CN109681477B - Timing device for vacuum generator - Google Patents
Timing device for vacuum generator Download PDFInfo
- Publication number
- CN109681477B CN109681477B CN201910149313.6A CN201910149313A CN109681477B CN 109681477 B CN109681477 B CN 109681477B CN 201910149313 A CN201910149313 A CN 201910149313A CN 109681477 B CN109681477 B CN 109681477B
- Authority
- CN
- China
- Prior art keywords
- timing
- cavity
- air
- air inlet
- shell
- 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
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Vacuum Packaging (AREA)
Abstract
The invention discloses a timing device for a vacuum generator, which comprises a shell, wherein an air inlet cavity A, an air outlet cavity A, a timing cavity B and an air guide cavity C are arranged in the shell, the air guide cavity C is communicated with the timing cavity B, a one-way air inlet valve D is arranged between the air inlet cavity A and the air guide cavity C, the one-way air inlet valve D comprises a one-way valve seat, a one-way valve spring and a one-way valve core, and the one-way valve spring is arranged between the one-way valve seat and the one-way valve core; the timing switch mechanism G is arranged in the shell and comprises a timing cylinder, a push head and a timing spring which are matched are arranged in the timing cylinder, and the outer end face of the push head is communicated with the timing cavity B; a throttle valve is arranged between the timing cavity B and the exhaust cavity A, and a vent hole is arranged on the throttle valve. The invention has the advantages that: reasonable and compact structure, and is used and operated.
Description
Technical Field
The invention relates to the technical field of vacuum generator manufacturing, in particular to a timing device for a 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 industrial automation in the fields of machinery, electronics, packaging, printing, plastics, robots, etc.
The existing vacuum generator system breaks the vacuum environment by natural leakage by closing the vacuum generation path, and the speed is relatively slow. The partial vacuum generator has good vacuum retention performance because of soft material of the object adsorbed by the vacuum port, can not automatically leak, and an external switching valve is needed to jet air to break the vacuum in the vacuum environment; in addition, the existing vacuum breaking structure has no timing function, and automatic control cannot be realized through setting of the timing function so as to meet the requirement of timing breaking vacuum environment, so that the structure of the existing vacuum breaking structure needs to be further improved.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and provides the timing device for the vacuum generator, which has reasonable and compact structure, is used and operated and can be integrated in the vacuum generator.
The technical scheme adopted for solving the technical problems is as follows:
the timing device for the vacuum generator comprises a shell, wherein an air inlet cavity A, an air outlet cavity A, a timing cavity B and an air guide cavity C are arranged in the shell, the air guide cavity C is communicated with the timing cavity B, a one-way air inlet valve D is arranged between the air inlet cavity A and the air guide cavity C, the one-way air inlet valve D comprises a one-way valve seat, a one-way valve spring and a one-way valve core, and the one-way valve spring is arranged between the one-way valve seat and the one-way valve core; the timing switch mechanism G is arranged in the shell and comprises a timing cylinder, a push head and a timing spring which are matched are arranged in the timing cylinder, and the outer end face of the push head is communicated with the timing cavity B; a throttle valve is arranged between the timing cavity B and the exhaust cavity A, and a vent hole is arranged on the throttle valve.
The optimized technical measures also comprise:
the shell is internally provided with an adjusting mechanism for adjusting the air leakage speed of the throttle valve, the adjusting mechanism comprises an adjusting sleeve and an adjusting rod, the adjusting rod is in threaded connection with the adjusting sleeve, and the adjusting rod is provided with a conical adjusting needle which is matched with the throttle valve.
The outer end of the adjusting rod extends out of the adjusting sleeve, and the outer end of the adjusting rod is connected with an adjusting nut in a threaded mode.
A first O-shaped ring is arranged between the adjusting rod and the shell.
The push head is internally fixed with a push rod, and the front end of the timing spring is sleeved outside the push rod.
A Y-shaped sealing ring is arranged between the push head and the inner wall of the timing cylinder; a second O-shaped ring is arranged between the rear end of the push head and the timing cylinder.
And a third O-shaped ring is arranged between the timing cylinder and the shell.
The front end of the valve core of the one-way valve is provided with a conical head matched with the valve port, and the root of the conical head is provided with a fourth O-shaped ring.
A fifth O-shaped ring is arranged between the check valve seat and the shell.
An end cover is assembled on the shell, and the end cover is fixed with the shell through screws.
The timing device for the vacuum generator is reasonable and compact in structure, when vacuum occurs, the air inlet cavity A1 and the air outlet cavity A2 are used for supplying air, the one-way air inlet valve D is opened, air pressure enters the timing cavity B through the air guide cavity C, the timing spring is compressed to enable the timing switch mechanism G to be opened for completing inflation, timing starting is performed, the air pressure of the air inlet cavity A1 and the air outlet cavity A2 is 0 when vacuum occurs and closed, the one-way air inlet valve D is closed, compressed air in the timing cavity B is exhausted through the throttle valve, and when the air in the timing cavity B is exhausted, the timing switch mechanism G is closed and timing is completed, so that a timing function is realized. The timing device is integrated on the vacuum generator, and can realize the timing breaking of the vacuum state.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded schematic view of the present invention;
FIG. 3 is a schematic cross-sectional view of an initial state of the present invention;
FIG. 4 is a schematic diagram of a second cross-sectional structure of the initial state of the present invention;
FIG. 5 is a schematic cross-sectional view of the inflated state of the present invention;
FIG. 6 is a schematic diagram of a cross-sectional structure of the inflated state of the present invention II;
FIG. 7 is a schematic cross-sectional structural view of the deflated state of the present invention;
FIG. 8 is a schematic diagram of a cross-sectional structure of the deflated state of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The present invention is schematically illustrated in figures 1 to 8,
wherein the reference numerals are as follows: the air inlet cavity A1, the air outlet cavity A2, the timing cavity B, the air guide cavity C, the one-way air inlet valve D, the timing switch mechanism G, the shell 1, the end cover 11, the screw 12, the one-way valve seat 21, the fifth O-shaped ring 21a, the one-way valve spring 22, the one-way valve core 23, the conical head 23a, the fourth O-shaped ring 23B, the timing cylinder 31, the third O-shaped ring 31a, the push head 32, the Y-shaped sealing ring 32a, the timing spring 33, the push rod 34, the second O-shaped ring 35, the throttle valve 4, the air leakage hole 4a, the adjusting sleeve 51, the adjusting rod 52, the conical adjusting needle 52a, the first O-shaped ring 52B and the adjusting nut 53.
As shown in figures 1 to 8 of the drawings,
the timing device for the vacuum generator comprises a shell 1, wherein an air inlet cavity A1, an air outlet cavity A2, a timing cavity B and an air guide cavity C are arranged in the shell 1, the air guide cavity C is communicated with the timing cavity B, a one-way air inlet valve D is arranged between the air inlet cavity A1 and the air guide cavity C, the one-way air inlet valve D comprises a one-way valve seat 21, a one-way valve spring 22 and a one-way valve core 23, and the one-way valve spring 22 is arranged between the one-way valve seat 21 and the one-way valve core 23; the timing switch mechanism G is arranged in the shell 1, the timing switch mechanism G comprises a timing cylinder 31, a push head 32 and a timing spring 33 which are matched are arranged in the timing cylinder 31, and the outer end surface of the push head 32 is communicated with the timing cavity B; a throttle valve 4 is provided between the timing chamber B and the exhaust chamber A2, and a vent hole 4a is provided in the throttle valve 4.
In the embodiment, an adjusting mechanism for adjusting the air leakage speed of the throttle valve 4 is arranged in the shell 1, the adjusting mechanism comprises an adjusting sleeve 51 and an adjusting rod 52, the adjusting rod 52 is in threaded connection with the adjusting sleeve 51, and a conical adjusting needle 52a matched with the throttle valve 4 is arranged on the adjusting rod 52.
In the embodiment, the outer end of the adjusting rod 52 extends out of the adjusting sleeve 51, and the outer end of the adjusting rod 52 is screwed with an adjusting nut 53.
In an embodiment, a first O-ring 52b is arranged between the adjusting rod 52 and the housing 1.
