CN216199324U

CN216199324U - Vacuum generator

Info

Publication number: CN216199324U
Application number: CN202122648017.6U
Authority: CN
Inventors: 嵇学艳; 秦榛森
Original assignee: Amila Automation Technology Suzhou Co ltd
Current assignee: Amila Automation Technology Suzhou Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-04-05
Anticipated expiration: 2031-11-01

Abstract

The utility model relates to a vacuum generator, which comprises a casing, wherein an air inlet pipeline, a Venturi pipeline and a vacuum pipeline which are mutually communicated are arranged in the casing, high-pressure air filled in the air inlet pipeline enters the Venturi pipeline to generate vacuum in the vacuum pipeline, the casing is also provided with an air circuit board with at least 6 air circuits formed on the surface, two air circuits are a group of corresponding electromagnetic valves, at least three groups of air circuit matched electromagnetic valves are arranged on the air circuit board and are respectively used for controlling the air inlet pipeline and the vacuum pipeline to be in a normally closed state, controlling the air inlet pipeline and the vacuum pipeline to be in a normally open state and controlling the connection pipeline between the air inlet pipeline and the vacuum pipeline to be switched on and off, the utility model is provided with the air circuit board with multiple air circuits, can ensure the combination mode of at least two electromagnetic valves, when the electromagnetic valves need to be replaced, only the electromagnetic valves need to be dismounted to replace, and the air circuits of another group of the electromagnetic valves reserved in advance are realigned, simple and practical, faster and cost-saving.

Description

Vacuum generator

Technical Field

The utility model relates to a vacuum generator, and belongs to the technical field of vacuum equipment.

Background

Vacuum elements are widely used in many fields such as electronics, semiconductor element assembly, automobile assembly, automatic handling machines, light industrial machines, food machines, medical machines, printing machines, plastic product machines, packaging machines, forging machines, and robots as a means for realizing automation by using vacuum pressure as a power source.

The vacuum generator has two types, vacuum pump and vacuum generator. The vacuum pump is a machine for pumping gas, wherein a suction inlet forms negative pressure, an exhaust outlet is directly communicated with the atmosphere, and the pressure ratio of two ends is very large. The vacuum generator is a pneumatic element which utilizes the flow of compressed air to form a certain vacuum degree, and compared with a vacuum pump, the vacuum generator has the advantages of simple structure, small volume, light weight, low price, convenient installation, easy combination with a matching set, quick generation and release of vacuum, suitability for intermittent work with small flow and suitability for scattered use.

The conventional vacuum generator has two modes, namely an initial state is a vacuum state, and an initial state is an off state, the internal structures of the two modes of the vacuum generator are different, the two modes of the vacuum generator are required to be purchased conventionally, and the use cost is high for large-scale use.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: to overcome the above problems, a vacuum generator capable of switching an initial state is provided.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a vacuum generator, includes the casing, be provided with air inlet pipeline, venturi way and the vacuum line that communicate each other in the casing, behind the high-pressure gas that fills in the air inlet pipeline got into venturi way produce the vacuum in the vacuum line, still be provided with the gas circuit board of 6 at least gas circuits of surface shaping on the casing, two gas circuits set up a solenoid valve for a set of correspondence, set up three gas circuit cooperation solenoid valves of group at least on the gas circuit board, be used for respectively controlling air inlet pipeline and vacuum line and be in normally closed state, control air inlet pipeline and vacuum line and be in the break-make of connecting line between normally open state and the control air inlet pipeline and the vacuum line.

Preferably, the gas circuit board is provided with a mounting plate, and the mounting plate is provided with a first electromagnetic valve and a second electromagnetic valve.

Preferably, the first solenoid valve and the second solenoid valve are two normally open solenoid valves.

Preferably, the first electromagnetic valve is a normally open electromagnetic valve, and the second electromagnetic valve is a normally closed electromagnetic valve.

Preferably, a first piston is arranged on the air inlet pipeline, a second piston is arranged on a connecting pipeline between the air inlet pipeline and the vacuum pipeline, a third piston is arranged on the vacuum pipeline, the first electromagnetic valve controls the on-off of the first piston, and the second electromagnetic valve simultaneously controls the on-off of the second piston and the third piston.

