Combined silencer of air compressor

Abstract

The utility model belongs to the technical field of air compressors, and provides a combined silencer of an air compressor, which comprises a silencing cylinder, a plurality of groups of conical silencing sheets and a fixing component. The fixing plug is driven by the rotary driving part to slide, so that the fixing plug retreats from the mounting cavity, the fixing plug retreats from the mounting cavity and is separated from the outer conical surface of the conical silencing sheet, shielding to the mounting cavity is canceled, and at the moment, the conical silencing sheet can be taken out from the mounting cavity or put into the mounting cavity, so that the number of overlapped conical silencing sheets is reduced or increased, and the service life of the conical silencing sheet is prolonged. When the number of the overlapped conical silencing sheets is adjusted to be proper, the driving part is rotated again to drive the fixing plug to slide, so that one end of the fixing plug extends into the mounting cavity to abut against the outer conical surfaces of the conical silencing sheets, and therefore the multiple groups of overlapped conical silencing sheets are fixed, and when the conical silencing sheets are used on different air compressors, the number of the fixed conical silencing sheets is conveniently adjusted according to requirements; therefore, the purpose of reducing the loss of the conical silencing sheet or improving the silencing effect is achieved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a combined muffler for an air compressor. Background Art

[0002] Air compressor is a common power equipment, which is a device that converts mechanical energy into gas pressure energy. At present, air compressors will generate a lot of noise during use. In order to reduce the impact of noise on the production environment, mufflers are usually installed on air compressors.

[0003] For example, the Chinese patent No. 202221544753.5 discloses a combined load-reducing and silencing device for an air compressor, including a valve body, a valve stem, a spring and a block. The inner cavity of the valve body is equipped with a valve stem, the bottom of the valve stem is fixedly connected to a block, the inner cavity of the valve body is equipped with a spring, and the top of the valve stem is inserted into the bottom of the inner cavity of the spring, and a silencing mechanism is installed on one side of the valve body; the silencing mechanism includes an outer shell, one end of the outer shell is fixedly connected to an end cover, the inner cavities of the outer shell and the end cover are fixedly equipped with conical silencing plates, and the conical silencing plates are provided in multiple groups, and the multiple groups of conical silencing plates are stacked together.

[0004] The silencer mechanism in the existing load-reducing silencer has a simple structure and can only fix a fixed number of conical silencers. When used on different air compressors, it is impossible to reduce the loss of the conical silencers or improve the silencer effect by reducing or increasing the number of conical silencers, which reduces the practicality of the device. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model proposes an air compressor combined silencer. When used on different air compressors, the number of fixed conical silencers can be adjusted according to needs to reduce the loss of the conical silencers or improve the silencer effect, thereby improving the practicability of the device.

[0006] An air compressor combined muffler, comprising:

[0007] A silencer is provided with an installation cavity therein, an air inlet is provided at one end of the installation cavity, the air inlet can be communicated with the load-reducing port of the valve body, and the other end of the installation cavity is communicated with the outside;

[0008] A plurality of groups of conical silencers are overlapped and arranged in the installation cavity, with the large ends close to the air inlet;

[0009] A fixing assembly includes a fixing plug and a driving member. The fixing plug can be slidably arranged on the silencer tube along the axial direction of the installation cavity. The driving member can be rotatably arranged on the fixing plug and is connected to the silencer tube. Rotating the driving member can drive the fixing plug to slide so that one end of the fixing plug can extend into the installation cavity and abut against the outer conical surface of the conical silencer plate. A penetrating conical exhaust hole is provided on the fixing plug. When the fixing plug abuts against the conical silencer plate, the small end of the conical exhaust hole is sealed and connected to the through hole on the conical silencer plate.

