CN213298285U

CN213298285U - Main unit air inlet filtering silencer for screw air compressor

Info

Publication number: CN213298285U
Application number: CN202022143324.4U
Authority: CN
Inventors: 谭强; 黄�俊
Original assignee: Zhejiang Zhigao Power Technology Co ltd
Current assignee: Zhejiang Zhigao Power Technology Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-05-28
Anticipated expiration: 2030-09-25

Abstract

The utility model provides a screw rod air compressor is with host computer air intake filtration silencing device, it has solved and has filtered silencing device and can't be applicable to large-traffic air compressor machine scheduling problem, it includes main air inlet duct, a plurality of relatively independent air filter installation cavity are installed to main air inlet duct rear side, main air inlet duct and air filter installation cavity upside are installed a plurality of and air filter installation cavity one-to-one's gas collection silencing cavity, be provided with air filter core between air filter installation cavity and the gas collection silencing cavity, gas collection silencing cavity communicates mutually, main air inlet duct and air filter installation cavity communicate mutually and be provided with the sliding door mechanism between. The utility model has the advantages of simple structure, good noise reduction effect and the like.

Description

Main unit air inlet filtering silencer for screw air compressor

Technical Field

The utility model belongs to the technical field of compressor spare part, concretely relates to screw rod is host computer filtration silencing device that admits air for air compressor.

Background

The screw air compressor realizes the compression process of gas by mutual meshing of a pair of precisely manufactured rotors, and the requirement on the cleanliness of the sucked gas is strict, so that an air filtering device is one of essential parts. Since the air filter device always generates resistance to the compressor intake airflow, the energy efficiency of the machine is directly affected, and the effect of unreasonable or improper configuration is particularly obvious. And particularly after the new energy efficiency standard of GB19153-2019 is out of service, the energy efficiency requirement of the compressor is stricter. Evaluating and analyzing the air intake process of the compressor host, namely: air under the environmental condition passes through the channel before filtering, reaches the filter core, passes through the channel after filtering again, and then enters the whole process of host computer, and the spare part of research and development high-quality structure can further improve the efficiency.

The noise generated by the main frame of the screw air compressor during the compression process, especially the noise transmitted from the inlet of the main frame, is the main noise source of the whole screw air compressor. The noise can be transmitted out along the reverse propagation of the air inlet channel of the main machine of the screw air compressor, namely: from the inlet of the host to the pre-filter channel, to the filter cartridge, through the post-filter channel, and into the environment. In order to reduce noise emission of the conventional screw air compressor product, the used integrated air inlet filter has small flow area and large resistance; some large-flow machines use two or more small-flow filters in parallel combination for use, so that the resistance cannot be reduced, the cost is increased, and the market competitiveness is weak; in addition, in order to overcome the difficulty of large resistance, the empty filter element is placed in a simple shell, under the condition, the noise transmitted from the air inlet of the main machine is transmitted into the environment through the air flow pipeline, and the noise reduction capability is very weak.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent literature discloses a noise reduction filter device [201621160496.X ] for an air compressor, which comprises an air inlet end of the air compressor, a sound insulation flip cover, an outer shell, and a sound insulation filter layer, wherein the outer surface of the outer shell is provided with air inlets arranged at equal intervals, the outer shell is mounted on the air inlet end of the air compressor in a sealing manner, the sound insulation flip cover is hinged to the outer shell in a sealing manner, a bottom plate of the outer shell is provided with a plurality of mounting positions, the sound insulation filter layer is cylindrical, the plurality of sound insulation filter layers are detachably inserted in the mounting positions, and an air layer is formed between two adjacent.

Above-mentioned scheme has solved the great problem of air compressor machine noise at a certain extent, but this scheme still has a lot of not enough, for example can't be applicable to big flow air compressor machine scheduling problem.

