CN214837108U - Variable-pitch screw compressor - Google Patents

Abstract

The utility model relates to a screw compressor technical field has especially related to a variable pitch screw compressor, and its structure includes: the air conditioner comprises a base, a machine shell, an exhaust flange, a driving shaft, an end cover, an air inlet flange, a female rotor, a male rotor, a first pitch area, a second pitch area, a third pitch area and an exhaust bearing seat, wherein the machine shell and the base are of an integrated structure, the end cover is arranged on one side of the machine shell, the exhaust bearing seat is arranged on the other side of the machine shell, the screw compressor adopting the three screw pitch zone male and female rotors has remarkable improvement on the aspects of improving the air intake and exhaust efficiency, reducing the energy requirement, reducing the resistance, slowly air intake and quickly compressing the air flow rate, reducing the volume of the air compressor, reducing the manufacturing cost, shortening the air intake and exhaust process, reducing the triangular area of air leakage and reducing the vibration, thereby greatly reducing the internal loss and the energy consumption of the compressor.

Description

Variable-pitch screw compressor

Technical Field

The utility model relates to a screw compressor technical field has especially related to a variable pitch screw compressor.

Background

The screw compressor is used for compressing air and providing power for systems such as factory production lines, engineering machinery and the like, compared with the traditional piston type air compressor, the screw compressor has the characteristics of high energy efficiency, compact structure, low noise and the like, and the trend of gradually replacing the piston type air compressor is achieved in various fields in recent years.

SUMMERY OF THE UTILITY MODEL

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The utility model aims to overcome the above-mentioned not enough, provide a variable pitch helical-lobe compressor.

In order to achieve the above object, the technical solution of the present invention is: a variable pitch screw compressor structurally comprises: the base, the casing, the exhaust flange, the drive shaft, the end cover, the air intake flange, female rotor, male rotor, first pitch district, the second pitch district, the third pitch district, the exhaust bearing frame, casing and base formula structure as an organic whole, casing one side is provided with the end cover, the opposite side is provided with the exhaust bearing frame, drive shaft and female rotor formula structure as an organic whole, male rotor meshes with female rotor mutually, both sides are provided with air intake flange and exhaust flange respectively about the casing, all install first pitch district on male rotor and the female rotor, the second pitch district, the third pitch district, first pitch district, the pitch between second pitch district and the third pitch district is crescent earlier then reduces gradually.

Preferably, the outer walls of the opening ends of the exhaust flange and the air inlet flange are both connected with rubber sealing rings.

Preferably, the pitches of the first pitch zone, the second pitch zone and the third pitch zone on the female rotor are respectively 300mm-900mm-300 mm.

Preferably, the pitches of the first pitch zone, the second pitch zone and the third pitch zone on the male rotor are respectively 500mm-1500mm-500 mm.

Preferably, the first pitch zone and the third pitch zone on the female rotor and the male rotor are equal pitch zones, and the second pitch zone is a variable pitch zone.

Preferably, the axis of the male rotor and the axis of the female rotor are parallel.

Through adopting foretell technical scheme, the beneficial effects of the utility model are that: the screw compressor adopting the three screw pitch zone male and female rotors has remarkable improvement on the aspects of improving the air intake and exhaust efficiency, reducing the energy requirement, reducing the resistance, slowly air intake and quickly compressing the air flow rate, reducing the volume of the air compressor, reducing the manufacturing cost, shortening the air intake and exhaust process, reducing the triangular area of air leakage and reducing the vibration, thereby greatly reducing the internal loss and the energy consumption of the compressor.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Undoubtedly, such and other objects of the present invention will become more apparent after a detailed description of the preferred embodiments described below with reference to the various drawings and drawings.

These and other objects, features and advantages of the present invention will become more apparent from the following detailed description of one or more preferred embodiments, taken in conjunction with the accompanying drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a variable pitch screw compressor according to the present invention;

FIG. 2 is a schematic structural view of the female rotor and the male rotor of the present invention;

fig. 3 is a schematic top view of the female rotor and the male rotor of the present invention.

Description of the main reference numerals: the air compressor comprises a base-1, a machine shell-2, an exhaust flange-3, a driving shaft-4, an end cover-5, an air inlet flange-6, a female rotor-7, a male rotor-8, a first screw pitch area-9, a second screw pitch area-10, a third screw pitch area-11 and an exhaust bearing seat-12.

Detailed Description

The following detailed description will be provided with reference to the accompanying drawings and embodiments, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, unless conflicting, the embodiments and features of the embodiments in the present application may be combined with each other, and the technical solutions formed are all within the scope of the present application.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present embodiments. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details or with a specific implementation described herein.

Referring to fig. 1-3, the present invention provides a variable pitch screw compressor, which comprises: the air compressor comprises a base 1, a machine shell 2, an exhaust flange 3, a driving shaft 4, an end cover 5, an air inlet flange 6, a female rotor 7, a male rotor 8, a first screw pitch area 9, a second screw pitch area 10, a third screw pitch area 11 and an exhaust bearing seat 12, wherein the machine shell 2 and the base 1 are in an integrated structure, the end cover 5 is arranged on one side of the machine shell 2, the exhaust bearing seat 12 is arranged on the other side of the machine shell, the driving shaft 4 and the female rotor 7 are in an integrated structure, the male rotor 8 is meshed with the female rotor 7, the air inlet flange 6 and the exhaust flange 3 are respectively arranged on the upper side and the lower side of the machine shell 2, the male rotor 8 and the female rotor 7 are respectively provided with the first screw pitch area 9, the second screw pitch area 10 and the third screw pitch area 11, the screw pitches between the first screw pitch area 9, the second screw pitch area 10 and the third screw pitch area 11 are gradually increased and then gradually reduced, the exhaust flange 3 and the outer walls of the opening ends of the air inlet flange 6 are respectively connected with rubber sealing rings, the pitches of the first pitch area 9, the second pitch area 10 and the third pitch area 11 on the female rotor 7 are respectively 300mm-900mm-300mm, the pitches of the first pitch area 9, the second pitch area 10 and the third pitch area 11 on the male rotor 8 are respectively 500mm-1500mm-500mm, the first pitch area 9 and the third pitch area 11 on the female rotor 7 and the male rotor 8 are equal pitch areas, the second pitch area 10 is a variable pitch area, and the axis of the male rotor 8 is parallel to the axis of the female rotor 7.

When the compressor is used, the female rotor 7 and the male rotor 8 are matched into the shell 2, when an operator uses the compressor, the driving shaft 4 is driven to rotate mechanically through an external mechanism, the female rotor 7 and the male rotor 8 rotate along with the driving shaft, then gas is introduced into the shell 2 through the gas inlet flange 6, the introduced gas firstly passes through the first pitch area 9, the first pitch area 9 and the second pitch area 10 are gas suction areas, the process that the pitch is changed from small to large and then is changed from large to small prolongs the gas suction process, so that the gas suction is more sufficient, the pitch of the first pitch area 9 is reduced than that of the second pitch area 10, so that the gas is quickly transmitted to the second pitch area 10 for compression, and after the compression is finished, the pitch of the third pitch area 11 is reduced than that of the second pitch area 10, so that the gas is quickly transmitted to the exhaust flange 3 and is discharged from the third pitch area 11 to be a compression area, the compression speed can be accelerated by adopting small pitch, The screw compressor adopting the three pitch zone male and female rotors has the advantages of improving air intake and exhaust efficiency, reducing energy requirements, reducing resistance, improving gas flow rate, reducing air compressor volume, reducing manufacturing cost, shortening air intake and exhaust processes, reducing triangular area of gas leakage and reducing vibration.

It is to be understood that the embodiments disclosed herein are not limited to the particular process steps or materials disclosed herein, but rather, are extended to equivalents thereof as would be understood by those of ordinary skill in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the present invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth.

Claims (6)

1. A variable pitch screw compressor is characterized in that the structure thereof comprises: base (1), casing (2), exhaust flange (3), drive shaft (4), end cover (5), air intake flange (6), female rotor (7), male rotor (8), first pitch district (9), second pitch district (10), third pitch district (11), exhaust bearing frame (12), casing (2) and base (1) are integrated structure, casing (2) one side is provided with end cover (5), the opposite side is provided with exhaust bearing frame (12), drive shaft (4) and female rotor (7) are integrated structure, male rotor (8) and female rotor (7) mesh mutually, casing (2) upper and lower both sides are provided with air intake flange (6) and exhaust flange (3) respectively, all install first pitch district (9) on male rotor (8) and female rotor (7), second pitch district (10), third pitch district (11), first pitch district (9), The pitch between the second pitch zone (10) and the third pitch zone (11) is gradually increased and then gradually decreased.

2. A variable pitch screw compressor as claimed in claim 1, wherein: the outer walls of the opening ends of the exhaust flange (3) and the air inlet flange (6) are connected with rubber sealing rings.

3. A variable pitch screw compressor as claimed in claim 1, wherein: the pitches of the first pitch area (9), the second pitch area (10) and the third pitch area (11) on the female rotor (7) are respectively 300-900-300 mm.

4. A variable pitch screw compressor as claimed in claim 1, wherein: the pitches of the first pitch area (9), the second pitch area (10) and the third pitch area (11) on the male rotor (8) are respectively 500mm-1500mm-500 mm.

5. A variable pitch screw compressor as claimed in claim 1, wherein: the first pitch area (9) and the third pitch area (11) on the female rotor (7) and the male rotor (8) are equal pitch areas, and the second pitch area (10) is a variable pitch area.

6. A variable pitch screw compressor as claimed in claim 1, wherein: the axis of the female rotor (7) is parallel to the axis of the male rotor (8).

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