CN107161311A - A kind of knot screen of hydraulic jet propulsion system inlet channel - Google Patents
A kind of knot screen of hydraulic jet propulsion system inlet channel Download PDFInfo
- Publication number
- CN107161311A CN107161311A CN201710170596.3A CN201710170596A CN107161311A CN 107161311 A CN107161311 A CN 107161311A CN 201710170596 A CN201710170596 A CN 201710170596A CN 107161311 A CN107161311 A CN 107161311A
- Authority
- CN
- China
- Prior art keywords
- knot screen
- main shaft
- cutting members
- limiting plate
- guide groove
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/01—Marine propulsion by water jets having means to prevent foreign material from clogging fluid passage way
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a kind of knot screen of hydraulic jet propulsion system inlet channel.The knot screen is suitably mounted on main shaft, and the knot screen includes at least one impurity removing unit, and each impurity removing unit includes：Support bar, limiting plate, drive component, bearing pin and cutting members, limiting plate and drive component are installed on the main shaft, guide groove is offered on limiting plate, the bearing of trend of guide groove is vertical with the axis of main shaft, pin slide is arranged in guide groove, cutting members have fixing end, movable end and the cutting portion between fixing end and movable end, fixing end is arranged on one end of bearing pin, cutting portion is set towards the main shaft, one end of support bar is rotatably installed on limiting plate, the other end of support bar is rotatably installed in the middle part of cutting members, drive component is configured as driving bearing pin and moved back and forth along guide groove, so that the cyclically-varying of the distance between movable end and main shaft.The device dedoping step is simple and convenient, it is not necessary to artificial operation.
Description
Technical field
The present invention relates to hydraulic jet propulsion system accessory field, more particularly to a kind of removal of impurities of hydraulic jet propulsion system inlet channel
Device.
Background technology
Hydraulic jet propulsion system is a kind of driving tool of ship, after hull bottom water suction, inside inlet channel, then is passed through
The impeller of rotation does work to current, water is sprayed at a high speed from delivery port.
Due to there is rubbish incidental in water body, therefore, need to set trash rack in the water sucking mouth of hydraulic jet propulsion system,
The trash rack is used to stop that rubbish incidental enters inside hydraulic jet propulsion system.Because rubbish is of different sizes, part rubbish incidental
It can enter from the gap of trash rack inside inlet channel, and be suspended in inside inlet channel cavity volume, this causes rubbish incidental both
It is not easy the gap discharge from trash rack, is also not easy to spray from delivery port.Rotated at a high speed in the impeller of hydraulic jet propulsion system
When, rubbish incidental can not only influence the operating efficiency of impeller, can also produce abrasion to impeller, be simultaneously emitted by noise.For water inlet
The rubbish incidental suspended inside pipeline, existing processing method is mainly workman and stock stretches into inlet channel to take out rubbish miscellaneous
Thing.
During the present invention is realized, inventor has found that prior art at least has problems with：
The method of rubbish incidental wastes time and energy inside existing removing inlet channel, and can only be in the non-work of hydraulic jet propulsion system
Make state to carry out removing miscellaneous operation, this is for hydraulic jet propulsion system except miscellaneous operation is made troubles.
The content of the invention
In order to solve the unhandy problem of hydraulic jet propulsion system removal of impurities in the prior art, the embodiments of the invention provide one
Plant the knot screen of hydraulic jet propulsion system inlet channel.The technical scheme is as follows：
The embodiments of the invention provide a kind of knot screen of hydraulic jet propulsion system inlet channel, the knot screen is applicable
In on the main shaft in the inlet channel installed in hydraulic jet propulsion system, the knot screen includes at least one impurity removing unit, often
The individual impurity removing unit includes：Support bar, limiting plate, drive component, bearing pin and cutting members, the limiting plate and drive component are equal
On the main shaft, guide groove, the axle of the bearing of trend of the guide groove and the main shaft are offered on the limiting plate
Line is vertical, and the pin slide is arranged in the guide groove, and the cutting members have fixing end, movable end and positioned at described
Cutting portion between fixing end and the movable end, the movable end and the fixing end are the relative two ends of the cutting members,
The fixing end is arranged on one end of the bearing pin, and the cutting portion is set towards the main shaft, one end of the support bar
It is rotatably installed on the limiting plate, the other end of the support bar is rotatably installed in the middle part of the cutting members, the driving
Component is configured as driving the bearing pin to move back and forth along the guide groove so that between the movable end and the main shaft away from
From cyclically-varying.
