CN111692138A - Integrated vacuum generator and method of use - Google Patents
Integrated vacuum generator and method of use Download PDFInfo
- Publication number
- CN111692138A CN111692138A CN201910201139.5A CN201910201139A CN111692138A CN 111692138 A CN111692138 A CN 111692138A CN 201910201139 A CN201910201139 A CN 201910201139A CN 111692138 A CN111692138 A CN 111692138A
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- vacuum
- valve
- cavity
- valve core
- core cavity
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
- F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/005—Vacuum work holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/48—Control
- F04F5/52—Control of evacuating pumps
Abstract
The invention provides an integrated vacuum generator and a using method thereof, comprising an air supply device, a vacuum generating device and a control device; the control device comprises a vacuum pressure gauge, a vacuum pilot valve, a destructive pilot valve, a valve core and a valve body; the vacuum generating device comprises a built-in vacuum generating pipe and a vacuum cavity; the valve body is provided with a valve core cavity and a valve inner channel; the valve core is arranged in the valve core cavity; the gas supply device is communicated with the valve core cavity; the valve core cavity is communicated with the vacuum pilot valve and the damage pilot valve through an in-valve channel. According to the invention, the pressure measured by the vacuum pilot valve is compared with the preset pressure interval by the vacuum pressure gauge with the energy-saving function, and then the on-off state of the vacuum pilot valve is switched, so that the pressure in the vacuum cavity is kept in the set range, the adsorbed object is prevented from falling, and the consumption of positive pressure air is greatly reduced.
Description
Technical Field
The invention relates to a vacuum component, in particular to an integrated vacuum generator and a using method thereof.
Background
The vacuum generator is a novel, efficient, clean, economic and small vacuum component which utilizes a positive pressure air source to generate negative pressure, so that the negative pressure can be easily and conveniently obtained in a place with compressed air or a place needing the positive and negative pressure in a pneumatic system. Vacuum generators are widely used in the fields of machinery, electronics, packaging, printing, plastics, robotics, etc. in industrial automation. The traditional purpose of the vacuum generator is that the sucker is matched to adsorb and carry various materials, and the vacuum generator is particularly suitable for adsorbing fragile, soft and thin nonferrous and nonmetallic materials or spherical objects. In the application, the common characteristic is that the vacuum flow is not high, multiple functions are complete, and the sensitive, efficient and accurate working mode is realized.
The invention patent with publication number CN103016424B discloses an integrated vacuum generator, which comprises a gas supply device, a control device and a vacuum generating device, wherein the control device is arranged in a main gas passage between the vacuum generating device and the gas supply device, the control device is used for controlling the on/off of the main gas passage, the vacuum generator further comprises a vacuum breaking device and an exhaust cavity, the vacuum breaking device is communicated with the main gas passage through a vacuum breaking gas passage, and the exhaust cavity is communicated with the vacuum generating device; the vacuum generating device comprises an air supply cavity, a nozzle and at least two vacuum generating cavities, wherein the air supply cavity is communicated with the main air passage, and the at least two vacuum generating cavities are arranged side by side and are communicated with each other; the vacuum generating cavity close to one side of the air supply cavity is communicated with the air supply cavity through a nozzle, and the vacuum generating cavity close to one side of the exhaust cavity is communicated with the exhaust cavity through a spray pipe; the vacuum generating cavities are connected with one end of a vacuum cavity through one-way valves, and the other end of the vacuum cavity is provided with a vacuum port; the air supply port of the main air passage, the vacuum port and the exhaust port of the exhaust cavity are sequentially arranged on one side of the vacuum generator; the control device comprises a control panel, a control valve, an air supply switch and a destruction switch, wherein the control valve comprises a destruction electromagnetic valve and an air supply electromagnetic valve, the air supply switch and the destruction switch are respectively communicated with the main air passage through a first air dividing passage and a second air dividing passage, the air supply electromagnetic valve and the destruction electromagnetic valve are respectively and correspondingly arranged on the first air dividing passage and the second air dividing passage and respectively and correspondingly control the connection/disconnection of the first air dividing passage and the second air dividing passage, and the air supply electromagnetic valve and the destruction electromagnetic valve respectively and correspondingly control the connection/disconnection of the air supply switch and the destruction switch by controlling the connection/disconnection of the first air dividing passage and the second air dividing passage. This patent is through setting up air feed switch and destruction switch on main gas passage for the break/make of control main gas passage and the break/make of vacuum destruction air flue, and air feed switch and destruction switch are respectively through first branch air flue and second branch air flue and main gas flue intercommunication, and first branch air flue and second branch air flue then are respectively by air feed solenoid valve and destroy its break/make of solenoid valve control, still be equipped with throttling arrangement on the vacuum destruction air flue, control the air flow in the vacuum destruction air flue through adjusting throttling arrangement, with this speed of adjusting the vacuum destruction.
