Self-lubricating air guide shaft structure

Abstract

The utility model belongs to the technical field of honing air guide structures, and particularly relates to a self-lubricating air guide shaft structure which comprises an air guide shaft body and a static air guide ring arranged on the air guide shaft body in a sleeved mode, and the static air guide ring is in sliding fit with the air guide shaft body. An air guide anti-rotation rod is fixed to the static air guide ring through a screw, and an air inlet hole and a lubricating oil inlet hole are formed in the air guide anti-rotation rod; the air inlet hole is communicated with an airflow channel on the air guide shaft body through the static air guide ring, and the lubricating oil inlet hole is communicated with the bearing groove through a lubricating channel on the static air guide ring; a sealing ring groove is formed in the inner side wall of the static gas guide ring, a sealing ring is arranged in the sealing ring groove, and the sealing ring groove is located between the bearing groove and the gas inlet channel to isolate lubricating oil and gas. According to the self-lubricating gas guide shaft structure, the sealing ring groove is formed in the inner side wall of the static gas guide ring between the bearing groove and the gas inlet channel, the sealing ring is arranged in the sealing ring groove, so that lubricating oil and gas are isolated, and the problem that the gas pressure measurement precision is affected due to the fact that oil and gas are mixed can be effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of honing air guide structures, and in particular relates to an automatic lubrication air guide shaft structure. Background Art

[0002] In some rotating mechanisms, compressed gas is required for online measurement, and gas-guiding mechanisms come into being. In order to prevent air leakage, sealing rings are required for sealing.

[0003] In the past, the air guide mechanism was lubricated by installing a lubricating nozzle on the static air guide ring and manually adding lubricating oil regularly for lubrication. The quality of lubrication is greatly affected by human factors, and the lubrication is unreliable. Due to the high-speed rotation of the air guide shaft, the sealing ring and the air guide shaft are sealed by the elasticity of the sealing ring. In the absence of lubricating oil, the sealing ring and the air guide shaft body are very easy to wear and cause leakage, which not only affects the accuracy of online measurement, but also causes damage to the air guide mechanism, greatly reducing the service life of the air guide mechanism. The air guide mechanism needs to be replaced frequently, increasing the cost of use. In order to solve the inconvenience of manual lubrication, the automatic lubrication air guide shaft structure came into being. However, because the lubricating oil is automatically added, if the air path and the lubricating oil path are not isolated in place, the lubricating oil liquid will enter the air path system, causing the mechanism lubricating oil and the measured gas to be mixed together, which will affect the measurement accuracy to a certain extent. Utility Model Content

[0004] In view of this, the utility model provides an automatic lubrication air guide shaft structure to solve the above-mentioned problems recorded in the background technology.

[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0006] The utility model provides an automatic lubricating air guide shaft structure, comprising an air guide shaft body and a static air guide ring sleeved on the air guide shaft body, the air guide shaft body is provided with an air flow channel, the static air guide ring is provided with an air intake channel and a lubrication channel, the air flow channel on the air guide shaft body and the air intake channel on the static air guide ring are mutually connected; the upper and lower ends of the static air guide ring are both provided with bearing grooves, a lip-shaped sealing ring is provided in the bearing groove, the static air guide ring is slidably matched with the air guide shaft body; the static air guide ring is fixed with the air guide by screws An anti-rotation rod, the air guide anti-rotation rod is provided with an air inlet hole and a lubricating oil inlet hole; the air inlet hole is connected with the air flow channel on the air guide shaft body through a static air guide ring, and the lubricating oil inlet hole is connected with the bearing groove through the lubrication channel on the static air guide ring; an air outlet pipe joint is provided on the air guide shaft body, and the air outlet pipe joint is connected with the air flow channel on the air guide shaft body, a sealing ring groove is provided on the inner side wall of the static air guide ring, a sealing ring is provided in the sealing ring groove, and the sealing ring groove is located between the bearing groove and the air inlet channel to isolate the lubricating oil and gas.

[0007] In the above-mentioned automatic lubrication air guide shaft structure, as a preferred solution, the air outlet pipe joint is used to connect a pneumatic measuring head.

[0008] In the above-mentioned automatic lubrication air guide shaft structure, as a preferred solution, end covers are provided at both ends of the static air guide ring, and the end cover at the lower end of the static air guide ring is limited by a retaining ring clamped on the air guide shaft body.

[0009] In the above-mentioned automatic lubrication air guide shaft structure, as a preferred solution, the cross-section of the sealing ring is circular or elliptical.

[0010] The utility model provides an automatic lubrication air guide shaft structure, which has the following beneficial effects:

[0011] The automatic lubrication gas guide shaft structure provided by the utility model can isolate lubricating oil and gas by arranging a sealing ring groove on the inner wall of the static gas guide ring between the bearing groove and the air intake channel, and arranging a sealing ring in the sealing ring groove, thereby effectively solving the problem of oil and gas mixing and affecting the accuracy of gas pressure measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic cross-sectional view of the overall structure provided by the utility model;

[0013] Figure 2 This is a partial enlarged schematic diagram of part A provided by the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0015] Exemplary embodiments of the present invention are described in detail with reference to the following drawings.

[0016] The meanings of the serial numbers in the figure are: 1 is the air guide shaft body, 2 is the static air guide ring, 2-1 is the sealing ring groove, 3 is the end cover, 4 is the sealing ring, 5 is the retaining ring, 6 is the air flow channel, 7 is the lip sealing ring, 8 is the lubrication channel, 9 is the air guide anti-rotation rod, 10 is the lubricating oil inlet hole, 11 is the air intake hole, 12 is the air intake channel, and 13 is the air outlet pipe joint.

[0017] The following describes exemplary embodiments of the present invention in combination with specific circumstances:

[0018] Example 1: Combination Figure 1-Figure 2 As shown, the utility model provides an automatic lubricating gas guide shaft structure, including a gas guide shaft body 1, and a static gas guide ring 2 mounted on the gas guide shaft body 1, the static gas guide ring 2 and the gas guide shaft body 1 are in sliding contact; the gas guide shaft body 1 is provided with an air flow channel 6, the static gas guide ring 2 is provided with an air intake channel 12 and a lubrication channel 8, the air flow channel 6 on the gas guide shaft body 1 and the air intake channel 12 on the static gas guide ring 2 are mutually connected; the static gas guide ring 2 is provided with a bearing groove at the upper end and the lower end, and a lip-shaped sealing ring 7 is provided in the bearing groove. The static gas guide ring 2 is in sliding cooperation with the gas guide shaft body 1, and the toothed sealing ring 7 provides sealing for the gas guide shaft body 1 and the static gas guide ring 2. The static air guide ring 2 is fixed with an air guide anti-rotation rod 9 by screws, and an air inlet hole 11 and a lubricating oil inlet hole 10 are provided on the air guide anti-rotation rod 9; the air inlet hole 11 is connected with the air flow channel 6 on the air guide shaft body 1 through the air inlet channel 12 provided on the static air guide ring 2, and the lubricating oil inlet hole 10 is connected with the bearing groove through the lubricating channel 8 on the static air guide ring 2, and the lubricating oil provides lubrication for the tooth-shaped sealing ring 7 in the tooth bearing groove. An air outlet pipe joint 13 is provided on the air guide shaft body 1, and the air outlet pipe joint 13 is connected with the air flow channel 6 on the air guide shaft body 1.

[0019] A sealing ring groove 2-1 is provided on the inner wall of the static air guide ring 2, and a sealing ring 4 is provided in the sealing ring groove 2-1. The sealing ring groove 2-1 is located between the bearing groove and the air intake channel 12 to isolate the lubricating oil and the gas.

[0020] The air outlet pipe joint 13 is used to connect the pneumatic measuring head. End caps 3 are provided at both ends of the static air guide ring 2, and the end cap 3 at the lower end of the static air guide ring 2 is limited by a retaining ring 5 clamped on the air guide shaft body 1.

[0021] The cross section of the sealing ring 4 is circular or elliptical, and the sealing ring 4 is made of rubber material.

[0022] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0023] The above specific examples are used to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An automatic lubricating air guide shaft structure, comprising an air guide shaft body and a static air guide ring sleeved on the air guide shaft body, the air guide shaft body being provided with an air flow channel, the static air guide ring being provided with an air intake channel and a lubrication channel, the air flow channel on the air guide shaft body and the air intake channel on the static air guide ring being mutually interpenetrating; the static air guide ring being provided with a bearing groove at the upper end and the lower end, the bearing groove being provided with a lip-shaped sealing ring, the static air guide ring being slidably matched with the air guide shaft body; the static air guide ring being fixed with an air guide anti-rotation rod by screws, the air guide anti-rotation rod being provided with an air intake hole and a lubricating oil inlet hole; the air intake hole being connected with the air flow channel on the air guide shaft body through the static air guide ring, and the lubricating oil inlet hole being connected with the bearing groove through the lubrication channel on the static air guide ring; the air guide shaft body being provided with an air outlet pipe joint, the air outlet pipe joint being connected with the air flow channel on the air guide shaft body, characterized in that: A sealing ring groove is arranged on the inner side wall of the static air guide ring, a sealing ring is arranged in the sealing ring groove, and the sealing ring groove is located between the bearing groove and the air intake channel to isolate the lubricating oil and the gas.

2. The automatic lubrication air guide shaft structure according to claim 1, characterized in that: The air outlet pipe joint is used for connecting a pneumatic measuring head.

3. The automatic lubrication air guide shaft structure according to claim 1, characterized in that: End covers are arranged at both ends of the static air guide ring, and the end cover at the lower end of the static air guide ring is limited by a retaining ring clamped on the air guide shaft body.

4. The automatic lubrication air guide shaft structure according to claim 1, characterized in that: The cross section of the sealing ring is circular or elliptical.

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