CN208261432U - Culvert type vacuum generator and its vacuum tubings - Google Patents
Culvert type vacuum generator and its vacuum tubings Download PDFInfo
- Publication number
- CN208261432U CN208261432U CN201820493085.5U CN201820493085U CN208261432U CN 208261432 U CN208261432 U CN 208261432U CN 201820493085 U CN201820493085 U CN 201820493085U CN 208261432 U CN208261432 U CN 208261432U
- Authority
- CN
- China
- Prior art keywords
- fluid channel
- loop
- fluid
- inlet
- vacuum
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of vacuum tubings of culvert type vacuum generator, the fluid channel of perforation is formed in vacuum tubings, the diameter of fluid channel is incrementally increased from centre to both ends, main-inlet, loop head and loop exit are offered on the tube wall of vacuum tubings, main-inlet is located at the smallest part of diameter on fluid channel, loop head is located at the front side of main-inlet, and loop exit is located at the rear side of main-inlet, and loop exit is connected with loop head by duct.It drives fluid to inject from main-inlet, flows to the outlet end of fluid channel, fluid is driven to generate pressure difference by Venturi effect, so that the arrival end of fluid channel sucks fluid, be discharged after fluid channel from the outlet end of fluid channel.A part of fluid in fluid channel comes back in fluid channel via loop exit, duct and loop head, to enhance pressure difference.The utility model further discloses a kind of culvert type vacuum generator using above-mentioned vacuum tubings.
Description
Technical field
The utility model relates to automobile manufacturing fields, more specifically to the mould punching work in automobile manufacturing process
The device of skill.
Background technique
In automobile manufacturing process, need to carry out punching press for the plate of automobile, punching press is generally carried out by mould punching
Production.During mould punching, very tiny clast is often generated in trimming process, these tiny clasts are in punching press
Part can raise when mobile, be sticky in its surface, and when arriving next sequence punching press, stamping parts surface can be forced out trace,
Influence stamping parts surface quality.
In the prior art, a kind of mode for solving this problem is that thick yellow oil is applied near the edge of a knife, the viscous glutinous clast cut.
But thick yellow oil during the work time can be lossy, needs constantly to coat thick yellow oil again, therefore seems comparatively laborious.
The mode that another kind solves is that the clast raised is absorbed using ordinary vacuum tube.Fig. 1 is disclosed using vacuum tube
Come absorb clast scheme structural schematic diagram.Refering to what is shown in Fig. 1, stamping die includes cutter 102 and bottom knife 104, punching
Casting die 106 is placed between cutter 102 and bottom knife 104.Cutter 102 and 104 crisscross motion of bottom knife are to stamping parts 106
Punching press is carried out, clast can be generated in the staggeredly trimming position of cutter 102 and bottom knife 104.The arrival end of vacuum generator 108
Extend hose 110, hose is directed at the staggeredly trimming position of cutter 102 and bottom knife 104.Drive fluid, i.e. compressed air
Pipeline 112 is connected to vacuum generator 108.After being passed through compressed air, pressure difference is generated in vacuum generator 108, hose 110
Entrance suction airflow.Clast follows air-flow to be inhaled into hose 110, is then discharged again from the outlet of vacuum generator 108.Using
The effect that vacuum tube absorbs clast is mainly determined by the suction of vacuum tube.In general, the suction of ordinary vacuum tube shows slightly insufficient,
Therefore the effect absorbed is not ideal enough, still will appear the case where part clast raises.
Utility model content
The utility model is directed to a kind of vacuum generator of pull of vacuum with enhancing.
An embodiment according to the present utility model proposes a kind of vacuum tubings of culvert type vacuum generator, vacuum tubings
The interior fluid channel for forming perforation, the diameter of fluid channel are incrementally increased from centre to both ends, are opened up on the tube wall of vacuum tubings
There are main-inlet, loop head and loop exit, main-inlet is located at the smallest part of diameter on fluid channel, and loop head is located at master
The front side of entrance, loop exit are located at the rear side of main-inlet, and loop exit is connected with loop head by duct.Drive fluid from
Main-inlet injection, flows to the outlet end of fluid channel, and fluid is driven to generate pressure difference by Venturi effect, so that fluid channel
Arrival end sucks fluid, is discharged after fluid channel from the outlet end of fluid channel.A part of fluid warp in fluid channel
It is come back in fluid channel by loop exit, duct and loop head, to enhance pressure difference.
In one embodiment, vacuum tubings are in truncated cone-shaped, and fluid channel is anisodiametric cylindrical channel, vacuum tube
Body and fluid channel central axis having the same.
In one embodiment, the tube wall of main-inlet inclination perforation vacuum tubings, it is logical that main-inlet is directed toward fluid from outside to inside
The outlet end in road, along the circumference of vacuum tubings, the elongated central line of several main-inlets converges in described several main-inlets
On mandrel line；The tube wall of loop head inclination perforation vacuum tubings, loop head are directed toward the outlet end of fluid channel from outside to inside,
For several loop heads along the circumference of vacuum tubings, the elongated central line of several loop heads converges at the central axis
On；The tube wall of loop exit inclination perforation vacuum tubings, loop exit is directed toward the outlet end of fluid channel from inside to outside, several to follow
Ring exports the circumference along vacuum tubings, and the elongated central line of several loop exits converges on the central axis.
In one embodiment, duct ring assemblies are cased with outside vacuum tubings, the duct of annular are offered on duct ring assemblies,
The duct connection loop exit and loop head of annular.
An embodiment according to the present utility model proposes a kind of culvert type vacuum generator, comprising: vacuum tubings, duct
Ring assemblies, head end shield and tail portion end shield.Form the fluid channel of perforation in vacuum tubings, the diameter of fluid channel from centre to
Both ends incrementally increase, and main-inlet, loop head and loop exit are offered on the tube wall of vacuum tubings, and main-inlet is logical positioned at fluid
The smallest part of diameter on road, loop head are located at the front side of main-inlet, and loop exit is located at the rear side of main-inlet, loop exit
It is connected with loop head by duct.Duct ring assemblies cover outside vacuum tubings, offered on duct ring assemblies driving fluid into
The duct of mouth and annular, annular duct connection loop exit and loop head, driving fluid inlet are connected to main-inlet.Head
End shield and tail portion end shield, head end shield and tail portion end shield are spliced to form shell end shield, and shell end shield accommodates the vacuum tube through assembling
It is provided with hole on body and duct ring assemblies, head end shield and tail portion end shield, is respectively aligned to arrival end and the outlet end of vacuum tubings.It drives
Dynamic fluid is injected via driving fluid inlet from main-inlet, flows to the outlet end of fluid channel, drives fluid by Venturi effect
Pressure difference is generated, so that the arrival end of fluid channel sucks fluid, is discharged after fluid channel from the outlet end of fluid channel,
A part of fluid in fluid channel comes back in fluid channel via loop exit, the duct of annular and loop head, with
Enhance pressure difference.
In one embodiment, which further includes gap baffle ring, and gap baffle ring is covered in vacuum tubings
On, between head end shield and duct ring assemblies.
In one embodiment, vacuum tubings are cylindrical, and fluid channel is anisodiametric cylindrical channel, vacuum tube
Body and fluid channel central axis having the same.
In one embodiment, the tube wall of main-inlet inclination perforation vacuum tubings, it is logical that main-inlet is directed toward fluid from outside to inside
The outlet end in road, for several main-inlets along the circumference of vacuum tubings, the elongated central line of several main-inlets converges at central axis
On line.The tube wall of loop head inclination perforation vacuum tubings, loop head is directed toward the outlet end of fluid channel from outside to inside, several
Along the circumference of vacuum tubings, the elongated central line of several loop heads converges on the central axis loop head.It follows
Ring outlet-inclined impeller vane penetrates through the tube wall of vacuum tubings, and loop exit is directed toward the outlet end of fluid channel from inside to outside, several to recycle
The elongated central line of the circumference of opening's edge vacuum tubings, several loop exits converges on the central axis.
The utility model vacuum generator and vacuum tubings have circulation of tail gas structure, can be by one in the gas of discharge
Divide and be reintroduced back in air inlet by duct, form closed cycle, enhance pressure difference by increasing throughput, to enhance vacuum suction
Power.
Detailed description of the invention
The above and other feature of the utility model, property and advantage will pass through with reference to the accompanying drawings and examples
It describes and becomes apparent, identical appended drawing reference always shows identical feature in the accompanying drawings, in which:
Fig. 1 discloses the structural schematic diagram for absorbing the scheme of clast using vacuum tube in the prior art.
The structure that Fig. 2 discloses the vacuum pipe of the culvert type vacuum generator of an embodiment according to the present utility model is shown
It is intended to.
Fig. 3 a and Fig. 3 b disclose the decomposition texture of the culvert type vacuum generator of an embodiment according to the present utility model
Figure.
Fig. 4 discloses the assembling perspective structure signal of the culvert type vacuum generator of an embodiment according to the present utility model
Figure.
Fig. 5 disclose C-C in Fig. 4 to cross section structure schematic diagram.
Fig. 6 a and Fig. 6 b disclose the assembling structure of the culvert type vacuum generator of an embodiment according to the present utility model
Figure.
Fig. 7 discloses the cross section structure figure of the culvert type vacuum generator of an embodiment according to the present utility model, discloses
Fluid trend.
Specific embodiment
Fig. 2 discloses the structure of the vacuum pipe of the culvert type vacuum generator of an embodiment according to the present utility model
Figure.Refering to what is shown in Fig. 2, the fluid channel of perforation is formed in the vacuum tubings 202 of the culvert type vacuum generator, fluid channel
Diameter is incrementally increased from centre to both ends, forms intermediate small, the big channel design in both ends.In one embodiment, vacuum tubings
202 be in truncated cone-shaped, and fluid channel is anisodiametric cylindrical channel.Fluid channel intersects the central axis in vacuum tubings 202
On line.Main-inlet 221, loop head 222 and loop exit 223 are offered on the tube wall of vacuum tubings 202.Main-inlet 221
It can correspond to the smallest part of diameter on fluid channel.Main-inlet 221 tilts the tube wall for running through vacuum tubings 202.Master enters
Mouthfuls 221 are directed toward the outlet end of fluid channel from outside to inside, i.e. the inlet side of main-inlet 221 on the outside of tube wall, outlet on the inside of tube wall,
The outlet end of outlet direction fluid channel.Fluid is obliquely injected into fluid channel by main-inlet 221.In the implementation of diagram
In example, for several main-inlets 221 along the circumference of vacuum tubings 202, the elongated central line of several main-inlets 221 converges at center
On axis.Loop head 222 is located at the front side of main-inlet 221.The tube wall of the inclination perforation vacuum tubings 202 of loop head 222.It follows
Ring entrance 222 is directed toward the outlet end of fluid channel from outside to inside, i.e., the inlet side of loop head 222 is on the outside of tube wall, and outlet is in pipe
On the inside of wall, outlet is directed toward the outlet end of fluid channel.Fluid is obliquely injected into fluid channel by loop head 222.?
In the embodiment of diagram, circumference of several loop heads 222 along vacuum tubings, the elongated central of several loop heads 222
Line converges on central axis.In the illustrated embodiment, the convergent point of the elongated central line of several loop heads 222 with it is several
The convergent point of the elongated central line of main-inlet 221 is not overlapped, but is overlapped on the central axis of vacuum tubings 202, several to follow
The convergent point of the elongated central line of ring entrance 222 is located at the front side of the convergent point of the elongated central line of several main-inlets 221.Circulation
Outlet 223 is located at the rear side of main-inlet 221.The tube wall of the inclination perforation vacuum tubings 202 of loop exit 223.Loop exit 223 from
It is directed toward the outlet end of fluid channel from inside to outside.That is the inlet side of loop exit 223 is on the inside of tube wall, and outlet is on the outside of tube wall, outlet
It is directed toward the outlet end of fluid channel.Fluid is obliquely discharged except fluid channel by loop exit 223.In the embodiment of diagram
In, for several loop exits 223 along the circumference of vacuum tubings, the elongated central line of several loop exits 223 converges at center
On axis.The convergence of the elongated central line of the convergent point of the elongated central line of several loop exits 223 and several loop heads 222
The convergent point of the elongated central line of point and several main-inlets 221 is not overlapped, the elongated central line of several loop exits 223
Convergent point is located at the rear side of the convergent point of the elongated central line of several main-inlets 221.In addition, several loop heads 222 and several
The elongated central line of main-inlet 221 is directed towards export direction and extends convergence, and the elongated central line of datacycle outlet 223 is
Extend towards import direction and converges.Loop exit 223 and loop head 222 are connected by duct 241.In one embodiment,
Duct ring assemblies 204 are cased with outside vacuum tubings 202, the duct 241 of annular, annular duct are offered on duct ring assemblies 204
241 connection loop exits 223 and loop head 222.Duct ring assemblies will do it description later.
The working principle of the vacuum tubings is as follows: driving fluid, such as compressed air are injected from main-inlet 221, due to master
Entrance 221 is outlet end that is inwardly angled and being directed toward fluid channel, therefore driving fluid flows to the outlet end of fluid channel.Due to
Fluid channel is intermediate small, the big channel design in both ends and main-inlet 221 is that the smallest position of diameter is arranged on fluid channel
It sets, after running fluid through main-inlet 221 and injecting, pressure difference is generated by Venturi effect, so that the pressure in the middle part of fluid channel
The strong pressure for being less than inlet generates suction so that the arrival end of fluid channel sucks fluid.The fluid of sucking is logical by fluid
It is discharged behind road from the outlet end of fluid channel.During fluid discharge, a part of fluid in fluid channel is via circulation
Outlet 223, duct 241 and loop head 222 come back in fluid channel, form closed cycle, flow into fluid channel
Air-flow increase, pressure difference also enhances, so as to promote suction.
The utility model also proposes a kind of culvert type vacuum generator using above-mentioned vacuum tubings.Fig. 3 a and Fig. 3 b are disclosed
The decomposition chart of the culvert type vacuum generator of an embodiment according to the present utility model.As shown, the culvert type is true
Empty generator includes: vacuum tubings 202, duct ring assemblies 204, head end shield 206, tail portion end shield 208 and gap baffle ring 210.
Vacuum tubings 202 are i.e. above in conjunction with the revealed vacuum tubings of Fig. 2.The fluid of perforation is formed in vacuum tubings 202
The diameter in channel, fluid channel is incrementally increased from centre to both ends.Main-inlet 221 is offered on the tube wall of vacuum tubings 202, is followed
Ring entrance 222 and loop exit 223.Main-inlet 221 is located at the smallest part of diameter on fluid channel.Loop head 222 is located at
The front side of main-inlet 221.Loop exit 223 is located at the rear side of main-inlet 221, and loop exit 222 and loop head 223 pass through culvert
Road 241 connects.
204 sets of duct ring assemblies outside vacuum tubings 202, offer driving 242 He of fluid inlet on duct ring assemblies 204
The duct 241 of annular.The duct 241 of annular is connected to loop exit 223 and loop head 222, and driving fluid inlet 242 enters with master
Mouth 221 is connected to.