Disclosure of Invention

The utility model aims at the above problem, provide a reasonable in design, be applicable to the screw air compressor's of large-traffic air compressor machine for host computer intake filter silencing device.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this screw rod air compressor is with host computer air inlet filtration silencing device, including main air inlet duct, a plurality of relatively independent air filter installation cavity are installed to main air inlet duct rear side, main air inlet duct and air filter installation cavity upside install a plurality of and air filter installation cavity one-to-one's gas collection silencing cavity, be provided with the air filter core between air filter installation cavity and the gas collection silencing cavity, gas collection silencing cavity communicates each other, main air inlet duct and air filter installation cavity communicate each other and be provided with the sliding door mechanism between. Triple noise reduction of the air compressor is realized by the main air inlet duct, the air filter installation cavities and the air-collecting noise-reducing cavities, wherein the air flow of the main air inlet duct and the air filter installation cavities can be adjusted by the sliding door mechanism, and the filtering noise reduction requirements of the large-flow air compressor can be met by combining the air filter installation cavities and the air-collecting noise-reducing cavities.

In the above-mentioned host air inlet filtering silencer for the screw air compressor, the sliding door mechanism includes a short sliding door guide rail fixed on the air filter installation cavity and a long sliding door guide rail fixed on the main air inlet duct, and the short sliding door guide rail and the long sliding door guide rail are parallel to each other and respectively sandwich the sliding door therebetween. The sliding door slides relative to the short sliding door guide rail and the long sliding door guide rail, so that the hollow filter element in the hollow filter installation cavity is convenient to replace.

In the main engine air inlet filtering and silencing device for the screw air compressor, the hand wheel bolt is installed on one side of the sliding door, and the end head of the hand wheel bolt is opposite to the air filter installation cavity. When the sliding door slides to a corresponding position, the position of the sliding door can be fixed by screwing the hand wheel bolt. And loosening the hand wheel bolt, and sliding rightwards to expose all the empty filter elements.

At foretell screw rod air compressor is with host computer filtration silencing device that admits air, main air inlet duct includes the backplate with empty mounting cavity one side joint that strains, and the backplate lower extreme is connected with the bottom plate amalgamation, and the backplate upper end is amalgamated with the medium plate, and the end of main air inlet duct is sealed by screw rod air compressor's stand, and main air inlet duct the place ahead is covered by screw rod air compressor's door plant, and the door plant is close to one side of stand and opens there is the air intake, and air intake border department is provided with the parting bead, and the air intake is sealed by. The main air inlet duct is attached to the screw air compressor, so that the number of sealing plates is reduced, and the air inlet duct can be mounted on various screw air compressors.

At foretell screw rod air compressor is with host computer filtration silencing device that admits air, filtering mechanism is including fixing sponge support frame and the coarse filtration sponge in the air inlet. The sponge support frame and the coarse filtering sponge can filter out large-particle impurities in the air, such as dust, fibers or mosquitoes.

In the main engine air inlet filtering and silencing device for the screw air compressor, the air collecting and silencing cavities are separated by the partition plate and are communicated with each other through the middle cylinder, the middle cylinder is attached to one side, and one of the air collecting and silencing cavities is communicated with the outside through the air outlet cylinder. The gas-collecting silencing cavity is relatively independent, and only the middle cylinder and the gas-outlet cylinder are reserved for air circulation, so that the sound-insulating effect is ensured.

In the main machine air inlet filtering and silencing device for the screw air compressor, the middle cylinder and the air outlet cylinder are arranged in a staggered manner. The middle cylinder and the air outlet cylinder which are arranged in a staggered mode prolong the length of an air flow channel, and the noise is fully absorbed by the air collection and sound attenuation cavity.

In the main engine air inlet filtering and silencing device for the screw air compressor, the periphery of the air collection silencing cavity is sealed by the air collection box surrounding plate, and the upper end of the air collection silencing cavity is sealed by the air collection box cover plate. The gas collection and sound attenuation cavities can be assembled in a modularized mode and assembled in a combined mode according to actual needs.

At foretell screw rod air compressor for host computer filter silencing device that admits air, empty filter core is cylindricly, and gas collection silencing cavity below is provided with the holding ring with empty filter core joint, and the vertical fixing bolt of installing in empty installation cavity bottom is strained to the sky, and the fixing bolt top props with empty filter core lower extreme relatively fixed, and threaded connection has set nut and lock nut on the fixing bolt, and set nut and the laminating of empty installation cavity bottom below of straining, lock nut and the laminating of empty installation cavity bottom top of straining. The air filter element is asymmetrically arranged in the air filter installation cavity, and the sliding door mechanism controls the air inlet area of the air filter installation cavity, so that the air filter installation cavity becomes a functional silencing cavity. When air enters the air filter installation cavity, the air flows along the tangential direction of the side surface of the hollow filter element.

In the main engine air inlet filtering and silencing device for the screw air compressor, the sound-absorbing material plate and the porous steel plate are arranged around the air collection silencing cavity. The sound-absorbing material plate and the porous steel plate are matched with each other to absorb noise transmitted by the air filter mounting cavity.

Compared with the prior art, the utility model has the advantages of: the sliding door mechanism can adjust the air flow between the main air inlet duct and the air filter installation cavities, and can meet the filtering and noise reduction requirements of a large-flow air compressor by matching with a plurality of air filter installation cavities and air collecting and noise reduction cavities; triple noise reduction is realized by the air filter installation cavity, the air collection and noise reduction cavity and the main air inlet duct, and a better noise reduction effect is achieved; the flow rate of the section of the hollow filter element is easy to control, the resistance is small, and the energy efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view of the structure at A in FIG. 1;

FIG. 3 is a cross-sectional view of the structure at B in FIG. 1;

FIG. 4 is a cross-sectional view of the structure of FIG. 1 at C;

FIG. 5 is a cross-sectional view of the structure of FIG. 4 at D;

in the figure, a main air inlet duct 1, a back plate 11, a bottom plate 12, a middle plate 13, an upright post 14, a door panel 15, an air inlet 16, a parting strip 17, an air filter installation cavity 2, a positioning ring 21, a fixing bolt 22, a positioning nut 23, a locking nut 24, an air collection muffling cavity 3, a partition plate 31, a middle cylinder 32, an air outlet cylinder 33, an air collection box coaming 34, an air collection box cover plate 35, a sound absorbing material plate 36, a porous steel plate 37, an air filter element 4, a sliding door mechanism 5, a sliding door short guide rail 51, a sliding door long guide rail 52, a sliding door 53, a hand wheel bolt 54 and a filter mechanism 6.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-5, the host air inlet filtering silencer for the screw air compressor comprises a main air inlet duct 1, a plurality of relatively independent air filter installation cavities 2 are installed on the rear side of the main air inlet duct 1, a plurality of air collection silencing cavities 3 corresponding to the air filter installation cavities 2 one by one are installed on the upper sides of the main air inlet duct 1 and the air filter installation cavities 2, air filter elements 4 are arranged between the air filter installation cavities 2 and the air collection silencing cavities 3, the air collection silencing cavities 3 are communicated with each other, and a sliding door mechanism 5 is arranged between the main air inlet duct 1 and the air filter installation cavities 2. Air enters from the main air inlet duct 1 and sequentially passes through the air filter installation cavity 2, the air filter element 4 and the air-collecting and sound-attenuating cavity 3, wherein the size of a communication port is adjusted between the main air inlet duct 1 and the air filter installation cavity 2 through the sliding door mechanism 5 respectively, so that the air flow in the air filter installation cavity 2 is controlled. When the screw air compressor has larger flow, the air filter installation cavities 2 and the air collecting and silencing cavity 3 can be connected and integrated with the main air inlet duct 1 in parallel, so that larger air flow is obtained, and normal filtering and silencing is not influenced.

Specifically, the sliding door mechanism 5 includes a short sliding door rail 51 fixed to the air filter installation chamber 2 and a long sliding door rail 52 fixed to the main air intake duct 1, and the short sliding door rail 51 and the long sliding door rail 52 are parallel to each other with a sliding door 53 interposed therebetween. The sliding door 53 in the sliding door mechanism 5 slides left and right to open and close to control the air inlet area, and when the sliding door 53 slides to the rightmost position, the channel between the sliding door 53 and the sliding door is completely opened, so that the empty filter element 4 is convenient to replace and maintain.

Deeply, a hand wheel bolt 54 is arranged on one side of the sliding door 53, and the end head of the hand wheel bolt 54 is opposite to the air filter installation cavity 2. After being screwed tightly, the hand wheel bolt 54 is pressed against the air filter installation cavity 2, so that the relative position of the sliding door 53 is fixed.

Further, the main air inlet duct 1 comprises a back plate 11 connected with one side of the air filter installation cavity 2, the lower end of the back plate 11 is connected with a bottom plate 12 in a splicing mode, the upper end of the back plate 11 is connected with a middle plate 13 in a splicing mode, the end of the main air inlet duct 1 is sealed by a stand column 14 of the screw air compressor, the front of the main air inlet duct 1 is covered by a door plate 15 of the screw air compressor, one side, close to the stand column 14, of the door plate 15 is provided with an air inlet 16, a partition strip 17 is arranged at the edge of the air inlet 16, and the air inlet. The inner channel of the main air inlet duct 1 is used as a silencing cavity, the air filter installation cavity 2 is used as a silencing cavity, and triple silencing is realized by matching with the air collection silencing cavity 3.

Further, the filter mechanism 6 includes a sponge holder fixed in the air inlet 16 and a coarse filter sponge. The filtering mechanism 6 is used for preliminarily filtering the air, and coarse filtering sponge is adopted, so that the air resistance is small.

Besides, the gas-collecting silencing cavities 3 are separated by the partition plates 31 and are communicated with each other through the middle cylinders 32, the middle cylinders 32 are arranged in a single-side fit manner, and one of the gas-collecting silencing cavities 3 is communicated with the outside through the gas outlet cylinder 33. The air outlet cylinder 33 and the middle cylinder 32 are arranged in a single-side fit manner, so that air flow is facilitated, and pressure loss is small; and for the noise transmitted from the main port, the noise is effectively prevented from being transmitted from the first cavity to the second cavity.

Meanwhile, the intermediate cylinder 32 and the gas discharge cylinder 33 are disposed to be offset from each other. The air passes through the middle cylinder 32 and the air outlet cylinder 33 in sequence, and the flowing distance is prolonged by relative dislocation, so that the air-collecting and silencing cavity 3 can fully absorb the transmitted noise.

Visibly, the periphery of the gas collection and sound attenuation cavity 3 is sealed by a gas collection box coaming 34, and the upper end of the gas collection and sound attenuation cavity 3 is sealed by a gas collection box cover plate 35.

Obviously, empty filter core 4 is cylindricly, and the gas collection noise damping chamber 3 below is provided with the holding ring 21 with empty filter core 4 joint, and the vertical fixing bolt 22 of installing 2 bottoms in empty filter installation cavity, fixing bolt 22 top and the relative fixed support of empty filter core 4 lower extreme, threaded connection has set nut 23 and lock nut 24 on fixing bolt 2, and set nut 23 laminates with 2 bottoms below in empty filter installation cavity, and lock nut 24 laminates with 2 bottoms tops in empty filter installation cavity. The empty filter element 4 is asymmetrically arranged in the empty filter installation cavity 2, so that the flow velocity of air on each section of the empty filter element 4 is basically equal.

Preferably, the gas-collecting sound-deadening chamber 3 is provided with sound-absorbing material plates 36 and porous steel plates 37 at the periphery. The sound-absorbing material plate 36 and the porous steel plate 37 are distributed inside the air-collecting and sound-deadening cavity 3 and absorb most of the noise transmitted by the main machine.

In summary, the principle of the present embodiment is: the multi-group air filter installation cavity 2, the air collection silencing cavity 3 and the main air inlet duct 1 are communicated, wherein the air filter installation cavity 2, the air collection silencing cavity 3 and the main air inlet duct 1 are used for triple noise reduction of noise transmitted by a main engine for the screw air compressor, and the air flow rate inside the air filter installation cavity is controlled by the sliding door mechanism 5 between the main air inlet duct 1 and the air filter installation cavity 2, so that the air filter is suitable for a large-flow screw air compressor, the pressure loss is small, and the normal filtering noise reduction is not influenced.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the main air inlet duct 1, the back plate 11, the bottom plate 12, the middle plate 13, the upright posts 14, the door panel 15, the air inlet 16, the partition strip 17, the air filter installation cavity 2, the positioning ring 21, the fixing bolt 22, the positioning nut 23, the locking nut 24, the air collection muffling cavity 3, the partition plate 31, the middle cylinder 32, the air outlet cylinder 33, the air collection box enclosing plate 34, the air collection box covering plate 35, the sound-absorbing material plate 36, the porous steel plate 37, the air filter element 4, the sliding door mechanism 5, the sliding door short guide rail 51, the sliding door long guide rail 52, the sliding door 53, the hand wheel bolt 54, the filter mechanism 6, and the like are used more frequently, the possibility of using other terms is. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a screw rod air compressor is with host computer air inlet filtration silencing device, its characterized in that, includes main air inlet duct (1), main air inlet duct (1) rear side install a plurality of relatively independent empty installation cavity (2) of straining, main air inlet duct (1) and empty installation cavity (2) upside install a plurality of and empty gas collection silencing cavity (3) that strain installation cavity (2) one-to-one, empty installation cavity (2) and gas collection silencing cavity (3) between be provided with air filter (4), gas collection silencing cavity (3) communicate each other, main air inlet duct (1) and empty installation cavity (2) communicate each other and between be provided with sliding door mechanism (5).

2. The main unit air inlet filtering and silencing device for the screw air compressor is characterized in that the sliding door mechanism (5) comprises a sliding door short guide rail (51) fixed on the air filter installation cavity (2) and a sliding door long guide rail (52) fixed on the main air inlet duct (1), wherein the sliding door short guide rail (51) and the sliding door long guide rail (52) are parallel to each other and respectively clamp a sliding door (53) between the sliding door short guide rail (51) and the sliding door long guide rail (52).

3. The main unit air inlet filtering and silencing device for the screw air compressor is characterized in that a hand wheel bolt (54) is installed on one side of the sliding door (53), and the end head of the hand wheel bolt (54) is opposite to the air filter installation cavity (2).

4. The main air inlet filtering and silencing device for the screw air compressor is characterized in that the main air inlet duct (1) comprises a back plate (11) connected with one side of the air filter installation cavity (2), the lower end of the back plate (11) is connected with a bottom plate (12) in a splicing mode, the upper end of the back plate (11) is connected with a middle plate (13) in a splicing mode, the end of the main air inlet duct (1) is closed by a stand column (14) of the screw air compressor, the front of the main air inlet duct (1) is covered by a door plate (15) of the screw air compressor, one side, close to the stand column (14), of the door plate (15) is provided with an air inlet (16), a partition strip (17) is arranged at the edge of the air inlet (16), and the air inlet (16) is closed by a filtering mechanism (6).

5. The main unit air inlet filtering and silencing device for the screw air compressor as recited in claim 4, wherein the filtering mechanism (6) comprises a sponge support frame fixed in the air inlet (16) and a coarse filtering sponge.

6. The main unit air inlet filtering and silencing device for the screw air compressor as recited in claim 1, wherein the air collecting and silencing chambers (3) are separated by a partition plate (31) and are communicated with each other through an intermediate cylinder (32), the intermediate cylinder (32) is attached to one side, and one air collecting and silencing chamber (3) is communicated with the outside through an air outlet cylinder (33).

7. The main unit inlet air filtering and silencing device for the screw air compressor as recited in claim 6, wherein the intermediate cylinder (32) and the outlet cylinder (33) are disposed in a staggered manner.

8. The main engine air inlet filtering and silencing device for the screw air compressor as recited in claim 1, wherein the gas collection and silencing cavity (3) is enclosed by a gas collection box surrounding plate (34) at the periphery, and the upper end of the gas collection and silencing cavity (3) is enclosed by a gas collection box cover plate (35).

9. The main engine air inlet filtering and silencing device for the screw air compressor as claimed in claim 1, wherein the air filter element (4) is cylindrical, a positioning ring (21) connected with the air filter element (4) in a clamping manner is arranged below the air collection silencing cavity (3), a fixing bolt (22) is vertically arranged at the bottom of the air filter installation cavity (2), the top end of the fixing bolt (22) is fixedly supported relative to the lower end of the air filter element (4), the fixing bolt (22) is connected with a positioning nut (23) and a locking nut (24) in a threaded manner, the positioning nut (23) is attached to the bottom of the air filter installation cavity (2) at the lower part, and the locking nut (24) is attached to the bottom of the air filter installation cavity (2) at the upper part.

10. The main unit air inlet filtering and silencing device for the screw air compressor as claimed in claim 1, wherein the air collecting and silencing cavity (3) is provided with sound absorbing material plates (36) and porous steel plates (37) at the periphery.