The opening size of the throttle valve 4 can be adjusted by adjusting the screwing depth of the adjusting mechanism adjusting rod 52, so that the speed of air leakage is adjusted, and the aim of adjusting the timing length is fulfilled; the provision of the adjustment nut 53 not only facilitates the rotation of the adjustment lever 52, but also limits the maximum screwing depth of the adjustment lever 52.
In the embodiment, a push rod 34 is fixed in the push head 32, and the front end of the timing spring 33 is sleeved outside the push rod 34. The rear end of the timing spring 33 abuts against the end cap 11.
In the embodiment, a Y-shaped sealing ring 32a is arranged between the push head 32 and the inner wall of the timing cylinder 31; a second O-ring 35 is provided between the rear end of the push head 32 and the timing cylinder 31.
In an embodiment, a third O-ring 31a is arranged between the timing cylinder 31 and the housing 1.
In the embodiment, the front end of the check valve core 23 is provided with a conical head 23a matched with the valve port, and the root of the conical head 23a is provided with a fourth O-shaped ring 23b.
The conical head 23a cooperates with the conical valve port and ensures its tightness with a fourth O-ring 23b.
In the embodiment, a fifth O-ring 21a is arranged between the check valve seat 21 and the housing 1.
In the embodiment, the shell 1 is provided with an end cover 11, and the end cover 11 is fixed with the shell 1 through a screw 12.
Working principle:
the timing device for the vacuum generator is characterized in that an air inlet cavity A1, an air outlet cavity A2, a timing cavity B and an air guide cavity C are arranged in a shell 1, the air guide cavity C is communicated with the timing cavity B, a one-way air inlet valve D is arranged between the air inlet cavity A1 and the air guide cavity C, a throttle valve 4 is arranged between the timing cavity B and the air outlet cavity A2, an adjusting mechanism for adjusting the air release speed of the throttle valve 4 is arranged in the shell 1, a timing switch mechanism G is further arranged in the shell 1, and the timing cavity B is matched with the timing switch mechanism G. The unidirectional air inlet valve D, the regulating mechanism and the timing switch mechanism G are arranged side by side, so that the timing device has a more compact structure and a small volume.
The timing device for the vacuum generator is divided into 3 states: i.e., an initial state, an inflated state, and a deflated state.
As shown in fig. 3 to 4, in the initial state, the air pressure in the intake chamber A1 and the exhaust chamber A2 is 0, and the one-way intake valve D and the timing switching mechanism G are closed.
As shown in fig. 5 to 6, in the inflated state, when the vacuum generator is in vacuum, the air inlet cavity A1 and the air outlet cavity A2 are used for supplying air, the air pressure in the air inlet cavity A1 pushes the check valve core 23 to compress the check valve spring 22, so that the check air inlet valve D is opened, the air inlet cavity A1 and the air guide cavity C are communicated, and the air in the air inlet cavity A1 enters the timing cavity B through the air guide cavity C; with the rise of the air pressure in the timing cavity B, the push head 32 is pushed to compress the timing spring 33 to move rightwards until the push head 32 reaches the limiting position, the timing switch mechanism G is opened, the inflation is completed, and the timing is ready.
As shown in fig. 7 to 8, in the deflation state, the vacuum generator is vacuum-closed, the air pressure of the air inlet cavity A1 and the air outlet cavity A2 is 0, the one-way air inlet valve D is closed, the air inlet cavity A1 and the air guide cavity C are disconnected, the compressed air in the timing cavity B is discharged to the air outlet cavity A2 through the throttle valve 4, the push head 32 is gradually reset under the action of the timing spring 33 along with the discharge of the compressed air in the timing cavity B until the air in the timing cavity B is exhausted, and the timing switch mechanism G is closed, so that the timing is completed. The timing device resumes the initial state.
The preferred embodiments of this invention have been described so far that various changes or modifications may be made by one of ordinary skill in the art without departing from the scope of this invention.
Claims (8)
1. The timing device for the vacuum generator comprises a shell (1) and is characterized in that: an air inlet cavity A1, an air outlet cavity A2, a timing cavity B and an air guide cavity C are arranged in the shell (1), the air guide cavity C is communicated with the timing cavity B, a one-way air inlet valve D is arranged between the air inlet cavity A1 and the air guide cavity C, the one-way air inlet valve D comprises a one-way valve seat (21), a one-way valve spring (22) and a one-way valve core (23), and the one-way valve spring (22) is arranged between the one-way valve seat (21) and the one-way valve core (23); the timing switch mechanism G is arranged in the shell (1), and comprises a timing cylinder (31), wherein a push head (32) and a timing spring (33) which are matched are arranged in the timing cylinder (31), and the outer end surface of the push head (32) is communicated with the timing cavity B; a throttle valve (4) is arranged between the timing cavity B and the exhaust cavity A2, and a gas leakage hole (4 a) is arranged on the throttle valve (4); an adjusting mechanism for adjusting the air leakage speed of the throttle valve (4) is arranged in the shell (1), the adjusting mechanism comprises an adjusting sleeve (51) and an adjusting rod (52), the adjusting rod (52) is in threaded connection with the adjusting sleeve (51), and a conical adjusting needle (52 a) matched with the throttle valve (4) is arranged on the adjusting rod (52); the outer end of the adjusting rod (52) extends out of the adjusting sleeve (51), and the outer end of the adjusting rod (52) is in threaded connection with an adjusting nut (53); in the initial state, the air pressure of the air inlet cavity A1 and the air outlet cavity A2 is 0, and the unidirectional air inlet valve D and the timing switch mechanism G are closed; when the vacuum generator is in an inflated state, air is supplied to the air inlet cavity A1 and the air outlet cavity A2, air pressure in the air inlet cavity A1 pushes the check valve core (23) to compress the check valve spring (22), so that the check air inlet valve D is opened, the air inlet cavity A1 and the air guide cavity C are communicated, and air in the air inlet cavity A1 enters the timing cavity B through the air guide cavity C; with the rise of the air pressure in the timing cavity B, the push head (32) is pushed to compress the timing spring (33) to move rightwards until the push head (32) reaches a limiting position, and the timing switch mechanism G is opened to complete the inflation.
2. The timing device for a vacuum generator according to claim 1, wherein: a first O-shaped ring (52 b) is arranged between the adjusting rod (52) and the shell (1).
3. A timing device for a vacuum generator according to claim 2, characterized in that: the push head (32) is internally fixed with a push rod (34), and the front end of the timing spring (33) is sleeved outside the push rod (34).
4. A timing device for a vacuum generator according to claim 3, wherein: a Y-shaped sealing ring (32 a) is arranged between the push head (32) and the inner wall of the timing cylinder (31); a second O-shaped ring (35) is arranged between the rear end of the push head (32) and the timing cylinder (31).
5. The timing device for a vacuum generator according to claim 4, wherein: a third O-shaped ring (31 a) is arranged between the timing cylinder (31) and the shell (1).
6. The timing device for a vacuum generator according to claim 5, wherein: the front end of the check valve core (23) is provided with a conical head (23 a) matched with the valve port, and the root of the conical head (23 a) is provided with a fourth O-shaped ring (23 b).
7. The timing device for a vacuum generator according to claim 6, wherein: a fifth O-shaped ring (21 a) is arranged between the check valve seat (21) and the shell (1).
