Heating type rotary joint structure

Abstract

The utility model relates to the technical field of rotating joints, and discloses a heating type rotating joint structure which comprises a shell and a rotating body, a medium inlet is formed in the side face of the shell, a medium channel is formed in the center of the rotating body, a flow guide base is arranged in the shell, and a plurality of flow guide through holes are formed in the flow guide base. An annular channel is formed between the periphery of the flow guide seat and the inner wall of the shell, the outer end of the flow guide through hole is communicated with the annular channel, and the inner end of the flow guide through hole is communicated with the medium channel; a heating assembly is arranged at the end of the shell and comprises a connecting base and a plurality of electric heating pipes arranged at the inner end of the connecting base, the connecting base is detachably connected with the shell, the electric heating pipes correspondingly stretch into the flow guide through holes, an annular heating channel is formed between the electric heating pipes and the flow guide through holes, and an electric connector for supplying power to the electric heating pipes is arranged at the outer end of the connecting base. The utility model has the beneficial effects that the medium can be uniformly heated, the flowability of the medium is improved, and the stable conveying of the medium is maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary joint technical field especially relates to a heating type rotary joint structure. BACKGROUND

[0002] Rotary joint is a kind of pipeline connecting component, usually used to convey medium from static pipeline to rotary pipeline, and is widely used in chemical industry, metallurgy, mechanical processing cooling, biological medicine field. The function of the existing rotary joint is relatively single, usually does not have the processing function to medium, and some oil grease medium conveying process needs to maintain certain temperature, thereby maintaining the good fluidity of medium, but the heat of oil grease medium is dissipated along with the pipeline, and the temperature is reduced, thereby causing the fluidity of oil grease medium to reduce, the pipeline conveying resistance to increase, and the normal conveying of medium is affected. SUMMARY

[0003] The utility model discloses in order to solve the above -mentioned problems in prior art, provide a kind of heating type rotary joint structure that can be uniformly heated to medium, improve the fluidity of medium, keep the stable conveying of medium.

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

[0005] A kind of heating type rotary joint structure, including shell, the rotating body of being connected with shell rotation, the side of the shell is equipped with medium inlet, the center of the rotating body is equipped with medium passage, the shell is equipped with flow guide seat, the flow guide seat is equipped with several flow guide through-hole, the outer periphery of the flow guide seat and the inner wall of shell form annular passage, the outer end of the flow guide through-hole and the annular passage are communicated, the inner end of the flow guide through-hole and medium passage are communicated;The end of the shell is equipped with heating assembly, and the heating assembly includes connecting seat, several electric heating tubes arranged in the inner end of connecting seat, the connecting seat is detachably connected with shell, the electric heating tube corresponds and extends into the flow guide through-hole, annular heating passage is formed between the electric heating tube and flow guide through-hole, and the outer end of the connecting seat is equipped with electric connector for the power supply of electric heating tube.

[0006] By adopting the above technical scheme: by setting the detachable heating assembly of built-in electric heating tube, the medium conveying and heating function integration are realized, the electric heating tube is directly inserted into flow guide through-hole to form annular heating passage, so that medium is uniformly heated in the flowing process, effectively solve the problem that the fluidity of oil grease medium is reduced due to temperature reduction, and reduce the pipeline conveying resistance.

[0007] Preferably, the inner wall of the housing is provided with an annular stepped surface, and the inner end of the flow guide extends outward to form a convex ring, which is connected to the annular stepped surface by a first bolt. The outer end of the housing has a mounting hole at its center, and the connecting seat is disposed within the mounting hole. The outer end of the connecting seat is connected to the outer end of the housing by a second bolt. The annular stepped surface provides stable positioning for the flow guide, and the flow guide is connected by the first bolt, making installation and disassembly very convenient.

[0008] Preferably, a first sealing ring is provided between the side of the connector and the inner wall of the mounting hole. The first sealing ring serves to seal and prevent the medium from leaking from the connection between the connector and the mounting hole.

[0009] Preferably, the inner end of the convex ring is provided with a support ring, the outer wall of the outer end of the rotating body is clearance-fitted with the inner wall of the support ring, and a graphite sealing ring is provided between the outer end of the rotating body and the inner end of the guide seat. The graphite sealing ring serves a sealing function and has high-temperature resistance, making it suitable for conveying high-temperature media.

[0010] Preferably, the outer end of the rotating body is provided with an annular limiting boss, the inner end of the annular limiting boss is provided with an inner ball bearing between it and the housing, the outer end of the annular limiting boss is provided with an outer ball bearing between it and the housing, and the inner end of the housing is provided with an end cap. The use of inner and outer ball bearings ensures the coaxiality of the rotating body during rotation and maintains rotational stability.

[0011] Preferably, an external thrust bearing is provided between the external ball bearing and the support ring, and an internal thrust bearing is provided between the internal ball bearing and the end cover. The external and internal thrust bearings can improve the axial load and enhance the working stability of the rotary joint.

[0012] Preferably, an annular gap is formed between the support ring and the inner wall of the housing, and a shock-absorbing spring is provided within the annular gap. The shock-absorbing spring elastically abuts against the end of the inner thrust bearing. The shock-absorbing spring in the annular gap elastically abuts against the thrust bearing, which can absorb the vibration energy during the use of the rotary joint, reduce the impact caused by the flow of the medium or mechanical rotation, and extend the overall service life.

[0013] Therefore, this invention has the beneficial effects of uniformly heating the medium, improving the fluidity of the medium, and maintaining stable transport of the medium. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0015] Figure 2 for Figure 1 Another perspective

[0016] Figure 3 for Figure 2 A sectional view.

[0017] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0018] Figure 5 This is an exploded view of the present invention.

[0019] Figure 6 This is a schematic diagram showing the fit between the flow guide seat and the heating component. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial technical effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the scope of protection of the present utility model.

[0021] It should be understood that the terms "first," "second," etc., used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor should they be construed as implicitly specifying the number of technical features indicated. Features specified as "first" or "second" may expressly or implicitly indicate that at least one of those features is included.

[0022] like Figures 1-6 The diagram shows a heating rotary joint structure, comprising a housing 1 and a rotating body 2 rotatably connected to the housing 1. The housing 1 has a medium inlet 100 on its side, and the rotating body 2 has a medium channel 200 at its center. The housing 1 contains a flow guide seat 3 with several flow guide holes 300. An annular channel 301 is formed between the outer periphery of the flow guide seat 3 and the inner wall of the housing 1. The outer end of each flow guide hole 300 communicates with the annular channel 301, and the inner end of each flow guide hole 300 communicates with the medium channel 200. A heating assembly 4 is provided at the end of the housing 1. The heating assembly 4 includes a connecting seat 40 and several heating tubes 41 disposed at the inner end of the connecting seat 40. The connecting seat 40 is detachably connected to the housing 1. Each heating tube 41 extends into one of the flow guide holes 300, forming an annular heating channel 400 between the heating tubes 41 and the flow guide holes 300. An electrical connector 42 for supplying power to the heating tubes 41 is provided at the outer end of the connecting seat 40.

[0023] The inner wall of the shell 1 is provided with an annular stepped surface 10, the inner end of the flow guide base 3 extends outward to form a convex ring 30, the convex ring 30 is connected with the annular stepped surface 10 through a first bolt 31, the outer end of the shell 1 is provided with a mounting hole 11, the connecting base 40 is arranged in the mounting hole 11, and the outer end of the connecting base 40 and the outer end of the shell 1 are connected with the shell 1 through a second bolt 43. The side surface of the connecting base 40 and the inner wall of the mounting hole 11 are provided with a first sealing ring 44.

[0024] The inner end of the convex ring 30 is provided with a supporting ring 32, the outer end of the rotating body 2 is in clearance fit with the inner wall of the supporting ring 32, and the outer end of the rotating body 2 and the inner end of the flow guide base 3 are provided with a graphite sealing ring 5.

[0025] The outer end of the rotating body 2 is provided with an annular limiting boss 20, the inner end of the annular limiting boss 20 and the shell 1 are provided with an inner ball bearing 60, the outer end of the annular limiting boss 20 and the shell 1 are provided with an outer ball bearing 61, and the inner end of the shell 1 is provided with an end cover 7. The outer ball bearing 61 and the supporting ring 32 are provided with an outer thrust bearing 62, and the inner ball bearing 60 and the end cover 7 are provided with an inner thrust bearing 63. The composite bearing structure of the outer ball bearing, the inner ball bearing, the outer thrust bearing and the inner thrust bearing is adopted, axial and radial loads are effectively dispersed, and the mechanical stability of the rotary joint is improved.

[0026] The supporting ring 32 and the inner wall of the shell 1 form an annular gap 320, the annular gap 320 is provided with a damping spring 8, and the damping spring 8 elastically abuts against the end portion of the inner thrust bearing 63. In cooperation with the damping spring, vibration energy in the equipment operation can be absorbed, impact caused by medium flow or mechanical rotation can be reduced, and the overall service life is prolonged.

[0027] The principle of the utility model is as follows in combination with the drawings: the flow guide base is arranged in the shell, the medium is first shunted through the flow guide through hole, the electric heating pipe is directly inserted into the flow guide through hole to form an annular heating channel, the shunted medium is uniformly heated through the annular heating channel, the problem that the flowability of grease medium is reduced due to temperature reduction is effectively solved, and the pipeline conveying resistance is reduced. On the basis of the medium transmission function of the traditional rotary joint, the dynamic heating technology is innovatively integrated, and the reliability of the high-viscosity medium conveying system is significantly improved.

[0028] In the description of the utility model, need understanding is, up and down, left and right, inner end, outer end, one end, another end and so on the direction or position relation indicated based on the position or position relation shown in the drawing, only is for more clearly convenient for describing the technical scheme of the utility model, and is not the device or the element indicated or implied must have a specific direction, with a specific position structure and operation, can not be understood as the limitation to the utility model.

[0029] Although the specific embodiments of the utility model are described in detail here, they are only given for the purpose of explanation, and should not be considered as limiting the scope of the utility model. Various substitutions, changes and modifications can be conceived without departing from the spirit and scope of the utility model.

Claims

1. A heating rotary joint structure, comprising a housing (1) and a rotating body (2) rotatably connected with the housing (1), a medium inlet (100) is arranged on the side of the housing (1), and a medium passage (200) is arranged in the center of the rotating body (2), characterized in that, The shell (1) is internally provided with a flow guide seat (3), the flow guide seat (3) is provided with a plurality of flow guide through holes (300), an annular channel (301) is formed between the outer periphery of the flow guide seat (3) and the inner wall of the shell (1), the outer end of the flow guide through hole (300) is in communication with the annular channel (301), and the inner end of the flow guide through hole (300) is in communication with the medium channel (200); The end of the shell (1) is provided with a heating assembly (4), the heating assembly (4) comprises a connecting seat (40) and a plurality of electric heating pipes (41) arranged at the inner end of the connecting seat (40), the connecting seat (40) is detachably connected with the shell (1), the electric heating pipe (41) corresponds to the flow guide through hole (300) and extends into the flow guide through hole (300), an annular heating channel (400) is formed between the electric heating pipe (41) and the flow guide through hole (300), and the outer end of the connecting seat (40) is provided with an electric connector (42) for supplying power to the electric heating pipe (41).

2. A heating rotary union structure according to claim 1, wherein The inner wall of the shell (1) is provided with an annular stepped surface (10), the inner end of the flow guide seat (3) extends outward to form a convex ring (30), and the convex ring (30) is connected with the annular stepped surface (10) through a first bolt (31). The outer end of the shell (1) is provided with a mounting hole (11), the connecting seat (40) is arranged in the mounting hole (11), and the outer end of the connecting seat (40) is connected with the shell (1) through a second bolt (43).

3. A heating rotary union structure according to claim 2, wherein A first sealing ring (44) is arranged between the side surface of the connecting seat (40) and the inner wall of the mounting hole (11).

4. A heating rotary union structure according to claim 2, wherein The inner end of the convex ring (30) is provided with a supporting ring (32), the outer end of the rotating body (2) is in clearance fit with the inner wall of the supporting ring (32), and a graphite sealing ring (5) is arranged between the outer end of the rotating body (2) and the inner end of the flow guide seat (3).

5. A heating rotary union structure according to claim 4, wherein The outer end of the rotating body (2) is provided with an annular limiting boss (20), an inner ball bearing (60) is arranged between the inner end of the annular limiting boss (20) and the shell (1), an outer ball bearing (61) is arranged between the outer end of the annular limiting boss (20) and the shell (1), and the inner end of the shell (1) is provided with an end cover (7).

6. A heating rotary union structure according to claim 5, wherein An outer thrust bearing (62) is arranged between the outer ball bearing (61) and the supporting ring (32), and an inner thrust bearing (63) is arranged between the inner ball bearing (60) and the end cover (7).

7. A heating rotary union structure according to claim 6, wherein An annular gap (320) is formed between the supporting ring (32) and the inner wall of the shell (1), a damping spring (8) is arranged in the annular gap (320), and the damping spring (8) is in elastic abutment with the end of the inner thrust bearing (63).

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