Preferably, the top end and the middle part of the third piston are respectively communicated with a disconnection gas circuit and a connection gas circuit, the upper end of the disconnection gas circuit is communicated with the first electromagnetic valve through the gas circuit board, the tail end of the disconnection gas circuit is communicated with the top end of the third piston, the connection gas circuit is communicated with the gas inlet pipeline, and the upper end of the connection gas circuit is communicated with the gas inlets of the first electromagnetic valve and the second electromagnetic valve.

Preferably, the cut-off air passage and the cut-on air passage pass through two sides of the venturi tube passage through annular air passages, and the annular air passages are air passages formed between grooves formed in the shell of the venturi tube passage and the shell.

Preferably, the housing is an aluminum alloy housing.

The utility model has the beneficial effects that: the utility model is provided with the gas path board with a plurality of gas paths, the gas paths are carved on the gas path board in a notching way and are communicated through the upper and lower through holes, one gas path is formed by one gas path groove and the through holes at two ends, the solenoid valve is connected with the gas paths in the vacuum generator, more than 6 gas paths are arranged to ensure the combination way of at least two solenoid valves, when the solenoid valve needs to be replaced, only the solenoid valve needs to be detached for replacement, and the reserved gas paths of another group of solenoid valves are realigned, thus the utility model is simple, practical, faster and saves cost.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a cross-sectional view of one embodiment of the present invention (NC state);

FIG. 2 is a schematic representation of one embodiment of the present invention (NO state);

fig. 3 is a top view of one embodiment of the present invention.

The labels in the figure are: 1-shell, 2-air inlet pipeline, 3-venturi pipeline, 4-vacuum pipeline, 5-second electromagnetic valve, 6-first electromagnetic valve, 7-mounting plate, 8-air channel plate, 9-first piston, 10-second piston, 11-third piston, 12-cut-off air channel, 13-cut-on air channel, 14-annular air channel, 15-third piston top air cavity, 16-third piston middle air cavity and 17-connecting pipeline.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Example 1

The utility model as shown in fig. 1 discloses a vacuum generator, which comprises a shell 1, wherein an air inlet pipeline 2, a venturi pipeline 3 and a vacuum pipeline 4 which are mutually communicated are arranged in the shell 1, high-pressure air filled in the air inlet pipeline 2 enters the venturi pipeline 3 to generate vacuum in the vacuum pipeline 4, the venturi pipeline 3 adopts a pipeline which accords with the venturi effect, high-pressure air flow quickly passes through the venturi pipeline 3 and quickly extracts air in the vacuum pipeline 4 to generate vacuum, the tail end of the venturi pipeline 3 is an exhaust end, the high-pressure air quickly passes through and then is exhausted out of the vacuum generator, the shell 1 is also provided with an air channel plate 8 with at least 6 air channels formed on the surface, two air channels are correspondingly provided with an electromagnetic valve in a group, the air channel plate 8 is provided with at least three groups of air channel matched electromagnetic valves which are respectively used for controlling the air inlet pipeline 2 and the vacuum pipeline 4 to be in a normally closed state, The air inlet pipeline 2 and the vacuum pipeline 4 are controlled to be in a normally open state and the connection pipeline 17 between the air inlet pipeline 2 and the vacuum pipeline 4 is controlled to be switched on and off, in a preferred embodiment, the air channel plate 8 is provided with the mounting plate 7, the mounting plate 7 is provided with the first electromagnetic valve 6 and the second electromagnetic valve 5, as shown in figure 3, when the air-conditioning system is actually used, only two electromagnetic valves are arranged, but the normally closed electromagnetic valve and the normally open electromagnetic valve are of two structures, the air channels are different, two vacuum generators are needed in reality, and the use cost of an enterprise is increased, the air channel plate 8 with multiple air channels is arranged, the air channels are carved on the air channel plate 8 in a notching mode and are communicated through upper and lower through holes, one air channel is formed by one air channel groove and through holes at two ends, the air channels inside the electromagnetic valves and the vacuum generators are connected, more than 6 air channels are arranged to ensure the combination mode of at least two electromagnetic valves, when the electromagnetic valve needs to be replaced, the electromagnetic valve only needs to be detached for replacement, and the gas circuit of another set of the electromagnetic valve reserved in advance is realigned, so that the electromagnetic valve is simple, practical, faster and faster, and the cost is saved.

Example 2

On the basis of embodiment 1, as shown in fig. 1, a first piston 9 is arranged on the air inlet pipeline 2, a second piston 10 is arranged on a connecting pipeline 17 between the air inlet pipeline 2 and the vacuum pipeline 4, a third piston 11 is arranged on the vacuum pipeline 4, the first electromagnetic valve 6 controls the on-off of the first piston 9, and the second electromagnetic valve 5 simultaneously controls the on-off of the second piston 10 and the third piston.

