CN215927940U

CN215927940U - Vacuum generator with external silencer

Info

Publication number: CN215927940U
Application number: CN202122241733.2U
Authority: CN
Inventors: 钱培锋
Original assignee: Zhejiang Xikedi Pneumatic Co ltd
Current assignee: Zhejiang Xikedi Pneumatic Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-03-01
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses an external silencer type vacuum generator which comprises a vacuum generator cylinder body and a silencer, wherein an air inlet end cover and an air outlet end cover are respectively arranged at two ends of the vacuum generator cylinder body, an air inlet pipeline and an air outlet pipeline are respectively arranged on the air inlet end cover and the air outlet end cover, a vacuum chamber and an air suction port are arranged on the vacuum generator cylinder body, a plurality of air injection pipelines are erected in the vacuum chamber, an injection nozzle connected with the air inlet pipeline is arranged in the air injection pipeline, vacuumizing holes are formed in the side wall of the air injection pipeline at the nozzle position of the injection nozzle and communicated with the vacuum chamber, and a silencing barrel communicated with the air outlet pipeline is arranged on the silencer. The utility model is a split structure, a plurality of air injection pipelines are erected in the cylinder body of the vacuum generator, the vacuum degree is large, the flow is large, the taking-out efficiency is more accurate and rapid, and the utility model has ideal effect on the automatic taking-out of the mechanical arm of a large-scale product.

Description

Vacuum generator with external silencer

Technical Field

The utility model relates to a vacuum generator, in particular to an external silencer type vacuum generator.

Background

The vacuum generator is a new type, high-efficiency, clean, economic and small vacuum component using positive pressure air source to produce negative pressure, and it is very easy and convenient to obtain negative pressure in the place with compressed air or in the place needing positive and negative pressure in a pneumatic system. Vacuum generators are widely used in industrial automation in the fields of machinery, electronics, packaging, printing, plastics, robots, and the like. However, since the operation principle of the vacuum generator in the prior art is that a certain pressure of air flow generates a negative pressure by generating a flow siphon effect through the nozzle, the nozzle is required to exhaust air all the time, and a silencer is required. The existing vacuum generator has the following disadvantages: 1. the original vacuum generator panel is of an integrated structure, only one side panel is provided with a vacuum port, only different types of products can be selected according to the requirements of different working conditions, and only the whole vacuum generator panel can be replaced if part of the panel is damaged; 2. the original generator is of an integral structure, the channel is fixedly arranged in the body, the air suction quantity is small, the vacuum flow is fixed, and the vacuum flow cannot be adjusted according to different working condition requirements; 3. the original noise eliminator is a built-in integrated type, is small in size, can only reduce noise by 70 decibels, is not obvious in noise reduction effect, still has large noise which generally reaches 75-90 decibels, can cause damage to human bodies for a long time in the environment, and is inconvenient to use and easy to block.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, and provides an external silencer type vacuum generator which is convenient to adjust the vacuum flow according to different working conditions and has the advantages of large flow, low noise and the like.

The utility model adopts the technical scheme for solving the technical problems that: an external silencer type vacuum generator comprises a vacuum generator cylinder body and a silencer, wherein an air inlet end cover and an air outlet end cover are respectively arranged at two ends of the vacuum generator cylinder body, an air inlet pipeline and an air outlet pipeline are respectively arranged on the air inlet end cover and the air outlet end cover, a vacuum chamber is arranged inside the vacuum generator cylinder body, an air suction port communicated with the vacuum chamber is arranged on the outer wall of the vacuum generator cylinder body, a plurality of air injection pipelines are erected in the vacuum chamber, two ends of the air injection pipelines are respectively communicated with the inner ends of the air inlet pipeline and the air outlet pipeline, an injection nozzle connected with the air inlet pipeline is arranged in the air injection pipeline, vacuumizing holes are formed in the side wall of the air injection pipeline at the nozzle position of the injection nozzle and communicated with the vacuum chamber, and the silencer is fixedly connected with the air outlet end cover in a detachable mode, and the silencer is provided with a silencing barrel communicated with the air outlet pipeline.