Head end shield 206 and tail portion end shield 208.Head end shield 206 and tail portion end shield 208 are spliced to form shell end shield.Outside
Shell end shield accommodates vacuum tubings 202 and duct ring assemblies 204 through assembling, is provided on head end shield 206 and tail portion end shield 208
Hole is respectively aligned to arrival end and the outlet end of vacuum tubings 202.
210 sets of gap baffle ring on vacuum tubings 202, between head end shield 206 and duct ring assemblies 204.Scheming
In the embodiment shown, gap baffle ring 210 has the supporting leg stretched out, and the supporting leg of stretching withstands duct ring assemblies 204, and baffle ring ontology
Withstand head end shield 206.In this way, gap can be reserved between head end shield 206 and duct ring assemblies 204, so that being recycled into
Mouthfuls 222 will not be blocked by head end shield 206, to guarantee that circulation of fluid can be from loop exit via refilling circulation after duct
Entrance.
Fig. 4 discloses the assembling perspective structure figure of the culvert type vacuum generator of an embodiment according to the present utility model.
Fig. 5 disclose C-C in Fig. 4 to cross section structure figure.In figures 4 and 5, the portion of composition culvert type vacuum generator is shown
Part: vacuum tubings 202, duct ring assemblies 204, head end shield 206, tail portion end shield 208 and gap baffle ring 210.
Fig. 6 a and Fig. 6 b disclose the assembling structure of the culvert type vacuum generator of an embodiment according to the present utility model
Figure.In Fig. 6 a and Fig. 6 b, the flow direction of circulation of fluid is shown with arrow.Fluid from loop exit 223 be discharged after, by
Shell end shield is spliced to form in head end shield 206 and tail portion end shield 208 all to close vacuum tubings 202 and duct ring assemblies 204
In wherein, fluid can be entered in fluid channel by duct 241 again through loop head 222, so that the fluid in channel
Amount increases.Gap baffle ring 210 makes the enough gaps retained between duct ring assemblies 204 and head end shield 206, avoids recycling
Entrance 222 is blocked.
Fig. 7 discloses the cross section structure figure of the culvert type vacuum generator of an embodiment according to the present utility model, discloses
Fluid trend.Fig. 7 be in Fig. 4 A-A to cross section structure.Fluid, such as compressed air is driven to pass through driving fluid inlet 242
Into, then from main-inlet 221 inject fluid channel.Since main-inlet 221 is outlet end that is inwardly angled and being directed toward fluid channel,
Therefore driving fluid flows to the outlet end of fluid channel.Since fluid channel is intermediate small, the big channel design in both ends and master
Entrance 221 is that the smallest position of diameter is arranged on fluid channel, after running fluid through main-inlet 221 and injecting, by literary mound
In effect generate pressure difference so that pressure in the middle part of fluid channel is less than the pressure of inlet, thus the arrival end of fluid channel
Fluid is sucked, suction is generated.The fluid of sucking is discharged after fluid channel from the outlet end of fluid channel, the segment fluid flow
Path is indicated in Fig. 7 with digital " 1. ", for the primary fluid path of the culvert type vacuum generator.In the process of fluid discharge
In, a part of fluid in fluid channel comes back to fluid channel via loop exit 223, duct 241 and loop head 222
In, the path of the part flow graph is indicated in Fig. 7 with digital " 2. ".The fluid path of digital " 2. " statement constitutes circulation of tail gas,
It is closed cycle, the air-flow which flows into fluid channel increases, and pressure difference also enhances, and inhales so as to be promoted
Power.
The utility model vacuum generator and vacuum tubings have circulation of tail gas structure, can be by one in the gas of discharge
Divide and be reintroduced back in air inlet by duct, form closed cycle, enhance pressure difference by increasing throughput, to enhance vacuum suction
Power.
Above-described embodiment, which is available to, is familiar with person in the art to realize or using the utility model, be familiar with ability
The personnel in domain can in the case where not departing from the utility model thought of the utility model, to above-described embodiment make various modifications or
Variation, thus the protection scope of the utility model is not limited by above-described embodiment, and should meet claims to mention
Inventive features maximum magnitude.
