Vacuum generator with blowing function

Abstract

The utility model discloses a vacuum generator with an air blowing function, which comprises a shell body, a vacuum port, a vacuum generation air supply port, a vacuum breaking air supply port and an air outlet are arranged on the shell body, a mounting through hole is arranged between the vacuum generation air supply port and the air outlet, a vacuum cavity is arranged between the vacuum port and the mounting through hole, and the vacuum cavity is communicated with the vacuum port. A switching cavity is formed between the vacuum breaking air supply port and the mounting through hole, a diffusion pipe is arranged in the mounting through hole, a nozzle is arranged at one end of the diffusion pipe, a runner hole communicated with the vacuum cavity is formed in the surface of the diffusion pipe, and an air path switching assembly is arranged at the other end of the diffusion pipe; the gas path switching assembly comprises a plug sleeve and an exhaust port blocking piece, the exhaust port blocking piece is fixedly arranged on the gas outlet, an exhaust hole is formed in the position, corresponding to the top of the plug sleeve, of the surface of the exhaust port blocking piece, a spring is arranged between the plug sleeve and the exhaust port blocking piece, and a gas supply gap is formed between the inner wall of the plug sleeve and the diffusion pipe. The vacuum breaking speed can be further improved, and high-beat action can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vacuum generator, concretely relates to a vacuum generator with blowing function. BACKGROUND

[0002] The vacuum generator is a kind of device for generating vacuum by compressed air, is widely used in industrial automation, medical equipment and other fields, when working, by solenoid valve cooperation, compressed air enters vacuum generator from the vacuum air supply port of vacuum generator, then is discharged from the exhaust port of vacuum generator, utilizes Laval nozzle, generates vacuum, to suck object;When needing to release object, solenoid valve loses power, originally closed atmosphere interface opens, atmosphere immediately rushes into suction cup, restores normal pressure quickly, so that the pressure balance inside and outside suction cup, loses adsorption force, can smoothly release object.

[0003] The above structure is the generator without breaking vacuum function, and the time period of restoring normal pressure by atmosphere is relatively long, which is not conducive to quickly releasing object. There are also some generators with vacuum breaking pipeline, and the vacuum breaking pipeline is directly connected with vacuum cavity, when needing to break vacuum, it does not rely on the rush of atmosphere, but realizes the balance of internal and external pressure by compressed gas in vacuum breaking pipeline, which can greatly shorten the recovery time.

[0004] But in actual use, compressed gas in vacuum breaking pipeline is discharged from exhaust port and vacuum port simultaneously, which reduces the reaction speed of vacuum breaking, and cannot adapt to high-beat action scene use. SUMMARY

[0005] The utility model wants to solve the technical problem to provide a kind of vacuum generator with blowing function, can further improve the vacuum breaking speed, can realize high-beat action.

[0006] To solve the above technical problem, the utility model provides a kind of vacuum generator with blowing function, including shell body, vacuum port, vacuum generation air supply port, vacuum breaking air supply port and gas outlet are arranged on shell body, installation through-hole is arranged between vacuum generation air supply port and gas outlet, vacuum cavity is arranged between vacuum port and installation through-hole, switching cavity is arranged between vacuum breaking air supply port and installation through-hole, diffusion pipe is arranged in installation through-hole, one end of diffusion pipe is provided with nozzle and surface is provided with flow channel hole that is through with vacuum cavity, the other end of diffusion pipe is provided with gas path switching assembly;

[0007] The gas path switching assembly comprises a plug sleeve and an exhaust port baffle, the exhaust port baffle is fixedly arranged on the air outlet, an exhaust hole is arranged on the surface of the exhaust port baffle at the top of the plug sleeve, a spring is arranged between the plug sleeve and the exhaust port baffle, the plug sleeve is sleeved on the boss at the end of the diffusion pipe, a gas supply gap is arranged between the inner wall of the plug sleeve and the diffusion pipe, and the boss is arranged in the switching cavity.

