CN217270708U

CN217270708U - Silencer structure of air compressor

Info

Publication number: CN217270708U
Application number: CN202220749332.XU
Authority: CN
Inventors: 林于法; 周坤龙
Original assignee: Zhejiang Lawston Technology Co ltd
Current assignee: Zhejiang Lawston Technology Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-08-23
Anticipated expiration: 2032-03-31

Abstract

The utility model provides a muffler structure of air compressor machine belongs to air compressor machine technical field. The silencer structure of the air compressor solves the technical problems that the silencer structure of the existing air compressor is large in vibration amplitude, easy to loose in connection, small in air inlet and outlet sectional area, poor in silencing effect and the like. The middle part of amortization casing is equipped with the amortization chamber among this air compressor machine's the muffler structure, and both ends are equipped with the exhaust chamber, and the amortization intracavity is installed the amortization cotton, and amortization casing left side and right side all are equipped with the gas vent with the exhaust chamber intercommunication, and every exhaust chamber all communicates through two at least connecting holes with the amortization chamber, and the bottom of amortization casing is equipped with air inlet grille or is equipped with a plurality of inlet ports. The bottom of the sound attenuation cavity of the utility model is provided with the air inlet grille or the air inlet hole, so that the air inlet space is larger, the gas flow velocity is reduced, the sound attenuation effect is favorably improved, and the service life is prolonged; the both ends of amortization casing respectively with cylinder cap fixed connection, avoid the wherein one end of amortization casing unsettled, be favorable to improving noise cancelling effect and life.

Description

Silencer structure of air compressor

Technical Field

The utility model belongs to the technical field of the air compressor machine, refer in particular to a muffler structure of air compressor machine.

Background

The air compressor is air source equipment for compressing air. When the air compressor works, the air cylinder periodically sucks external air into the air cylinder, and then the air in the air cylinder is compressed through the piston to provide high-pressure air to the outside. Because the cylinder during operation frequency of breathing in is very fast, can produce great noise in air inlet department during breathing in, so current air compressor machine all can install the muffler in air inlet department to reduce the noise that the air compressor machine produced when breathing in.

At present, the air compressor machine of current double-cylinder, its muffler generally have two and two silencers are all installed between two cylinder covers, like application number is 201921599373.X utility model discloses an air compressor machine with muffler, the muffler is installed and is close to one side of motor at the cylinder cover, same two muffler dislocation sets on the cylinder cover to avoid the muffler too protrusion box side and outer terminal surface, prevent to remove and take place to bruise or interfere with other objects in the use muffler.

Further, above-mentioned muffler is generally fixed through intake pipe and cylinder cap threaded connection, concrete structure is shown as utility model patent publication's that application number is 202022654832.9 utility model, including procapsid and back casing, procapsid and back casing threaded connection, procapsid one end matches the fixed air compressor machine blow vent that is equipped with, the air compressor machine blow vent matches and is equipped with the screw thread that matches with air compressor machine ventilation interface, the fixed hexagon nut that is equipped with of air compressor machine blow vent one end, the procapsid inboard is equipped with the filtration breather pipe, filtration breather pipe and procapsid threaded connection, it matches with air compressor machine blow vent shape, the inside net section of thick bamboo that is equipped with of procapsid, the net section of thick bamboo matches with the procapsid shape, the match is equipped with the amortization subassembly in the net section of thick bamboo, back casing side thread tightening intercommunication has external blow vent, external vent internal fixation matches and is equipped with first filter screen.

Although the silencer of the air compressor can play a certain silencing role, the following defects still exist:

1. one end of the silencer is fixedly connected with the cylinder cover, the other end of the silencer is suspended, and the air compressor inevitably generates vibration when working normally, the suspended silencer is easy to vibrate along with the vibration of the air compressor, especially the suspended end, the vibration amplitude of the suspended silencer is larger than that of the air compressor, and larger amplitude easily causes the silencer to be loose or parts in the silencer to be loose or even damaged, so that the silencing effect of the silencer is poor, and the service life of the silencer is shortened;