Claims (8)
1. a kind of vacuum tubings of culvert type vacuum generator, which is characterized in that the fluid channel of perforation is formed in vacuum tubings,
The diameter of fluid channel is incrementally increased from centre to both ends, and main-inlet, loop head are offered on the tube wall of vacuum tubings and is followed
Ring outlet, main-inlet are located at the smallest part of diameter on fluid channel, and loop head is located at the front side of main-inlet, loop exit position
In the rear side of main-inlet, loop exit is connected with loop head by duct；
It drives fluid to inject from main-inlet, flows to the outlet end of fluid channel, fluid is driven to generate pressure difference by Venturi effect,
So that the arrival end of fluid channel sucks fluid, it is discharged after fluid channel from the outlet end of fluid channel；
A part of fluid in fluid channel comes back in fluid channel via loop exit, duct and loop head, to increase
Strong pressure difference.
2. the vacuum tubings of culvert type vacuum generator as described in claim 1, which is characterized in that the vacuum tubings are in circle
Platform shape, the fluid channel are anisodiametric cylindrical channel, vacuum tubings and fluid channel central axis having the same.
3. the vacuum tubings of culvert type vacuum generator as claimed in claim 2, which is characterized in that main-inlet inclination perforation is true
The tube wall of blank pipe body, main-inlet are directed toward the outlet end of fluid channel, circumference cloth of several main-inlets along vacuum tubings from outside to inside
It sets, the elongated central line of several main-inlets converges on the central axis；
The tube wall of loop head inclination perforation vacuum tubings, loop head is directed toward the outlet end of fluid channel from outside to inside, several
Along the circumference of vacuum tubings, the elongated central line of several loop heads converges on the central axis loop head；
The tube wall of loop exit inclination perforation vacuum tubings, loop exit is directed toward the outlet end of fluid channel from inside to outside, several
Along the circumference of vacuum tubings, the elongated central line of several loop exits converges on the central axis loop exit.
4. the vacuum tubings of culvert type vacuum generator as described in claim 1, which is characterized in that be cased with culvert outside vacuum tubings
Road ring assemblies offer the duct of annular, annular duct connection loop exit and loop head on duct ring assemblies.
5. a kind of culvert type vacuum generator characterized by comprising
Vacuum tubings, the interior fluid channel for forming perforation of vacuum tubings, the diameter of fluid channel are incrementally increased from centre to both ends,
Main-inlet, loop head and loop exit are offered on the tube wall of vacuum tubings, it is minimum that main-inlet is located at diameter on fluid channel
Part, loop head is located at the front side of main-inlet, and loop exit is located at the rear side of main-inlet, and loop exit and loop head are logical
Cross duct connection；
Duct ring assemblies, cover outside vacuum tubings, and the duct of driving fluid inlet and annular, annular are offered on duct ring assemblies
Duct connection loop exit and loop head, driving fluid inlet is connected to main-inlet；
Head end shield and tail portion end shield, head end shield and tail portion end shield are spliced to form shell end shield, and shell end shield is accommodated through assembling
Vacuum tubings and duct ring assemblies, be provided with hole on head end shield and tail portion end shield, be respectively aligned to vacuum tubings arrival end and
Outlet end；
It drives fluid to inject via driving fluid inlet from main-inlet, flows to the outlet end of fluid channel, drive fluid by literary mound
In effect generate pressure difference so that fluid channel arrival end suck fluid, from the outlet of fluid channel after fluid channel
End is discharged, and a part of fluid in fluid channel comes back to fluid via loop exit, the duct of annular and loop head and leads to
In road, to enhance pressure difference.
6. culvert type vacuum generator as claimed in claim 5, which is characterized in that further include gap baffle ring, gap baffle ring set
On vacuum tubings, between head end shield and duct ring assemblies.