However, the above-mentioned invention still has the following problems in the integrated vacuum generator: when the object is adsorbed, although the one-way valve is arranged, the air leakage cannot be avoided, and the object is required to be prevented from falling down by supplying air all the time, so that a large amount of air flow is wasted.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to provide an integrated vacuum generator.
The integrated vacuum generator provided by the invention comprises a gas supply device, a vacuum generating device and a control device; the control device comprises a vacuum pressure gauge, a vacuum pilot valve, a destructive pilot valve, a valve core and a valve body; the vacuum generating device comprises a built-in vacuum generating pipe and a vacuum cavity;
the valve body is provided with a valve core cavity and a valve inner channel; the valve core is arranged in the valve core cavity; the gas supply device is communicated with the valve core cavity; the valve core cavity is communicated with the vacuum pilot valve and the damage pilot valve through an in-valve channel;
when the pressure in the vacuum cavity measured by the vacuum pressure gauge is lower than the lower limit value of a preset pressure interval, the vacuum pilot valve is in a conducting state, and the channel in the valve is communicated with the built-in vacuum generating pipe through the vacuum pilot valve; when the pressure in the vacuum cavity measured by the vacuum pressure gauge is higher than the upper limit value of the preset pressure interval, the vacuum pilot valve is in an off state, and the channel in the valve is communicated with the vacuum cavity of the vacuum generating device through the destroying pilot valve.
Preferably, the control means comprises a first main spool, a second main spool and a spring;
the valve core cavity is provided with a first valve core cavity, a second valve core cavity and a spring cavity which are communicated in sequence; the first main spool is located in the first spool cavity, the second main spool is located in the second spool cavity, the spring is located in the spring cavity, and the spring is arranged between the first main spool and the second main spool; the first main valve core divides the first valve core cavity into a first valve core cavity A, a first valve core cavity B and a first valve core cavity C; the second valve core divides the second valve core cavity into a second valve core cavity A, a second valve core cavity B and a second valve core cavity C, and the first valve core cavity C is communicated with the second valve core cavity C through a spring cavity;
the air supply device is communicated with the first valve core cavity C and the second valve core cavity C; the first spool chamber C and the first spool chamber a141 communicate with the valve inner passage.
Preferably, the in-valve passage includes a first control passage, a second control passage, a first intake passage, and a second intake passage;
the first valve core cavity A is communicated with the vacuum pilot valve through a first control air passage, and the second valve core cavity A is communicated with the destruction pilot valve through a second control air passage; the vacuum pilot valve is communicated with the first valve core cavity C or/and the second valve core cavity C through the first air inlet channel, and the destroying pilot valve is communicated with the first valve core cavity C or/and the second valve core cavity C through the second air inlet channel.
Preferably, the air supply device comprises an air inlet, an air supply channel, a first air supply channel and a second air supply channel;
the air supply channel is communicated with the first valve core cavity C through a first air supply channel; the gas supply channel is communicated with the second valve core cavity C through a second gas supply channel.
Preferably, the vacuum generating device further comprises a vacuum air supply channel and a one-way valve;
the built-in vacuum generating tube is provided with at least one positive pressure air inlet and at least one vacuum interface; the positive pressure air inlet is communicated with the first valve core cavity B through a vacuum air supply channel, and the vacuum interface is communicated with the vacuum cavity through a one-way valve.
Preferably, the vacuum cavity is provided with a vacuum port; and a filter is arranged at the opening of the vacuum port.
Preferably, the control device further comprises a destruction regulating valve for regulating the magnitude of the gas flow in the second gas intake passage.
Preferably, the vacuum chamber communicates with the second spool chamber B through a vacuum breaking air passage.
Preferably, the exhaust port of the built-in vacuum generating tube is provided with a silencer.
The use method of the integrated vacuum generator provided by the invention comprises the following steps:
step S1: measuring the pressure of the vacuum cavity through the vacuum pressure gauge;
step S2: when the measured pressure in the vacuum cavity is lower than the lower limit value of a preset pressure interval, controlling the vacuum pilot valve to be conducted;
step S3: and when the measured pressure in the vacuum cavity is higher than the lower limit value of the preset pressure interval, controlling the vacuum pilot valve to be switched off.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the pressure measured by the vacuum pilot valve is compared with a preset pressure interval according to the pressure value by the vacuum pressure gauge with the energy-saving function, and then the on-off state of the vacuum pilot valve is switched, so that the pressure in the vacuum cavity is kept in a set range, an adsorbed object is prevented from falling off, and the consumption of positive pressure air is greatly reduced;
2. the vacuum pilot valve, the destroying regulating valve, the filter and the silencer are integrated into a whole, so that multiple functions of the vacuum generator can be realized;
3. according to the invention, a closed-loop feedback system is formed among the vacuum pressure gauge, the vacuum pilot valve and the damage pilot valve, so that the pressure in the vacuum cavity is accurately regulated.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of an integrated vacuum generator according to the present invention.
In the figure:
1 is a vacuum pressure gauge; 2 is a vacuum pilot valve; 3 is a destroy pilot valve; 4 is a first main valve core; 5 is a second main valve core; 6 is a spring; 7 is a first control air passage; 8 is a second control air passage; 9 is a first air inlet channel; 10 is a second air inlet channel; 11 is an air inlet; 12 is a gas supply channel; 121 is a first gas supply channel; 122 is a second gas supply channel; 13 is a built-in vacuum generating tube; 14 is a first valve core cavity; 141 is a first spool chamber a; 142 is a first spool chamber B; 143 is a first spool chamber C; 15 is the second spool chamber; 151 is the second spool chamber a; 152 is the second spool chamber B; 153 is the second spool chamber C; 21 is a vacuum air supply channel; 22 is a silencer; 23 is a one-way valve; 24 is a vacuum cavity; 25 is a breaking regulating valve; 26 is a vacuum port; and 27 is a filter.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, the integrated vacuum generator provided by the invention comprises a gas supply device, a vacuum generation device and a control device; the control device comprises a vacuum pressure gauge 1, a vacuum pilot valve 2, a destructive pilot valve 3, a valve core and a valve body; the vacuum generating device comprises a built-in vacuum generating pipe 13 and a vacuum cavity 24;
the valve body is provided with a valve core cavity and a valve inner channel; the valve core is arranged in the valve core cavity; the gas supply device is communicated with the valve core cavity; the valve core cavity is communicated with the vacuum pilot valve 2 and the destruction pilot valve 3 through an in-valve channel;
when the pressure in the vacuum cavity 24 measured by the vacuum pressure gauge 1 is lower than the lower limit value of the preset pressure interval, the vacuum pilot valve 2 is switched on, and the channel in the valve is communicated with the built-in vacuum generating pipe 13 through the vacuum pilot valve 2; when the pressure in the vacuum cavity 24 measured by the vacuum pressure gauge 1 is higher than the upper limit value of the preset pressure interval, the vacuum pilot valve 2 is disconnected, and the channel in the valve is communicated with the vacuum cavity 24 of the vacuum generating device through the destroying pilot valve 3.
In the embodiment, the pressure in the vacuum chamber 24 is measured by the vacuum pressure gauge with the energy-saving function, and then after the pressure in the vacuum chamber 24 is compared with the upper limit value and the lower limit value of the preset pressure interval, the on-off of the vacuum pilot valve and the destruction pilot valve 3 is controlled, so that the pressure in the vacuum chamber 24 can be kept in the set range, the adsorbed object is prevented from falling off, and the consumption of the positive pressure air can be greatly reduced because the pressure in the vacuum chamber 24 is controlled within the upper limit value of the preset pressure interval.
Said control means comprise a first main spool 4, a second main spool 5 and a spring 6; the valve core cavity is provided with a first valve core cavity 14, a second valve core cavity 15 and a spring cavity which are communicated in sequence; the first main spool 4 is located in a first spool chamber 14, the second main spool 5 is located in a second spool chamber 15, the spring 6 is located in a spring chamber, and the spring 6 is disposed between the first main spool 4 and the second main spool 5.
In one embodiment, the positive pressure gas can drive the first main valve element 4 or the second main valve element 5 to move so as to compress the spring 6, so that the valve inner channel is communicated with the vacuum cavity 24 or the built-in vacuum generating pipe 13, and the on-off of the valve body is conveniently controlled.
In an embodiment, the first main spool 4 divides the first spool chamber 14 into a first spool chamber a141, a first spool chamber B142, and a first spool chamber C143; the second main spool 5 divides the second spool chamber 15 into a second spool chamber a151, a second spool chamber R152, and a second spool chamber C153, and the first spool chamber C143 and the second spool chamber C153 communicate with each other through a spring chamber.
In this embodiment, in the initial state, the first spool chamber a141, the first spool chamber B142, and the first spool chamber C143 are not communicated with each other due to the partition of the first main spool 4, but when the positive pressure gas drives the first main spool 4 to perform the compression spring movement, the first spool chamber a141, the first spool chamber B142, and the first spool chamber C143 are communicated with each other; in the initial state, the second spool chamber a151, the second spool chamber B152, and the second spool chamber C153 are not communicated with each other due to the partition of the second main spool 5, but the second spool chamber a151, the second spool chamber B152, and the second spool chamber C153 are communicated with each other when the positive pressure gas drives the second main spool 5 to perform the compression spring movement.
In one embodiment, one end of first main spool 4 is connected to one end of spring 6, one end of second main spool 5 is connected to the other end of spring 6, and spring 6, first main spool 4 and second main spool 5 are located on the same axis.
In one embodiment, the in-valve passages include a first control air passage 7, a second control air passage 8, a first intake air passage 9, and a second intake air passage 10;
the first valve core cavity A141 is communicated with the vacuum pilot valve 2 through a first control air passage 7, and the second valve core cavity A151 is communicated with the destroying pilot valve 3 through a second control air passage 8; the vacuum pilot valve 2 is communicated with the first spool cavity C143 or/and the second spool cavity C153 through the first air inlet channel 9, and the destruction pilot valve 3 is communicated with the first spool cavity C143 or/and the second spool cavity C153 through the second air inlet channel 10.
In one embodiment, the air supply means includes an air inlet 11, an air supply channel 12, a first air supply channel 121, and a second air supply channel 122;
the air supply passage 12 is communicated with the first spool chamber C143 through the first air supply passage 121, and the air supply passage 12 is communicated with the second spool chamber C153 through the second air supply passage 122.
In one embodiment, the vacuum generating device further comprises a vacuum air supply channel 21 and a one-way valve 23; the built-in vacuum generating tube 13 is provided with at least one positive pressure air inlet and at least one vacuum interface; the positive pressure air inlet is communicated with the first valve core cavity B142 through a vacuum air supply channel 21, and the vacuum port is communicated with the vacuum cavity 24 through a one-way valve 23.
In one embodiment, the vacuum chamber 24 is communicated with the second valve core chamber B152 through a vacuum breaking air passage, the vacuum pressure gauge 1 is used for monitoring the pressure in the vacuum chamber 24, and the vacuum pressure gauge 1 is electrically connected with the vacuum pilot valve 2.
In one embodiment, the vacuum pressure gauge 1 controls the on or off of the vacuum pilot valve 2 according to the pressure in the vacuum cavity 24; when the pressure in the vacuum chamber 24 is lower than the lower limit value of the preset pressure interval, the vacuum pressure gauge 1 sends an opening instruction to the vacuum pilot valve 2 to control the vacuum pilot valve 2 to be switched on, and when the pressure in the vacuum chamber 24 is higher than the lower limit value of the preset pressure interval, the vacuum pressure gauge 1 sends a closing instruction to the vacuum pilot valve 2 to control the vacuum pilot valve 2 to be switched off.
In a modification of this embodiment, the on-off control of the vacuum pilot valve 2 may also be performed by a manual force in accordance with the value of the vacuum pressure gauge 1.
In an embodiment, the control device further comprises a destructive control valve 25, and the destructive control valve 25 is used for adjusting the air flow in the second air inlet channel 10, so that the vacuum degree control of the vacuum cavity 24 is facilitated, and the vacuum degree of the vacuum cavity 24 is prevented from being reduced too fast.
In one embodiment, the vacuum chamber 24 is provided with a filter 27 at the front of the vacuum port 26 for filtering the gas entering into the vacuum generation chamber to prevent foreign substances from entering into the vacuum generation chamber and blocking the internal pipeline; the exhaust port of the built-in vacuum generating tube 13 is provided with a silencer 22 for reducing noise of the exhausted compressed air and reducing sound pollution.
When the integrated vacuum generator provided by the invention is used, firstly, the vacuum pilot valve 2 is opened after being electrified, positive pressure gas flow in the gas supply channel 12 not only enters the first gas inlet channel 9 through the first gas supply channel 121 and the first valve core cavity C143, but also enters the first gas inlet channel 9 through the second gas supply channel 122, the second valve core cavity C153, the spring cavity and the first valve core cavity C143, and further enters the first valve core cavity a141 after passing through the vacuum pilot valve 2 and the first control gas channel 7; at this time, the positive pressure gas flow flowing into the first valve core chamber a141 pushes the first main valve core 4, so that the spring 6 is contracted, at this time, the first main valve core 4 enables the first valve core chamber B142 and the first valve core chamber a141 to be communicated, so that the positive pressure gas can enter the first valve core chamber B142 from the first valve core chamber a141, then enter the built-in vacuum generating pipe 13 through the vacuum gas supply channel 21, finally be exhausted after being silenced by the silencer 22, so that the vacuum chamber 24 generates vacuum, and the vacuum port 26 is used for sucking a workpiece;
when the workpiece reaches the target station, the vacuum pilot valve 2 is powered off and closed, the air-breaking pilot valve 3 is opened, at the moment, the first main valve element 4 is restored to the initial position under the action of the spring 6, and the positive pressure air flow in the first valve core cavity C143 and the second valve core cavity C153 sequentially passes through the second air inlet channel 10, the air-breaking pilot valve 3 and the second control air passage 8 and then enters the second valve core cavity a151, at this time, the positive pressure air flow pushes the second main valve core 5, allowing the spring 6 to contract, and the second main spool 5 now connects the second spool chamber R152 and the second spool chamber C153, positive pressure gas can enter the second spool chamber R152 from the second spool chamber C153, then enters the vacuum chamber 24 through a vacuum breaker duct (which is not in the same vertical plane as the section shown in fig. 1 and is therefore not shown) so that the workpiece is lowered, and the air flow in the second air inlet passage 10 is regulated by the breaker regulating valve 25.
When the integrated vacuum generator provided by the invention adsorbs a workpiece, the saving of an air source can be effectively realized, the vacuum pressure gauge 1, the vacuum pilot valve 2 and the one-way valve 23 form a closed loop feedback system, the vacuum pressure gauge 1 directly controls the vacuum pilot valve 2, because the vacuum pressure gauge 1 has a preset upper limit value and a preset lower limit value of vacuum pressure, when the pressure in the vacuum cavity 24 is lower than the lower limit value of a preset pressure interval, the vacuum pressure gauge 1 sends an opening instruction to the vacuum pilot valve 2 to control the vacuum pilot valve 2 to be switched on, and when the pressure in the vacuum cavity 24 is higher than the lower limit value of set pressure, the vacuum pressure gauge 1 sends a closing instruction to the vacuum pilot valve 2 to control the vacuum pilot valve 2 to be switched off, so that a vacuum generating device is closed, and the loss of the; the one-way valve 23 ensures that the vacuum chamber 24 is in a sealed state after the vacuum generating device is closed, so that the vacuum value in the vacuum chamber 24 cannot fall.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. An integrated vacuum generator is characterized by comprising an air supply device, a vacuum generating device and a control device; the control device comprises a vacuum pressure gauge, a vacuum pilot valve, a destructive pilot valve, a valve core and a valve body; the vacuum generating device comprises a built-in vacuum generating pipe and a vacuum cavity;
the valve body is provided with a valve core cavity and a valve inner channel; the valve core is arranged in the valve core cavity; the gas supply device is communicated with the valve core cavity; the valve core cavity is communicated with the vacuum pilot valve and the damage pilot valve through an in-valve channel;
when the pressure in the vacuum cavity measured by the vacuum pressure gauge is lower than the lower limit value of a preset pressure interval, the vacuum pilot valve is in a conducting state, and the channel in the valve is communicated with the built-in vacuum generating pipe through the vacuum pilot valve; when the pressure in the vacuum cavity measured by the vacuum pressure gauge is higher than the upper limit value of the preset pressure interval, the vacuum pilot valve is in an off state, and the channel in the valve is communicated with the vacuum cavity of the vacuum generating device through the destroying pilot valve.
2. The integrated vacuum generator as claimed in claim 1, wherein the control means comprises a first primary spool, a second primary spool, and a spring;
the valve core cavity is provided with a first valve core cavity, a second valve core cavity and a spring cavity which are communicated in sequence; the first main spool is located in the first spool cavity, the second main spool is located in the second spool cavity, the spring is located in the spring cavity, and the spring is arranged between the first main spool and the second main spool; the first main valve core divides the first valve core cavity into a first valve core cavity A, a first valve core cavity B and a first valve core cavity C; the second valve core divides the second valve core cavity into a second valve core cavity A, a second valve core cavity B and a second valve core cavity C, and the first valve core cavity C is communicated with the second valve core cavity C through a spring cavity;
the air supply device is communicated with the first valve core cavity C and the second valve core cavity C; the first spool chamber C and the first spool chamber a141 communicate with the valve inner passage.
3. The integrated vacuum generator as claimed in claim 2, wherein the in-valve passage includes a first control air passage, a second control air passage, a first air intake passage, and a second air intake passage;
the first valve core cavity A is communicated with the vacuum pilot valve through a first control air passage, and the second valve core cavity A is communicated with the destruction pilot valve through a second control air passage; the vacuum pilot valve is communicated with the first valve core cavity C or/and the second valve core cavity C through the first air inlet channel, and the destroying pilot valve is communicated with the first valve core cavity C or/and the second valve core cavity C through the second air inlet channel.
4. The integrated vacuum generator as claimed in claim 2, wherein the gas supply means comprises a gas inlet, a gas supply channel, a first gas supply channel and a second gas supply channel;
the air supply channel is communicated with the first valve core cavity C through a first air supply channel; the gas supply channel is communicated with the second valve core cavity C through a second gas supply channel.
5. The integrated vacuum generator according to claim 2, wherein the vacuum generating device further comprises a vacuum gas supply channel and a one-way valve;
the built-in vacuum generating tube is provided with at least one positive pressure air inlet and at least one vacuum interface; the positive pressure air inlet is communicated with the first valve core cavity B through a vacuum air supply channel, and the vacuum interface is communicated with the vacuum cavity through a one-way valve.
6. The integrated vacuum generator according to claim 1, wherein the vacuum chamber is provided with a vacuum port; and a filter is arranged at the opening of the vacuum port.
7. The integrated vacuum generator as claimed in claim 3, wherein the control means further comprises a destruct regulator valve for regulating the magnitude of gas flow in the second gas inlet passage.
8. The integrated vacuum generator according to claim 2, wherein the vacuum chamber communicates with the second spool chamber B through a vacuum breaking air passage.
9. The integrated vacuum generator as claimed in claim 2, wherein the exhaust port of the built-in vacuum generating tube is provided with a silencer.
10. A method of using the integrated vacuum generator as claimed in any one of claims 1 to 9, comprising the steps of:
step S1: measuring the pressure of the vacuum cavity through the vacuum pressure gauge;
step S2: when the measured pressure in the vacuum cavity is lower than the lower limit value of a preset pressure interval, controlling the vacuum pilot valve to be conducted;
step S3: and when the measured pressure in the vacuum cavity is higher than the lower limit value of the preset pressure interval, controlling the vacuum pilot valve to be switched off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910201139.5A CN111692138A (en) | 2019-03-15 | 2019-03-15 | Integrated vacuum generator and method of use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910201139.5A CN111692138A (en) | 2019-03-15 | 2019-03-15 | Integrated vacuum generator and method of use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111692138A true CN111692138A (en) | 2020-09-22 |
Family
ID=72475429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910201139.5A Pending CN111692138A (en) | 2019-03-15 | 2019-03-15 | Integrated vacuum generator and method of use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111692138A (en) |
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2019
- 2019-03-15 CN CN201910201139.5A patent/CN111692138A/en active Pending
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