CN107838568A - Anti-splashing device - Google Patents
Anti-splashing device Download PDFInfo
- Publication number
- CN107838568A CN107838568A CN201711371869.7A CN201711371869A CN107838568A CN 107838568 A CN107838568 A CN 107838568A CN 201711371869 A CN201711371869 A CN 201711371869A CN 107838568 A CN107838568 A CN 107838568A
- Authority
- CN
- China
- Prior art keywords
- ratchet
- splashing device
- tensioning apparatus
- plate washer
- away
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention provides a kind of anti-splashing device,For closed pipe end,Anti-splashing device includes the plate washer being engaged with pipe end,Anti-splashing device also includes the tensioning apparatus positioned at plate washer side,Tensioning apparatus includes ratchet,Enclose the multiple blades for being located at ratchet periphery and coordinating one by one with multiple back of tooth of ratchet,It is surrounded on the elastic ring of multiple blade peripheries,There are tensioning apparatus multiple blades closely to enclose the original state for being located at ratchet periphery,Ratchet promotes blade to be directed away from the motion of ratchet direction and elastic ring is strutted to the use state for coordinating closed pipe end with plate washer,Anti-splashing device also includes the handwheel fixed located at side of the plate washer away from tensioning apparatus and through plate washer with ratchet,Tensioning apparatus is driven to switch between original state and use state during hand wheel rotating,Anti-splashing device can prevent splashing to be attached to internal surface of pipe in cutting,Influence internal surface of pipe quality.
Description
Technical field
The present invention relates to cutting technique field, more particularly to a kind of avoid cutting from splashing being attached to the anti-of internal surface of pipe and fly
Splash device.
Background technology
Quality of Laser Cutting is good in existing cutting technique, efficiency high and the industrial robot that can arrange in pairs or groups realize that the three-dimensional of part adds
Work, therefore by more and more extensive application, especially cut field in tubing.The caused splashing easily attachment in tubing cutting process
To the surfaces externally and internally of tubing, the surface quality of part is influenceed, and user is relatively difficult to see the inner surface of tubing in use, therefore
If corrosion and damage occurs in the inner surface of tubing, user is more difficult to learn, so as to potential safety hazard easily occur.
Existing process is attempted by the way of purging or producing negative pressure so that laser cutting is splashed to be flowed toward assigned direction
Method so as to avoiding splashing from being attached on part.Limitation be present in both approaches, such as when cutting gas pressure is larger
Effect is poor, then for example because gas purging or suction function cause cutting gas purging slot deviation part while so as to shadow
Cut quality is rung, while the both of which can not ensure that laser cutting is splashed and not enter the inside of tubing completely.
In view of this, it is necessary to a kind of improved anti-splashing device is provided, to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of anti-splashing device for closed pipe end, prevents cutting is splashed from adhering to
To internal surface of pipe, internal surface of pipe quality is influenceed.
To achieve the above object, the invention provides a kind of anti-splashing device, for closed pipe end, the anti-splashing
Device includes the plate washer being engaged with pipe end, and the tensioning that the anti-splashing device also includes positioned at the plate washer side fills
Put, the tensioning apparatus includes ratchet, encloses and is located at ratchet periphery and coordinates one by one with multiple back of tooth of the ratchet more
Individual blade, the elastic ring for being surrounded on multiple blade peripheries, the tensioning apparatus there are multiple blades closely to enclose be located at
The original state of ratchet periphery, the ratchet promote the blade be directed away from the ratchet direction motion by elastic ring strut with
The plate washer coordinates the use state of closed pipe end, and the anti-splashing device is also included located at plate washer away from the tensioning dress
The side put and the handwheel fixed through the plate washer with the ratchet, the tensioning apparatus is driven first during the hand wheel rotating
Switch between beginning state and use state.
As a further improvement on the present invention, the plate washer is provided with mounting hole, and the handwheel includes and the ratchet phase
Fix and be interference fitted the installation portion of installation with the mounting hole, be fixed on hand of the installation portion away from the ratchet side
Handle.
As a further improvement on the present invention, the blade is provided with the first opening, and the tensioning apparatus also includes fixing
On the plate washer and in the guide pad of the guiding blade movement in the described first opening.
As a further improvement on the present invention, along the both sides set up separately perpendicular to the blade movement direction on the guide pad
Wall contacts all the time with the described first opening, when the tensioning apparatus is located at original state, the one end of the guide pad away from ratchet
It is in contact with described first one end of opening away from ratchet；When the tensioning apparatus is located at use state, the guide pad is close
One end of ratchet is in contact with the described first opening close to one end of ratchet.
As a further improvement on the present invention, first opening is waist-shaped hole, forms two parallel sides of the waist-shaped hole
Direction of motion extension of the wall along the blade, formed two arcwalls of the waist-shaped hole respectively close to, set away from the ratchet,
The guide pad is waist type block.
As a further improvement on the present invention, the blade is provided with the second opening, and the tensioning apparatus includes being located at institute
The spring in the second opening is stated, the one end of the spring away from the ratchet is fixed on the plate washer, and the spring is close to institute
The one end for stating ratchet abuts or is connected close to one end of the ratchet with the described second opening, and the tensioning apparatus is located at initial shape
During state, the spring is in free state or a compressive state；Or the spring is fixed on institute close to one end of the ratchet
State on plate washer, and the spring has close to one end of the ratchet and second opening between one end of the ratchet
Gap, the one end of the spring away from the ratchet are connected with described second one end of opening away from the ratchet, the tensioning
When device is located at original state, the spring is in free state or an extended state.
As a further improvement on the present invention, elastic ring is made up of heat resistant rubber material.
As a further improvement on the present invention, the anti-splashing device also includes installation and positioning structure, the installation positioning
Structure include positioned at the ratchet away from the handwheel side and be connected with the pawl wheel locating piece, be installed on tubing
On alignment pin, offer on the locating piece through the locating piece and face away from the positioning that the handwheel direction opens
Groove, the alignment pin and the locating slot clamping.
As a further improvement on the present invention, the alignment pin is cylindric, the locating slot include its internal diameter with it is described
The equal positioning hole of alignment pin diameter, it is connected with side of the positioning hole away from the handwheel and faces away from the handwheel
The opening that direction opens, the alignment pin are open and the positioning hole clamping through described.
As a further improvement on the present invention, the two side for forming the opening is curved wall, two curved sides
The distance between both ends that minimum range and the two side between wall connect with the positioning hole are both less than the alignment pin
Diameter.
The beneficial effects of the invention are as follows：When the tensioning apparatus of the anti-splashing device of the present invention is located at original state, it can facilitate
Efficiently the anti-splashing device is installed in tubing, and tensioning apparatus is switched to so that described by use state by handwheel
Elastic ring coordinates the closed tubing of plate washer port to be cut, and the inner surface of tubing is attached to so as to prevent from cutting caused splash,
Ensure the quality of materials of internal surface of pipe；Liquid, solid-state splash can be not only prevented in addition, and for laser cutting, can be prevented
Only unnecessary gaseous material enters the quality of materials that internal surface of pipe destroys inner surface, and the anti-splashing apparatus structure is simple, user
It can lean on..
Brief description of the drawings
Fig. 1 is the perspective structure schematic diagram that anti-splashing device of the present invention is installed on tubing；
Fig. 2 is the perspective structure schematic diagram for another angle that anti-splashing device shown in Fig. 1 is installed on tubing；
Fig. 3 is the perspective structure schematic diagram for another state that anti-splashing device shown in Fig. 1 is installed on tubing；
Fig. 4 is the perspective structure schematic diagram for the process that anti-splashing device shown in Fig. 1 is installed on tubing；
Fig. 5 is the structural representation of the part anti-splashing device shown in Fig. 1；
Fig. 6 is the structural representation of another angle of the part anti-splashing device shown in Fig. 1.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings with specific embodiment pair
The present invention is described in detail.
As shown in Figures 1 to 6, the anti-splashing device 100 for the closed port of tubing 200 of the invention, prevent cutting from flying
The inner surface into tubing 200 is splashed, influences the quality of the inner surface of tubing 200.The anti-splashing device 100 includes and tubing
Plate washer 1 that 200 ports are engaged, the tensioning apparatus 2 positioned at the side of plate washer 1, positioned at the plate washer 1 away from the tensioning dress
Handwheel 3, the installation and positioning structure 4 for aiding in being installed on tubing 200 put 2 side and fixed with the tensioning apparatus 2.
The sectional area for being dimensioned slightly smaller than the port of tubing 200 of the plate washer 1, the plate washer 1 are made up of heat-resisting rigid material.
Mounting hole 11 is offered on the plate washer 1, the handwheel 3 is fixed through plate washer 1 with the tensioning apparatus 2.
The tensioning apparatus 2 include ratchet 21, enclose be located at the periphery of the ratchet 21 and with multiple back of tooth of the ratchet 21
Multiple blades 22 for coordinating one by one, the elastic ring 23 for being surrounded on multiple peripheries of the blades 22.As shown in fig. 6, the tensioning dress
Putting 2 has multiple blades 22 are close to enclose the original state for being located at the periphery of ratchet 21, the circumference of elastic ring 23
Overlapped with the outline of the plate washer 1, be easy to the anti-splashing device 100 to be arranged in tubing 200.As shown in figure 3, described
Tight device also promotes the blade 22 to be directed away from the direction of ratchet 21 motion and struts elastic ring 23 with the ratchet 21
Coordinate the use state of the closed port of tubing 200, when the tensioning apparatus 2 is in use state, the elasticity with the plate washer 1
23 circumferences are enclosed more than the outline of the plate washer 1 to coordinate the closed port of tubing 200 with the plate washer 1.User rotates institute
Stating handwheel 3 drives the tensioning apparatus 2 to switch between original state and use state.
In the present embodiment, the ratchet 21 has six teeth, thus the tensioning apparatus 2 include six respectively with six back of tooth
The blade 22 coordinated one by one.
Offer the first opening 221 on the blade 22, the tensioning apparatus 2 also include being fixed on the plate washer 1 and
With the guide pad 24 that the guiding blade 22 moves in the described first opening 221.The guide pad 24 by screw 50 with it is described
Plate washer 1 is fixed, along perpendicular to the two side that the direction of motion of blade 22 sets up separately and the described first opening on the guide pad 24
221 contact all the time, when the tensioning apparatus 2 is located at original state, the one end of the guide pad 24 away from ratchet 21 and described the
One 221 one end away from ratchet 21 of opening are in contact；When the tensioning apparatus 2 is located at use state, the guide pad 24 is close
One end of ratchet 21 is in contact with the described first opening 221 close to one end of ratchet 21, and the move distance of the blade 22 is by institute
State guide pad 24 and the limitation of the described first opening 221.
In the present embodiment, first opening 221 is waist-shaped hole, forms two parallel side walls of the waist-shaped hole described in
The direction of motion extension of blade 22, formed two arcwalls of the waist-shaped hole respectively close to, set away from the ratchet 21；It is described
Guide pad 24 is waist type block, and the width of the waist type block is equal to the direction of motion of the edge perpendicular to the blade 22 of the waist-shaped hole
Width, the length of the waist type block is less than the length of the direction of motion of the waist-shaped hole along the blade 22, the blade 22
Move distance for the waist type block and the waist-shaped hole length difference.
The second opening 222 is further opened with the blade 22, the tensioning apparatus 2 is also included positioned at the described second opening
Spring 25 in 222, the spring 25 are used to aid in the blade 22 being directed away from the ratchet by the ratchet 21 promotion
Resetted after the motion of 21 directions.
The one end of the spring 25 away from the ratchet 21 is fixed by screw 50 and the plate washer 1, and the spring 25 leans on
One end of the nearly ratchet 21 abuts or is connected close to one end of ratchet 21 with the described second opening 222.The tensioning apparatus 2
When original state, the spring 25 is in free state or a compressive state.
In the present embodiment, the spring 25 is open 222 close to ratchet close to one end of the ratchet 21 and described second
21 one end abuts, and the one end of the spring 25 only away from the ratchet needs to be fixedly mounted, quick and easy for installation.The tensioning dress
When putting 2 and being located at original state, the spring 25 is in free state, when the tensioning apparatus 2 is located at use state, the spring
25 are in compressive state, and the spring 25 applies the power towards ratchet 21 to the blade 22, in the blade 22 from using shape
State to original state switch when, aid in the blade 22 to reset.In other embodiments, the tensioning apparatus 2 is located at initial shape
During state, the spring 25 is in a compressive state, and when the tensioning apparatus 2 is located at use state, the spring 25 is in another
Compressive state.Deformation when spring 25 is in a compressive state is less than deformation when it is in another compressive state, the spring
25 apply the power towards ratchet 21 to the blade 22 all the time, not only can be in the tensioning apparatus 2 from use state to initial shape
State aids in the blade 22 to reset when switching, and can also aid in the blade 22 tight when the tensioning apparatus 2 is in original state
Close enclose is located at the periphery of ratchet 21.
The installation of the spring 25 is not limited to above-mentioned mounting structure, and in further embodiments, the spring 25 is close to institute
The one end for stating ratchet 21 is fixed on the plate washer 1, and the spring 25 is opened close to one end of the ratchet 21 and described second
Mouthfuls 222 have a gap between one end of the ratchet 21, the one end of the spring 25 away from the ratchet 21 and described the
One end connection of two openings 222 away from the ratchet 21.When the tensioning apparatus 2 is located at original state, the spring 25 is in
Free state or an extended state.
The elastic ring 23 is made up of heat resistant rubber.The madial wall of the elastic ring 23 is with the blade 22 away from the spine
The contact aside of wheel 21.The elastic ring 23 be close to the plate washer 1 set with when the tensioning apparatus 2 is in use state with
The plate washer 1 coordinates the closed port of tubing 200, enters so as to which the plate washer 1 coordinates stop cutting to splash with the elastic ring 23
The inner surface of tubing 200.
The handwheel 3 includes fixing with the phase of ratchet 21 and coordinates the installation portion 31 of installation with the mounting hole 11, consolidates
It is fixed to match somebody with somebody with handle 32 of the installation portion 31 away from the side of ratchet 21, the installation portion 31 with the interference of mounting hole 11
Close, to meet that the handwheel 3 goes to optional position, the frictional force between the mounting hole 11 and the handwheel 3 can make described
The self-locking of handwheel 3, i.e., after external force is removed, the stiction between the handwheel 3 and the mounting hole 11 can offset hand all the time
The turning power of wheel 3, the turning power are applied on ratchet 21 by the blade 22, and the power that the blade 22 is subject to is from described
Elastic ring 23 and the spring 25.The handle 32 is strip, is easy to force to rotate.
The installation and positioning structure 4 include positioned at the ratchet 21 away from the handwheel 3 side and with the ratchet 21
The locating piece 41 of rotation connection, the alignment pin 42 being installed on tubing 200, offer through the positioning on the locating piece 41
Block 41 and the locating slot 43 for facing away from the direction of handwheel 3 opening, the alignment pin 42 and the clamping of locating slot 43.
Specifically, the alignment pin 42 is cylindric, the locating slot 43 includes its internal diameter and the diameter of alignment pin 42
Equal positioning hole 431, it is connected with side of the positioning hole 431 away from the handwheel 3 and faces away from the side of handwheel 3
To the opening 432 opened, the two side that forms the opening 432 is curved wall, the minimum between two curved walls
The distance between both ends that distance and the two side connect with the positioning hole are both less than the diameter of the alignment pin 42.Installation
During, the alignment pin 42 is engaged in the positioning hole 431 through the opening 432, to complete the anti-splashing device
100 Primary Locations are installed to tubing 200 and treated at closed port, and easy for installation and position is accurate.
The use step of the anti-splashing device 100 of the present invention includes：As shown in figure 1, it is in original state in tensioning apparatus 2
When, after the anti-splashing device 100 is installed on tubing 200；Handwheel 3 is rotated, as shown in figure 3, tensioning apparatus 100 is adjusted
It is simple in construction to use state so that elastic ring 23, which struts, coordinates the closed port of tubing 200 of plate washer 1, it is easy to operate, can be complete
It is complete to avoid cutting from splashing into the inner surface of tubing.
Specifically, the use step of the anti-splashing device 100 of the present invention also includes：As shown in figure 4, at tensioning apparatus 2
When original state, alignment pin 42 is first installed to 200 default position of tubing, after by the locating piece 41 and the alignment pin
42 coordinate installation that the anti-splashing device 100 is installed on tubing 200.
In summary, when the tensioning apparatus 2 of anti-splashing device 100 of the present invention is located at original state, can conveniently by
The anti-splashing device 100 is installed in tubing 200, and tensioning apparatus 2 is switched into use state so that described by handwheel 3
Elastic ring 23 coordinates the closed tubing 200 of plate washer 1 port to be cut, and tubing 200 is attached to so as to prevent from cutting caused splash
Inner surface, it is ensured that the quality of materials of the inner surface of tubing 200；Liquid, solid-state splash can be not only prevented in addition, and for swashing
Light is cut, and can prevent unnecessary gaseous material from entering the quality of materials that the inner surface of tubing 200 destroys inner surface, the anti-splashing device
100 is simple in construction, easy to use and reliable.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to preferred embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that, technical scheme can be modified
Or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a kind of anti-splashing device, for closed pipe end, the anti-splashing device includes the shelves being engaged with pipe end
Plate, it is characterised in that：The anti-splashing device also includes the tensioning apparatus positioned at the plate washer side, and the tensioning apparatus includes
Ratchet, enclose the multiple blades for being located at ratchet periphery and coordinating one by one with multiple back of tooth of the ratchet, be surrounded on multiple institutes
State the elastic ring of blade periphery, the tensioning apparatus have multiple blades closely enclose be located at ratchet periphery original state,
The ratchet promotes the blade to be directed away from the ratchet direction motion and struts elastic ring and plate washer cooperation sealed tube
The use state of material port, the anti-splashing device are also included located at side of the plate washer away from the tensioning apparatus and described in
The handwheel that plate washer and the ratchet are fixed, drive during the hand wheel rotating tensioning apparatus original state and use state it
Between switch.