8. The timing device for a vacuum generator according to claim 7, wherein: an end cover (11) is assembled on the shell (1), and the end cover (11) is fixed with the shell (1) through a screw (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149313.6A CN109681477B (en) | 2019-02-28 | 2019-02-28 | Timing device for vacuum generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910149313.6A CN109681477B (en) | 2019-02-28 | 2019-02-28 | Timing device for vacuum generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109681477A CN109681477A (en) | 2019-04-26 |
| CN109681477B true CN109681477B (en) | 2023-09-15 |
Family
ID=66197082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910149313.6A Active CN109681477B (en) | 2019-02-28 | 2019-02-28 | Timing device for vacuum generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109681477B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551998A (en) * | 1978-10-13 | 1980-04-16 | Miyoutoku:Kk | Fluid feeder |
| US5320497A (en) * | 1991-06-26 | 1994-06-14 | Smc Kabushiki Kaisha | Vacuum feeding apparatus |
| JP2001124000A (en) * | 1999-08-18 | 2001-05-08 | Nippon Pisuko:Kk | Vacuum breaking unit for vacuum generator and vacuum generator |
| CN1415863A (en) * | 2001-11-01 | 2003-05-07 | 韩国气压系统有限公司 | Vacuum generator |
| JP2007056746A (en) * | 2005-08-24 | 2007-03-08 | Nippon Pisuko:Kk | Vacuum generator |
| CN101358613A (en) * | 2007-08-01 | 2009-02-04 | Smc株式会社 | Vacuum generating unit |
| KR101630577B1 (en) * | 2015-06-17 | 2016-06-15 | 이우승 | Air reducing on-off valve for vaccum ejector pump |
| CN105937542A (en) * | 2015-03-03 | 2016-09-14 | 特拉华资本形成公司 | Override for an automatic release vacuum device |
| CN209523925U (en) * | 2019-02-28 | 2019-10-22 | 星宇电子(宁波)有限公司 | A kind of vacuum generator timing means |
-
2019
- 2019-02-28 CN CN201910149313.6A patent/CN109681477B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551998A (en) * | 1978-10-13 | 1980-04-16 | Miyoutoku:Kk | Fluid feeder |
| US5320497A (en) * | 1991-06-26 | 1994-06-14 | Smc Kabushiki Kaisha | Vacuum feeding apparatus |
| JP2001124000A (en) * | 1999-08-18 | 2001-05-08 | Nippon Pisuko:Kk | Vacuum breaking unit for vacuum generator and vacuum generator |
| CN1415863A (en) * | 2001-11-01 | 2003-05-07 | 韩国气压系统有限公司 | Vacuum generator |
| JP2007056746A (en) * | 2005-08-24 | 2007-03-08 | Nippon Pisuko:Kk | Vacuum generator |
| CN101358613A (en) * | 2007-08-01 | 2009-02-04 | Smc株式会社 | Vacuum generating unit |
| CN105937542A (en) * | 2015-03-03 | 2016-09-14 | 特拉华资本形成公司 | Override for an automatic release vacuum device |
| KR101630577B1 (en) * | 2015-06-17 | 2016-06-15 | 이우승 | Air reducing on-off valve for vaccum ejector pump |
| CN209523925U (en) * | 2019-02-28 | 2019-10-22 | 星宇电子(宁波)有限公司 | A kind of vacuum generator timing means |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109681477A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3955901A (en) | Membrane pump | |
| KR100415785B1 (en) | Smooth exhaust valve | |
| CN100582533C (en) | Pneumatic control proportioning time-delay change valve | |
| WO2011158695A1 (en) | Time-delay valve | |
| MY139515A (en) | Vacuum ejector pumps | |
| AR041506A1 (en) | CLOSING VALVE | |
| AU2031601A (en) | A valve device for controlled supply of a pressure fluid | |
| CN109681477B (en) | Timing device for vacuum generator | |
| JP3245791B2 (en) | Signal generator | |
| KR20050053339A (en) | Vacuum-generating unit | |
| CN209523925U (en) | A kind of vacuum generator timing means | |
| CN208719027U (en) | A kind of vacuum generator | |
| US4465090A (en) | Air relay | |
| CN109707872B (en) | Vacuum breaking device for vacuum generator | |
| CN209524115U (en) | A kind of vacuum generator vacuum breakdown device of vacuum | |
| CN112032120B (en) | Hierarchical linkage control system with pneumatic time-delay reversing module | |
| CN107837470B (en) | Air supply valve of integrated expiratory valve of small volume | |
| CN207246133U (en) | Integrated type vacuum generator | |
| CN201277178Y (en) | Gas circuit integrated controller for mining air compressor | |
| CN110645388B (en) | Electromagnetic valve capable of automatically adjusting internal and external pressure balance | |
| CN216519884U (en) | Vacuum regulator | |
| CN213176006U (en) | Gun closing delay stopping device and high-pressure cleaning machine | |
| TW202041332A (en) | Pressure display mechanism of pneumatic tool being provided with a base, an actuating member, an elastic component and a display region | |
| CN113864153B (en) | Energy-saving and energy-saving vacuum generator | |
| CN220706091U (en) | Quick reaction type vacuum generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |