CN219691854U - Integrated vacuum generator - Google Patents
Integrated vacuum generator Download PDFInfo
- Publication number
- CN219691854U CN219691854U CN202320421892.7U CN202320421892U CN219691854U CN 219691854 U CN219691854 U CN 219691854U CN 202320421892 U CN202320421892 U CN 202320421892U CN 219691854 U CN219691854 U CN 219691854U
- Authority
- CN
- China
- Prior art keywords
- vacuum
- air supply
- cavity
- air
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003584 silencer Effects 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 230000008602 contraction Effects 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model provides an integrated vacuum generator, which comprises a gas supply device, a pneumatic control device, a vacuum generating device and a vacuum device, wherein the gas supply device is connected with the pneumatic control device; the air supply device comprises an air supply cavity, and one end of the air supply cavity is provided with an air inlet; the pneumatic control device comprises a pneumatic control cavity, wherein the pneumatic control cavity is sequentially provided with a gas supply control chamber, a gas supply control valve core, a return spring, a vacuum breaking pneumatic control valve core and a vacuum breaking control chamber from one end to the other end; the vacuum generating device comprises a vacuum generating cavity, and a nozzle, a speed reducing pipe and a silencer are sequentially arranged from one end to the other end of the vacuum generating cavity; the vacuum device comprises a vacuum cavity, one end of the vacuum cavity is provided with a vacuum port, and an air filtering device is arranged in the vacuum cavity. The utility model has simple and compact structure, low cost, small volume, simple and convenient installation and stable performance.
Description
Technical Field
The utility model relates to the field of vacuum devices, in particular to an integrated vacuum generator.
Background
The vacuum generator is a novel, efficient, clean, economical and small-sized vacuum component for generating negative pressure by utilizing a positive pressure air source, so that the negative pressure can be obtained easily and conveniently at a place where compressed air exists or a place where positive and negative pressures are simultaneously needed in a pneumatic system. Vacuum generators are widely used in the fields of machinery, electronics, packaging, printing, plastics, robots, etc. in industrial automation. The vacuum generator is matched with a sucker to adsorb and carry various materials, and is particularly suitable for adsorbing fragile, soft and thin nonferrous, nonmetallic materials or spherical objects. In such applications, a common feature is low vacuum flow and multiple functional, sensitive, efficient and accurate modes of operation.
However, when the same type of products are used in the industry at present, the problems of complex structure and insufficient stability are found.
Disclosure of Invention
The utility model provides an integrated vacuum generator, which solves the problems of complex structure and insufficient stability in the prior art.
The technical scheme of the utility model is realized as follows:
an integrated vacuum generator comprises an air supply device, an air control device, a vacuum generating device and a vacuum device; the air supply device comprises an air supply cavity, and one end of the air supply cavity is provided with an air inlet; the pneumatic control device comprises a pneumatic control cavity, wherein the pneumatic control cavity is sequentially provided with a gas supply control chamber, a gas supply control valve core, a return spring, a vacuum breaking pneumatic control valve core and a vacuum breaking control chamber from one end to the other end; the vacuum generating device comprises a vacuum generating cavity, and a nozzle, a speed reducing pipe and a silencer are sequentially arranged from one end to the other end of the vacuum generating cavity; the vacuum device comprises a vacuum cavity, one end of the vacuum cavity is provided with a vacuum port, and an air filtering device is arranged in the vacuum cavity; the air supply cavity is communicated with the inlet end of the nozzle through an air supply channel, and is communicated with the vacuum cavity through a vacuum breaking air channel; the air supply channel and the vacuum breaking channel both pass through the pneumatic control cavity; the air supply cavity is respectively communicated with the air supply control chamber and the vacuum breaking control chamber through the air supply control channel and the vacuum breaking control channel, the air supply control channel is connected with an air supply control valve for controlling on-off, the air supply control valve is used for controlling whether to ventilate the air supply control chamber so as to achieve the purpose that the air supply control valve core controls the on-off of the air supply channel, the vacuum breaking control channel is connected with a vacuum breaking control valve for controlling on-off, and the vacuum breaking control valve is used for controlling the on-off of the vacuum breaking air channel by controlling whether to ventilate the vacuum breaking control chamber; the vacuum cavity is communicated with the outlet end of the nozzle through a vacuum air passage, and a one-way conducting piece which is used for conducting the vacuum cavity to the outlet end of the nozzle in a one-way mode is arranged in the vacuum air passage.
Further, the device also comprises an adjusting device for adjusting the size of the section of the output channel of the vacuum breaking air channel.
Further, the adjusting device comprises a vacuum breaking adjusting screw which is radially screwed into the vacuum breaking air passage.
Further, the vacuum breaking device also comprises a controller, wherein the controller is electrically connected with the air supply control valve and the vacuum breaking control valve.
Further, the controller is a single-chip microcomputer controller, and the air supply control valve and the vacuum breaking control valve are both direct-acting electromagnetic valves.
Further, the air supply device, the air control device, the vacuum generating device and the vacuum device are fixedly connected from top to bottom, the air supply control valve and the vacuum breaking control valve are fixed on the upper end face of the air supply device, the controller is fixedly connected to the air supply device, the air control device, the vacuum generating device and the side face of the vacuum device, and the air inlet, the silencer and the vacuum port are all positioned on the side face opposite to the controller.
Further, a guide rail clamping groove is formed in the bottom of the vacuum device, one end of the guide rail clamping groove is a hook groove, and one end of the guide rail clamping groove is a guide rail buckle assembly; the guide rail buckle assembly comprises a movable buckle and a buckle pressing plate, the buckle pressing plate is fixed at the bottom of the vacuum device through a screw, a slot is formed in the buckle pressing plate, the upper surface of the slot is an open end face, an inlet and a contraction opening are respectively formed in two opposite ends of the slot, and a guide post is vertically fixed on the inner bottom surface of the slot; the opposite two ends of the movable buckle are respectively provided with a guide rail clamping groove and a plug, the guide rail clamping groove is used for being matched with the guide rail and clamping the guide rail, the plug is slidably inserted into the slot along the inlet and the shrinkage opening direction, the plug comprises a middle guide plate, the middle guide plate is provided with guide grooves matched with the guide posts, the two sides of the middle guide plate are respectively provided with elastic side pins which can be mutually close to or far away from each other at intervals, the outer side of one end of each elastic side pin, which is far away from the guide rail clamping groove, is provided with an inclined guide angle part or an arc guide angle part, and when the two elastic side pins are positioned in the shrinkage opening, the two elastic side pins bear pressure to be close to generate reverse thrust towards the inlet direction so as to enable the guide rail clamping groove to clamp one side of the guide rail.
Further, the shrinkage opening is an isosceles trapezoid opening with a small outer end and a large inner end.
Further, the adjacent ends of the air supply control valve core and the vacuum breaking air control valve core are respectively provided with a matched jack and a plug rod, the plug rod is slidably sleeved in the jack, the reset spring is sleeved outside the plug rod, the outer diameter of the reset spring is larger than the aperture of the jack, and the inner diameter of the reset spring is smaller than the outer diameter of the air supply control valve core.
Further, the air filtering device is a filter cotton, and the one-way conduction piece is a diaphragm type one-way valve.
The utility model has the beneficial effects that: the utility model has simple and compact structure, low cost, small volume, simple and convenient installation and stable performance; the pneumatic control valve core consisting of the air supply control valve core, the return spring and the vacuum breaking pneumatic control valve core is integrated, and has the advantages of simple structure, convenient installation and stable performance; wherein, the muffler can reduce noise; the air filtering device can filter air, so that the influence of dust in the air on the device is prevented, and the stability is better; the diaphragm type one-way valve is adopted, so that the structure is simple, the cost is low, the resistance is small, and the adaptability is strong; the guide rail buckle component is added, and the integrated vacuum generator is more convenient to install and detach on the guide rail.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
FIG. 3 is a schematic view of the gas circuit during vacuum pumping according to the present utility model;
FIG. 4 is a schematic view of the gas path during vacuum breaking according to the present utility model;
FIG. 5 is a schematic view of a movable buckle according to the present utility model;
fig. 6 is a schematic structural view of a buckle pressing plate in the present utility model.
In the figure: 1-air supply device, 11-air supply chamber, 12-air inlet, 2-air control device, 21-air control chamber, 22-air supply control chamber, 23-air supply control valve core, 231-jack, 24-return spring, 25-vacuum breaking air control valve core, 251-plug, 26-vacuum breaking control chamber, 3-vacuum generating device, 31-vacuum generating chamber, 32-nozzle, 33-speed reducing tube, 34-silencer, 4-vacuum device, 41-vacuum chamber, 42-vacuum port, 43-air filtering device, 44-vacuum air passage, 45-unidirectional conducting piece, 51-air supply passage, 52-vacuum breaking air passage, 61-air supply control passage, 62-vacuum breaking control passage, 71-air supply control valve, 72-vacuum breaking control valve, 81-adjusting device, 82-controller, 9-guide rail clamping groove, 91-hook groove, 92-guide rail clamping assembly, 921-movable clamp, 921 a-guide rail clamping groove, 921 b-plug, 921 c-intermediate guide plate, 921 d-guide groove, 922-clamp plate, a-clamp, 922 b-slot 922, 922-inlet, and d-guide post.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an integrated vacuum generator includes a gas supply device 1, a gas control device 2, a vacuum generating device 3, and a vacuum device 4; the air supply device 1 comprises an air supply cavity 11, and one end of the air supply cavity 11 is provided with an air inlet 12; the pneumatic control device 2 comprises a pneumatic control cavity 21, wherein the pneumatic control cavity is sequentially provided with a gas supply control chamber 22, a gas supply control valve core 23, a return spring 24, a vacuum breaking pneumatic control valve core 25 and a vacuum breaking control chamber 26 from one end to the other end; the vacuum generating device 3 comprises a vacuum generating cavity 31, wherein a nozzle 32, a speed reducing pipe 33 and a silencer 34 are sequentially arranged in the vacuum generating cavity 31 from one end to the other end; the vacuum device 4 comprises a vacuum cavity 41, one end of the vacuum cavity 41 is provided with a vacuum port 42, and an air filtering device 43 is arranged in the vacuum cavity 41; wherein, the air supply cavity 11 is communicated with the inlet end of the nozzle 32 through an air supply passage 51, and the air supply cavity 11 is communicated with the vacuum cavity 41 through a vacuum breaking air passage 52; the air supply passage 51 and the vacuum breaking passage 52 both pass through the pneumatic control chamber 21; the air supply cavity 11 is respectively communicated with the air supply control chamber 22 and the vacuum breaking control chamber 26 through the air supply control channel 61 and the vacuum breaking control channel 62, the air supply control channel 61 is connected with an air supply control valve 71 for controlling the on-off of the air supply control channel 61, the air supply control valve 71 is used for controlling whether to ventilate the air supply control chamber 22 so as to achieve the purpose that the air supply control valve core 23 controls the air supply channel 51 to be on or off, the vacuum breaking control channel 62 is connected with a vacuum breaking control valve 72 for controlling the on-off of the vacuum breaking control channel 62, and the vacuum breaking control valve 72 is used for controlling the on-off of the vacuum breaking air channel 52 through whether to ventilate the vacuum breaking control chamber 26; the vacuum chamber 41 is communicated with the outlet end of the nozzle 32 through a vacuum air passage 44, and a unidirectional conducting piece 45 for unidirectional conducting the vacuum chamber 41 to the outlet end of the nozzle 32 is arranged in the vacuum air passage 44.
Wherein, the adjacent ends of the air supply control valve core 23 and the vacuum breaking pneumatic control valve core 25 are respectively provided with a matched jack 231 and a plug rod 251, the plug rod 251 is slidably sleeved in the jack 231, the return spring 24 is sleeved outside the plug rod 251, the outer diameter of the return spring 24 is larger than the aperture of the jack, and the inner diameter of the return spring is smaller than the outer diameter of the air supply control valve core.
The air filter 43 may be a filter cotton, or may be another filter, and the one-way conduction member 45 may be a diaphragm-type one-way valve.
In some embodiments, an adjustment device 81 for adjusting the size of the cross section of the output channel of the vacuum-breaking airway is also included. Specifically, the adjusting device 81 includes a vacuum breaking adjusting screw radially screwed into the vacuum breaking air passage.
In some embodiments, a controller 82 is also included, the controller 82 being electrically connected to the air supply control valve 71 and the vacuum break control valve 72. Specifically, the controller 82 is a single-chip microcomputer controller or other controllers, and the air supply control valve 71 and the vacuum breaking control valve 72 are both direct-acting solenoid valves.
In some embodiments, the air supply device 1, the air control device 2, the vacuum generating device 3 and the vacuum device 4 are fixedly connected from top to bottom, the air supply control valve 71 and the vacuum breaking control valve 72 are fixed on the upper end surface of the air supply device 1, the controller 82 is fixedly connected to the sides of the air supply device 1, the air control device 2, the vacuum generating device 3 and the vacuum device 4, and the air inlet 12, the silencer 34 and the vacuum port 42 are all located on the side opposite to the controller 82.
Referring to fig. 5 and 6, in some embodiments, a guide rail clamping groove 9 is formed at the bottom of the vacuum device 4, one end of the guide rail clamping groove 9 is a hook groove 91, and one end of the guide rail clamping groove 9 is a guide rail clamping assembly 92; the guide rail buckle assembly 92 comprises a movable buckle 921 and a buckle pressing plate 922, the buckle pressing plate 922 is fixed at the bottom of the vacuum device 4 through a screw, a slot 922a is formed in the buckle pressing plate 922, the upper surface of the slot 922a is an open end face, two opposite ends of the slot 922a are respectively provided with an inlet 922b and a contraction opening 922c, and a guide post 922d is vertically fixed on the inner bottom surface of the slot 922 a; the opposite two ends of the movable buckle 921 are respectively provided with a guide rail clamping groove 921a and a plug 921b, the guide rail clamping groove 921a is used for being matched with a guide rail and clamping the guide rail, the plug 921b is slidably inserted into the slot 922a along the inlet and the shrinking direction, the plug 921b comprises a middle guide plate 921c, the middle guide plate 921c is provided with guide grooves 921d matched with the guide column 922d, two sides of the middle guide plate 921c are respectively provided with elastic side pins 921e at intervals, the elastic side pins 921e can be mutually close or far away, an inclined guide angle part or an arc guide angle part is arranged at the outer side of one end of each elastic side pin 921e, which is far away from the guide rail clamping groove 921a, and when the two elastic side pins 921ee are positioned in the shrinking opening, the two elastic side pins 921e are close to generate reverse thrust towards the inlet direction so as to enable one side of the guide rail clamping groove 921a to clamp the guide rail.
Wherein, the shape of the contraction opening 922c can be an isosceles trapezoid opening with small outer end and large inner end.
Referring to fig. 3, when the vacuum pump is to pump vacuum in operation, the air inlet cavity is in air inlet, the air supply control valve is opened (at the moment, the vacuum breaking control valve is in a closed state), air enters the air supply control chamber through the air supply control channel, then the air pushes the air supply control valve core to slide rightwards (at the moment, the vacuum breaking air control valve core is reset to be static under the action of the reset spring), the air supply channel is opened, the air enters the inlet end of the nozzle from the air inlet cavity, the air is ejected from the outlet of the nozzle at a high speed, negative pressure is generated at the periphery of the outlet, and under the action of the negative pressure, the air at the vacuum port is sucked to the outlet end of the nozzle through the vacuum port, the vacuum cavity, the one-way conducting piece and the vacuum air channel, is mixed with the air ejected from the outlet end of the nozzle and then discharged through the speed reducing pipe and the silencer, so that the vacuum pumping at the vacuum port is realized;
referring to fig. 4, when the utility model is about to break vacuum, the air inlet cavity is air-in, the vacuum breaking control valve is opened (at the moment, the air supply control valve is in a closed state), the air enters the vacuum breaking control chamber through the vacuum breaking control channel, then the air pushes the vacuum breaking air control valve core to slide leftwards (at the moment, the air supply control valve core is reset to be in a static state under the action of the reset spring), the vacuum breaking air channel is opened, and the air enters the vacuum cavity from the air inlet cavity and finally exits from the vacuum port, so that the purpose of breaking vacuum is achieved.
When the guide rail clamping device is to be installed on a guide rail, the guide rail is clamped by the hook groove and the guide rail clamping groove from two sides, the clamping force of the guide rail clamping groove is derived from the cooperation of the elastic side pin end part and the shrinkage opening, and when the elastic side pin end part is positioned in the shrinkage opening, the elastic side pin end part is pressed close to generate reverse thrust in the direction of an inlet for enabling the guide rail clamping groove to clamp one side of the guide rail, so that the guide rail clamping device can be clamped on the guide rail well. When the movable buckle is required to be moved and shifted or detached, one side of the integrated vacuum generator is pressed by force, so that the movable buckle is inserted into the slot deeper, the hook slot is separated from the guide rail, and the vacuum generator can be moved along the length direction of the guide rail to adjust the position or can be directly slid to the end part of the guide rail to be detached.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. An integrated vacuum generator, characterized in that: comprising
The air supply device comprises an air supply cavity, and one end of the air supply cavity is provided with an air inlet;
the pneumatic control device comprises a pneumatic control cavity, wherein the pneumatic control cavity is sequentially provided with a gas supply control chamber, a gas supply control valve core, a return spring, a vacuum breaking pneumatic control valve core and a vacuum breaking control chamber from one end to the other end;
the vacuum generating device comprises a vacuum generating cavity, and the vacuum generating cavity is sequentially provided with a nozzle, a speed reducing pipe and a silencer from one end to the other end;
the vacuum device comprises a vacuum cavity, one end of the vacuum cavity is provided with a vacuum port, and an air filtering device is arranged in the vacuum cavity;
the air supply cavity is communicated with the inlet end of the nozzle through an air supply channel, and is communicated with the vacuum cavity through a vacuum breaking air channel; the air supply channel and the vacuum breaking channel both pass through the pneumatic control cavity;
the air supply cavity is respectively communicated with the air supply control chamber and the vacuum breaking control chamber through the air supply control channel and the vacuum breaking control channel, the air supply control channel is connected with an air supply control valve for controlling the on-off of the air supply control channel, the air supply control valve is used for controlling whether to ventilate the air supply control chamber so as to achieve the purpose that the air supply control valve core is used for controlling the on-off of the air supply channel, the vacuum breaking control channel is connected with a vacuum breaking control valve for controlling the on-off of the vacuum breaking control channel, and the vacuum breaking control valve is used for controlling the on-off of the vacuum breaking air channel through whether to ventilate the vacuum breaking control chamber;
the vacuum cavity is communicated with the outlet end of the nozzle through a vacuum air passage, and a one-way conducting piece which is used for conducting the vacuum cavity to the outlet end of the nozzle in a one-way mode is arranged in the vacuum air passage.
2. An integrated vacuum generator as claimed in claim 1, wherein: the device also comprises an adjusting device for adjusting the size of the section of the output channel of the vacuum breaking air channel.
3. An integrated vacuum generator as claimed in claim 2, wherein: the adjusting device comprises a vacuum breaking adjusting screw which is radially screwed into the vacuum breaking air passage.
4. An integrated vacuum generator as claimed in claim 1, wherein: the vacuum breaking device also comprises a controller, wherein the controller is electrically connected with the air supply control valve and the vacuum breaking control valve.
5. An integrated vacuum generator as set forth in claim 4, wherein: the controller is a singlechip controller, and the air supply control valve and the vacuum breaking control valve are both direct-acting electromagnetic valves.
6. An integrated vacuum generator as set forth in claim 5, wherein: the air supply device, the air control device, the vacuum generating device and the vacuum device are fixedly connected from top to bottom, the air supply control valve and the vacuum breaking control valve are fixed on the upper end face of the air supply device, the controller is fixedly connected to the air supply device, the air control device, the vacuum generating device and the side face of the vacuum device, and the air inlet, the silencer and the vacuum port are all positioned on the side face opposite to the controller.
7. An integrated vacuum generator as set forth in claim 6, wherein: the bottom of the vacuum device is provided with a guide rail clamping groove, one end of the guide rail clamping groove is a hook groove, and one end of the guide rail clamping groove is a guide rail clamping assembly;
the guide rail buckle assembly comprises a movable buckle and a buckle pressing plate, the buckle pressing plate is fixed at the bottom of the vacuum device through a screw, a slot is formed in the buckle pressing plate, the upper surface of the slot is an open end face, an inlet and a contraction opening are respectively formed in two opposite ends of the slot, and a guide post is vertically fixed on the inner bottom surface of the slot; the opposite two ends of the movable buckle are respectively provided with a guide rail clamping groove and a plug, the guide rail clamping groove is used for being matched with the guide rail and clamping the guide rail, the plug is slidably inserted into the slot along the inlet and the shrinkage opening direction, the plug comprises a middle guide plate, the middle guide plate is provided with guide grooves matched with the guide posts, the two sides of the middle guide plate are respectively provided with elastic side pins which can be mutually close to or far away from each other at intervals, the outer side of one end of each elastic side pin, which is far away from the guide rail clamping groove, is provided with an inclined guide angle part or an arc guide angle part, and when the two elastic side pins are positioned in the shrinkage opening, the two elastic side pins bear pressure to be close to generate reverse thrust towards the inlet direction so as to enable the guide rail clamping groove to clamp one side of the guide rail.
8. An integrated vacuum generator as set forth in claim 7, wherein: the shrinkage opening is an isosceles trapezoid opening with a small outer end and a large inner end.
9. An integrated vacuum generator as claimed in claim 1, wherein: the air supply control valve core and the adjacent end of the vacuum breaking air control valve core are respectively provided with a matched jack and a plug rod, the plug rod is slidably sleeved in the jack, the reset spring is sleeved outside the plug rod, the outer diameter of the reset spring is larger than the aperture of the jack, and the inner diameter of the reset spring is smaller than the outer diameter of the air supply control valve core.
10. An integrated vacuum generator as claimed in claim 1, wherein: the air filter device is a filter cotton, and the one-way conduction piece is a diaphragm type one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320421892.7U CN219691854U (en) | 2023-03-08 | 2023-03-08 | Integrated vacuum generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320421892.7U CN219691854U (en) | 2023-03-08 | 2023-03-08 | Integrated vacuum generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219691854U true CN219691854U (en) | 2023-09-15 |
Family
ID=87968995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320421892.7U Active CN219691854U (en) | 2023-03-08 | 2023-03-08 | Integrated vacuum generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219691854U (en) |
-
2023
- 2023-03-08 CN CN202320421892.7U patent/CN219691854U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101035101B1 (en) | Two-stage air-control valve | |
| CN219691854U (en) | Integrated vacuum generator | |
| EP0604070B1 (en) | Magneto-pneumatic timing device | |
| CN210118527U (en) | Energy-saving vacuum control valve | |
| CN112879648B (en) | Air inflation and air exhaust reversing valve structure | |
| CN203376114U (en) | Built-in positive-negative pressure air source for air tightness leak detector | |
| CN220622296U (en) | Multifunctional integrated vacuum generator | |
| CN210660774U (en) | Vacuum generator with pressure sensing switch | |
| CN207598594U (en) | Control device occurs automatically for vacuum | |
| CN111692138A (en) | Integrated vacuum generator and method of use | |
| CN218294459U (en) | Pneumatic control duplex flow amplifier | |
| CN211491592U (en) | Integrated vacuum generator | |
| CN201046554Y (en) | Vibrating mirror correction plate vacuum adsorption fixing device | |
| CN219888852U (en) | Control valve and vacuum suction system | |
| CN201277178Y (en) | Gas circuit integrated controller for mining air compressor | |
| CN217539702U (en) | Pneumatic time-delay valve | |
| CN219733582U (en) | Vacuum generating device | |
| CN202629283U (en) | Pneumatic valve used in vacuum environment | |
| CN219711914U (en) | Pneumatic control energy-saving vacuum generating device | |
| CN220499169U (en) | Vacuum adsorption device | |
| CN2314191Y (en) | Electromagnetic safety valve for household gas source | |
| CN215950400U (en) | Solenoid valve convenient to install | |
| CN215487673U (en) | Bistable double-channel electromagnetic valve | |
| CN220319960U (en) | VK type vacuum generator | |
| CN219452957U (en) | Mechanical diaphragm valve controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |