CN215806911U

CN215806911U - Metal hose for screw air compressor

Info

Publication number: CN215806911U
Application number: CN202121399973.9U
Authority: CN
Inventors: 崔健; 刘志达; 朱广松
Original assignee: Aerosun Corp
Current assignee: Aerosun Corp
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-02-11
Anticipated expiration: 2031-06-23

Abstract

The utility model relates to a metal hose for a screw air compressor, and belongs to the technical field of compressor pipelines. The flexible section of the hose is composed of a metal corrugated hose, a metal net cover coated outside the metal corrugated hose and metal buckling rings which are positioned at two ends of the metal corrugated hose and tightly hoop the metal net cover to the metal corrugated hose; the bent pipe section consists of a metal bent pipe and a built-in joint welded at one end of the metal bent pipe; the built-in joint is provided with a disc end, a built-in section and a reducing section, wherein the outer diameter of the disc end is matched with the outer diameter of the metal corrugated pipe, and the end faces of the disc end and the metal corrugated pipe are fixedly connected in a butt welding mode; the sum of the lengths of the disc end and the built-in section is matched with the length of the extension section of the metal mesh sleeve; the diameter of the reducing section is matched with that of the metal bent pipe. The utility model has the advantages of light weight, good flexibility, aging resistance, convenient installation, good manufacturability, contribution to eliminating stress and reducing vibration transmission, contribution to reducing the running noise of the air compressor and prolonging the service life.

Description

Metal hose for screw air compressor

Technical Field

The utility model relates to a metal hose, in particular to a metal hose for a screw air compressor, and belongs to the technical field of compressor pipelines.

Background

In recent years, the air compressor industry has been greatly developed. Compared with the traditional piston air compressor, the screw air compressor has the advantages of low operation cost, high investment recovery rate, obvious energy-saving effect and the like, so that the screw air compressor is gradually replaced with the piston air compressor in many occasions.

According to the knowledge of the applicant, the traditional screw air compressor pipeline generally adopts a rubber hose and a steel pipe, and has the defects of poor corrosion resistance and shock resistance, easy aging and leakage, difficult installation and the like.

Disclosure of Invention

The utility model aims to: aiming at the defects of a screw air compressor pipeline formed by combining a rubber hose and a steel pipe, the metal hose for the screw air compressor is convenient to install, can effectively avoid aging leakage and has good shock resistance.

In order to achieve the purpose, the basic technical scheme of the metal hose for the screw air compressor is as follows: the flexible section consists of a metal corrugated hose, a metal net sleeve coated outside the metal corrugated hose and metal buckling rings which are positioned at two ends of the metal corrugated hose and tightly clamp the metal net sleeve to the metal corrugated hose; the bent pipe section consists of a metal bent pipe and a built-in joint welded at one end of the metal bent pipe;

the built-in joint is provided with a disc end, a built-in section and a reducing section, wherein the outer diameter of the disc end is matched with the outer diameter of the metal corrugated pipe, and the end faces of the disc end and the metal corrugated pipe are fixedly connected in a butt welding mode; the sum of the lengths of the disc end and the built-in section is matched with the length of the extension section of the metal mesh sleeve, and a welding seam gap is formed between the outer diameter of the built-in section and the inner diameter of the metal mesh sleeve; the diameter of the reducing section is matched with that of the metal bent pipe.

The utility model not only utilizes the characteristics of light weight, good flexibility, aging resistance and convenient installation of the metal corrugated pipe, but also reasonably designs the built-in joint structure, is beneficial to eliminating stress and reducing vibration transmission, has good manufacturability, and is beneficial to reducing the running noise of the air compressor and prolonging the service life.

The utility model has the further perfection that: the bent pipe sections at the two ends are respectively a plane bent pipe section and a space bent pipe section, and the space bent pipe sections are integrally bent and formed.

The utility model has the further perfection that: a groove is arranged between the disc end and the built-in section.

The utility model has the further improvement that: the built-in section is transited to the reducing section through the conical section.

Drawings

The utility model will be further explained with reference to the drawings.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a partially enlarged view of fig. 1 at a.

