Cable wiring exhaust device

Abstract

The utility model provides a cable wiring exhaust device, and belongs to the technical field of machinery. A cable wiring exhaust device comprises a shell and a crankshaft, the shell is provided with a first channel, a first sealing set and a second sealing set are installed in the shell, the crankshaft penetrates through the first channel and penetrates through the first sealing set and the second sealing set to form a lubricating gap cavity, an air guide part is fixed to the outer portion of the shell, and an exhaust hole is formed in the air guide part. The exhaust hole is communicated with the lubricating gap cavity, and a threading hole which is not communicated with the exhaust hole is further formed in the air guide part. The utility model has the advantage that the internal gas can be effectively exhausted.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery, in particular to a cable connection exhaust device. Background Art

[0002] In the device used, several sealing rings are set between the housing and the crankshaft to prevent oil from leaking from the housing and the crankshaft. However, during the continuous lifting and lowering of the crankshaft, although the oil can be effectively blocked, air will still be carried out from between the sealing ring and the crankshaft and accumulate continuously, causing the lubricating fluid at this position to be filled with bubbles and the internal pressure to increase. This will not only increase the wear of the crankshaft, but also make the sealing ring more susceptible to damage. Summary of the invention

[0003] The utility model aims to solve the above problems in the prior art and proposes a cable wiring exhaust device which has the characteristic of being able to effectively exhaust internal gas.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A cable wiring exhaust device comprises a shell and a shaft, wherein the shell has a first channel, a first sealing group and a second sealing group are installed in the shell, the shaft passes through the first channel, and passes through the first sealing group and the second sealing group to form a lubrication gap cavity, an air guide portion is fixed to the outside of the shell, an exhaust hole is provided on the air guide portion, the exhaust hole is connected to the lubrication gap cavity, and a threading hole which is not connected to the exhaust hole is also provided on the air guide portion.

[0006] In the above cable wiring exhaust device, both ends of the shell are provided with threaded connection parts.

[0007] In the above-mentioned cable wiring exhaust device, the exhaust hole includes a first air hole and a second air hole, the first air hole and the second air hole are vertically arranged, the first air hole is arranged axially along the outer shell, the second air hole is arranged radially along the outer shell, the second air hole is connected to the lubrication gap cavity, and the upper end of the first air hole is higher than the position of the first sealing group.

[0008] In the above cable wiring exhaust device, the second air hole is arranged near the first sealing group.

[0009] In the above cable wiring exhaust device, the first sealing group includes at least three first sealing rings, and the second sealing group includes three second sealing rings.

[0010] In the above cable wiring exhaust device, a plastic lining is fixed to the first passage.

[0011] Compared with the prior art, this application has the following advantages:

[0012] It can effectively discharge the air in the lubrication gap cavity to prevent excessive internal pressure, reduce the risk of increased shaft wear and damage to the sealing group due to pressure problems, and extend the service life of the equipment. The design of the air guide part can realize the exhaust function without affecting the normal connection and wiring of the cable, making the structure of the entire device more reasonable and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional structural diagram in this application.

[0014] In the figure,

[0015] 2. housing; 21. lubrication clearance cavity;

[0016] 3. Crankshaft;

[0017] 4. The first sealing group;

[0018] 5. Second sealing group;

[0019] 6. air guide; 61. exhaust hole; 611. first air hole; 612. second air hole; 62. threading hole;

[0020] 7. Plastic lining. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 The present application is further described with specific embodiments:

[0022] First of all, it should be noted that in the description of this application, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and other directional words appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply 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 of this application; in addition, if the terms "first", "second", "third" and other numerical quantifiers appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", and "connected" appear, they should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, a limited connection such as an interference fit, a transition fit, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; therefore, for ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0023] like Figure 1As shown, a cable wiring exhaust device includes a shell 2 and a shaft 3, the shell 2 has a first channel, a first sealing group 4 and a second sealing group 5 are installed in the shell 2, the shaft 3 passes through the first channel, and passes through the first sealing group 4 and the second sealing group 5 to form a lubrication gap cavity 21, an air guide portion 6 is fixed to the outside of the shell 2, an exhaust hole 61 is provided on the air guide portion 6, the exhaust hole 61 is connected to the lubrication gap cavity 21, and a threading hole 62 that is not connected to the exhaust hole 61 is also provided on the air guide portion 6.