Specifically, the knot screen also includes the knifeboard being suitably mounted on the main shaft, the knifeboard pair
The position at the cutting is answered to be provided with sharpening inclined-plane.
Further, the knot screen also includes：It is suitably mounted to the sharpening oil cylinder on the main shaft, the sharpening
The piston rod of oil cylinder is connected with the knifeboard, and the piston rod of the sharpening oil cylinder is arranged vertically with the limiting plate.
Further, the knot screen also includes slide rail, and the slide rail is arranged on the main shaft, and the knifeboard is slided
It is dynamic to be arranged on the slide rail.
Further, the drive component is telescopic oil cylinder, and one end of the bearing pin is vertically connected on the telescopic oil cylinder
Piston rod on, the other end of the bearing pin is slidably mounted in the guide groove.
Specifically, the maximum angle of the cutting members and the drive component is 30 °~60 °.
Specifically, the maximum angle of the cutting members and the drive component is 45 °.
Specifically, the back of the cutting members is curved, and the back is opposite with the cutting portion for the cutting members
Side.
Specifically, the knot screen includes impurity removing unit described in two groups, and two groups of impurity removing units are symmetricly set in institute
State the both sides of main shaft.
Further, impurity removing unit described in every group including two axis directions along the main shaft be arranged in juxtaposition described in remove
Different kinds of bonding units.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：Hydraulic jet propulsion provided in an embodiment of the present invention
The knot screen of device inlet channel, drives bearing pin to move by drive component, so as to drive the fixing ends of cutting members along leading
Moved to groove, the movable end of cutting members moves along a straight line, and holds up cutting members, they sup-port cutting members and limiting plate it
Between, with main shaft high-speed rotation, cutting members can cut the rubbish incidental near the main shaft in inlet channel, make rubbish incidental quilt
Less debris is broken into, and is sprayed from the gap between impeller blade, or, dropped from the grid gap of trash rack.Should
Knot screen can quickly discharge rubbish incidental, and process is simple and convenient, it is not necessary to artificial operation, can adapt to a variety of water sprays and push away
Enter device.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the stereochemical structure signal of the knot screen of hydraulic jet propulsion system inlet channel provided in an embodiment of the present invention
Figure；
Fig. 2 is the structure of the working condition of the knot screen of hydraulic jet propulsion system inlet channel provided in an embodiment of the present invention
Schematic diagram；
Fig. 3 is the knot of the off working state of the knot screen of hydraulic jet propulsion system inlet channel provided in an embodiment of the present invention
Structure schematic diagram；
Fig. 4 is the structural representation of impurity removing unit provided in an embodiment of the present invention；
Fig. 5 is the structural representation of knifeboard provided in an embodiment of the present invention and sharpening oil cylinder；
Fig. 6 is the mounting structure signal of the knot screen of hydraulic jet propulsion system inlet channel provided in an embodiment of the present invention
Figure.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
The embodiments of the invention provide a kind of knot screen of hydraulic jet propulsion system inlet channel, Fig. 1 carries for the present embodiment
The dimensional structure diagram of the knot screen of confession.As shown in figure 1, the knot screen includes at least one impurity removing unit 10, specifically
Ground, the impurity removing unit 10 is arranged on the main shaft b in the inlet channel of hydraulic jet propulsion system.
Specifically, mounting platform b1 is provided with main shaft b, limiting plate 1 and drive component 2 are installed in mounting platform b1
On.In the present embodiment, mounting platform b1 is the recess being opened on main shaft b, to adapt to less space in inlet channel.
In the case that space allows, mounting platform b1 can also be the boss structure for being arranged on main shaft surface.
Illustrate the structure of impurity removing unit 10 by taking an impurity removing unit 10 as an example below.
Specifically, impurity removing unit 10 includes：Support bar 5, limiting plate 1, drive component 2, bearing pin 3 and cutting members 4.Limiting plate
1 is fixed on main shaft b, and guide groove 1a is offered on limiting plate 1, and guide groove 1a bearing of trend is vertical with main shaft b axis.
Bearing pin 3 is slidably mounted in guide groove 1a.Cutting members 4 have fixing end 4a, movable end 4b and positioned at fixing end 4a and activity
The cutting portion 4c between 4b is held, wherein, movable end 4b and fixing end 4a are the relative two ends of cutting members 4.The fixing end of cutting members 4
4a is arranged on one end of bearing pin 3, and cutting portion 4c is set towards main shaft b.One end of support bar 5 is rotatably installed on limiting plate 1,
The other end of support bar 5 is rotatably installed in the middle part of cutting members 4.It is past along guide groove 1a that drive component 2 is configured as driving bearing pin 3
Multiple motion, so as to drive length directions of the fixing end 4a of cutting members 4 along guide groove 1a to move, and then causes the work of cutting members 4
The distance between moved end 4b and main shaft b cyclically-varying.
Fig. 2 and Fig. 3 are respectively the structural representation of the different state of impurity removing unit of the embodiment of the present invention 10.As shown in Fig. 2
It is located at guide groove 1a left end positioned at the fixing end 4a of the cutting members 4 on main shaft b tops, now, between movable end 4b and main shaft b
Distance is maximum.And in figure 3, guide groove 1a right-hand member is located at positioned at the fixing end 4a of the cutting members 4 on main shaft b tops, it is now, living
The distance between moved end 4b and main shaft b minimum.
Specifically, in the present embodiment, drive component 2 is telescopic oil cylinder, and one end of bearing pin 3 is vertically connected on telescopic oil cylinder
Piston rod 2a on, the other end of bearing pin 3 is slidably mounted in guide groove 1a, and the fixing end 4a of cutting members 4 is arranged on bearing pin 3
Middle part.When realizing, when telescopic oil cylinder is in elongation state, the distance between movable end 4b and main shaft b maximums；Work as telescopic oil cylinder
During in contraction state, the distance between movable end 4b and main shaft b minimums.So that when telescopic oil cylinder does not work,
Influence of the cutting members 4 to main shaft b rotation is smaller.
It should be noted that in the present embodiment, cutting members 4 and drive component 2 are positioned at the same side of limiting plate 1.At it
In its embodiment, the cutting members 4 can also be arranged in the side of limiting plate 1, and telescopic oil cylinder is arranged in the opposite side of limiting plate 1.
In addition, in other embodiments, the drive component 2 can include：Motor (not shown) and for by motor
The rotary motion of output shaft is converted to the transmission mechanism (not shown) of the linear motion of bearing pin 3, such as rack pinion machine
Structure, motor is fixed on mounting platform b1, and gear is arranged on the output shaft of motor, and is engaged with rack, and bearing pin 3 is arranged on tooth
On bar, motor driven gear is rotated, and rack can be moved under the drive of gear along main shaft b radial direction.
Specifically, Fig. 4 is the structural representation of impurity removing unit 10 provided in an embodiment of the present invention.As shown in figure 4, the removal of impurities
Device also includes oil cylinder seat 9.Telescopic oil cylinder is arranged on mounting platform b1 by oil cylinder seat 9.
When realizing, cutting members 4 can with elongated, cutting members 4 towards the side of main shaft 4 be its cutting portion 4c.
Further, the back of cutting members 4 can be arc, and the shape and main shaft b outer contour shape of arc match.
Wherein, back is the side opposite with cutting portion 4c of cutting members 4, so that when knot screen is in off working state, cutting
Part 4 can be taken in mounting platform b1, during main shaft b is rotated, and the resistance suffered by knot screen is reduced, so as to reduce
Loss in efficiency.
Specifically, as shown in Fig. 2 cutting members 4 and drive component 2 maximum angle A (i.e. movable end 4b and main shaft b away from
From it is farthest when cutting members 4) be 30 °~60 °.The angle ensure that the stock-removing efficiency of cutting members 4.Preferably, maximum angle A
For 45 °.The included angle A is 45 ° of maximum stock-removing efficiencies that ensure that cutting members 4, meanwhile, the angle ensure that the energy of support bar 5
The pulling force that cutting members 4 are operationally brought enough is born, and ensures that the knot screen has good stress-bearing capability.