[0010] The beneficial effects of the above-mentioned air compressor combined muffler are:

[0011] The fixed plug is driven to slide by rotating the driving member so that the fixed plug exits the installation cavity. The fixed plug exits the installation cavity and is separated from the outer cone surface of the conical silencer, and the obstruction of the installation cavity is removed. At this time, the conical silencer can be taken out of the installation cavity or placed into the installation cavity, so as to reduce or increase the number of overlapping conical silencers. When the number of overlapping conical silencers is adjusted appropriately, the driving member is rotated again to drive the fixed plug to slide so that one end of the fixed plug extends into the installation cavity and contacts the outer cone surface of the conical silencer, thereby fixing the overlapping groups of conical silencers. When used on different air compressors, it is convenient to adjust the number of fixed conical silencers according to needs, so as to reduce the loss of conical silencers or improve the silencer effect, thereby improving the practicability of the device.

[0012] In one embodiment, the inner conical surface of the conical silencer is provided with multiple groups of positioning blocks at intervals along its circumference, and the outer conical surface of the conical silencer is provided with multiple groups of positioning grooves corresponding to the multiple groups of positioning blocks. The overlapping of multiple groups of conical silencers can make the positioning blocks on the conical silencers pass through the positioning grooves on the adjacent conical silencers. By providing the positioning blocks and the positioning grooves to cooperate, the relative rotation and mutual wear of the multiple groups of conical silencers during overlapping use can be avoided, thereby improving the service life of the conical silencers, and also improving the stability of the multiple groups of conical silencers when overlapping.

[0013] In one embodiment, the driving member includes an adjusting screw; a positioning rod is provided on the fixed plug, the positioning rod is provided in parallel with the silencer, and is slidably inserted into the silencer; the adjusting screw is provided in parallel with the silencer, one end of the adjusting screw is rotatably provided on the fixed plug, and the other end of the adjusting screw is threadedly connected with the silencer. The adjusting screw can be moved by rotating the adjusting screw to match the silencer thread, and the movement of the adjusting screw can drive the fixed plug to move, and the adjusting screw can be moved in the opposite direction by rotating the adjusting screw in the opposite direction to match the silencer thread, and the reverse movement of the adjusting screw can drive the fixed plug to move in the opposite direction, and the fixed plug can be driven to move conveniently, and the adjusting screw can be stopped to match the silencer thread to fix the adjusting bolt, thereby fixing the fixed plug, and the fixed plug can be fixed conveniently.

[0014] In one embodiment, a fixing bolt is threadedly connected to the peripheral side of the fixing plug, and rotating the fixing bolt can make one end of the fixing bolt abut against the adjusting screw. By setting the fixing bolt to abut against the adjusting screw to fix the adjusting screw, the stability of the adjusting screw when fixed can be improved, thereby improving the stability of the fixing of the fixing plug.

[0015] In one embodiment, a sealing ring is sleeved around the end of the fixing plug close to the installation cavity. By providing the sealing ring, when the fixing plug is inserted into the installation cavity, the sealing ring can improve the tightness of the connection between the fixing plug and the inner side of the installation cavity, thereby avoiding air leakage.

[0016] In one embodiment, the end of the fixing plug located in the installation cavity is detachably provided with a rubber pad, and the movement of the fixing plug can cause the rubber pad to contact the outer cone surface of the conical silencer. By providing the rubber pad to contact the outer cone surface of the conical silencer, the friction between the fixing plug and the conical silencer can be increased, and the phenomenon of overlapping multiple groups of conical silencers rotating as a whole can be avoided. At the same time, the elastic deformation of the rubber pad after extrusion can also avoid extrusion damage to the conical silencer when the fixing plug fixes the conical silencer, thereby increasing the service life of the conical silencer.

[0017] In one embodiment, the rubber pad is provided with a plurality of groups of open bayonet pins at intervals along its circumference, and the fixing plug is provided with a plurality of groups of pin holes corresponding to the plurality of groups of open bayonet pins, and the plurality of groups of open bayonet pins can be fixed in the plurality of groups of pin holes. The rubber pad is connected to the fixing plug by the open bayonet pins, and the rubber pad is convenient to install and remove, and is easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an air compressor combined muffler provided in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 A front view of a part of the components of an air compressor combined muffler shown in FIG.

[0021] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of a conical silencer in an air compressor combined silencer is shown;

[0022] Figure 4 for Figure 1 An exploded view of a fixed plug in an air compressor combination muffler is shown.

[0023] Reference numerals:

[0024] 10. Silencer; 101. Air inlet;

[0025] 20, conical silencer; 201, through hole; 202, positioning block; 203, positioning groove;

[0026] 30, fixing plug; 301, conical exhaust hole; 302, positioning rod; 303, sealing ring; 304, rubber pad; 3041, opening bayonet;

[0027] 40. Adjusting screw; 401. Tightening bolt. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0029] See also Figures 1 to 3 In one embodiment, an air compressor combined muffler includes a muffler cylinder 10, a plurality of groups of conical muffler plates 20 and a fixing assembly.

[0030] Among them, a mounting cavity is provided in the silencer 10, and an air inlet 101 is provided at one end of the mounting cavity. The air inlet 101 can be connected to the load-reducing port of the valve body, and the other end of the mounting cavity is connected to the outside. Multiple groups of conical silencers 20 are overlapped and arranged in the mounting cavity, and the large end is close to the air inlet 101. Specifically, multiple groups of positioning blocks 202 are arranged at intervals along the circumference of the inner conical surface of the conical silencer 20, and multiple groups of positioning grooves 203 are provided on the outer conical surface of the conical silencer 20 corresponding to the multiple groups of positioning blocks 202. The overlapping of multiple groups of conical silencers 20 can make the positioning blocks 202 on the conical silencers 20 pass through the positioning grooves 203 on the adjacent conical silencers 20.

[0031] In the above embodiment, by providing the positioning block 202 in cooperation with the positioning groove 203, it is possible to avoid the relative rotation and mutual wear of multiple groups of conical silencers 20 during overlapping use, thereby increasing the service life of the conical silencers 20 and also improving the stability of the multiple groups of conical silencers 20 when overlapping.

[0032] See also Figure 1 , Figure 2 , Figure 4 In one embodiment, the fixing assembly includes a fixing plug 30 and a driving member. The fixing plug 30 can be slidably arranged on the silencer 10 along the axial direction of the installation cavity. The driving member can be rotatably arranged on the fixing plug 30 and connected to the silencer 10. The rotating driving member can drive the fixing plug 30 to slide, so that one end of the fixing plug 30 can extend into the installation cavity and contact the outer conical surface of the conical silencer 20. A penetrating conical exhaust hole 301 is opened on the fixing plug 30. When the fixing plug 30 is against the conical silencer 20, the small end of the conical exhaust hole 301 is sealed and connected to the through hole 201 on the conical silencer 20.

[0033] Specifically, the driving member includes an adjusting screw 40; a positioning rod 302 is provided on the fixed plug 30, the positioning rod 302 is arranged parallel to the silencer 10, and is slidably passed through the silencer 10, the adjusting screw 40 is arranged parallel to the silencer 10, one end of the adjusting screw 40 is rotatably arranged on the fixed plug 30, and the other end of the adjusting screw 40 is threadedly connected to the silencer 10.

[0034] In the above embodiment, when it is necessary to change the number of overlaps of multiple groups of conical silencer sheets 20, the adjusting screw 40 is rotated and the adjusting screw 40 is rotated to cooperate with the thread of the silencer tube 10 to move the adjusting screw 40. The movement of the adjusting screw 40 drives the fixed plug 30 to move. When the fixed plug 30 moves out of the installation cavity, the fixed plug 30 is separated from the outer cone surface of the conical silencer sheet 20, and the shielding of the installation cavity is cancelled. At this time, the conical silencer sheet 20 can be taken out of the installation cavity or placed into the installation cavity to reduce or increase the number of overlaps of the conical silencer sheets 20. When the number of overlaps of the conical silencer sheets 20 is adjusted appropriately, the adjusting screw 40 is rotated in the opposite direction. Rod 40, the adjusting screw 40 can be moved in the reverse direction by rotating in the reverse direction and cooperating with the thread of the silencer tube 10, and the reverse movement of the adjusting screw 40 drives the fixing plug 30 to move in the reverse direction. When the fixing plug 30 moves in the reverse direction and extends into the installation cavity and contacts the outer cone surface of the conical silencer 20, the adjusting screw 40 is stopped from rotating to fix the fixing plug 30. At this time, the fixing plug 30 contacts the conical silencer 20 to fix the conical silencer 20, so that the number of fixed conical silencer 20 can be adjusted according to the needs, so as to achieve the purpose of reducing the loss of the conical silencer 20 or improving the silencer effect, which is convenient for use on different air compressors and improves the practicality of the device.

[0035] See also Figure 2 , Figure 4 In one embodiment, a set bolt 401 is threadedly connected to the peripheral side of the fixing plug 30, and rotating the set bolt 401 can make one end of the set bolt 401 abut against the adjusting screw 40. By setting the set bolt 401 to abut against the adjusting screw 40 to fix the adjusting screw 40, the stability of the adjusting screw 40 when being fixed can be improved, thereby improving the stability of the fixing of the fixing plug 30, and preventing the vibration generated when the air compressor is working from causing the adjusting screw 40 to rotate.

[0036] See also Figure 2 , Figure 4 In one embodiment, a sealing ring 303 is sleeved around the end of the fixing plug 30 close to the installation cavity. By providing the sealing ring 303, when the fixing plug 30 is inserted into the installation cavity, the sealing ring 303 can improve the tightness of the connection between the fixing plug 30 and the inner side of the installation cavity, thereby avoiding air leakage.

[0037] See also Figure 2 , Figure 4 In one embodiment, the end of the fixing plug 30 located in the installation cavity is detachably provided with a rubber pad 304, and the movement of the fixing plug 30 can make the rubber pad 304 contact the outer conical surface of the conical muffler 20. Specifically, the rubber pad 304 is provided with multiple groups of open bayonet pins 3041 at intervals along its circumference, and the fixing plug 30 is provided with multiple groups of pin holes corresponding to the multiple groups of open bayonet pins 3041, and the multiple groups of open bayonet pins 3041 can be clamped in the multiple groups of pin holes.

[0038] In the above embodiment, by setting the rubber pad 304 to contact the outer cone surface of the conical silencer 20, the friction between the fixing plug 30 and the conical silencer 20 can be increased, and the phenomenon of overlapping multiple groups of conical silencer 20 rotating as a whole can be avoided. At the same time, the elastic deformation of the rubber pad 304 after extrusion can also avoid the conical silencer 20 being squeezed and damaged when the fixing plug 30 fixes the conical silencer 20, thereby improving the service life of the conical silencer 20. At the same time, the rubber pad 304 is connected to the fixing plug 30 by an opening bayonet pin 3041, which makes it easy to install and disassemble the rubber pad 304 and facilitate the replacement of the rubber pad 304.

[0039] The specific implementation of the above-mentioned air compressor combined muffler is:

[0040] By rotating the adjusting screw 40, the adjusting screw 40 rotates and cooperates with the thread of the silencer tube 10 to move the adjusting screw 40, and the movement of the adjusting screw 40 drives the fixed plug 30 to move. When the fixed plug 30 moves out of the installation cavity, the fixed plug 30 is separated from the outer cone of the conical silencer 20, and the shielding of the installation cavity is cancelled. At this time, the conical silencer 20 can be taken out of the installation cavity or put into the installation cavity, so as to reduce or increase the overlapping number of the conical silencer 20. When the overlapping number of the conical silencer 20 is adjusted appropriately, the adjusting screw 40 is rotated in the opposite direction, and the adjusting screw 40 rotates in the opposite direction to cooperate with the thread of the silencer tube 10 to move the adjusting screw 40 in the opposite direction. The reverse movement of the adjusting screw 40 drives the fixed plug 30 to move in the opposite direction. When the fixing plug 30 moves in the opposite direction and extends into the installation cavity and contacts the outer cone surface of the conical silencer 20, the rotation of the adjusting screw 40 is stopped to fix the fixing plug 30. At this time, the fixing plug 30 contacts the conical silencer 20 to fix the conical silencer 20. It can be understood that when the noise of the air compressor is relatively small, by reducing the number of overlapping conical silencers 20, the number of conical silencers 20 used can be reduced while meeting the noise reduction requirements, thereby reducing the loss of conical silencers 20. When the noise of the air compressor is relatively large, the sound absorption and silencing effect of the device can be improved by increasing the number of overlapping conical silencers 20, thereby achieving the purpose of reducing the loss of conical silencers 20 or improving the silencing effect, which is convenient for use on different air compressors and improves the practicality of the device.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An air compressor combined muffler, characterized in that: include: A silencer (10) is provided with an installation cavity therein, an air inlet (101) is provided at one end of the installation cavity, the air inlet (101) can be communicated with a load-reducing port of a valve body, and the other end of the installation cavity is communicated with the outside; A plurality of groups of conical silencer sheets (20) are overlapped and arranged in the installation cavity, with the large ends thereof being close to the air inlet (101); A fixing assembly comprises a fixing plug (30) and a driving member, wherein the fixing plug (30) can be slidably arranged on the silencer (10) along the axial direction of the installation cavity, and the driving member can be rotatably arranged on the fixing plug (30) and connected to the silencer (10), and the rotation of the driving member can drive the fixing plug (30) to slide, so that one end of the fixing plug (30) can extend into the installation cavity and abut against the outer conical surface of the conical silencer (20), and a through conical exhaust hole (301) is provided on the fixing plug (30), and when the fixing plug (30) abuts against the conical silencer (20), the small end of the conical exhaust hole (301) is sealed and connected to the through hole (201) on the conical silencer (20).

2. The air compressor combined muffler according to claim 1, characterized in that: The inner conical surface of the conical sound-absorbing plate (20) is provided with a plurality of groups of positioning blocks (202) at intervals along its circumference, and the outer conical surface of the conical sound-absorbing plate (20) is provided with a plurality of groups of positioning grooves (203) corresponding to the plurality of groups of positioning blocks (202). The overlapping of the plurality of groups of conical sound-absorbing plates (20) enables the positioning blocks (202) on the conical sound-absorbing plates (20) to pass through the positioning grooves (203) on the adjacent conical sound-absorbing plates (20).

3. The air compressor combined muffler according to claim 1, characterized in that: The driving member comprises an adjusting screw (40); a positioning rod (302) is arranged on the fixing plug (30); the positioning rod (302) is arranged in parallel with the silencer (10) and is slidably inserted into the silencer (10); the adjusting screw (40) is arranged in parallel with the silencer (10); one end of the adjusting screw (40) is rotatably arranged on the fixing plug (30); and the other end of the adjusting screw (40) is threadedly connected to the silencer (10).

4. The air compressor combined muffler according to claim 3, characterized in that: A fixing bolt (401) is threadedly connected to the peripheral side of the fixing plug (30), and rotating the fixing bolt (401) can cause one end of the fixing bolt (401) to abut against the adjusting screw (40).

5. The air compressor combined muffler according to claim 1, characterized in that: A sealing ring (303) is sleeved on the circumferential side of the end portion of the fixing plug (30) close to the installation cavity.

6. The air compressor combined muffler according to claim 1, characterized in that: The end of the fixing plug (30) located in the installation cavity is detachably provided with a rubber pad (304), and the movement of the fixing plug (30) enables the rubber pad (304) to contact the outer conical surface of the conical sound-absorbing plate (20).

7. The air compressor combined muffler according to claim 6, characterized in that: The rubber pad (304) is provided with a plurality of groups of open bayonet pins (3041) at intervals along its circumference, and the fixing plug (30) is provided with a plurality of groups of pin holes corresponding to the plurality of groups of open bayonet pins (3041), and the plurality of groups of open bayonet pins (3041) can be locked in the plurality of groups of pin holes.

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