Motor fan air inducing device of helium oil injection type screw compressor

Abstract

The utility model discloses a motor fan air inducing device of a helium oil injection type screw compressor. Comprising an air duct and an air guide box, an air inlet is formed in the outer side face of the air guide box, and the air duct is arranged on the inner side face of the air guide box; the diameter of the air guide cylinder is larger than that of the motor air cylinder, the air guide cylinder comprises an air guide part and a connecting part, the air guide part and the connecting part are connected into a whole, the air guide part is connected with the inner side face of the air guide box, the connecting part is connected with the motor air cylinder, and a gap formed between the inner wall of the connecting part and the outer wall of the motor air cylinder is filled with a sound absorption piece. The inner diameter of the sound absorption piece is the same as the outer diameter of the motor air duct; the air duct is made of an elastic material, the motor air duct is sleeved with the connecting part, an opening is formed in the bottom of the air duct, a clamping piece is arranged at the opening, and the air duct is detachably connected with the motor air duct through the clamping piece; and the motor air duct, the connecting part, the air guide part and the air guide box form an air guide channel. The motor air duct is clamped through the air guide duct, installation is convenient and fast, and centering and leveling are not affected.

Description

Technical field:

[0001] The utility model belongs to the technical field of screw compressors, and particularly relates to a motor fan air induction device of a helium oil-injected screw compressor. Background technology:

[0002] Existing helium oil-injected screw compressors generally adopt a motor direct drive mode, wherein the matching motor cooling mode is air cooling, and the motor is cooled by a cooling fan provided by the motor.

[0003] In order to introduce external air into the cooling fan, the motor wind tube needs to be connected to the air guide box, and the air guide box introduces external air into the cooling fan in the motor wind tube. During assembly, the motor wind tube needs to be inserted into the air guide box during the motor hoisting process, which is inconvenient to install. When the motor and the compressor host need to be aligned and leveled, the motor wind tube is still connected to the air guide box, which affects the alignment accuracy of the motor and the compressor host.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility model content:

[0005] The utility model aims to provide a motor fan air induction device for a helium oil-injected screw compressor, thereby overcoming the defects in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides an air induced draft device of a motor fan of a helium-injected screw compressor, comprising an air guide tube and an air guide box, the outer side surface of the air guide box being an air inlet, and the inner side surface of the air guide box being provided with an air guide tube; the diameter of the air guide tube is larger than the diameter of the motor air tube, and the air guide tube comprises an air guide portion and a connecting portion, the air guide portion and the connecting portion are connected as a whole, the air guide portion is connected to the inner side surface of the air guide box, the connecting portion is connected to the motor air tube, and a sound absorbing member is filled in the gap formed between the inner wall of the connecting portion and the outer wall of the motor air tube, and the inner diameter of the sound absorbing member is the same as the outer diameter of the motor air tube; the air guide tube is made of elastic material, the connecting portion is sleeved on the motor air tube, an opening is provided at the bottom of the air guide tube, a clamping member is provided at the opening, and the air guide tube is detachably connected to the motor air tube through the clamping member; the motor air tube, the connecting portion, the air guide portion and the air guide box form an air induced draft channel.

[0007] Preferably, in the technical solution, the sound absorbing member is a sound absorbing sponge.

[0008] Preferably, in the technical solution, the clamping member includes a clamping plate, bolts and nuts, and both sides of the opening protrude outward to form symmetrical clamping plates, and the clamping plates are fastened by bolts and nuts.

[0009] Preferably, in the technical solution, a wind guide plate is provided on the inner wall of the air guide part. The wind guide plate is inclined towards the sound-absorbing part. The front end of the wind guide plate contacts the rear end face of the sound-absorbing part. The wind guide plate guides the incoming air towards the motor air cylinder.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The motor air cylinder is clamped by the air guide cylinder. The air guide cylinder can be connected to the motor air cylinder in a loose or tight manner through the clamping part, and the installation is convenient and fast. When the motor and the compressor main unit are aligned and leveled, just loosen the clamping part, and the air guide cylinder can be separated from the motor air cylinder, which does not affect the alignment and leveling of the motor and the compressor main unit, and ensures the alignment and leveling accuracy. Description of the drawings:

[0012] Figure 1 It is a schematic structural diagram of the motor fan air guiding device of the helium oil-injected screw compressor of the utility model;

[0013] Figure 2 It is the front view of the air guide cylinder of the utility model;

[0014] Figure 3 It is the left view of the air guide cylinder of the utility model;

[0015] Figure 4 It is an assembly schematic diagram of the motor fan air guiding device of the helium oil-injected screw compressor of the utility model. Specific embodiments:

[0016] The following describes the specific embodiments of the utility model in detail, but it should be understood that the protection scope of the utility model is not limited by the specific embodiments.

[0017] Unless otherwise clearly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "having" etc. will be understood to include the stated elements or components, without excluding other elements or other components.

[0018] Such as Figures 1-4As shown, a motor fan air guiding device for a helium oil-injected screw compressor includes an air guiding cylinder 1 and an air guiding box 2. The outer side surface of the air guiding box 2 is an air inlet 20, and the air guiding cylinder 1 is arranged on the inner side surface of the air guiding box 2. The diameter of the air guiding cylinder 1 is larger than the diameter of the motor air cylinder 3. The air guiding cylinder 1 includes an air guiding part 10 and a connecting part 11. The air guiding part 10 and the connecting part 11 are integrally connected. The air guiding part 10 is connected to the inner side surface of the air guiding box 2, and the connecting part 11 is connected to the motor air cylinder 3. The gap formed between the inner wall of the connecting part 11 and the outer wall of the motor air cylinder 3 is filled with sound-absorbing sponge 12, and the inner diameter of the sound-absorbing sponge 12 is the same as the outer diameter of the motor air cylinder 3. The air guiding cylinder 1 is made of an elastic material. The connecting part 11 is sleeved on the motor air cylinder 3. An opening 13 is arranged at the bottom of the air guiding cylinder 1, and a clamping member is arranged at the opening 13. The clamping member includes a clamping plate 14 and a bolt and nut 15. Symmetrical clamping plates 14 protrude outward from both sides of the opening 13, and the clamping plates 14 are fastened by the bolt and nut 15. The air guiding cylinder 1 is detachably connected to the motor air cylinder 3 through the clamping member. An air guiding plate 16 is arranged on the inner wall of the air guiding part 10. The air guiding plate 16 is inclined towards the sound-absorbing sponge 12. The front end of the air guiding plate 16 contacts the rear end surface of the sound-absorbing sponge 12. The air guiding plate 16 guides the incoming air to the motor air cylinder 3. The motor air cylinder 3, the connecting part 11, the air guiding part 10, and the air guiding box 2 form an air guiding channel.

[0019] During use, external air enters the air guiding box 2 from the air inlet 20, is guided into the motor air cylinder 3 by the air guiding part 10 through the air guiding plate 16, and is sent into the motor 4 by the cooling fan. The air guiding cylinder 1 clamps the motor air cylinder 3, and the air guiding cylinder 1 is detachably and tightly connected to the motor air cylinder 3 through the clamping member, which is convenient and fast to install. When the motor 4 and the compressor main unit 5 are aligned and leveled, just loosen the clamping member, and the air guiding cylinder 1 can be separated from the motor air cylinder 3, which does not affect the alignment and leveling of the motor 4 and the compressor main unit 5, and ensures the alignment and leveling accuracy.

[0020] The foregoing description of the specific exemplary embodiments of the present invention is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and obviously, many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present invention, as well as various different selections and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A motor fan air induction device for a helium oil-injected screw compressor, characterized in that: The invention comprises an air guide tube and an air guide box, wherein the outer side surface of the air guide box is an air inlet, and the inner side surface of the air guide box is provided with an air guide tube; the diameter of the air guide tube is larger than the diameter of the motor air tube, and the air guide tube comprises an air guide portion and a connecting portion, the air guide portion and the connecting portion are connected as a whole, the air guide portion is connected to the inner side surface of the air guide box, the connecting portion is connected to the motor air tube, a sound absorbing member is filled in the gap formed between the inner wall of the connecting portion and the outer wall of the motor air tube, and the inner diameter of the sound absorbing member is the same as the outer diameter of the motor air tube; the air guide tube is made of elastic material, the connecting portion is sleeved on the motor air tube, an opening is provided at the bottom of the air guide tube, a clamping member is provided at the opening, and the air guide tube is detachably connected to the motor air tube through the clamping member; the motor air tube, the connecting portion, the air guide portion and the air guide box form an air induction channel.

2. The motor fan air induction device of the helium oil-injected screw compressor according to claim 1 is characterized in that: The sound absorbing part is a sound absorbing sponge.

3. The motor fan air induction device of the helium oil-injected screw compressor according to claim 1, characterized in that: The clamping piece comprises a clamping plate, bolts and nuts. Both sides of the opening protrude outward to form symmetrical clamping plates, and the clamping plates are fastened by bolts and nuts.

4. The motor fan air induction device of the helium oil-injected screw compressor according to claim 1, characterized in that: An air guide plate is arranged on the inner wall of the air guide part, the air guide plate is arranged obliquely toward the sound absorbing component, the front end of the air guide plate contacts the rear end surface of the sound absorbing component, and the air guide plate guides the incoming air to the motor wind tube.

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