Detailed Description

Example one

The metal hose for the screw air compressor of the present embodiment includes a flexible section 1 in the middle, a planar bent section 2 at the left end, and a spatial bent section 3 at the right end, as shown in fig. 1 to 4. The plane bend section 2 and the space bend section 3 are respectively integrally bent and formed.

The flexible section 1 is composed of a stainless steel corrugated hose 1.1, a stainless steel mesh sleeve 1.2 wrapping the stainless steel corrugated hose 1.1 and stainless steel buckle rings 1.3 which are positioned at two ends of the stainless steel corrugated hose 1.1 and used for tightly hooping the stainless steel mesh sleeve 1.2 on the stainless steel corrugated hose 1.1. The plane bend section 2 and the space bend section 3 at the right end are respectively composed of a 90-degree stainless steel bend pipe, a stainless steel space bend pipe and a stainless steel built-in joint 4 welded at the corresponding inner end.

The stainless steel built-in fitting 4 has a disc end 4.1, a built-in section 4.3 and a reduced diameter section 4.5. The outer diameter of the disk end 4.1 is matched with the outer diameter of the stainless steel corrugated pipe 1.1, and the end surfaces are fixedly connected with each other in an argon arc butt welding mode. The sum of the lengths of the disk end 4.1 and the built-in section 4.3 is matched with the length of the extension section of the stainless steel mesh sleeve 1.2 so as to be fixedly connected with the end part through argon arc seam welding. The diameter of the reduced diameter section 4.5 is adapted to the diameter of the respective stainless

steel bent tube

2 or 3, so that a reliable welding is achieved. A groove 4.2 is arranged between the disc end 4.1 and the built-in section 4.3, and the built-in section 4.3 is transited to the reducing section 4.3 through the conical section 4.4, so that the stress is more ideally eliminated and the vibration buffering effect is more ideally achieved.

After the nuts at the two ends of the bent pipe are connected into the pipeline of the screw air compressor, the installation is convenient and fast, and the effect of pipeline connection, shock absorption and mounting displacement compensation is good. The built-in joint structure obviously improves the end strength, is more resistant to earthquake and shock, and greatly reduces the leakage rate after long-term use. The metal hose can be installed in a narrow limited space inside the air compressor and is not in contact with other parts in the air compressor. In a word, test results show that the screw air compressor pipeline internal pressure bearing device can bear the internal pressure of the screw air compressor pipeline, compensate pipeline installation displacement, absorb vibration and reduce noise; meanwhile, the reasonable bending mode of the bent pipe reduces the bending angle error of the steel pipes at two ends of the metal hose, reduces welding seams, reduces leakage rate and improves installation precision.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and all the technical solutions and the concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. The utility model provides a metal collapsible tube for screw rod air compressor, includes the flexible section at middle part and the bend section at both ends, its characterized in that: the flexible section consists of a metal corrugated hose, a metal net sleeve coated outside the metal corrugated hose and metal buckling rings which are positioned at two ends of the metal corrugated hose and tightly hoop the metal net sleeve to the metal corrugated hose; the bent pipe section consists of a metal bent pipe and a built-in joint welded at one end of the metal bent pipe;

the built-in joint is provided with a disc end, a built-in section and a reducing section, wherein the outer diameter of the disc end is matched with the outer diameter of the metal corrugated pipe, and the end faces of the disc end and the metal corrugated pipe are fixedly connected in a butt welding mode; the sum of the lengths of the disc end and the built-in section is matched with the length of the extension section of the metal mesh sleeve; the diameter of the reducing section is matched with that of the metal bent pipe.

2. The metal hose for screw air compressors according to claim 1, characterized in that: the bent pipe sections at the two ends are respectively a plane bent pipe section and a space bent pipe section, and the space bent pipe sections are integrally bent and formed.

3. The metal hose for screw air compressors according to claim 2, characterized in that: a groove is arranged between the disc end and the built-in section.

4. The metal hose for screw air compressors according to claim 3, characterized in that: the built-in section is transited to the reducing section through the conical section.