2. anti-splashing device according to claim 1, it is characterised in that：The plate washer is provided with mounting hole, the handwheel
Including installation portion that is mutually fixed with the ratchet and being installed with mounting hole interference fit, the installation portion is fixed on away from institute
State the handle of ratchet side.
3. anti-splashing device according to claim 1, it is characterised in that：The blade is provided with first and is open, described
Tight device also includes being fixed on the plate washer and in the guide pad of the guiding blade movement in the described first opening.
4. anti-splashing device according to claim 3, it is characterised in that：Transported on the guide pad along perpendicular to the blade
The two side that dynamic direction is set up separately contacts all the time with the described first opening, when the tensioning apparatus is located at original state, the guiding
The one end of block away from ratchet is in contact with described first one end of opening away from ratchet；The tensioning apparatus is located at use state
When, the guide pad is in contact close to one end of ratchet with the described first opening close to one end of ratchet.
5. anti-splashing device according to claim 4, it is characterised in that：First opening is waist-shaped hole, described in formation
Direction of motion extension of two parallel side walls of waist-shaped hole along the blade, formed two arcwalls of the waist-shaped hole respectively close to,
Set away from the ratchet, the guide pad is waist type block.
6. anti-splashing device according to claim 1, it is characterised in that：The blade is provided with second and is open, described
Tight device includes the spring in the described second opening, and the one end of the spring away from the ratchet is fixed on the plate washer
On, the spring is abutted or is connected close to one end of the ratchet with the described second opening close to one end of the ratchet, described
When tensioning apparatus is located at original state, the spring is in free state or a compressive state；Or the spring is close to described
One end of ratchet is fixed on the plate washer, and the spring is close described with the described second opening close to one end of the ratchet
There is gap, the one end of the spring away from the ratchet and the remote ratchet of the described second opening between one end of ratchet
One end connects, and when the tensioning apparatus is located at original state, the spring is in free state or an extended state.
7. anti-splashing device according to claim 1, it is characterised in that：Elastic ring is made up of heat resistant rubber material.
8. anti-splashing device according to claim 1, it is characterised in that：The anti-splashing device also includes installation positioning knot
Structure, the installation and positioning structure include deviating from the side of the handwheel positioned at the ratchet and determined with what the pawl wheel was connected
Position block, the alignment pin that is installed on tubing, offer through the locating piece on the locating piece and face away from the handwheel
The locating slot that direction opens, the alignment pin and the locating slot clamping.
9. anti-splashing device according to claim 8, it is characterised in that：The alignment pin is cylindric, the locating slot
Be connected including its internal diameter positioning hole equal with the alignment pin diameter, with side of the positioning hole away from the handwheel and
The opening that the handwheel direction opens is faced away from, the alignment pin is open and the positioning hole clamping through described.
10. anti-splashing device according to claim 9, it is characterised in that：The two side for forming the opening is curved side
The distance between wall, the both ends that minimum range and the two side between two curved walls connect with the positioning hole
The diameter of both less than described alignment pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711371869.7A CN107838568A (en) | 2017-12-19 | 2017-12-19 | Anti-splashing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711371869.7A CN107838568A (en) | 2017-12-19 | 2017-12-19 | Anti-splashing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107838568A true CN107838568A (en) | 2018-03-27 |
Family
ID=61664314
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711371869.7A Pending CN107838568A (en) | 2017-12-19 | 2017-12-19 | Anti-splashing device |
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| CN (1) | CN107838568A (en) |
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| CN204647714U (en) * | 2015-06-02 | 2015-09-16 | 宁波市宇华电器有限公司 | Ball valve test sealing mechanism |
| CN107327655A (en) * | 2016-04-30 | 2017-11-07 | 南京梅山冶金发展有限公司 | Online branch pipe disconnects Quick leak stoppage apparatus and blocking method |
| CN106930933A (en) * | 2017-05-22 | 2017-07-07 | 德帕姆(杭州)泵业科技有限公司 | The tune amount retaining mechanism of measuring pump |
| CN107120086A (en) * | 2017-06-23 | 2017-09-01 | 中国科学院武汉岩土力学研究所 | A kind of erosion control hole plug device |
| CN207681766U (en) * | 2017-12-19 | 2018-08-03 | 江苏北人机器人系统股份有限公司 | Anti-splashing device |
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