2. the air inlet (external vent hole) and the air outlet (air vent of the air compressor) of the silencer are round holes with smaller sizes, and the air inlet and the air outlet with smaller sizes can cause the gas to flow through the air inlet and the air outlet at an excessively high flow speed, so that noise is easily generated, and the silencing effect is influenced; the smaller size of the air inlet and outlet also results in a reduction in the amount of air sucked per unit time, resulting in a reduction in the efficiency with which the air compressor compresses the air.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to provide a silencer structure of air compressor machine that noise cancelling effect is better, life is longer.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a muffler structure of air compressor machine which characterized in that: including the amortization casing, the middle part of amortization casing is equipped with the amortization chamber, both ends are equipped with the exhaust chamber, install the amortization cotton in the amortization chamber, all be equipped with on the lower terminal surface on amortization casing left side and right side with the inlet port complex gas vent of cylinder cap, gas vent and exhaust chamber intercommunication, every exhaust chamber all communicates through two at least connecting holes with the amortization chamber, the bottom of amortization casing is equipped with air inlet grille or is equipped with a plurality of inlet ports.

The air inlet hole of the cylinder cover matched with the silencer structure is arranged on the upper side face of the cylinder cover instead of the side face of the cylinder cover, so that the air inlet hole in the cylinder cover and the exhaust port in the silencing shell can be set to be larger; further, the amortization casing both ends of this muffler structure all are provided with the gas vent to every gas vent all is connected with the inlet port of the cylinder cap that corresponds, consequently, the both ends of this amortization casing respectively with the cylinder cap fixed connection that corresponds, the middle part of amortization casing is unsettled, the unsettled condition of wherein one end of amortization casing can be avoided in this design to appear, makes the whole amplitude of muffler the same, is favorable to further improving the noise cancelling effect and the life of this muffler structure.

In the above silencer structure of the air compressor, a partition plate is arranged in the middle of the silencing cavity, the silencing cavity is divided into a left silencing chamber and a right silencing chamber by the partition plate, silencing cotton is arranged in the left silencing chamber and the right silencing chamber, and a plurality of strip-shaped air inlets are arranged at the bottoms of the left silencing chamber and the right silencing chamber.

The design of the partition plate divides the silencing cavity into a left silencing chamber and a right silencing chamber which are independent, so that the silencing chambers corresponding to the two cylinder covers are not interfered with each other, and the stability of the silencer structure during working is improved; the air inlet area of the left silencing chamber and the air inlet area of the right silencing chamber can be increased by the design of the strip-shaped air inlet holes, and the silencing cotton in the left silencing chamber and the right silencing chamber can be well supported.

In foretell muffler structure of air compressor machine, the amortization casing includes casing and last lid down, casing and last lid can be dismantled and connect down, the outside of going up the lid is along bending down and forming the surrounding edge, the lower extreme of surrounding edge supports with the outside of casing along leaning on down, the amortization chamber surrounds with last lid by casing down and forms.

The design of above-mentioned casing and last lid under the detachable is convenient for the assembly and the maintenance of this muffler structure.

In the above-mentioned silencer structure of air compressor machine, the inner of the outside border of lower casing is equipped with the protruding edge that makes progress, the lower extreme of surrounding edge is equipped with the step with protruding edge complex.

The design of the step convex edge and the step can ensure that the connection between the upper cover body and the lower shell is more compact and firm, and the assembly is more convenient.

In the above silencer structure of the air compressor, the left side and the right side of the upper part of the lower shell are both provided with lower connecting plates, the exhaust port is arranged at the outer end of the lower connecting plate and penetrates the lower connecting plate up and down, and the inner end of the lower connecting plate is provided with a lower mounting hole; the left and right sides of going up the lid all be equipped with lower connecting plate complex upper junction plate, the inner of upper junction plate is equipped with convex spliced pole downwards, the spliced pole can support with the up end of lower connecting plate and lean on, be equipped with the last mounting hole that runs through the spliced pole from top to bottom on the spliced pole, go up the mounting hole and set up with lower mounting hole cooperation.

This muffler structure is fixed through last mounting hole and the screw hole cooperation on mounting hole and the cylinder cap down, and the design of going up the connecting post on the lid can avoid the air of exhaust intracavity to discharge through last mounting hole or mounting hole down, is favorable to improving the leakproofness of this muffler structural connection, avoids the air current to flow through last mounting hole or mounting hole down and the noise generation to improve the noise cancelling effect of this muffler structure and the stability of during operation.

In the above-mentioned silencer structure of air compressor machine, the connecting plate of both sides all caves in downwards around the mounting hole down forms the air guide groove.