Fig. 4 is the structural representation of an impurity removing unit 10 provided in an embodiment of the present invention.Fig. 5 carries for the embodiment of the present invention
The structural representation of the knifeboard 6 of confession.As shown in Figure 4 and Figure 5, the knot screen can also include being suitably mounted to install flat
Knifeboard 6 on platform b1, the corresponding cutting portion 4c of knifeboard 6 position is provided with sharpening inclined-plane 6a.Sharpening inclined-plane 6a is cut for polishing
Cut portion 4c.The cutting portion 4c of cutting members 4 can become not sharp with the increase of the number of times of cutting rubbish incidental, however, due to
It is in water for a long time in hydraulic jet propulsion system inlet channel, staff's dismounting knot screen is very inconvenient, so, the present embodiment
By setting knifeboard 6, when cutting members 4 are moved, cutting portion 4c and sharpening inclined-plane 6a rubs, so that cutting portion 4c is with whetting a knife
Inclined-plane 6a rubs and becomes sharp, and this causes the device to can be realized as the effect of 4b at polishing cutting without carrying out dismounting.
Further, as shown in figure 5, the knot screen can also include：Sharpening oil cylinder on mounting platform b1
7.The piston rod of sharpening oil cylinder 7 is connected with knifeboard 6, and the piston rod of sharpening oil cylinder 7 is arranged vertically with limiting plate 1.Due to mill
Knife inclined-plane 6a often rubs against cutting portion 4c, can make it that cutting portion 4c is thinning, so that sharpening inclined-plane 6a can not rub with cutting portion 4c
Contact is wiped, at this moment, pulls knifeboard 6 to be moved to 4c directions at cutting by the piston rod of sharpening oil cylinder 7, so that sharpening inclined-plane
6a is contacted with cutting portion 4c again, realizes the polishing to cutting portion 4c.
Further, as shown in figure 5, the knot screen can also include slide rail 8.Slide rail 8 is arranged on mounting platform b1,
Knifeboard 6 is slidably mounted on slide rail 8.Set slide rail 8 that sharpening oil cylinder 7 can be easy to pull knifeboard 6 to move.
As shown in Figures 2 and 3, in the present embodiment, main shaft b is provided with two mounting platform b1, two mounting platform b1 edges
Main shaft b axisymmetrical arrangement, sets two mounting platform b1 to improve the working effect of knot screen, while can also protect
Demonstrate,prove main shaft b mechanical strength, it is to avoid main shaft b fractures.
With reference to Fig. 1, provided with two groups of impurity removing units 10 in each mounting platform b1, two groups of impurity removing units 10 are symmetrical arranged and master
Axle b both sides.Arrange that two groups of impurity removing units 10 can improve the operating efficiency of knot screen.Every group of impurity removing unit 10 includes two
Impurity removing unit is arranged in juxtaposition along main shaft b axis direction.
It should be noted that on main shaft b in mounting platform b1 quantity and each mounting platform b1 impurity removing unit 10 number
Amount can be set according to actual needs, and the embodiment of the present invention is not restricted to this.
It following is a brief introduction of the work of the knot screen of hydraulic jet propulsion system inlet channel provided in an embodiment of the present invention
Make principle：
Fig. 6 is the mounting structure signal of the knot screen of hydraulic jet propulsion system inlet channel provided in an embodiment of the present invention
Figure.As shown in fig. 6, the knot screen of the hydraulic jet propulsion system inlet channel is arranged in the inlet channel a of hydraulic jet propulsion system
Main shaft b on.When the knot screen needs remove miscellaneous operation, drive component 2 drives the fixation of cutting members 4 by bearing pin 3
End 4a is moved along guide groove 1a, and the distance between movable end 4b and main shaft b of cutting members 4 cyclically-varying, support bar 5 are supported
Between cutting members 4 and limiting plate 1, for the state for keeping cutting members 4 to hold up, with the rotation of main shaft b high speeds, cutting members 4
Cutting portion 4c can cut the rubbish incidental near the main shaft b in inlet channel a, broken into rubbish incidental less miscellaneous
Thing, so that rubbish incidental can spray from the gap between impeller blade c, or, dropped from trash rack d gap.
When hydraulic jet propulsion system need not remove miscellaneous operation, drive component 2 drives the fixing end of cutting members 4 by bearing pin 3
4a is moved along guide groove 1a, and the movable end 4b of cutting members 4 moves along a straight line to be moved to mounting platform b1, is in cutting members 4
Prostration state is accommodated in mounting platform b1.
The knot screen of hydraulic jet propulsion system inlet channel provided in an embodiment of the present invention, bearing pin is driven by drive component
Motion, so as to drive the fixing end of cutting members to be moved along guide groove, the movable end of cutting members moves along a straight line, and erects cutting members
Rise, they sup-port is between cutting members and limiting plate, and with main shaft high-speed rotation, cutting members can be cut in inlet channel
Rubbish incidental near main shaft, makes rubbish incidental be broken into less debris, and is sprayed from the gap between impeller blade, or
Person, drops from the grid gap of trash rack.The knot screen can quickly discharge rubbish incidental, and process is simple and convenient,
Need not manually it operate, the knot screen is suitably mounted on various sizes of main shaft so that knot screen can adapt to many
Plant hydraulic jet propulsion system.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of knot screen of hydraulic jet propulsion system inlet channel, it is characterised in that the knot screen is suitably mounted to
On main shaft in the inlet channel of hydraulic jet propulsion system, the knot screen includes at least one impurity removing unit, each described to remove
Different kinds of bonding units includes：Support bar, limiting plate, drive component, bearing pin and cutting members,
The limiting plate and the drive component are installed on the main shaft, and guide groove is offered on the limiting plate, described
The bearing of trend of guide groove is vertical with the axis of the main shaft, and the pin slide is arranged in the guide groove,
The cutting members have fixing end, movable end and the cutting portion between the fixing end and the movable end, institute
It is the relative two ends of the cutting members to state movable end and the fixing end, and the fixing end is arranged on one end of the bearing pin,
The cutting portion is set towards the main shaft,
One end of the support bar is rotatably installed on the limiting plate, and the other end of the support bar is rotatably installed in described cut
The middle part of cutting members,
The drive component is configured as driving the bearing pin to move back and forth along the guide groove so that the movable end with it is described
The cyclically-varying of the distance between main shaft.
2. knot screen according to claim 1, it is characterised in that the knot screen also includes being suitably mounted to institute
State the position at the knifeboard on main shaft, the knifeboard correspondence cutting and be provided with sharpening inclined-plane.
3. knot screen according to claim 2, it is characterised in that the knot screen also includes：It is suitably mounted to
Sharpening oil cylinder on the main shaft, the piston rod of the sharpening oil cylinder is connected with the knifeboard, and the work of the sharpening oil cylinder
Stopper rod is arranged vertically with the limiting plate.
4. knot screen according to claim 3, it is characterised in that the knot screen also includes slide rail, the slide rail
On the main shaft, the knifeboard is slidably mounted on the slide rail.
5. knot screen according to claim 1, it is characterised in that the drive component is telescopic oil cylinder, the bearing pin
One end be vertically connected on the piston rod of the telescopic oil cylinder, the other end of the bearing pin is slidably mounted on the guide groove
It is interior.
6. knot screen according to claim 1, it is characterised in that the cutting members and the maximum folder of the drive component
Angle is 30 °~60 °.
7. knot screen according to claim 6, it is characterised in that the cutting members and the maximum folder of the drive component
Angle is 45 °.
8. knot screen according to claim 1, it is characterised in that the back of the cutting members is curved, the back
For the side opposite with the cutting portion of the cutting members.
9. the knot screen according to claim any one of 1-8, it is characterised in that the knot screen is included described in two groups
Impurity removing unit, two groups of impurity removing units are symmetricly set in the both sides of the main shaft.
10. knot screen according to claim 9, it is characterised in that impurity removing unit described in every group includes two along described
The impurity removing unit that the axis direction of main shaft is arranged in juxtaposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170596.3A CN107161311B (en) | 2017-03-21 | 2017-03-21 | A kind of exclusion device of hydraulic jet propulsion system water inlet line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170596.3A CN107161311B (en) | 2017-03-21 | 2017-03-21 | A kind of exclusion device of hydraulic jet propulsion system water inlet line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107161311A true CN107161311A (en) | 2017-09-15 |
| CN107161311B CN107161311B (en) | 2019-03-12 |
Family
ID=59848811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710170596.3A Active CN107161311B (en) | 2017-03-21 | 2017-03-21 | A kind of exclusion device of hydraulic jet propulsion system water inlet line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107161311B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572744A (en) * | 2020-06-01 | 2020-08-25 | 中国船舶科学研究中心 | Hydraulic shear device for underwater winding of ship pump jet propeller |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11115891A (en) * | 1997-10-09 | 1999-04-27 | Ishigaki:Kk | Screen device for water suction port of water jet propulsion ship |
| CN200992297Y (en) * | 2006-12-22 | 2007-12-19 | 中国舰船研究设计中心 | Foreign removing device for ship water-jetting propelling system |
| CN201161712Y (en) * | 2008-02-22 | 2008-12-10 | 芮应睿 | Mowing device capable of being used for spray water propulsion shipboard |
| WO2009029624A1 (en) * | 2007-08-27 | 2009-03-05 | Yuting Rui | Weed-cutter for a craft propelled by a water jet |
| CN204239346U (en) * | 2014-11-25 | 2015-04-01 | 淮南市华源矿用机电设备厂 | A kind of pneumatic sump pump being convenient to removal of impurities |
| CN105966586A (en) * | 2016-05-19 | 2016-09-28 | 武汉船用机械有限责任公司 | Impurity removing mechanism for water spraying propelling device |
-
2017
- 2017-03-21 CN CN201710170596.3A patent/CN107161311B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11115891A (en) * | 1997-10-09 | 1999-04-27 | Ishigaki:Kk | Screen device for water suction port of water jet propulsion ship |
| CN200992297Y (en) * | 2006-12-22 | 2007-12-19 | 中国舰船研究设计中心 | Foreign removing device for ship water-jetting propelling system |
| WO2009029624A1 (en) * | 2007-08-27 | 2009-03-05 | Yuting Rui | Weed-cutter for a craft propelled by a water jet |
| CN201161712Y (en) * | 2008-02-22 | 2008-12-10 | 芮应睿 | Mowing device capable of being used for spray water propulsion shipboard |
| CN204239346U (en) * | 2014-11-25 | 2015-04-01 | 淮南市华源矿用机电设备厂 | A kind of pneumatic sump pump being convenient to removal of impurities |
| CN105966586A (en) * | 2016-05-19 | 2016-09-28 | 武汉船用机械有限责任公司 | Impurity removing mechanism for water spraying propelling device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572744A (en) * | 2020-06-01 | 2020-08-25 | 中国船舶科学研究中心 | Hydraulic shear device for underwater winding of ship pump jet propeller |
| CN111572744B (en) * | 2020-06-01 | 2021-03-09 | 中国船舶科学研究中心 | Hydraulic shear device for underwater winding of ship pump jet propeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107161311B (en) | 2019-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107947043A (en) | A kind of power cable punck-down block | |
| CN107161311A (en) | A kind of knot screen of hydraulic jet propulsion system inlet channel | |
| CN108713854A (en) | A kind of brush roll clipping device | |
| CN201454948U (en) | Device for automatically removing attachments on metal tube inner wall | |
| CN211965288U (en) | Novel wine bottle cleaning equipment | |
| CN210710446U (en) | Hoisting device convenient for fixing parts | |
| CN202508611U (en) | Transverse-shifting mechanism for transmission assembly assembling line | |
| CN205324587U (en) | Dustless fastener gear rolling machine | |
| CN210550334U (en) | Wire rod surface polishing device | |
| CN215543494U (en) | Cylinder inner wall belt cleaning device | |
| CN201815561U (en) | Surface dust-removal device for steel wires and flux-cored wires | |
| CN214488223U (en) | Motor shaft cleaning device for motor production | |
| CN205309459U (en) | Sport type anchor chain burring device | |
| CN219839314U (en) | Movable pipeline cleaning machine | |
| CN216828138U (en) | Telescopic pedal device suitable for skin stretcher | |
| CN218081824U (en) | Stainless steel plate manufacturing device | |
| CN214561232U (en) | PVC pipe cutting machine for automatic telescopic door machining | |
| CN214109985U (en) | Steel pipe conveying device that decontaminates | |
| CN218607383U (en) | Paste processingequipment with adjustable wound cream thickness | |
| CN109926457A (en) | Duplex pinch roller | |
| CN207671136U (en) | A kind of hardware automatic cleaning apparatus | |
| CN213106056U (en) | Device for improving stainless steel processing efficiency | |
| CN220127113U (en) | Cleaning device in barrel | |
| CN218842446U (en) | Thread cutting device retracting mechanism of doffing trolley | |
| CN220217911U (en) | Stainless steel pipe surface wire drawing machine |
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 |