in the present application is mainly used in the drilling operation environment of the large-scale iron mouth machine drill bit used in the iron-making field for the waterless cannon mud. The water-gas rotary joint in the present application is composed of a chassis 11, a shell 12, a mandrel 13, a water joint 14 and a gas joint 15. Among them, the chassis 11 is detachably connected to the machine 1, which is convenient for the staff to install and disassemble the water-gas rotary joint. The water flow channel 20 and the air flow channel 30 are opened inside the mandrel 13 to realize the circulation of water and gas. The shell 12 is arranged on the outside of the mandrel 13, and the mandrel 13 is constrained in the shell in a semi-enclosed form. On the one hand, the water flow channel 20 and the air flow channel 30 are buried, which can effectively prevent water leakage and air leakage; on the other hand, there is no need to set additional special-shaped parts, saving manufacturing costs. The inner wall of the shell 12 can rotate relative to the circumference of the mandrel 13, so as to change the position of the water and gas output end in the X and Y directions in space, thereby improving the drilling operation efficiency of the iron mouth machine drill bit for the waterless cannon mud.
[0029] It also includes a machine 1, a water pipe 3, an air pipe 4, and a rotating arm 2; the machine 1 is placed horizontally on a work surface, the water pipe 3 is respectively connected to the water outlet end and the water inlet end of the joint body 10, and at least a part of the water pipe 3 is fixedly connected to the rotating arm 2; the air pipe 4 is respectively connected to the water inlet end and the water outlet end of the joint body 10, and at least a part of the air pipe 4 is fixedly connected to the rotating arm 2, and is spaced apart from the water pipe 3; one end of the rotating arm 2 is arranged in the middle of the machine 1 and is coaxially rotatably connected to the machine 1, and the other end thereof is suspended, which can drive part of the air pipe 4 and the water pipe 3 to rotate around the machine 1.
[0030] The water-gas rotary joint device in the present application is fixedly mounted on the machine 1, and a rotating arm 2 is coaxially connected to the middle of the machine 1. The setting of the rotating arm 2 can change the water pipe 3 and the air outlet pipe 4 located at the water outlet end of the joint body 10 to rotate around the axis of the core shaft 13 to meet the water mist purging function of the iron mouth opening machine. The water pipe 3 is respectively connected to the water inlet end and the water outlet end of the joint body 10, extending the water outlet path of the joint body 10 while facilitating the water supply from the external water source to the joint body 10. The air pipe 4 is respectively connected to the air inlet end and the air outlet end of the joint body 10, on the one hand, so that the joint body 10 is connected to the external air pipe 4, extending the air outlet path of the joint body 10 while facilitating the air supply from the external air source to the joint body 10.
[0031] The core shaft 13 includes a large diameter section 131 and a small diameter section 132. The bottom surface of the large diameter section 131 is fixedly connected to the chassis 11, and the small diameter section 132 extends vertically along the top surface of the large diameter section 131. A water inlet channel 21 and an air inlet channel 31 are arranged inside the large diameter section 131, and a water outlet channel 22 and an air outlet channel 32 are arranged inside the small diameter section 132. The water inlet channel 21 is connected to the water outlet channel 22, and the air inlet channel 31 is connected to the air outlet channel 32.
[0032] The core shaft 13 in the present application is generally in a convex shape with a small top and a large bottom. The bottom surface of the large diameter section 131 is fixedly connected to the chassis 11, wherein a threaded connection is adopted. The water flow channel 20 in the present application includes a water inlet channel 21, an air inlet channel 31, a water outlet channel 22, and an air outlet channel 32. The large diameter section 131 of the core shaft 13 is provided with a water inlet channel 21 and an air inlet channel 31, and the small diameter section 132 is provided with a water outlet channel 22 and an air outlet channel 32. The purpose of such a setting is to independently space the water inlet end and the water outlet end, and the air inlet end and the air outlet end, and to further improve the airtightness of the connector body 10 by utilizing the structural strength of the core shaft 13 itself.
[0033] A bearing 16 is provided between the shell and the mandrel 13. The bearing 16 is fixedly provided on the inner wall of the small diameter section 132 at intervals along the axial direction of the mandrel 13, and is rotatably matched with the shell 12. In the above scheme, the bearing 16 is provided on the one hand to realize the relative rotation between the shell 12 and the mandrel 13, thereby realizing the water mist purge function of the iron mouth opening machine, and on the other hand to reduce the friction between the mandrel 13 and the shell 12 while ensuring the rotation accuracy between the shell 12 and the mandrel 13.
[0034] A plurality of retaining rings 17 are arranged between adjacent bearings 16. The retaining rings 17 are in annular shape, and the inner walls of the three retaining rings 17 are in contact with the outer wall of the core shaft 13. The retaining rings 17 are arranged to provide a primary seal between the inner wall of the housing 12 and the peripheral surface of the core shaft 13 to prevent air and water leakage when the housing 12 and the core shaft 13 rotate relative to each other. On the other hand, the retaining rings 17 provide installation space for the subsequent secondary seal and strengthen the sealing effect of the secondary seal.
[0035] A sealing ring 18 is further disposed on the outer side of the retaining ring 17 . The inner wall of the sealing ring 18 is attached to the outer wall of the small diameter section 132 , and the cross-sectional profile of the sealing ring 18 is star-shaped.
[0036] In the present application, the superimposed pressure is used to press the flash of the sealing ring 18 into the cross-sectional concave part of the retaining ring 17 for secondary sealing. The cross-sectional shape of the sealing ring 18 in the present application can be trapezoidal, triangular, circular, star-shaped, etc., which is not limited in the present application. In order to highlight the advantages of the present application, the sealing ring 18 in the present application adopts a star-shaped sealing ring 18, which uses the X-shaped structural characteristics of the star-shaped sealing ring 18 to prevent itself from rolling in the groove. In addition, the sealing ring 18 can also be placed on both sides of the retaining ring 17 to prevent the sealing ring 18 from being squeezed into the gap on the low-pressure side under high pressure and being damaged and failing.
[0037] In order to prevent external flying dust and ash from extending into the space between the outer shell 12 and the core shaft 13 and increasing the wear of the outer shell 12 shell and the axial surface of the core shaft 13, an end cover 19 is fixedly arranged on the top of the shell, and the inner wall of the end cover 19 is spaced apart from the top end surface of the core shaft 13, and the coverage area of the end cover 19 is larger than the cross-sectional area of the core shaft 13.
[0038] The water inlet channel 21 and the water outlet channel 22 are arranged opposite to the air inlet channel 31 and the air outlet channel 32, and the water outlet end of the water outlet channel 22 and the air outlet end of the air outlet channel 32 are arranged in a high and low position staggered arrangement in the vertical plane. The purpose of such arrangement is to prevent the water pipe 3 and the air pipe 4 respectively connected to the water inlet end of the water inlet channel 21, the water outlet end of the water outlet channel 22, the air inlet end of the air inlet channel 31, and the air outlet end of the air outlet channel 32 from interfering with each other when the housing 12 and the mandrel 13 rotate relative to each other, so as to ensure the normal operation of the water and air purge of the iron mouth opening machine.
[0039] The water inlet channel 21 and the air inlet channel 31 are in an inverted T-shaped three-way structure, and a plug 5 is embedded at one end of the water inlet channel 21 and the air inlet channel 31 close to the chassis 11. The plug 5 is a convex structure with one end large and one end small, and the large diameter end of the plug 5 is against the edge of one end of the chassis 11 of the water inlet channel 21 and the air inlet channel 31. The setting of the plug 5 can ensure the integrity of the water flow channel 20 and the air flow channel 30 of the joint body 10, and avoid water leakage and air leakage of the joint body 10 caused by gaps in the water flow channel 20 and the air flow channel 30.
[0040] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.
[0041] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.