[0024] In the present application, when the motor shaft 3 is continuously moving during operation, due to the friction between the shaft 3 and the sealing group and other factors, air may enter the lubrication gap cavity 21 between the shaft 3 and the housing 2. As the air continues to accumulate, the internal pressure will increase. At this time, the air guide part 6 plays a role, and the air in the lubrication gap cavity 21 can be discharged through the exhaust hole 61 connected to the cavity, thereby maintaining the pressure balance in the lubrication gap cavity 21 and avoiding damage to the equipment due to excessive pressure. The cable can be connected and wired through the threading hole 62 on the air guide part 6 that is not connected to the exhaust hole 61.

[0025] The air in the lubrication gap cavity 21 is effectively discharged to prevent excessive internal pressure, reduce the risk of increased wear of the machine shaft 3 and damage to the sealing group due to pressure problems, and extend the service life of the equipment. The design of the air guide part 6 not only realizes the exhaust function, but also does not affect the normal connection and wiring of the cable, making the structure of the entire device more reasonable and compact.

[0026] Specifically, both ends of the housing 2 are provided with threaded connection parts.

[0027] The threaded connection method is simple to operate, does not require complicated connection methods, and is convenient for connection.

[0028] Specifically, the exhaust hole 61 includes a first air hole 611 and a second air hole 612, the first air hole 611 and the second air hole 612 are vertically arranged, the first air hole 611 is axially arranged along the outer shell 2, and the second air hole 612 is radially arranged along the outer shell 2, the second air hole 612 is connected to the lubrication gap cavity 21, and the upper end of the first air hole 611 is higher than the position of the first sealing group 4.

[0029] The upper end of the first air hole 611 is higher than the position of the first sealing group 4 , which can effectively prevent the oil in the lubricating gap cavity 21 from being discharged from the first air hole 611 , but the air can be discharged smoothly from the exhaust hole 61 .

[0030] Specifically, the second air hole 612 is arranged near the first sealing group 4 .

[0031] The internal bubbles will move upwards, and this design can discharge the internal gas as much as possible.

[0032] Specifically, the first sealing group 4 includes at least three first sealing rings, and the second sealing group 5 includes three second sealing rings.

[0033] The setting of multiple sealing rings forms a multiple sealing barrier, which greatly improves the reliability of sealing. Even if one of the sealing rings is slightly damaged or the sealing performance is reduced, the other sealing rings can continue to function, effectively preventing oil leakage and reducing air entry.

[0034] Specifically, a plastic liner 7 is fixed to the first channel.

[0035] The plastic liner 7 is relatively soft and can play a buffering role between the shaft 3 and the housing 2. When the shaft 3 moves up and down in the first channel, the plastic liner 7 can reduce the direct friction between the shaft 3 and the housing 2, reduce the wear of the shaft 3 and the housing 2, and extend the service life of both.

[0036] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A cable wiring exhaust device, characterized in that: The invention comprises a housing (2) and a shaft (3), wherein the housing (2) has a first passage, a first sealing group (4) and a second sealing group (5) are installed in the housing (2), the shaft (3) passes through the first passage, and passes through the first sealing group (4) and the second sealing group (5) to form a lubricating gap cavity (21), an air guide portion (6) is fixed to the outside of the housing (2), an exhaust hole (61) is provided on the air guide portion (6), the exhaust hole (61) is connected to the lubricating gap cavity (21), and a threading hole (62) which is not connected to the exhaust hole (61) is also provided on the air guide portion (6).

2. The cable wiring exhaust device according to claim 1, characterized in that: Threaded connection parts are provided at both ends of the housing (2).

3. The cable wiring exhaust device according to claim 1, characterized in that: The exhaust hole (61) comprises a first air hole (611) and a second air hole (612), wherein the first air hole (611) and the second air hole (612) are arranged vertically, the first air hole (611) is arranged axially along the outer shell (2), and the second air hole (612) is arranged radially along the outer shell (2), the second air hole (612) is connected to the lubrication gap cavity (21), and the upper end of the first air hole (611) is higher than the position of the first sealing group (4).

4. The cable connection exhaust device according to claim 3, characterized in that: The second air hole (612) is arranged at a position close to the first sealing group (4).

5. The cable wiring exhaust device according to claim 1, characterized in that: The first sealing group (4) comprises at least three first sealing rings, and the second sealing group (5) comprises three second sealing rings.

6. The cable connection exhaust device according to claim 1, characterized in that: The first channel is fixed with a plastic lining (7).

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