[0008] Further, the air outlet is provided with a silencer, and the exhaust port baffle is arranged between the silencer and the end of the air outlet.

[0009] Further, the inner wall of the plug sleeve is provided with a stepped counterbore, the large end of the stepped counterbore faces the exhaust port baffle, and one end of the spring is abutted on the stepped portion of the stepped counterbore.

[0010] Further, the outer wall of the plug sleeve is arranged in close contact with the inner wall of the mounting through hole.

[0011] Further, at least two annular protrusions are arranged on the outer wall of the plug sleeve and arranged in close contact with the inner wall of the mounting through hole.

[0012] Further, the surface of the nozzle is provided with a first sealing ring.

[0013] Further, a gas supply channel is arranged between the vacuum breaking gas supply port and the switching cavity, the gas supply channel comprises a transverse through channel and a longitudinal connecting channel, the longitudinal connecting channel is connected through the middle of the transverse through channel, one end of the transverse through channel is connected through the switching cavity, the other end is connected through the outside and is internally provided with a plugging member.

[0014] Further, a second sealing ring is arranged on the surface of the diffusion pipe between the vacuum cavity and the switching cavity.

[0015] Further, the number of the second sealing ring is 2, a limiting recess is arranged on the diffusion pipe between the two second sealing rings, a fixing hole is arranged on the corresponding shell body, and a pin is arranged in the fixing hole.

[0016] Further, the shell body is provided with a mounting lock hole.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. The cooperation of the plug sleeve, spring and exhaust baffle, when using vacuum suction, the spring keeps the plug sleeve and the exhaust baffle separated, effectively exhausts, and when vacuum breaking is needed, another way of compressed gas can move the plug sleeve and block the exhaust holes on the exhaust baffle, so that the compressed gas for vacuum breaking can enter the inside of the diffusion pipe, that is, into the vacuum cavity, realizing the effect of vacuum breaking. Since the gas overflow is small, the vacuum breaking reaction is faster, and high beat action is possible. The spring can make the plug sleeve automatically reset without external force.

[0019] 2. The exhaust hole is arranged on the surface of the exhaust baffle corresponding to the top of the plug sleeve. When the plug sleeve abuts against the surface of the exhaust baffle, the exhaust hole can be blocked, the structure is simple, and the plugging effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure schematic diagram of the utility model;

[0021] Figure 2 is the cross-sectional structure schematic diagram of the utility model in the vacuum suction state;

[0022] Figure 3 is the explosion schematic diagram of the assembly in the installation channel hole of the utility model;

[0023] Figure 4 is the cooperation structure schematic diagram between the diffusion pipe and the nozzle of the utility model;

[0024] Figure 5 is the cross-sectional structure schematic diagram of the utility model in the vacuum breaking state. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and can be implemented, but the embodiments are not as the limitation of the utility model.

[0026] Referring to Figures 1 to 5 The embodiment of the vacuum generator with blowing function of the utility model, including shell body 1, the shell body is provided with vacuum port 2, vacuum generation gas supply port 3, vacuum breaking gas supply port 4 and gas outlet 5, vacuum generation gas supply port and gas outlet are provided with installation through hole between them, vacuum cavity 6 is provided between vacuum port and installation through hole, vacuum breaking gas supply port and installation through hole are provided with switching cavity 7, installation through hole is provided with diffusion pipe 8, one end of diffusion pipe is provided with nozzle 9 and the surface is provided with flow channel hole 10 that is through with vacuum cavity, the other end of diffusion pipe is provided with gas path switching assembly.