The design of above-mentioned air guide groove can increase the sectional area when the air flows through both sides around the mounting hole down, is favorable to reducing the velocity of flow when the air flows through here to avoid producing the noise, improve the noise cancelling effect of this muffler structure.

In the above-mentioned silencer structure of air compressor machine, the tank bottom of air guide groove is the inclined plane of downward sloping from outside to inside gradually, the width of air guide groove enlarges from outside to inside gradually.

The structure of above-mentioned air guide groove can make the air flow more in the same direction as smooth when leading the air guide groove, does not have the plane of perpendicular to air flow direction, is favorable to reducing the noise that the air flow produced when leading the air guide groove, improves the noise cancelling effect of this muffler structure.

In foretell silencer structure of air compressor machine, the left and right sides of casing is equipped with the lower baffle that separates amortization chamber and exhaust chamber down, the left and right sides of going up the lid is equipped with the last baffle that separates amortization chamber and exhaust chamber, baffle and last baffle correspond the setting down, go up lid and casing assembly back down, the lower extreme of overhead gage supports with the upper end of baffle down and leans on, the connecting hole is located on the overhead gage or is located down on the baffle or surround by overhead gage and lower baffle and form.

Above-mentioned baffle and last baffle cooperation down can avoid the amortization cotton in left anechoic chamber and the right amortization room to get into the exhaust chamber along with the air current, cause the gas vent to block up, are favorable to improving the noise cancelling effect and the stability of this muffler structure, make the life of this muffler structure longer.

Compared with the prior art, the utility model discloses a technological effect does:

Drawings

Fig. 1 is a schematic view of the installation structure of the present invention.

Fig. 2 is a plan view of the present invention.

Fig. 3 is a cross-sectional view at a-a in fig. 2.

Fig. 4 is a cross-sectional view of the sound-deadening cotton taken at B-B in fig. 2.

Fig. 5 is a schematic structural diagram of the upper cover body of the present invention.

Fig. 6 is a schematic structural diagram of the lower housing of the present invention.

In the figure, 1, a sound attenuation shell; 11. a sound-deadening chamber; 111. a left anechoic chamber; 112. a right anechoic chamber; 12. an exhaust chamber; 13. silencing cotton; 14. connecting holes; 15. a partition plate; 2. a lower housing; 21. a convex edge; 22. a lower connecting plate; 221. an exhaust port; 222. a lower mounting hole; 23. a gas guide groove; 24. a lower baffle plate; 25. a strip hole; 3. an upper cover body; 31. surrounding edges; 311. a step; 32. an upper connecting plate; 321. connecting columns; 322. an upper mounting hole; 33. an upper baffle plate; 4. the cylinder cover.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

This muffler structure of air compressor machine includes amortization casing 1, the middle part of amortization casing 1 is equipped with amortization chamber 11, both ends are equipped with exhaust chamber 12, install amortization cotton 13 in the amortization chamber 11, all be equipped with on the lower terminal surface on amortization casing 1 left side and right side with cylinder cap 4's inlet port complex gas vent 221, gas vent 221 and exhaust chamber 12 intercommunication, every exhaust chamber 12 all communicates through two at least connecting holes 14 with amortization chamber 11, the bottom of amortization casing 1 is equipped with air-inlet grille or is equipped with a plurality of inlet ports. The air inlet of the cylinder cover 4 adaptive to the silencer structure is arranged on the upper side surface of the cylinder cover 4 instead of the side surface of the cylinder cover 4, so that the air inlet on the cylinder cover 4 and the exhaust port 221 on the silencing shell 1 can be set to be larger, and meanwhile, the silencer structure enables the bottom of the whole silencing cavity 11 to be provided with an air inlet grille or an air inlet, so that the silencing shell 1 has a sufficiently large air inlet space; further, 1 both ends of the amortization casing of this muffler structure all are provided with gas vent 221 to every gas vent 221 all is connected with the inlet port of the cylinder cap 4 that corresponds, consequently, the both ends of this amortization casing 1 respectively with the 4 fixed connection of cylinder cap that correspond, the middle part of amortization casing 1 is unsettled, the unsettled condition of one end wherein of amortization casing 1 can be avoided in this design to appear, make the whole amplitude of muffler the same, be favorable to further improving the noise cancelling effect and the life of this muffler structure.

As shown in fig. 3 and 4, a partition 15 is disposed in the middle of the muffling chamber 11, the partition 15 divides the muffling chamber 11 into a left muffling chamber 111 and a right muffling chamber 112, muffling cotton 13 is disposed in the left muffling chamber 111 and the right muffling chamber 112, and a plurality of strip-shaped air inlets are disposed at the bottoms of the left muffling chamber 111 and the right muffling chamber 112. The design of the partition plate 15 divides the silencing cavity 11 into a left silencing chamber 111 and a right silencing chamber 112 which are independent, so that the silencing chambers corresponding to the two cylinder covers 4 are not interfered with each other, and the stability of the silencer structure during working is improved; the design of the plurality of strip-shaped air inlet holes can not only increase the air inlet area of the left silencing chamber 111 and the right silencing chamber 112, but also play a better supporting role for the silencing cotton 13 in the left silencing chamber 111 and the right silencing chamber 112.

Further, the silencing shell comprises a lower shell 2 and an upper cover body 3, the lower shell 2 and the upper cover body 3 are detachably connected, the outer edge of the upper cover body 3 is bent downwards to form a surrounding edge 31, the lower end of the surrounding edge 31 is abutted against the outer edge of the lower shell 2, and the silencing cavity 11 and the exhaust cavity 12 are formed by surrounding the lower shell 2 and the upper cover body 3; the inner end of the outer edge of the lower shell 2 is provided with a convex edge 21 protruding upwards, and the lower end of the surrounding edge 31 is provided with a step 311 matched with the convex edge 21. The design of the detachable lower shell 2 and the detachable upper cover body 3 is convenient for the assembly and the maintenance of the silencer structure; the design of the ledge 21 of the step 311 and the step 311 can make the connection between the upper cover 3 and the lower cover 2 more tight and firm, and the assembly is more convenient.

As shown in fig. 5 and 6, the lower connecting plates 22 are disposed on both left and right sides of the upper portion of the lower housing 2, the exhaust port 221 is disposed at the outer end of the lower connecting plate 22 and penetrates the lower connecting plate 22 up and down, and the inner end of the lower connecting plate 22 is provided with a lower mounting hole 222; the left side and the right side of the upper cover body 3 are both provided with upper connecting plates 32 matched with the lower connecting plates 22, the inner ends of the upper connecting plates 32 are provided with connecting columns 321 protruding downwards, the connecting columns 321 can abut against the upper end surfaces of the lower connecting plates 22, the connecting columns 321 are provided with upper mounting holes 322 penetrating the connecting columns 321 up and down, and the upper mounting holes 322 are matched with the lower mounting holes 222; the connecting plates at the front and rear sides of the lower mounting hole 222 are both recessed downwards to form an air guide groove 23; the bottom of the air guide groove 23 is an inclined surface which gradually inclines downwards from the outside to the inside, and the width of the air guide groove 23 gradually increases from the outside to the inside. The silencer structure is fixed by matching the upper mounting hole 322 and the lower mounting hole 222 with the threaded hole on the cylinder cover 4, and the design of the upper connecting column 321 of the upper cover body 3 can prevent air in the exhaust cavity 12 from being exhausted through the upper mounting hole 322 or the lower mounting hole 222, so that the sealing property of the structural connection of the silencer is improved, and the noise generated when airflow flows through the upper mounting hole 322 or the lower mounting hole 222 is avoided, thereby improving the silencing effect and the stability during working of the silencer structure; the design of the air guide groove 23 can increase the sectional area of the air flowing through the front side and the rear side of the lower mounting hole 222, which is beneficial to reducing the flow velocity of the air flowing through the air guide groove, thereby avoiding the generation of noise and improving the silencing effect of the silencer structure; above-mentioned air guide groove 23's structure can make air flow more in the same direction as smooth when air guide groove 23, does not have the plane of perpendicular to air flow direction, is favorable to reducing the noise that produces when air flow passes through air guide groove 23, improves the noise cancelling effect of this muffler structure.

Furthermore, the left side and the right side of the lower shell 2 are provided with a lower baffle plate 24 which separates the sound-absorbing cavity 11 from the air exhaust cavity 12, the left side and the right side of the upper cover 3 are provided with an upper baffle plate 33 which separates the sound-absorbing cavity 11 from the air exhaust cavity 12, the lower baffle plate 24 and the upper baffle plate 33 are correspondingly arranged, after the upper cover 3 and the lower shell 2 are assembled, the lower end of the upper baffle plate 33 is abutted against the upper end of the lower baffle plate 24, and the connecting hole 14 is formed in the upper baffle plate 33 or in the lower baffle plate 24 or is formed by the upper baffle plate 33 and the lower baffle plate 24 in a surrounding manner. The cooperation of the lower baffle plate 24 and the upper baffle plate 33 can prevent the silencing cotton 13 in the left silencing chamber 111 and the right silencing chamber 112 from entering the exhaust cavity 12 along with the air flow, so that the exhaust port 221 is blocked, the silencing effect and the stability of the silencer structure are improved, and the service life of the silencer structure is longer.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a muffler structure of air compressor machine which characterized in that: including amortization casing (1), the middle part of amortization casing (1) is equipped with amortization chamber (11), both ends are equipped with exhaust chamber (12), install amortization cotton (13) in amortization chamber (11), all be equipped with on the lower terminal surface on amortization casing (1) left side and right side with inlet port complex gas vent (221) of cylinder cap (4), gas vent (221) and exhaust chamber (12) intercommunication, every exhaust chamber (12) all communicate through two at least connecting holes (14) with amortization chamber (11), the bottom of amortization casing (1) is equipped with air intake grille or is equipped with a plurality of inlet ports.

2. The silencer structure of the air compressor as claimed in claim 1, wherein: the novel silencer is characterized in that a partition plate (15) is arranged in the middle of the silencing cavity (11), the silencing cavity (11) is divided into a left silencing chamber (111) and a right silencing chamber (112) by the partition plate (15), silencing cotton (13) is arranged in the left silencing chamber (111) and the right silencing chamber (112), and a plurality of long-strip-shaped air inlets are arranged at the bottoms of the left silencing chamber (111) and the right silencing chamber (112).

3. The silencer structure of the air compressor as claimed in claim 1, wherein: the amortization shell includes casing (2) and last lid (3) down, casing (2) and last lid (3) can be dismantled and be connected down, the outer border of going up lid (3) is buckled down and is formed surrounding edge (31), the lower extreme of surrounding edge (31) supports with the outer border of casing (2) down and leans on, amortization chamber (11) and exhaust chamber (12) surround by casing (2) and last lid (3) down and form.

4. The silencer structure of the air compressor as claimed in claim 3, wherein: the inner end of the outer edge of the lower shell (2) is provided with a convex edge (21) protruding upwards, and the lower end of the surrounding edge (31) is provided with a step (311) matched with the convex edge (21).

5. The silencer structure of the air compressor as claimed in claim 3, wherein: the left side and the right side of the upper part of the lower shell (2) are both provided with a lower connecting plate (22), the exhaust port (221) is arranged at the outer end of the lower connecting plate (22) and penetrates through the lower connecting plate (22) up and down, and the inner end of the lower connecting plate (22) is provided with a lower mounting hole (222); the left and right sides of going up lid (3) all is equipped with and lower connecting plate (22) complex upper junction plate (32), the inner of upper junction plate (32) is equipped with convex spliced pole (321) downwards, spliced pole (321) can support with the up end of lower connecting plate (22) and lean on, be equipped with last mounting hole (322) that run through spliced pole (321) from top to bottom on spliced pole (321), go up mounting hole (322) and lower mounting hole (222) cooperation setting.

6. The silencer structure of the air compressor as claimed in claim 5, wherein: the connecting plates on the front side and the rear side of the lower mounting hole (222) are both recessed downwards to form an air guide groove (23).

7. The silencer structure of the air compressor as claimed in claim 6, wherein: the bottom of the air guide groove (23) is an inclined surface which is gradually inclined downwards from outside to inside, and the width of the air guide groove (23) is gradually increased from outside to inside.

8. The silencer structure of the air compressor as claimed in claim 3, wherein: the left and right sides of casing (2) is equipped with baffle (24) down with amortization chamber (11) and exhaust chamber (12) separate down, the left and right sides of going up lid (3) is equipped with overhead gage (33) with amortization chamber (11) and exhaust chamber (12) separate, baffle (24) and overhead gage (33) correspond the setting down, go up lid (3) and casing (2) assembly back down, the lower extreme of overhead gage (33) supports with the upper end of lower baffle (24) and leans on, connecting hole (14) are located on overhead gage (33) or are located down on baffle (24) or surround by overhead gage (33) and lower baffle (24) and form.