Claims
1. A water-gas rotary joint device, characterized in that: It comprises a joint body (10) and a machine platform (1); The machine (1) is placed horizontally on a work surface. The bottom of the joint body (10) is fixedly connected to the table top of the machine table (1); The joint body (10) comprises a chassis (11), a shell (12), a core shaft (13), a water joint (14), and a gas joint (15); The chassis (11) is fixedly connected to the tabletop of the machine table (1); The bottom of the core shaft (13) is fixedly arranged on the disk surface of the base plate (11), and a water flow channel (20) and an air flow channel (30) are provided inside the core shaft (13); The shell of the outer shell (12) is arranged on the outside of the core shaft (13), the bottom of the shell of the outer shell (12) abuts against the bottom upper end surface of the core shaft (13), and can rotate relative to the circumference of the core shaft (13); The water joint (14) is respectively connected to the water inlet end and the water outlet end of the core shaft (13); the air joint (15) is respectively connected to the air inlet end and the air outlet end of the core shaft (13).
2. The water-gas rotary joint device according to claim 1, characterized in that: It also includes a water pipe (3), an air pipe (4), and a rotating arm (2); The water pipe (3) is respectively connected to the water outlet and water inlet of the joint body (10), and at least a portion of the water pipe (3) is fixedly connected to the rotating arm (2); the air pipe (4) is respectively connected to the water inlet and water outlet of the joint body (10), and at least a portion of the air pipe (4) is fixedly connected to the rotating arm (2) and is spaced apart from the water pipe (3); One end of the rotating arm (2) is arranged in the middle of the machine (1) and is rotatably connected to the machine (1), and the other end is suspended in the air and can drive part of the air pipe (4) and the water pipe (3) to rotate around the machine (1).
3. The water-gas rotary joint device according to claim 1, characterized in that: The core shaft (13) comprises a large diameter section (131) and a small diameter section (132); the bottom surface of the large diameter section (131) is fixedly connected to the chassis (11); the small diameter section (132) extends vertically along the top surface of the large diameter section (131); a water inlet channel (21) and an air inlet channel (31) are arranged inside the large diameter section (131); a water outlet channel (22) and an air outlet channel (32) are arranged inside the small diameter section (132); the water inlet channel (21) is connected to the water outlet channel (22); and the air inlet channel (31) is connected to the air outlet channel (32).
4. The water-gas rotary joint device according to claim 3, characterized in that: A bearing (16) is arranged between the inner wall of the outer shell (12) and the core shaft (13); the bearing (16) is fixedly arranged on the inner wall of the small diameter section (132) at intervals along the axial direction of the core shaft (13) and is rotatably matched with the outer shell (12).
5. The water-gas rotary joint device according to claim 4, characterized in that: A plurality of retaining rings (17) are arranged between adjacent bearings (16), wherein the retaining rings (17) are in an annular shape, and the inner walls of the three retaining rings (17) are in contact with the outer wall of the core shaft (13).
6. The water-gas rotary joint device according to claim 5, characterized in that: A sealing ring (18) is also provided on one side of the retaining ring (17); the inner wall of the sealing ring (18) is fitted onto the outer wall of the small-diameter section (132); and the cross-sectional profile of the sealing ring (18) is star-shaped.
7. The water-gas rotary joint device according to claim 1, characterized in that: An end cover (19) is fixedly arranged on the top of the shell (12), the inner wall of the end cover (19) is spaced apart from the top end surface of the core shaft (13), and the coverage area of the end cover (19) is larger than the cross-sectional area of the core shaft (13).
8. The water-gas rotary joint device according to claim 3, characterized in that: The water inlet channel (21) and the water outlet channel (22) are arranged relative to the air inlet channel (31) and the air outlet channel (32); the water outlet end of the water outlet channel (22) and the air outlet end of the air outlet channel (32) are arranged in a high and low position staggered in a vertical plane.
9. The water-gas rotary joint device according to claim 3, characterized in that: The water inlet channel (21) and the air inlet channel (31) are in an inverted T-shaped three-way structure. A plug (5) is embedded at one end of the water inlet channel (21) and the air inlet channel (31) close to the chassis (11). The plug (5) is in a convex structure with one end being large and the other end being small. The large-diameter end of the plug (5) abuts against the edge of one end of the chassis (11) of the water inlet channel (21) and the air inlet channel (31).