In a preferred embodiment, the top end and the middle of the third piston 11 are respectively communicated with a disconnection gas path 12 and a connection gas path 13, the upper end of the disconnection gas path 12 is communicated with the second electromagnetic valve 5 through the gas path plate 8, the tail end of the disconnection gas path is communicated with the third piston top end gas chamber 15, the connection gas path 13 is communicated with the gas inlet pipeline 2, the upper end of the connection gas path 13 is communicated with the gas inlets of the first electromagnetic valve 6 and the second electromagnetic valve 5, the connection gas path 13 is communicated with the third piston middle gas chamber 16, when the second electromagnetic valve 5 is in an open state, high-pressure gas enters the third piston top end gas chamber 15 through the disconnection gas path 12 to eject the third piston downwards and block the third piston, so that the venturi pipeline 3 is disconnected from the vacuum pipeline 4.

In the preferred embodiment, disconnection gas circuit 12 and switch-on gas circuit 13 all pass through annular gas circuit 14 the both sides of venturi 3, annular gas circuit 14 is the shaping is in the gas circuit that forms between recess on the shell of venturi 3 and casing 1, because venturi 3 wholly is circular, and annular gas circuit 14 passes through from venturi 3's both sides, nevertheless not manage the intercommunication with venturi, annular gas circuit 14 next door preferred is provided with the sealing ring.

In a preferred embodiment, the first piston 9 is disposed at a communication position between the air inlet pipeline 2 and the connecting pipeline 17, the connecting pipeline 17 is connected to a vacuum port on the housing 1 in addition to the air inlet pipeline 2 and the vacuum pipeline 4, when the first piston 9 is closed, the connecting pipeline 17 is blocked, the air inlet pipeline 2 is open, when the first piston 9 is opened, the high-pressure gas in the air inlet pipeline 2 is discharged from the connecting pipeline 17, and the high-pressure gas in the connecting pipeline 17 enters the vacuum pipeline 4 and then is discharged from the vacuum port, so that the function of quickly releasing the vacuum state as described in embodiment 4 can be realized.

First solenoid valve 6 and second solenoid valve 5 are two normally open solenoid valves respectively, in this embodiment, when setting up two normally open solenoid valves, first piston 9 closure downwards is controlled to first solenoid valve 6 connecting line 17, and high-pressure gas passes through from first piston 9, but second piston 10 closure is controlled to second solenoid valve 5, and high-pressure gas can't reach venturi pipeline 3 through second piston 10, and second solenoid valve 5 normally opens still controls third piston 11 closure, blocks the intercommunication between venturi pipeline 3 and the vacuum pipeline 4, therefore, in this embodiment, when putting through high-pressure gas for the vacuum generator, the initial is in and stops to produce vacuum state, for NC stop state, just produce the vacuum after controlling second solenoid valve 5 closure, adsorb article.

Example 3

On the basis of embodiment 1, as shown in fig. 2, a first piston 9 is arranged on the air inlet pipeline 2, a second piston 10 is arranged on a connecting pipeline 17 between the air inlet pipeline 2 and the vacuum pipeline 4, a third piston 11 is arranged on the vacuum pipeline 4, the first electromagnetic valve 6 controls the on-off of the first piston 9, and the second electromagnetic valve 5 simultaneously controls the on-off of the second piston 10 and the third piston 11.

In a preferred embodiment, the top end and the middle part of the third piston 11 are respectively communicated with a disconnection air path 12 and a connection air path 13, the upper end of the disconnection air path 12 is communicated with the second electromagnetic valve 5 through the air path plate 8, the tail end of the disconnection air path is communicated with the top end of the third piston 11, the connection air path 13 is communicated with the air inlet pipeline 2, and the upper end of the connection air path 13 is communicated with the air inlets of the first electromagnetic valve 6 and the second electromagnetic valve 5.

In a preferred embodiment, the cut-off air passage 12 and the cut-on air passage 13 both pass through two sides of the venturi tube 3 through an annular air passage 14, and the annular air passage 14 is an air passage formed between a groove formed on the outer shell of the venturi tube 3 and the housing 1.

The first solenoid valve 6 is a normally open solenoid valve, the second solenoid valve 5 is a normally closed solenoid valve, in this embodiment, the first solenoid valve 6 controls the first piston 9 to close the connecting pipeline 17 downwards, the high-pressure gas passes through the first piston 9, but the second solenoid valve 5 controls the second piston 10 to open, the high-pressure gas reaches the venturi pipe 3 through the second piston 10, and the second solenoid valve 5 is normally closed and also controls the third piston 11 to open, the space between the venturi pipe 3 and the vacuum pipe 4 is unblocked, and the high-pressure gas can generate vacuum in the vacuum pipe 4 after passing through the venturi pipe 3, so in this embodiment, when the high-pressure gas is connected to the vacuum generator, the high-pressure gas is initially in a vacuum generating state, which is an N0 operating state, the high-pressure gas can be connected to perform adsorption operation, and the adsorption is disconnected after the second solenoid valve 5 is controlled to open, in this embodiment 3 and embodiment 2 correspond to products in two states respectively, one is an NC state for starting to stop, the other is an NO state for starting to operate, and only the second solenoid valve 5 needs to be replaced from the normally open solenoid valve to the normally closed solenoid valve, so the most preferable embodiment of the present invention is that the gas path plate 8 is provided with 6 gas paths, which respectively correspond to two gas paths of the normally open solenoid valve (the second solenoid valve 5), two gas paths of the normally closed solenoid valve (the second solenoid valve 5), and two gas paths of the normally open solenoid valve (the first solenoid valve 6) in sequence.

Example 4

On the basis of the above embodiment, after the high-pressure gas in the connecting pipeline 17 enters the vacuum pipeline 4, the vacuum state in the vacuum pipeline 4 is broken, in a conventionally used vacuum generator, the vacuum breaking can be realized by stopping supplying the vacuum gas or cutting off the pipeline supplying the vacuum gas, but in order to better enable the adsorbed object to be separated from the suction cup, the connecting pipeline 17 is added to directly fill the high-pressure gas into the vacuum pipeline 4, and the first electromagnetic valve 6 is used for controlling, so that the vacuum can be broken more quickly, and the object can be separated from the suction cup quickly.

In a preferred embodiment, the casing 1 is an aluminum alloy casing 1, and other lighter metal casings 1 can be used.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a vacuum generator, a serial communication port, includes the casing, be provided with air inlet pipeline, venturi way and the vacuum line of mutual intercommunication in the casing, the high-pressure gas who fills in the air inlet pipeline gets into behind the venturi way produce the vacuum in the vacuum line, still be provided with the gas circuit board of 6 at least gas circuits of surface shaping on the casing, two gas circuits set up a solenoid valve for a set of correspondence, set up three gas circuit cooperation solenoid valves of group on the gas circuit board at least, be used for respectively controlling air inlet pipeline and vacuum line and be in normally closed state, control air inlet pipeline and vacuum line and be in the break-make of connecting line between normally open state and the control air inlet pipeline and the vacuum line.

2. The vacuum generator as claimed in claim 1, wherein a mounting plate is provided on the gas circuit board, the mounting plate mounting the first solenoid valve and the second solenoid valve.

3. The vacuum generator of claim 2, wherein the first and second solenoid valves are two normally open solenoid valves.

4. The vacuum generator as claimed in claim 2, wherein said first solenoid valve is a normally open solenoid valve and said second solenoid valve is a normally closed solenoid valve.

5. The vacuum generator as claimed in any one of claims 2 to 4, wherein a first piston is disposed on the air inlet line, a second piston is disposed on a connecting line between the air inlet line and the vacuum line, a third piston is disposed on the vacuum line, the first solenoid valve controls the on/off of the first piston, and the second solenoid valve controls the on/off of the second piston and the third piston simultaneously.

6. The vacuum generator according to claim 5, wherein the top end and the middle portion of the third piston are respectively communicated with a disconnection gas path and a connection gas path, the upper end of the disconnection gas path is communicated with the second electromagnetic valve through the gas path plate, the tail end of the disconnection gas path is communicated with the top end of the third piston, the connection gas path is communicated with the gas inlet pipeline, and the upper end of the connection gas path is communicated with the gas inlets of the first electromagnetic valve and the second electromagnetic valve.

7. The vacuum generator as claimed in claim 6, wherein the turn-off air passage and the turn-on air passage both pass through both sides of the venturi passage through annular air passages formed between a groove formed on a housing of the venturi passage and the housing.

8. The vacuum generator of claim 1, wherein the housing is an aluminum alloy housing.