End face sealing structure of screw air compressor

Abstract

The utility model provides an end face sealing structure of a screw air compressor, which relates to the technical field of screw air compressors and comprises a machine body and a sealing structure. An end cover is fixedly connected to one end of the machine body, an inlet is formed in the top of the end cover, an outlet is formed in the bottom of the machine body, a sealing structure is arranged at the end of the machine body, and the sealing structure comprises a connecting protruding column fixedly connected to the end of the machine body, and an assembling ring groove is formed in the inner side wall of the connecting protruding column; the fixed inner ring is fixedly connected into the assembly ring groove, mounting carrying grooves are formed in the two sides of the assembly ring groove, through the arrangement of the sealing structure, the attaching shaft ring and the rotating belt shaft are made of special materials, the sealing contact faces of the attaching shaft ring and the rotating belt shaft can be tightly attached after precision machining, leakage of compressed air is effectively reduced, and the service life of the rotating belt shaft is prolonged. Meanwhile, under the action of the elastic piece, the pre-tightening force can be automatically adjusted according to the abrasion condition of the sealing face, it is guaranteed that the sealing face is tightly attached all the time, and the sealing performance is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of screw air compressor technology, and more specifically, it relates to a screw air compressor end face sealing structure. Background Technology

[0002] Screw air compressors are common air compression devices widely used in industrial production, construction, and other fields. During the operation of a screw air compressor, the sealing of both ends of the screw rotor along its axial direction is crucial. If compressed air leaks at either end of the screw rotor, it will lead to a reduction in the compressor's discharge volume, decreased compression efficiency, increased energy consumption, and may also affect the normal operation and service life of the equipment.

[0003] Based on the above, the sealing surface fit and stability of the existing screw air compressor end face sealing structure are poor, making it difficult to effectively prevent compressed air leakage. In particular, the sealing effect is greatly reduced when the air compressor operating conditions change. Utility Model Content

[0004] To address the aforementioned technical problems, this disclosure relates to a screw air compressor end face sealing structure. This structure solves the problem of poor sealing surface fit and stability in existing screw air compressor end face sealing structures, making it difficult to effectively prevent compressed air leakage. By designing the sealing structure, the fitting collar and rotating belt shaft are made of special materials, allowing their sealing contact surfaces to achieve a tight fit after precision machining. This effectively reduces compressed air leakage. Simultaneously, under the action of the elastic element, the preload can be automatically adjusted according to the wear condition of the sealing surface, ensuring that the sealing surface always maintains a tight fit, greatly improving sealing performance. Furthermore, the disassembly structure allows maintenance personnel to quickly remove the filter plate from the air inlet without the need for complex tools or significant time expenditure, greatly simplifying the process, reducing maintenance difficulty, shortening the maintenance cycle, and improving equipment maintainability.

[0005] This utility model discloses a screw air compressor end face sealing structure, which is achieved by the following specific technical means:

[0006] In a first aspect, this disclosure provides a screw air compressor end face sealing structure, specifically including: a body and a sealing structure;

[0007] An end cap is fixedly connected to one end of the machine body. The top of the end cap has an inlet, and the bottom of the machine body has an outlet. The end of the machine body has a sealing structure, which includes the following components:

[0008] Connecting protrusion: It is fixedly connected to the end of the machine body, and the inner side wall of the connecting protrusion is provided with an assembly ring groove;

[0009] The fixed inner ring is fixedly connected in the assembly ring groove, and installation load grooves are formed at two sides of the assembly ring groove, and a first stop ring is installed in the installation load groove;

[0010] The elastic member is arranged in the fixed inner ring, and the fixed inner ring is fixedly connected with the fitting shaft ring through the elastic member;

[0011] The rotor shaft is rotatably installed in the machine body, and a rotor is fixedly connected to the middle of the rotor shaft, and rotating belt shafts are fixedly connected to the outer sides of the two ends of the rotor shaft, and the outer side walls of the rotating belt shafts are fitted with the fitting shaft ring, and sealing inner grooves are formed at the inner sides of the two ends of the fixed inner ring, and a second stop ring is installed in the sealing inner groove, and the second stop ring is arranged at the two sides of the rotating belt shaft.

[0012] In at least some embodiments, the inlet is provided with a dismounting structure, and the dismounting structure comprises a fixed support frame, sliding rails and a fixed vertical plate, the inlet is fixedly connected with the fixed support frame, the two sides of the fixed support frame are fixedly connected with the sliding rails, and one end of the sliding rail is fixedly connected with the fixed vertical plate.

[0013] In at least some embodiments, a connecting sliding rod is fixedly connected between the fixed vertical plate and the fixed support frame, a limiting convex column is fixedly connected to the outer side of the connecting sliding rod, and a spring is sleeved to the outer side of the connecting sliding rod.

[0014] In at least some embodiments, an extrusion ring is arranged on the outer side of the connecting sliding rod, a limiting arc groove is formed in the inner side of the extrusion ring, and an extension convex plate is fixedly connected to the opposite end of the extrusion ring.

[0015] In at least some embodiments, one end of the fixed support frame is fixedly connected with a fixed support plate, and a butt joint slot is formed in the fixed support plate.

[0016] In at least some embodiments, plug-in frames are inserted and arranged in the sliding rails, filter plates are arranged between the plug-in frames, butt joint plugs are fixedly connected to one end of the plug-in frame, the butt joint plugs are fitted and arranged in the butt joint slots, limiting insertion holes are formed in the butt joint plugs, and limiting pins are inserted and arranged in the limiting insertion holes.

[0017] The screw air compressor end face sealing structure has the advantages that:

[0018] 1. The fitting shaft ring and the rotating belt shaft are made of special materials, so that the sealing contact surfaces of the two can be tightly fitted after precise machining, effectively reducing the leakage of compressed air, and under the action of the elastic member, the pre-tightening force can be automatically adjusted according to the wear condition of the sealing surface, so that the sealing surface can always be tightly fitted, and the sealing performance is greatly improved.

[0019] 2、Through the setting of the dismounting structure, the filter plate can be quickly taken out from the air inlet without the help of complex tools or the consumption of a large amount of time, so that the process is greatly simplified, the maintenance difficulty is reduced, the maintenance period is shortened, and the equipment maintainability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the utility model.

[0021] Figure 2 is a sealing structure partial section structure schematic diagram of the utility model.

[0022] Figure 3 is a sealing structure partial assembly structure schematic diagram of the utility model.

[0023] Figure 4 is a dismounting structure schematic diagram of the utility model.

[0024] Figure 5 is a dismounting structure split structure schematic diagram of the utility model.

[0025] Figure 6 is a structure schematic diagram of the insertion frame and the butt joint insertion block in the dismounting structure of the utility model.

[0026] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0027] 1, the machine body;

[0028] 101, the end cover;

[0029] 102, the inlet;

[0030] 103, the outlet;

[0031] 2, the sealing structure;

[0032] 201, the connecting convex column;2011, the assembly ring groove;

[0033] 202, the fixed inner ring;2021, the installation load groove;2022, the first stop ring;

[0034] 203, the elastic member;2031, the fit shaft ring;

[0035] 204, the rotor shaft;2041, the rotor;2042, the rotation belt shaft;2043, the sealing inner groove;2044, the second stop ring;

[0036] 3, the dismounting structure;

[0037] 301, the fixed support frame;3011, the slide rail;3012, the fixed vertical plate;3013, the connecting slide bar;3014, the limiting convex column;3015, the spring;

[0038] 302, extrusion ring; 3021, limiting arc groove; 3022, extension tab plate;

[0039] 303, fixed support plate; 3031, butt joint slot; 3032, limiting pin;

[0040] 304, insertion frame; 3041, filter plate; 3042, butt joint block; 3043, limiting jack. DETAILED DESCRIPTION

[0041] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0042] Example one: as shown in the accompanying Figure 1 to the accompanying Figure 6 :

[0043] The utility model provides a screw air compressor end face sealing structure, include: machine body 1 and sealing structure 2;

[0044] One end of machine body 1 is fixedly connected with end cover 101, the top of end cover 101 is equipped with import 102, the bottom of machine body 1 is equipped with export 103, and the end of machine body 1 is equipped with sealing structure 2, and sealing structure 2 includes the following components:

[0045] Connecting convex column 201: fixedly connected in the end of machine body 1, and the inner side wall of connecting convex column 201 is provided with assembly ring groove 2011;

[0046] Fixed inner ring 202: fixedly connected in assembly ring groove 2011, and both sides of assembly ring groove 2011 are provided with installation load groove 2021, and first retaining ring 2022 is installed in installation load groove 2021;

[0047] Elastic member 203: be located in fixed inner ring 202, and fixed inner ring 202 is fixedly connected with the abutment shaft ring 2031 through elastic member 203;

[0048] Rotor shaft 204, rotationally installed in machine body 1, and the middle of rotor shaft 204 is fixedly connected with rotor 2041, and the outer side of both ends of rotor shaft 204 is fixedly connected with rotating belt shaft 2042, and the outer side wall of rotating belt shaft 2042 is in abutment with the abutment shaft ring 2031, and both ends of the inner side of fixed inner ring 202 are provided with sealing inner groove 2043, and second retaining ring 2044 is installed in sealing inner groove 2043, and second retaining ring 2044 is located at both sides of rotating belt shaft 2042.

[0049] The fixed inner ring 202 and the fitting shaft ring 2031 are made of ceramic material, while the rotating belt shaft 2042 is made of silicon carbide material. By machining the roughness of the contact surface between the rotating belt shaft 2042 and the fitting shaft ring 2031, it is made to fit tightly with the fitting shaft ring 2031. The elastic element 203 is a wave spring, which can automatically adjust the preload according to the wear of the sealing surface to ensure that the sealing surface always remains tightly fitted. The first retaining ring 2022 and the second retaining ring 2044 can play an auxiliary sealing role to prevent compressed air from leaking from the side.

[0050] Example 2: Based on Example 1, wherein, as Figures 4 to 6 As shown, a disassembly structure 3 is provided at the inlet 102. The disassembly structure 3 includes a fixed support frame 301, a slide rail 3011, and a fixed vertical plate 3012. The fixed support frame 301 is fixedly connected at the inlet 102. The slide rail 3011 is fixedly connected to both sides of the fixed support frame 301. The fixed vertical plate 3012 is fixedly connected to one end of the slide rail 3011.

[0051] A connecting slide rod 3013 is fixedly connected between the fixed vertical plate 3012 and the fixed support frame 301. A limiting protrusion 3014 is fixedly connected to the outside of the connecting slide rod 3013, and a spring 3015 is fitted on the outside of the connecting slide rod 3013.

[0052] A compression ring 302 is provided on the outer side of the connecting slide rod 3013, and a limiting arc groove 3021 is provided on the inner side of the compression ring 302. An extension protrusion 3022 is fixedly connected to one end of the compression ring 302.

[0053] One end of the fixed support frame 301 is fixedly connected to a fixed support plate 303, and the fixed support plate 303 is provided with a docking slot 3031.

[0054] A frame 304 is inserted into the slide rail 3011, and a filter plate 3041 is provided between the frames 304. A mating block 3042 is fixedly connected to one end of the frame 304. The mating block 3042 is fitted into the mating slot 3031, and a limit hole 3043 is provided on the mating block 3042. A limit pin 3032 is inserted into the limit hole 3043.

[0055] When installing the filter plate 3041, only need to insert the frame 304 into the slide rail 3011, however, the frame 304 moves to push the extension tab 3022 to move, the extension tab 3022 drives the extrusion ring 302 to extrude the spring 3015 connected to the slide rod 3013, so that the spring 3015 is elastically deformed, at the same time, the butt joint block 3042 at one end of the frame 304 is inserted into the butt joint slot 3031, at this time, the limiting pin 3032 is inserted into the limiting hole 3043, so that the installation is completed, when disassembling, only need to pull out the limiting pin 3032, at this time, the spring 3015 loses the pressure, so as to release the elasticity, so as to push the extrusion ring 302 to move, the extrusion ring 302 drives the extension tab 3022 to push out the frame 304, so that the disassembly is completed.