[0027] The structure works as follows: compressed gas is supplied to the vacuum generating supply port, and the compressed gas is sprayed toward the diffusion tube through the nozzle, and then sprayed out of the end of the diffusion tube, i.e. the gas outlet, to release the gas. In this process, the negative pressure is generated in the vacuum chamber, so that the vacuum port can adsorb the product. In this process, the gas path switching assembly does not block the compressed gas, and the uninterrupted gas supply ensures that the adsorption state is always maintained. Referring to Figure 2 When it is necessary to release the adsorption, the vacuum generating supply port stops supplying the gas, and the compressed gas is supplied to the vacuum breaking supply port. The compressed gas first enters the switching chamber, and then acts on the gas path switching assembly to make the gas path switching assembly act to block the gas from being discharged from the gas outlet. At this time, the compressed gas can only move toward the nozzle direction through the end of the diffusion tube. Since the nozzle position is blocked by the vacuum generating supply port, the compressed gas can only enter the vacuum chamber through the flow hole. Thus, the vacuum breaking effect is achieved. Referring to Figure 5

[0028] The above-mentioned way basically uses the compressed gas supplied by the vacuum breaking to break the vacuum, so that the response time is fast, and high beat action can be achieved.

[0029] Referring to Figure 3 The gas path switching assembly includes a plug sleeve 11 and a gas outlet baffle 12. The gas outlet baffle is fixedly arranged on the gas outlet. The top of the plug sleeve is provided with a gas discharge hole 13 corresponding to the surface of the gas outlet baffle. A spring 14 is arranged between the plug sleeve and the gas outlet baffle. The plug sleeve is sleeved on a boss 15 at the end of the diffusion tube. A gas supply gap is arranged between the inner wall of the plug sleeve and the diffusion tube. The boss is arranged in the switching chamber. The position of the gas outlet baffle is always kept unchanged, and the spring is compressed. The deformed force of the spring can act on the plug sleeve, so that the plug sleeve always has a force away from the gas outlet baffle. When the plug sleeve is pressed on the boss by the spring, the compressed gas can be discharged from the gas discharge hole of the gas outlet baffle, without affecting the generation of the vacuum negative pressure. When it is necessary to break the vacuum, the compressed gas enters the switching chamber. At this time, the compressed gas cannot quickly flow out and is blocked. Since the pressure of the compressed gas is greater than the force exerted by the spring, the plug sleeve is extruded and adheres to the gas outlet baffle. Since the gas discharge hole is located above the end of the plug sleeve, when the plug sleeve adheres to the gas outlet baffle, the gas outlet is also blocked by the plug sleeve. At this time, the compressed gas passes through the gap between the plug sleeve and the diffusion tube, and enters the inside of the diffusion tube from the end of the diffusion tube.

[0030] The outer wall of the plug sleeve is arranged in close contact with the inner wall of the mounting through hole. In the process of being pushed by the compressed gas, the inner wall of the mounting hole plays a guiding role. At least two annular protrusions 18 are arranged on the outer wall of the plug sleeve. The annular protrusions are arranged in close contact with the inner wall of the mounting through hole, so as to reduce the resistance when the plug sleeve moves.

[0031] ​The gas outlet is provided with a silencer 16, and the compressed gas flowing fast can be reduced in noise.

[0032] The plug sleeve and the exhaust port baffle need to be abutted and attached, so a stepped counterbore 17 is arranged on the inner wall of the plug sleeve, the large end of the stepped counterbore faces the exhaust port baffle, and one end of the spring is abutted and arranged on the step portion of the stepped counterbore, so that the spring does not affect the flow of compressed gas while allowing movement between the two.

[0033] A first sealing ring 19 is arranged on the surface of the nozzle, which can effectively fix the installation position of the nozzle and seal the gap between the nozzle and the installation through hole. A second sealing ring 24 is arranged on the surface of the diffusion pipe between the vacuum cavity and the switching cavity, which can seal and separate the vacuum cavity and the switching cavity from each other. Since the compressed gas has a certain pushing force on the diffusion pipe, in order to ensure that the diffusion pipe is not displaced, the number of second sealing rings is set to 2, and a limiting recess 25 is arranged on the diffusion pipe between the two second sealing rings. A fixing hole 26 is arranged on the corresponding shell body, and a pin 27 is arranged in the fixing hole, so as to effectively isolate the switching cavity and the vacuum cavity and not affect the fixing effect. The pin can limit the axial movement of the diffusion pipe, and the installation is convenient and reliable.