In order to further improve the structure, the air outlet end cover comprises a split structure and comprises an air outlet side shell cover and a confluence side shell cover which are buckled with each other left and right, the air outlet pipeline is arranged on the air outlet side shell cover, a conical-cylinder-shaped diffuser pipe is fixedly arranged at the outer end of the air outlet pipeline, the diffuser pipe is located inside the confluence side shell cover, an air outlet is arranged at the bottom of the confluence side shell cover, the air outlet is located under the diffuser pipe, and the silencing cylinder is located under the air outlet.

Further perfection, be equipped with sound absorption grid pore structure on the gas vent.

Further perfection, the upside of gas vent is installed and is inhaled the sound filter screen.

Further perfect, the silencer top is equipped with four L shape trips, the bottom of the end cover of giving vent to anger is equipped with four L shape draw-in grooves, L shape trip and the cooperation of L shape draw-in groove realize the slidingtype joint of pegging graft, be equipped with bellied spacing trip in the L shape draw-in groove, spacing trip is used for preventing that L shape trip is outwards not hard up.

Further perfection, the central line of the silencing cylinder is perpendicular to the central line of the air injection pipeline.

Further perfection, the number of the air injection pipelines is at least two, and the two air injection pipelines are arranged in parallel up and down.

Further perfect, still be equipped with the disappointing passageway with external atmosphere intercommunication on the inlet end cover, be equipped with the solenoid valve that loses heart on the passageway that loses heart, the upper reaches of admission line is connected with the passageway that loses heart, the low reaches of admission line are equipped with the solenoid valve that admits air.

Further perfection, the inlet end cover is split type structure, including control side cap and the vacuum side cap of controlling mutual lock, the admission line is including the first air inlet chamber, second air inlet chamber, third air inlet chamber and the fourth air inlet chamber that communicate in proper order, first air inlet chamber and fourth air inlet chamber set up on vacuum side cap, second air inlet chamber and third air inlet chamber set up on control side cap, the passageway that bleeds is pressed from both sides in the middle of control side cap and vacuum side cap, install on the lateral wall of control side cap bleed solenoid valve and air solenoid valve, bleed solenoid valve is used for controlling switch-on or blocking between the second air inlet chamber and the passageway that bleeds, air solenoid valve is used for controlling switch-on or blocking between the second air inlet chamber and the third air inlet chamber, jet-propelled pipeline is linked together with the fourth air inlet chamber, the bottom of control side cap is equipped with the pressure release mouth that is linked together with the passageway that loses heart, is equipped with adjustable off-load valve on the pressure release mouth, the bottom of vacuum side cap is equipped with the air inlet, is equipped with air inlet joint on the air inlet.

The utility model has the beneficial effects that: the utility model is a split structure, the vacuum generator cylinder body and the air injection pipeline can be partially replaced when the size of the connector is changed or the connector is damaged, and the vacuum generator cylinder body can be provided with a plurality of air suction ports and can work in a plurality of directions simultaneously; a plurality of air injection pipelines are erected in the cylinder body of the vacuum generator, so that the vacuum generator is large in vacuum degree and flow, the taking-out efficiency is more accurate and rapid, and the automatic taking-out device has an ideal effect on the automatic taking-out of a mechanical arm of a large-sized product; if part of the air injection pipeline is damaged, the air injection pipeline can be singly replaced; the silencer is an external detachable structure, is convenient to install and maintain, is provided with a plurality of sound absorbing cylinders, has a noise reduction effect of 30 decibels, cannot cause damage to the body of a person in the environment for a long time, and is inconvenient to use and not easy to block.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the structure of the right side of the vacuum side cover;

FIG. 4 is a schematic view of the structure of the left side of the vacuum side cover;

FIG. 5 is a schematic structural diagram of the right side of the control-side housing cover;

FIG. 6 is a schematic view of the left side of the control side housing cover;

description of reference numerals: 1. the vacuum generator comprises a vacuum generator cylinder body, 11, a vacuum chamber, 12, an air inlet, 2, an air inlet end cover, 21, an air inlet pipeline, 211, a first air inlet cavity, 212, a second air inlet cavity, 213, a third air inlet cavity, 214, a fourth air inlet cavity, 22, an air release channel, 23, an air release electromagnetic valve, 24, an air inlet electromagnetic valve, 25, a control side shell cover, 251, a pressure release port, 252, an unloading valve, 26, a vacuum side shell cover, 261, an air inlet, 262, an air inlet joint, 3, an air outlet end cover, 31, an air outlet pipeline, 32, an air outlet side shell cover, 33, a converging side shell cover, 34, a diffuser pipe, 35, an air outlet, 351, a sound absorption grid hole structure, 352, a sound absorption filter screen, 36, an L-shaped clamping groove, 361, a limiting clamping hook, 4, an air injection pipeline, 41, an injection nozzle, 42, a vacuum pumping hole, 5, a silencer, 51, a sound absorption cylinder, 52 and an L-shaped clamping hook.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which:

referring to figures 1-2: in the embodiment, an external muffler type vacuum generator comprises a vacuum generator cylinder body 1 and a muffler 5, wherein an air inlet end cover 2 and an air outlet end cover 3 are respectively arranged at two ends of the vacuum generator cylinder body 1, an air inlet pipeline 21 and an air outlet pipeline 31 are respectively arranged on the air inlet end cover 2 and the air outlet end cover 3, a vacuum chamber 11 is arranged inside the vacuum generator cylinder body 1, an air suction port 12 communicated with the vacuum chamber 11 is arranged on the outer wall of the vacuum generator cylinder body 1, a plurality of air injection pipelines 4 are erected inside the vacuum chamber 11, two ends of the air injection pipelines 4 are respectively communicated with the inner ends of the air inlet pipeline 21 and the air outlet pipeline 31, an injection nozzle 41 connected with the air inlet pipeline 21 is arranged inside the air injection pipeline 4, a vacuumizing hole 42 is arranged on the side wall of the air injection pipeline 4 at the nozzle position of the injection nozzle 41, the vacuumizing hole 42 is communicated with the vacuum chamber 11, the silencer 5 is detachably and fixedly connected with the air outlet end cover 3, and a silencing barrel 51 communicated with the air outlet pipeline 31 is arranged on the silencer 5. The working principle is as follows: compressed air is introduced into the vacuum generator through the air inlet pipeline 21 on the air inlet end cover 2 and is sprayed into the air injection pipeline 4 through the spray nozzle 41 to form high-speed airflow, the flow rate of the gas in the air injection pipeline 4 is high, the pressure intensity is reduced, the air in the vacuum chamber 11 is sucked into the air injection pipeline 4 through the vacuumizing hole 42, flows out from the air outlet pipeline 31 along with the high-speed airflow and is discharged to the outside after being subjected to noise reduction through the silencing cylinder 51 of the silencer 5, at the moment, a vacuum negative pressure environment is generated in the vacuum generator cylinder body 1, and the air inlet 12 can be connected with working elements such as a sucker through an air pipe to work. The vacuum generator is of a split structure, the cylinder body and the air injection pipeline of the vacuum generator can be partially replaced when the size of the connector is changed or the connector is damaged, and the cylinder body of the vacuum generator can be provided with a plurality of air suction ports and can work in a plurality of directions simultaneously; the vacuum generator cylinder body is internally provided with a plurality of air injection pipelines, so that the vacuum degree is large, the flow is large, the taking-out efficiency is more accurate and quick, and the automatic taking-out device has an ideal effect on the automatic taking-out of the mechanical arm of a large-sized product.

As shown in fig. 2, the air outlet end cap 3 is a split structure, and includes an air outlet side housing cap 32 and a converging side housing cap 33 that are engaged with each other left and right, the air outlet pipe 31 is disposed on the air outlet side housing cap 32, a conical diffuser pipe 34 is fixedly mounted at an outer end of the air outlet pipe 31, the diffuser pipe 34 is located inside the converging side housing cap 33, an air outlet 35 is disposed at a bottom of the converging side housing cap 33, the air outlet 35 is located right below the diffuser pipe 34, and the sound-muffling cylinder 51 is located right below the air outlet 35. Diffuser pipe 34 with converging side cap 33 can effectually reduce the velocity of flow of gaseous outflow, improves noise reduction, has a plurality of sound barrels on the silencer, and noise reduction can reach 30 decibels, can not cause the harm to personnel's health under this environment for a long time, uses inconvenient and be difficult to the jam.

The exhaust port 35 is provided with a sound-absorbing grating hole structure 351, so that sound absorption and noise reduction can be further realized. The sound absorption filter screen 352 is installed on the upper side of the exhaust port 35, so that the silencing effect at the exhaust port 35 can be further improved, and the effect of filtering and dust prevention can be achieved. The top of the silencer 5 is provided with four L-shaped clamping hooks 52, the bottom of the air outlet end cover 3 is provided with four L-shaped clamping grooves 36, the L-shaped clamping hooks 52 are matched with the L-shaped clamping grooves 36 to realize plug-in sliding type clamping, and the silencer is of an external detachable structure and is convenient to install and maintain. A raised limiting clamping hook 361 is arranged in the L-shaped clamping groove 36, and the limiting clamping hook 361 is used for preventing the L-shaped clamping hook 52 from loosening outwards. The central line of the silencing barrel 51 is perpendicular to the central line of the air injection pipeline 4, so that the problem of overlarge noise caused by direct exhaust of gas can be solved. The number of the air injection pipelines 4 is at least two, the two air injection pipelines 4 are arranged in parallel up and down, if part of the air injection pipelines are damaged, single replacement can be carried out, the air injection pipelines are arranged in parallel, the vacuum degree is high, the flow is high, and the like, so that the generation and the damage speed in the cylinder body of the vacuum generator are higher, and the reaction is more sensitive.

As shown in fig. 3-6, the air inlet cover 2 is further provided with an air release passage 22 communicated with the outside atmosphere, the air release passage 22 is provided with an air release solenoid valve 23, the upstream of the air inlet pipe 21 is connected with the air release passage 22, and the downstream of the air inlet pipe 21 is provided with an air inlet solenoid valve 24, so that the vacuum flow can be adjusted according to different working conditions. The air inlet cover 2 is of a split structure and comprises a control side cover 25 and a vacuum side cover 26 which are buckled with each other left and right, the air inlet pipeline 21 comprises a first air inlet cavity 211, a second air inlet cavity 212, a third air inlet cavity 213 and a fourth air inlet cavity 214 which are sequentially communicated, the first air inlet cavity 211 and the fourth air inlet cavity 214 are arranged on the vacuum side cover 26, the second air inlet cavity 212 and the third air inlet cavity 213 are arranged on the control side cover 25, the air release channel 22 is clamped between the control side cover 25 and the vacuum side cover 26, the air release solenoid valve 23 and the air inlet solenoid valve 24 are arranged on the outer side wall of the control side cover 25, the air release solenoid valve 23 is used for controlling the connection or blocking between the second air inlet cavity 212 and the air release channel 22, the air inlet solenoid valve 24 is used for controlling the connection or blocking between the second air inlet cavity 212 and the third air inlet cavity 213, the air injection pipeline 4 is communicated with the fourth air inlet cavity 214, the bottom of the control side shell cover 25 is provided with a pressure relief opening 251 communicated with the air escape channel 22, excessive compressed air can be discharged, certain vacuum degree is obtained, the pressure relief opening 251 is provided with an adjustable unloading valve 252, the bottom of the vacuum side shell cover 26 is provided with an air inlet 261, and the air inlet 261 is provided with an air inlet joint 262 which can be connected with compressed air.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. An external muffler type vacuum generator, includes vacuum generator cylinder body (1) and silencer (5), its characterized in that: the vacuum generator comprises a vacuum generator cylinder body (1), wherein an air inlet end cover (2) and an air outlet end cover (3) are respectively arranged at two ends of the vacuum generator cylinder body (1), an air inlet pipeline (21) and an air outlet pipeline (31) are respectively arranged on the air inlet end cover (2) and the air outlet end cover (3), a vacuum chamber (11) is arranged in the vacuum generator cylinder body (1), an air suction port (12) communicated with the vacuum chamber (11) is arranged on the outer wall of the vacuum generator cylinder body (1), a plurality of air injection pipelines (4) are erected in the vacuum chamber (11), two ends of the air injection pipelines (4) are respectively communicated with the inner ends of the air inlet pipeline (21) and the air outlet pipeline (31), an injection nozzle (41) connected with the air inlet pipeline (21) is arranged in the air injection pipeline (4), and a vacuumizing nozzle (42) is arranged on the side wall of the air injection pipeline (4) at the position of the injection nozzle (41), the vacuumizing hole (42) is communicated with the vacuum cavity (11), the silencer (5) is detachably and fixedly connected with the air outlet end cover (3), and a silencing barrel (51) communicated with the air outlet pipeline (31) is arranged on the silencer (5).

2. An external muffler type vacuum generator as set forth in claim 1, wherein: the air outlet end cover (3) comprises a split structure and comprises an air outlet side shell cover (32) and a confluence side shell cover (33) which are buckled with each other left and right, the air outlet pipeline (31) is arranged on the air outlet side shell cover (32), a conical-tube-shaped diffuser pipe (34) is fixedly installed at the outer end of the air outlet pipeline (31), the diffuser pipe (34) is located inside the confluence side shell cover (33), an air outlet (35) is arranged at the bottom of the confluence side shell cover (33), the air outlet (35) is located under the diffuser pipe (34), and the silencing tube (51) is located under the air outlet (35).

3. An external muffler type vacuum generator as set forth in claim 2, wherein: and a sound absorption grid hole structure (351) is arranged on the exhaust port (35).

4. An external muffler type vacuum generator as set forth in claim 2, wherein: and a sound absorption filter screen (352) is arranged on the upper side of the exhaust port (35).

5. An external muffler type vacuum generator as set forth in claim 2, wherein: silencer (5) top is equipped with four L shape trip (52), the bottom of giving vent to anger end cover (3) is equipped with four L shape draw-in grooves (36), L shape trip (52) realize grafting slidingtype joint with L shape draw-in groove (36) cooperation, be equipped with bellied spacing trip (361) in L shape draw-in groove (36), spacing trip (361) are used for preventing that L shape trip (52) are outwards not hard up.

6. An external muffler type vacuum generator as set forth in any one of claims 1 to 5, wherein: the center line of the silencing barrel (51) is perpendicular to the center line of the air injection pipeline (4).

7. An external muffler type vacuum generator as set forth in claim 1 or 6, wherein: the number of the air injection pipelines (4) is at least two, and the two air injection pipelines (4) are arranged in parallel up and down.

8. An external muffler type vacuum generator as set forth in any one of claims 1 to 5, wherein: still be equipped with on air inlet end cover (2) the passageway of disappointing (22) with external atmosphere intercommunication, be equipped with on the passageway of disappointing (22) solenoid valve (23) that loses heart, the upper reaches of admission line (21) is connected with passageway of disappointing (22), the low reaches of admission line (21) are equipped with air intake solenoid valve (24).

9. An external muffler type vacuum generator as set forth in claim 8, wherein: air inlet end cover (2) is split type structure, including control side cap (25) and the vacuum side cap (26) of controlling mutual lock, inlet duct (21) is including first air intake chamber (211), second air intake chamber (212), third air intake chamber (213) and fourth air intake chamber (214) that communicate in proper order, first air intake chamber (211) and fourth air intake chamber (214) set up on vacuum side cap (26), second air intake chamber (212) and third air intake chamber (213) set up on control side cap (25), it is middle in control side cap (25) and vacuum side cap (26) that passageway (22) press from both sides to lose heart, install on the lateral wall of control side cap (25) solenoid valve (23) and air inlet solenoid valve (24) lose heart solenoid valve (23) are used for control second air intake chamber (212) with switch-on or block between the passageway (22) of losing heart, air inlet solenoid valve (24) are used for control second air inlet chamber (212) with switch-on or blocking between third air inlet chamber (213), jet-propelled pipeline (4) are linked together with fourth air inlet chamber (214), the bottom of control side cap (25) is equipped with pressure release mouth (251) that are linked together with disappointing passageway (22), is equipped with adjustable off-load valve (252) on pressure release mouth (251), the bottom of vacuum side cap (26) is equipped with air inlet (261), is equipped with air inlet joint (262) on air inlet (261).