CN218717512U - Screw air compressor and air inlet device thereof - Google Patents

Abstract

The disclosure relates to a screw air compressor and an air inlet device thereof. The air inlet device comprises an air filter box and an air inlet pipe which is connected and arranged between the machine head of the screw air compressor and the air filter box. The air filtering box comprises a first box body, a second box body and a filter element. The first box comprises an accommodating cavity for accommodating the filter element. The second box body is arranged on the first box body and is fixedly connected with the air inlet pipe. The air inlet device in this disclosure sets up the second box at the intake pipe and between holding the chamber for the intake pipe with hold the buffering space between the chamber. Noise that the aircraft nose from screw air compressor machine spread can advance into buffer space and then reach to holding the chamber again, just cuts down the noise of the aircraft nose of screw air compressor machine in the department that is relatively close from screw air compressor machine's aircraft nose promptly, and the noise has not spread this moment, and buffer space can slow down most noise to by a wide margin improved the effect of cutting down the noise.

Description

Screw air compressor and air inlet device thereof

Technical Field

The utility model relates to a screw compressor machine technical field especially relates to a screw compressor machine and hot blast blowpipe apparatus thereof.

Background

The independent air inlet device is usually established to current screw air compressor, and current air inlet device includes the air filter box to new trend mouthful department at the air filter box can set up labyrinth air inlet box, thereby alleviates the noise problem of screw air compressor's aircraft nose.

The existing air filter box is mainly connected with the machine head of the screw air compressor directly through the air inlet pipe, so that low-frequency noise generated when the machine head of the screw air compressor runs is directly transmitted to the air filter box and is diffused in the air filter box, and therefore all noises are hardly relieved effectively, and the effect of relieving the noises is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screw compressor and hot blast blowpipe apparatus thereof to solve at least partial problem among the correlation technique.

According to a first aspect of the present disclosure, an air intake device is provided, which is applied to a screw air compressor; the air inlet device comprises an air filter box and an air inlet pipe which is connected and arranged between the machine head of the screw air compressor and the air filter box; the air filtering box comprises a first box body, a second box body and a filter element; the first box body comprises an accommodating cavity for accommodating the filter element; the second box body is arranged on the first box body and is fixedly connected with the air inlet pipe.

Optionally, the second box comprises a first gas channel; the first gas channel comprises a gas outlet and a gas inlet; the gas channel is communicated with the accommodating cavity through the gas inlet; the gas channel is communicated with the gas channel in the gas inlet pipe through the gas outlet.

Optionally, an included angle a is formed between the gas flowing direction of the first gas channel and the gas outlet direction of the gas outlet; the included angle A is greater than or equal to 45 degrees and less than or equal to 135 degrees.

Optionally, an included angle B is formed between the gas flow direction of the first gas channel and the gas inlet direction of the gas inlet; the included angle B is greater than or equal to 45 ° and less than or equal to 135 °.

Optionally, along the air outlet direction of the air outlet, the projection of the air outlet on the first plane is not overlapped with the projection of the air inlet on the first plane;

wherein, the first plane is perpendicular with the direction of giving vent to anger of gas outlet.

Optionally, the air intake device further comprises a silencer; the silencer is at least partially located in the accommodating cavity and located at the air inlet.

Optionally, the air intake device further includes a baffle disposed in the first gas channel.

According to a second aspect of the present disclosure, a screw air compressor is provided, which includes a machine head and the air intake device as described above; the machine head of the screw air compressor comprises an air inlet communicated with the air inlet pipe; and the axial lead of the air inlet and the axial lead of the air outlet are coaxially distributed.

Optionally, the air inlet pipe comprises a linear pipe.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the air inlet device, the second box body is arranged between the air inlet pipe and the accommodating cavity, so that a buffer space is formed between the air inlet pipe and the accommodating cavity; noise that the aircraft nose from screw air compressor machine spread can advance into buffer space and then reach to holding the chamber again, just cuts down the noise of the aircraft nose of screw air compressor machine in the department that is relatively close from screw air compressor machine's aircraft nose promptly, and the noise has not spread this moment, and buffer space can slow down most noise to by a wide margin improved the effect of cutting down the noise.

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.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic view of an air intake device according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of an air intake device according to an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic gas flow diagram of a wind inlet device according to an exemplary embodiment of the present disclosure.

Description of reference numerals: 1. an air filter box; 2. a machine head; 3. an air inlet pipe; 10. a first case; 11. a second case; 12. a filter element; 13. an accommodating chamber; 14. a first gas passage; 140. an air outlet; 141. an air inlet; 4. a muffler; 15. a third box body; 16. a second gas passage; 17. and a baffle plate.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence. "multiple" or "a number" means two or more. Unless otherwise indicated, "front," "back," "lower," and/or "upper" and the like are for convenience of description and are not limited to a position or a spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used in the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

An air intake device as shown in fig. 1-3 is applied to a screw air compressor. The air inlet device comprises an air filter box 1 and an air inlet pipe 3 which is connected and arranged between a machine head 2 of the screw air compressor and the air filter box 1. The air filtration tank 1 includes a first tank 10, a second tank 11, and a filter element 12. The first casing 10 comprises a housing chamber 13 for housing the filter cartridge 12. The second box body 11 is arranged on the first box body 10 and is fixedly connected with the air inlet pipe 3.

The air inlet device in this disclosure sets up second box 11 between intake pipe 3 and hold chamber 13 for intake pipe 3 with hold the chamber 13 between have buffer space. Noise that the aircraft nose 2 of following screw air compressor spread can advance into buffer space and then reach to holding chamber 13 again, just cuts down the aircraft nose 2's of screw air compressor noise at the aircraft nose 2 that is close to from screw air compressor promptly, and the noise has not spread this moment, and buffer space can slow down most noise to by a wide margin improvement the effect of noise reduction.

The second casing 11 may be fixedly connected to the first casing 10 or integrally formed with the first casing. And the shape of the second case 11 may be a conventional case structure, and may also be a cylindrical, tubular or other irregular pattern. The present disclosure is not so limited.

In some embodiments, the intake device further includes a third casing 15. The third box 15 is arranged in the first box 10, the third box 15 is provided with a fresh air inlet, and a labyrinth structure is arranged at the fresh air inlet. Wherein, labyrinth structure can play the effect of filtering the new trend, simultaneously, can also weaken the noise that screw compressor's aircraft nose 2 spreads.

As shown in fig. 3, the second case 11 includes a first gas passage 14. The first gas channel 14 includes a gas outlet 140 and a gas inlet 141. The gas passage communicates with the accommodating chamber 13 through the gas inlet 141. The gas passage communicates with the gas passage in the gas inlet pipe 3 through the gas outlet 140. Noise that spreads from screw compressor's aircraft nose 2 can advance and get into first gas passage 14 then reach and hold chamber 13 again, just cuts down the noise of the aircraft nose 2 of screw compressor in the department that is close to screw compressor's aircraft nose 2 promptly to by a wide margin improvement the effect of noise reduction.

Wherein the cross-section of the first gas channel 14 may be triangular, circular, quadrilateral, pentagonal, etc. The present disclosure is not so limited.

It should be noted that the air outlet 140 and the air inlet 141 in the present disclosure may be notches of the second case 11, or may be disposed on the second case 11 in a pipeline manner, that is, the air outlet 140 and the air inlet 141 may have a certain length. The present disclosure is not so limited.

With continued reference to fig. 3, the second casing 11 and the third casing 15 are disposed at opposite sides of the first casing 10, respectively. The direction of the arrow is the transfer direction of the fresh air. Specifically, the fresh air enters the internal channel of the third box 15 from the fresh air inlet of the third box 15 along the horizontal leftward direction, then the fresh air enters the accommodating cavity 13 of the first box 10 along the internal channel of the third box 15 in the vertical upward direction, then the fresh air moves along the accommodating cavity 13 of the first box 10 in the horizontal leftward direction, and passes through the air inlet 141 along the vertical downward direction to enter the first air channel 14. The fresh air then moves in the horizontal rightward direction along the first gas channel 14 and passes through the air outlet 140 in the vertical downward direction to enter the air inlet pipe 3 and finally enters the head 2 of the screw air compressor.

In some embodiments, the gas flow direction of the first gas channel 14 forms an angle a with the gas outlet direction of the gas outlet 140. The included angle A is greater than or equal to 45 degrees and less than or equal to 135 degrees. After the noise transmitted from the head 2 of the screw air compressor enters the first air passage 14 through the air outlet 140, the noise is transmitted to the top of the inner wall of the second casing 11 in advance and is reflected. Because the included angle A is greater than or equal to 45 degrees and less than or equal to 135 degrees, most of noise enters the machine head 2 of the screw air compressor through the air outlet 140 after being reflected, and the purpose of reducing the noise transmitted by the machine head 2 of the screw air compressor is achieved.

With continued reference to fig. 3, the gas flowing direction in the first gas channel 14 is horizontal to the right, and the gas outlet direction of the gas outlet 140 is vertical to the lower, that is, the included angle a formed by the gas flowing direction of the first gas channel 14 and the gas outlet direction of the gas outlet 140 is 90 °. It is expected that the transmission direction of the noise transmitted from the machine head 2 of the screw air compressor is opposite to the air flowing direction, that is, the noise transmitted from the machine head 2 of the screw air compressor enters the first air channel 14 from the air outlet 140 in the vertical upward direction, and at this time, the noise is transmitted to the top of the inner side wall of the second box 11 in advance and is reflected. Because contained angle A is 90 for vertical reflection can take place for the most noise, and then gets into screw compressor's aircraft nose 2 through gas outlet 140 again, thereby reaches the purpose of the noise that the aircraft nose 2 of cutting down screw compressor spread.

In some embodiments, the gas flow direction of the first gas channel 14 forms an angle B with the gas intake direction of the gas inlet 141. The included angle B is greater than or equal to 45 ° and less than or equal to 135 °. The noise transmitted in the direction opposite to the gas flowing direction of the first gas passage 14 is transmitted to the side of the inner wall of the second housing 11 in advance and reflected. Since the included angle B is greater than or equal to 45 ° and less than or equal to 135 °, most of the noise will be transmitted to the air outlet 140 in the same direction as the air flowing direction of the first air passage 14, and the remaining small noise will be transmitted to the accommodating cavity 13 through the air inlet 141 after being reflected, so as to achieve the purpose of further reducing the noise transmitted from the head 2 of the screw air compressor.

With continued reference to fig. 3, the gas flowing direction in the first gas passage 14 is horizontal to the right, and the gas inlet direction of the gas inlet 141 is vertical to the bottom, i.e. the included angle a formed by the gas flowing direction of the first gas passage 14 and the gas inlet direction of the gas inlet 141 is 90 °. It is expected that the noise in the first gas passage 14, which is transmitted in the direction opposite to the gas flowing direction, i.e., the noise transmitted in the direction opposite to the gas flowing direction of the first gas passage 14, is transmitted to the side of the inner wall of the second casing 11 in advance and reflected. Due to the included angle B being 90 °, most of the noise will be transmitted to the air outlet 140 along the same direction as the air flowing direction of the first air channel 14, and the remaining minimal noise will be transmitted to the accommodating cavity 13 through the air inlet 141 after being reflected, so as to achieve the purpose of further reducing the noise transmitted from the head 2 of the screw air compressor.

In some embodiments, along the outlet direction of the outlet port 140, the projection of the outlet port 140 on the first plane does not overlap with the projection of the inlet port 141 on the first plane. Wherein the first plane is perpendicular to the air outlet direction of the air outlet 140. When the noise of the compressor head 2 is transmitted from the air inlet pipe 3 to the first air channel 14 through the air outlet 140, if the air outlet 140 and the air inlet 141 of the first air channel 14 are not separated, at least part of the noise coming from the air outlet 140 can be directly transmitted into the accommodating cavity 13 of the air filter box 1 through the air inlet 141, and the effect of reducing the noise transmitted by the compressor head 2 of the screw air compressor is further influenced. When the air outlet 140 and the air inlet 141 of the first air passage 14 are separated, the noise coming from the air outlet 140 is inevitably reflected by the passage wall of the first air passage 14, i.e., the inner wall of the second casing 11, back to the air inlet tube 3. Thereby achieving the purpose of reducing the noise of the machine head 2 of the compressor.

In some embodiments, the air intake device further comprises a silencer 4. The muffler 4 is at least partially located in the accommodating chamber 13 and at the inlet 141. Specifically, the air intake device further comprises an air discharge channel, one end of the air discharge channel is connected to the accommodating cavity 13, and the silencer 4 is at least partially arranged in the air discharge channel. The reason for this is that when the machine head 2 of the screw air compressor is being unloaded, a large squeaking sound is likely to be generated, and the squeaking sound generated when the machine head 2 of the screw air compressor is being unloaded can be effectively prevented by providing the silencer 4. Meanwhile, the silencer 4 is located at the air inlet 141 of the first air passage 14, to reduce noise generated when the head 2 of the screw air compressor is operated to some extent.

In some embodiments, as shown in FIG. 3, the air intake device further includes a baffle 17 disposed in the first gas channel 14. The baffle 17 forms an angle C with the gas flow direction of the first gas channel 14. The angle C is greater than or equal to 45 degrees and less than or equal to 135 degrees. The arrangement is such that the baffle 17 can further reduce the noise of the compressor head 2.

The utility model also provides a screw compressor, including aircraft nose 2 and as above air inlet unit. The machine head 2 of the screw air compressor comprises an air inlet communicated with the air inlet pipe 3. The axial line of the air inlet and the axial line of the air outlet 140 are coaxially distributed. Wherein the inlet pipe 3 comprises a linear duct.

The air intake of current aircraft nose 2 often is located the side, and intake pipe 3 often adopts the hose moreover, and this will lead to intake pipe 3 big and long, and difficult installation and installation back screw compressor complete machine's aesthetic property is not enough. Simultaneously, because the pipeline of intake pipe 3 is long, can make the pressure loss of new trend in intake pipe 3 great, also can lead to the risk increase of remaining dust in the intake pipe 3 moreover. In the present disclosure, the second box 11 is provided, and the axial line of the air outlet 140 on the second box 11 is coaxial with the axial line of the air inlet. Like this, second box 11 can effectively prevent the low frequency noise when aircraft nose 2 moves, can also adjust the position of gas outlet 140 simultaneously for gas outlet 140 aims at the air intake, thereby the effectual length that reduces intake pipe 3, and then reduces the pressure loss of new trend in intake pipe 3, and avoids remaining the dust in intake pipe 3. In addition, due to the reasonable design of the air inlet and the air outlet 140, the air inlet pipe 3 can be directly aligned with the machine head 2, and the whole appearance is beautiful.

Simultaneously, intake pipe 3 in this disclosure adopts the rubber tube, and the upper and lower both ends of intake pipe 3 pass through the clamp and can install respectively again on second box 11 and aircraft nose 2, easy to assemble promptly. Simultaneously, when needing to maintain or change intake pipe 3, loosen the clamp and can dismantle intake pipe 3, convenient maintenance promptly.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. An air intake device is characterized by being applied to a screw air compressor; the air inlet device comprises an air filter box (1) and an air inlet pipe (3) which is connected and arranged between a machine head (2) of the screw air compressor and the air filter box (1); the air filtering box (1) comprises a first box body (10), a second box body (11) and a filter element (12); the first box (10) comprises a housing chamber (13) for housing the filter cartridge (12); the second box body (11) is arranged on one side of the first box body (10) and is fixedly connected with the air inlet pipe (3), so that a buffer space is formed between the air inlet pipe (3) and the accommodating cavity (13).

2. An air inlet arrangement according to claim 1, characterized in that the second box (11) comprises a first air channel (14); the first gas channel (14) comprises a gas outlet (140) and a gas inlet (141); the gas channel is communicated with the accommodating cavity (13) through the gas inlet (141); the gas channel is communicated with a gas channel in the gas inlet pipe (3) through the gas outlet (140).

3. The air intake device according to claim 2, wherein the gas flow direction of the first gas channel (14) forms an angle a with the gas outlet direction of the gas outlet (140); the included angle A is greater than or equal to 45 degrees and less than or equal to 135 degrees.

4. The air intake device according to claim 2, characterized in that the gas flow direction of the first gas channel (14) forms an angle B with the air intake direction of the air intake (141); the included angle B is greater than or equal to 45 ° and less than or equal to 135 °.

5. An air inlet arrangement according to claim 2, characterized in that, in the outlet direction of the outlet opening (140), the projection of the outlet opening (140) onto a first plane does not overlap the projection of the inlet opening (141) onto the first plane;

wherein the first plane is perpendicular to the air outlet direction of the air outlet (140).

6. An air intake device according to claim 2, further comprising a silencer (4); the muffler (4) is at least partially located in the accommodation chamber (13) and at the air inlet (141).

7. An air inlet arrangement according to claim 2, characterized in that the air inlet arrangement further comprises a baffle (17) arranged in the first gas channel (14).

8. Screw air compressor, characterized in that it comprises a machine head (2) and an air intake device according to any one of claims 1-7; the machine head (2) of the screw air compressor comprises an air inlet communicated with the air inlet pipe (3); the second case (11) includes an air outlet (140); the axial lead of the air inlet and the axial lead of the air outlet (140) are coaxially distributed.

9. Screw air compressor according to claim 8, characterised in that the inlet pipe (3) comprises a straight pipe.

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