[0034] For the vacuum breaking gas inlet, it can be arranged on the same side of the vacuum generating gas inlet, the compressed pipeline connection is ensured to be on the same side, the appearance degree of pipeline layout is improved, and a gas supply channel 20 is arranged between the vacuum breaking gas inlet and the switching cavity. Since it needs to be connected with the switching cavity, the gas supply channel includes a transverse through channel 21 and a longitudinal connecting channel 22, the longitudinal connecting channel is connected with the transverse through channel in the middle, one end of the transverse through channel is connected with the switching cavity, the other end is connected with the outside and internally provided with a plugging piece 23, and the plugging piece can be a steel ball, which is convenient and reliable. An installation lock hole 28 is arranged on the shell body, which is convenient for fixing and using.

[0035] The vacuum generator of the present application can effectively reduce the noise by more than 15% through the arrangement of the silencer, and can realize high beat action through the increase of the vacuum breaking function.

[0036] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present application are within the protection scope of the present application.

Claims

1. A vacuum generator with air blowing function, characterized by, The shell body is provided with a vacuum port, a vacuum generation air supply port, a vacuum breaking air supply port and an air outlet, the vacuum generation air supply port and the air outlet are provided with a mounting through hole, the vacuum port and the mounting through hole are provided with a vacuum cavity, the vacuum breaking air supply port and the mounting through hole are provided with a switching cavity, the mounting through hole is provided with a diffusion pipe, one end of the diffusion pipe is provided with a nozzle and the surface is provided with a flow channel hole communicating with the vacuum cavity, the other end of the diffusion pipe is provided with a gas path switching assembly; The gas path switching assembly includes a plug sleeve and an exhaust port baffle, the exhaust port baffle is fixedly arranged on the air outlet, the exhaust port baffle surface corresponding to the top of the plug sleeve is provided with an exhaust hole, the plug sleeve and the exhaust port baffle are provided with a spring, the plug sleeve is sleeved on the boss at the end of the diffusion pipe, the inner wall of the plug sleeve and the diffusion pipe are provided with a gas supply gap, and the boss is arranged in the switching cavity.

2. The vacuum generator with air blowing function according to claim 1, wherein, The air outlet is provided with a silencer, and the exhaust port baffle is arranged between the silencer and the end of the air outlet.

3. The air-blowing vacuum generator according to claim 1, wherein The inner wall of the plug sleeve is provided with a stepped counterbore, the large end of the stepped counterbore faces the exhaust port baffle, and one end of the spring is abutted on the step of the stepped counterbore.

4. The air-blowing vacuum generator according to claim 1, wherein The outer wall of the plug sleeve is arranged in close contact with the inner wall of the mounting through hole.

5. The air-blowing vacuum generator according to claim 4, wherein The outer wall of the plug sleeve is provided with at least two annular protrusions, and the annular protrusions are arranged in close contact with the inner wall of the mounting through hole.

6. The air-blowing vacuum generator according to claim 1, wherein The surface of the nozzle is provided with a first sealing ring.

7. The air-blowing vacuum generator according to claim 1, wherein The vacuum breaking air supply port and the switching cavity are provided with a gas supply channel, the gas supply channel includes a transverse through channel and a longitudinal connecting channel, the longitudinal connecting channel is connected with the transverse through channel, one end of the transverse through channel is connected with the switching cavity, and the other end is connected with the outside and is provided with a plugging element inside.

8. The air-blowing vacuum generator according to claim 1, wherein The surface of the diffusion pipe between the vacuum cavity and the switching cavity is provided with a second sealing ring.

9. The air-blowing vacuum generator according to claim 8, wherein The number of the second sealing ring is two, the diffusion pipe between the two second sealing rings is provided with a limiting recess, the shell body corresponding to the limiting recess is provided with a fixing hole, and the fixing hole is provided with a pin.

10. The air-blowing vacuum generator according to claim 1, wherein The shell body is provided with a mounting lock hole.

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