[0056] The specific use mode and effect of the embodiment are as follows:

[0057] In the utility model, the fitting shaft ring 2031 and the rotating shaft 2042 are made of special materials, the sealing surfaces of the two are precisely processed, and the two can be tightly fitted, so that the leakage of compressed air is effectively reduced, and under the action of the elastic member 203, the pre-tightening force can be automatically adjusted according to the wear condition of the sealing surface, so that the sealing surface is always tightly fitted, the sealing performance is greatly improved, when the equipment inhales air through the inlet 102, the dust, sand particles and other solid impurities in the air are intercepted by the filter plate 3041, however, the filter plate 3041 needs to be disassembled and cleaned or replaced for a long time, at this time, only need to pull out the limiting pin 3032, at this time, the spring 3015 loses the pressure, so as to release the elasticity, so as to push the extrusion ring 302 to move, the extrusion ring 302 drives the extension tab 3022 to push out the frame 304, so that the disassembly is completed, when installing, the frame 304 is inserted into the slide rail 3011, however, the frame 304 moves to push the extension tab 3022 to move, the extension tab 3022 drives the extrusion ring 302 to extrude the spring 3015 connected to the slide rod 3013, so that the spring 3015 is elastically deformed, at the same time, the butt joint block 3042 at one end of the frame 304 is inserted into the butt joint slot 3031, at this time, the limiting pin 3032 is inserted into the limiting hole 3043, so that the installation is completed, so that the maintenance personnel can quickly take out the filter plate from the air inlet without the help of complex tools or consuming a large amount of time, the process is greatly simplified, the maintenance difficulty is reduced, the maintenance period is shortened, and the maintainability of the equipment is improved.

Claims

1. A screw air compressor end face seal structure, comprising: Body and sealing structure One end of the body is fixedly connected with an end cover, the top of the end cover is provided with an inlet, the bottom of the body is provided with an outlet, and the end of the body is provided with a sealing structure, characterized in that the sealing structure comprises the following components: The connecting convex column is fixedly connected to the end of the body, and the inner side wall of the connecting convex column is provided with an assembly ring groove; The fixed inner ring is fixedly connected in the assembly ring groove, and the two sides of the assembly ring groove are provided with mounting load grooves, and the first retainer ring is mounted in the mounting load grooves; The elastic member is arranged in the fixed inner ring, and the fixed inner ring is fixedly connected with the matching shaft ring through the elastic member; The rotor shaft is rotatably installed in the body, the middle part of the rotor shaft is fixedly connected with the rotor, and the two ends of the rotor shaft are fixedly connected with the rotating belt shaft, the outer side wall of the rotating belt shaft is matched with the matching shaft ring, the two ends of the inner side of the fixed inner ring are provided with sealing inner grooves, and the second retainer ring is mounted in the sealing inner grooves, and the second retainer ring is arranged on the two sides of the rotating belt shaft.

2. A screw air compressor end face seal as set forth in claim 1 wherein: The inlet is provided with a dismounting structure, the dismounting structure comprises a fixed support frame, a sliding rail and a fixed vertical plate, the inlet is fixedly connected with the fixed support frame, the two sides of the fixed support frame are fixedly connected with the sliding rails, and one end of the sliding rail is fixedly connected with the fixed vertical plate.

3. A screw air compressor end face seal as set forth in claim 2 wherein: The fixed vertical plate and the fixed support frame are fixedly connected with the connecting sliding rod, the outer side of the connecting sliding rod is fixedly connected with the limiting convex column, and the outer side of the connecting sliding rod is sleeved with the spring.

4. A screw air compressor end face seal as set forth in claim 3 wherein: The outer side of the connecting sliding rod is provided with the extrusion ring, the inner side of the extrusion ring is provided with the limiting arc groove, and the opposite end of the extrusion ring is fixedly connected with the extension convex plate.

5. A face seal for a screw air compressor as set forth in claim 2, wherein: One end of the fixed support frame is fixedly connected with the fixed support plate, and the fixed support plate is provided with the butt joint slot.

6. A face seal for a screw air compressor as set forth in claim 2, wherein: The sliding rail is inserted with the insertion frame, the insertion frame is provided with the filter plate, one end of the insertion frame is fixedly connected with the butt joint plug, the butt joint plug is matched and inserted into the butt joint slot, and the butt joint plug is provided with the limiting hole, and the limiting pin is inserted into the limiting hole.

Images