Sealing structure of compressed air high-speed jet device

Abstract

The utility model relates to a sealing structure of a compressed air high-speed jet device. Comprising a shell, an end cover used for blocking the shell, an electromagnetic pulse valve used for controlling on-off of airflow, a blowing pipe forming a sealing function with a diaphragm on the electromagnetic pulse valve, and a flange used for fixing the blowing pipe. End covers are mounted at openings in the two ends of the shell through bolts; a plurality of groups of through holes in a linear array are formed in the shell; the through hole penetrates through the upper and lower ends of the shell; and an electromagnetic pulse valve is mounted at the top end of the shell and at each group of through holes through bolts. The problems that in an existing technical scheme, a blowing pipe and a shell are poor in sealing performance, complex in welding process, prone to corrosion and the like are solved, and meanwhile the technical problems that a traditional structure depends on complex sealing gasket combination, the requirement for assembly precision is high, cost is greatly increased, a sealing face is prone to abrasion under high-speed airflow scouring, the local leakage rate is increased, and overall airflow uniformity is affected are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a jet device field especially relates to a sealing structure of compressed air high -speed jet device. BACKGROUND

[0002] The compressed air high -speed jet device is as the core equipment in the field such as air high -speed impact, industrial dust removal, material conveying, and its sealing performance directly influences system efficiency and operating reliability. The traditional jet device often adopts threaded seal and welding structure, and the following technical defects exist: first, threaded seal is easy to leak under high -pressure gas flow environment due to vibration loosening, and frequent maintenance is needed;Second, welding connection is used between the jet pipe and the shell, and deformation is easy to occur, which influences the sealing property, and moreover, lacking buffer seal design, and long -term pulse impact is easy to produce metal fatigue crack;Third, the traditional structure adopts cast iron or steel material, and the weight is big and easy to rust, especially in humid or corrosive environment, the service life is shortened significantly. In the prior art, part of the improvement scheme improves the sealing property by increasing sealing glue or winding raw material belt, but there are problems of complex construction, poor temperature resistance, and when disassembling and maintaining, the original sealing layer needs to be damaged, and the reusability is low.

[0003] For multi -jet array type jet device, the sealing problem is more prominent: the traditional structure relies on complex sealing gasket combination, and the assembly precision requirement is high, and the cost increases greatly;The sealing surface is easy to wear under high -speed gas flow scouring, leading to the rise of local leakage rate, influencing the overall gas flow uniformity. In addition, the sealing property of the jet pipe and the shell is poor, the welding process is complex and easy to corrode, the shell and the end cover of the traditional device adopt welding or integral casting process, and when maintaining, the shell needs to be cut, and quick disassembly and assembly are difficult to realize. A jet device structure with high sealing property, light weight and modular maintenance is urgently needed to solve the technical pain points of high leakage rate, high maintenance cost and poor environmental adaptability of the traditional design. UTILITY MODEL CONTENTS

[0004] The sealing structure of the compressed air high -speed jet device provided by the embodiment of the application solves the problems of poor sealing property of the jet pipe and the shell, complex welding process and easy corrosion in the prior art, and simultaneously solves the technical problems that the traditional structure relies on complex sealing gasket combination, the assembly precision requirement is high, the cost increases greatly, the sealing surface is easy to wear under high -speed gas flow scouring, leading to the rise of local leakage rate, and influencing the overall gas flow uniformity.

[0005] The technical scheme adopted by the embodiment of the application is as follows:

[0006] The utility model provides a sealing structure of compressed air high -speed air jet device, including the shell, the end cap for blocking the shell, the electromagnetic pulse valve for controlling the on -off of airflow, the spout pipe with the sealing function of diaphragm on the electromagnetic pulse valve forms and is used for fixing spout pipe flange, the end cap is bolted on both ends of the shell, the shell is equipped with a plurality of groups of through -hole of linear array, the through -hole is through the upper and lower ends of the shell, the electromagnetic pulse valve is bolted on the top end of the shell at each group of through -hole position, the flange is bolted on the bottom end of the shell at each group of through -hole position, and the spout pipe is installed between each group of electromagnetic pulse valve and each group of flange.

[0007] Further technical solutions are: an end cap sealing ring is arranged between the end cap and the shell; a first O-shaped sealing ring is arranged between the spout pipe and the shell; and a second O-shaped sealing ring is arranged between the spout pipe and the flange.

[0008] Further technical solutions are: the shell, the end cap, the electromagnetic pulse valve, the spout pipe, and the flange are all made of aluminum alloy.

[0009] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0010] 1. Due to the arrangement of the shell, the end cap, the electromagnetic pulse valve, the spout pipe, and the flange, the structure is designed with triple sealing of the end cap sealing ring, the first O-shaped sealing ring, and the second O-shaped sealing ring to build a composite axial and radial sealing system, which reduces the leakage rate compared to traditional single-point sealing. The aluminum alloy shell and components achieve overall lightweight, reducing the weight compared to cast iron structure, and the anodizing treatment improves the salt mist corrosion resistance, which is suitable for harsh environments such as chemical industry and ocean. The modular design allows individual spout pipes to be independently disassembled, eliminating the need for shutdown and overall disassembly during maintenance, and improving maintenance efficiency. The end face sealing ring replaces the traditional threaded seal, eliminating the risk of vibration loosening, and the O-ring elastic compensation processing tolerance ensures the tight fit of the sealing surface under long-term high-pressure impact. The linear array of through holes optimizes airflow distribution uniformity, providing a reliable foundation for multiple jet ports to work together, and the overall structure is improved through material innovation and sealing level optimization, solving the industry problems of short sealing life and high maintenance cost of high-speed air jet devices. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a sectional view of the sealing structure of the compressed air high-speed air jet device in the embodiments of the present application.

[0012] Figure 2 It is an exploded view of the sealing structure of the compressed air high-speed air jet device in the embodiments of the present application.

[0013] In the figure: 1, shell; 11, through hole; 2, end cover; 3, electromagnetic pulse valve; 4, blowing pipe; 5, flange; 6, end cover sealing ring; 7, first O-shaped sealing ring; 8, second O-shaped sealing ring. DETAILED DESCRIPTION

[0014] The sealing structure of the compressed air high-speed jet device provided by the embodiments of the present application solves the problems of poor sealing between the blowing pipe and the shell, complex welding process and easy corrosion in the prior art, and the technical problems of high assembly precision requirement, large cost increase and influence on overall airflow uniformity in the traditional structure.

[0015] The technical solutions in the embodiments of the present application are as follows to solve the above problems:

[0016] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0017] A sealing structure of a compressed air high-speed jet device, as shown in Figure 1 and Figure 2 , comprises a shell 1, an end cover 2 for plugging the shell 1, an electromagnetic pulse valve 3 for controlling the on-off of airflow, a blowing pipe 4 for forming a sealing function with a diaphragm on the electromagnetic pulse valve 3, and a flange 5 for fixing the blowing pipe 4; the end cover 2 is bolted at both ends of the shell 1; a plurality of groups of through holes 11 in a linear array are formed on the shell 1; the through holes 11 penetrate the upper and lower ends of the shell 1; the electromagnetic pulse valve 3 is bolted at the position of each group of through holes 11 at the top end of the shell 1; the flange 5 is bolted at the position of each group of through holes 11 at the bottom end of the shell 1; the blowing pipe 4 is installed between each group of electromagnetic pulse valves 3 and each group of flanges 5.

[0018] An end cover sealing ring 6 is arranged between the connection between the end cover 2 and the shell 1; a first O-shaped sealing ring 7 is arranged between the connection between the blowing pipe 4 and the shell 1; a second O-shaped sealing ring 8 is arranged between the connection between the blowing pipe 4 and the flange 5.

[0019] The shell 1, the end cover 2, the electromagnetic pulse valve 3, the blowing pipe 4 and the flange 5 are all made of aluminum alloy.

[0020] Embodiment:

[0021] The sealing structure comprises an aluminum alloy shell 1, the ends of the shell 1 are provided with end covers 2 through bolt mounting, and the end covers 2 and the shell 1 are provided with end cover sealing rings 6 to realize end face sealing. A plurality of groups of linear array through holes 11 are formed in the upper and lower ends of the shell 1, the top end of each through hole 11 is provided with an electromagnetic pulse valve 3 through bolt mounting, and the bottom end is provided with a flange 5, and the flange 5 and the shell 1 are provided with a second O-shaped sealing ring 8. The blowpipe 4 is connected with the electromagnetic pulse valve 3 and the flange 5 at both ends respectively, and the first O-shaped sealing ring 7 is arranged at the connection between the blowpipe 4 and the shell 1. All the sealing rings are made of high-temperature-resistant fluorine rubber material, and the surface of the aluminum alloy assembly is subjected to anodic oxidation treatment to improve corrosion resistance.

[0022] Operation flow:

[0023] Assemble the sealing structure: embed the end cover sealing ring 6 into the end face groove of the shell 1, align the end cover 2 and tighten the bolt;

[0024] Install the blow unit: the first O-shaped sealing ring 7 is sleeved into the bottom end of the blowpipe 4, connected with the electromagnetic pulse valve 3 after passing through the through hole 11 of the shell 1, and the bolt is locked;

[0025] Fix the flange end: the second O-shaped sealing ring 8 is sleeved into the bottom of the blowpipe 4, the flange 5 is installed and bolted with the shell 1;

[0026] Sealing detection: low-pressure air is introduced, and after checking that there is no leakage at each sealing ring, high-pressure operation is put into operation;

[0027] Maintenance and replacement: when the blowpipe 4 is disassembled, only the corresponding bolt needs to be loosened, and the remaining units can operate normally.

[0028] Advantages:

[0029] Due to the arrangement of the shell 1, the end cover 2, the electromagnetic pulse valve 3, the blowpipe 4 and the flange 5, the structure realizes three sealing designs of the end cover sealing ring 6, the first O-shaped sealing ring 7 and the second O-shaped sealing ring 8, and constructs an axial and radial composite sealing system, which reduces the leakage rate compared with the traditional single-point sealing. The aluminum alloy shell 1 and the components realize overall light weight, which reduces the weight compared with the cast iron structure, and the anodic oxidation treatment improves the salt mist corrosion resistance, which is suitable for harsh environments such as chemical industry and ocean. The modular design makes the single blowpipe 4 can be independently disassembled, and when maintaining, the whole does not need to be disassembled, so the maintenance efficiency is improved. The end face sealing ring 6 replaces the traditional threaded sealing, eliminates the risk of vibration loosening, and the O-shaped ring compensates for the processing tolerance, so as to ensure that the sealing surface is tightly attached under long-term high-pressure impact. The linear array through hole 11 optimizes the uniformity of airflow distribution, provides a reliable foundation for the coordinated operation of multiple spray ports, and the overall structure realizes material innovation and sealing level optimization, which solves the problems of short sealing life and high maintenance cost of high-speed jet device.

[0030] While the preferred embodiments of the application have been described, those skilled in the art will note that various modifications and changes can be made thereto without departing from the spirit and scope of the application. Accordingly, it is intended that all such modifications and changes be included within the scope of the application as claimed.

[0031] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A seal structure for a compressed air high speed jet device, characterized by, Including shell (1), the end cover (2) for blocking the shell (1), the electromagnetic pulse valve (3) for controlling the air flow on-off, the sealing function of the membrane piece with the blowing pipe (4) on the electromagnetic pulse valve (3) is formed and the flange (5) for fixing the blowing pipe (4);The end cover (2) is bolted on both ends of the opening of the shell (1);A plurality of groups of straight line arrays of through holes (11) are formed on the shell (1);The through hole (11) penetrates the upper and lower ends of the shell (1);The electromagnetic pulse valve (3) is bolted on the top end of the shell (1) at the position of each group of through holes (11);The flange (5) is bolted on the bottom end of the shell (1) at the position of each group of through holes (11);The blowing pipe (4) is installed between each group of electromagnetic pulse valves (3) and each group of flanges (5).

2. A seal for a compressed air high velocity air jet as defined in claim 1, wherein, The end cover (2) and the shell (1) are connected between the end cover sealing ring (6);The blowing pipe (4) and the shell (1) are connected between the first O-shaped sealing ring (7);The blowing pipe (4) and the flange (5) are connected between the second O-shaped sealing ring (8).

3. A seal for a compressed air high velocity air jet as defined in claim 2, wherein, The shell (1), the end cover (2), the electromagnetic pulse valve (3), the blowing pipe (4) and the flange (5) are all aluminum alloy materials.

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