7. culvert type vacuum generator as claimed in claim 6, which is characterized in that the vacuum tubings are in truncated cone-shaped, described
Fluid channel is anisodiametric cylindrical channel, vacuum tubings and fluid channel central axis having the same.
8. culvert type vacuum generator as claimed in claim 7, which is characterized in that
The tube wall of main-inlet inclination perforation vacuum tubings, main-inlet are directed toward the outlet end of fluid channel from outside to inside, and several masters enter
The elongated central line of the circumference of opening's edge vacuum tubings, several main-inlets converges on the central axis；
The tube wall of loop head inclination perforation vacuum tubings, loop head is directed toward the outlet end of fluid channel from outside to inside, several
Along the circumference of vacuum tubings, the elongated central line of several loop heads converges on the central axis loop head；
The tube wall of loop exit inclination perforation vacuum tubings, loop exit is directed toward the outlet end of fluid channel from inside to outside, several
Along the circumference of vacuum tubings, the elongated central line of several loop exits converges on the central axis loop exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820493085.5U CN208261432U (en) | 2018-04-09 | 2018-04-09 | Culvert type vacuum generator and its vacuum tubings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820493085.5U CN208261432U (en) | 2018-04-09 | 2018-04-09 | Culvert type vacuum generator and its vacuum tubings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208261432U true CN208261432U (en) | 2018-12-21 |
Family
ID=64676262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820493085.5U Withdrawn - After Issue CN208261432U (en) | 2018-04-09 | 2018-04-09 | Culvert type vacuum generator and its vacuum tubings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208261432U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273805A (en) * | 2018-04-09 | 2018-07-13 | 上汽大众汽车有限公司 | Culvert type vacuum generator and its vacuum tubings |
-
2018
- 2018-04-09 CN CN201820493085.5U patent/CN208261432U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273805A (en) * | 2018-04-09 | 2018-07-13 | 上汽大众汽车有限公司 | Culvert type vacuum generator and its vacuum tubings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103206415B (en) | Airflow injection device | |
| CN101433796B (en) | Method and system for collecting paper dust | |
| CN208261432U (en) | Culvert type vacuum generator and its vacuum tubings | |
| CN106705166A (en) | Cooking fume discharging assembly and cooking fume discharging device | |
| CN205272461U (en) | Plastics cutlery box production facility | |
| CN205202452U (en) | Pay -off dust removal mechanism of three editions printing machines | |
| CN108273805A (en) | Culvert type vacuum generator and its vacuum tubings | |
| CN206285057U (en) | Motor cover for dust catcher, the motor with it and dust catcher | |
| CN205913916U (en) | A venturi jetting pipe for dust remover | |
| JP2011058461A (en) | Intake device for engine | |
| CN207750266U (en) | A kind of centrifugal blower | |
| CN208634095U (en) | A kind of wind wheel and its air blower of application | |
| CN210164695U (en) | Fan structure and range hood applying same | |
| CN205639063U (en) | Fan impeller | |
| CN205481216U (en) | Reposition of redundant personnel device and it has this reposition of redundant personnel to use device for range hood | |
| CN211807465U (en) | Automatic material suction machine for plastic processing | |
| CN104084359B (en) | Salt spraying device for producing impregnation gloves | |
| CN206214024U (en) | The ground brush assemblies and the dust catcher with it of dust catcher | |
| CN207333824U (en) | Front inserting plastic plate swap-in water valve | |
| CN207769941U (en) | A kind of layered paper edge recovery device | |
| CN205775042U (en) | Noise reduction air silk nozzle arrangements | |
| CN206121977U (en) | Deserted diffusion of gases device | |
| WO2018168238A1 (en) | Centrifugal blower | |
| CN203726713U (en) | Machine head for pneumatic material suction of injection molding machine | |
| CN205151196U (en) | Sub - auto sucking machine of continuous type plastic pellet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181221 Effective date of abandoning: 20230526 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20181221 Effective date of abandoning: 20230526 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |