CN112240036A - Self-rotating spray head for dredger harrow head - Google Patents
Self-rotating spray head for dredger harrow head Download PDFInfo
- Publication number
- CN112240036A CN112240036A CN201910641682.7A CN201910641682A CN112240036A CN 112240036 A CN112240036 A CN 112240036A CN 201910641682 A CN201910641682 A CN 201910641682A CN 112240036 A CN112240036 A CN 112240036A
- Authority
- CN
- China
- Prior art keywords
- rotating
- head
- sealing
- self
- rotating shaft
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9256—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head
- E02F3/9262—Active suction heads; Suction heads with cutting elements, i.e. the cutting elements are mounted within the housing of the suction head with jets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention discloses a self-rotating spray head for a dredging ship drag head, which comprises a rotating head, a rotating shaft assembly, a spray head shell, a jet flow inlet and a sealing bush, wherein the rotating head and the rotating shaft are connected together in a screwed mode, the outer portion of the rotating head is made of a metal material, and the inner portion of the rotating head is of a hollow structure. The rotation axis subassembly comprises rotation axis and sealing rod to lived by shower nozzle shell parcel, rotation axis and sealing rod are hollow structure, and the sealing rod is installed in the inside of rotation axis, and the efflux entrance of rotation axis passes through screw thread fixed connection with the shower nozzle shell, and the efflux entrance adopts the tapered structure, passes through screw thread fixed connection with the shower nozzle shell. The device of the present invention can increase the working efficiency of the dredging ship, increase the area for breaking the dredged objects, reduce the area of dead working corner, and prevent the blockage of the drag head.
Description
Technical Field
The invention belongs to the technical field of dredging devices, and particularly relates to a self-rotating spray head for a dredging ship drag head.
Background
At present, a trailing suction dredger sails and carries out dredging operation while working, the dredging dredger drives a drag head to move when sailing, a spray head arranged on the drag head sprays high-pressure water flow to break soil, then the broken soil is sucked into a mud cabin through the action of a pump, and mud is thrown when the ship sails to a mud throwing area. However, since the nozzles of the dredging boat head are fixed on the head, the high-pressure flushing water jet is discharged in a fan shape, which results in a blank area between the high-pressure water streams discharged from two adjacent nozzles, and the clay passing through the blank area is relatively less cut, which affects the dredging efficiency, while if a double-layer head is used, the resistance during dredging is increased, which is not ideal.
Disclosure of Invention
The object of the present invention is to provide a self-rotating nozzle for a dredger rake head, which increases the working area of the dredger, reduces dead angles, increases the efficiency of breaking soil at the rake head, prevents dredging objects from blocking the rake head, is easy to install, and is not easily damaged under dredging conditions.
The technical scheme adopted by the invention for solving the technical problems is as follows: the self-rotating spray head for the dredging ship harrow head comprises a rotating head, a rotating shaft assembly, a spray head shell and a jet inlet; the interior of the rotating head is of a hollow structure; the rotating shaft assembly consists of a rotating shaft and a sealing rod, the rotating shaft and the sealing rod are both of hollow structures, and the sealing rod is installed inside the rotating shaft.
According to above-mentioned technical scheme, use bolted connection together between rotating head and the rotation axis, the rotating head outside is metal material, and the efflux entrance and the shower nozzle shell of rotation axis pass through screw thread fixed connection.
According to the technical scheme, the jet inlet is of a tapered structure and is fixedly connected with the spray head shell through threads.
According to the technical scheme, the rotating shaft is not tightly connected with the sealing rod, and the sealing rod is provided with a plurality of annular grooves for placing the sealing rings.
According to the technical scheme, the two sides of the rotating head are provided with eccentric holes. When high-pressure water flows through the hollow stepped rotating shaft and is sprayed out through the eccentric hole on the cleaning head, the cleaning head and the rotating shaft rotate immediately due to pressure difference, so that the water flow is sprayed out by the nozzle in a rotating manner, and the work of breaking soil and dredging is finished.
According to the technical scheme, the rotating shaft is in a step shape, and the middle part of the rotating shaft is drilled with the through hole. When high-pressure water flows into the inner hole of the stepped rotating shaft from the water inlet joint, the high-pressure water flows into a gap sealing area formed between the inner hole of the stepped sealing shell and the excircle of the stepped rotating shaft through the through hole in the middle of the stepped rotating shaft.
According to the technical scheme, the rear half shell of the spray head shell can be provided with the spray hole communicated with the rotating shaft.
According to the technical scheme, the water inlet device further comprises a sealing bush, a gap sealing mode is adopted between the sealing bush and the front end of the water inlet, and the water discharge amount is regulated and controlled by regulating and controlling the size of a gap between the sealing bush and the front end of the water inlet. In addition, due to the existence of the water drainage holes, water at the gap can uniformly flow out to two sides, the balance force of the spray head is increased, a water film is formed between the sealing bush and the front end of the water inlet, the water film has the functions of lubrication and support, and one part of the water film which finally becomes low-pressure water flow is discharged outwards from the drainage hole formed in the combined rotating body, and the other part of the water film is discharged outwards from a gap between the sealing bush and the contact end face between the water inlet joint.
According to the technical scheme, the rubber sealing ring is adopted between the jet flow inlet and the sealing rod for hydrostatic sealing.
According to the technical scheme, the plastic sealing ring is adopted between the rotating shaft and the eccentric hole in the rotating head for hydrostatic sealing.
The rotating rod part adopts fluid dynamic pressure sealing in non-contact gap sealing, water flow is jetted out from an eccentric hole of the rotating head, the generated pressure difference enables the rotating head to start rotating, at the moment, the rotating shaft and the shell rotate together, the sealing rod is kept static, and because direct contact is not available, friction force is almost not available between the rotating shaft and the shell, and the abrasion degree is small.
The invention has the following beneficial effects: increase the working area of the dredging ship, reduce dead angles, improve the soil breaking efficiency of the drag head, prevent the dredging objects from blocking the drag head, and is easy to install and not easy to damage under the dredging working condition.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a front view of a self-rotating showerhead in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is a schematic structural view of a drag head of a dredger according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In an embodiment of the present invention, there is provided a self-rotating sprinkler head for a dredger rake head, as shown in fig. 1-3, comprising a rotating head 1, a rotating shaft assembly 2, a sprinkler housing 3, a jet inlet 4; the interior of the rotating head is of a hollow structure; the rotating shaft assembly consists of a rotating shaft 2-1 and a sealing rod 2-2, the rotating shaft assembly is wrapped by the sprayer shell, the rotating shaft and the sealing rod are both of a hollow structure, and the sealing rod is installed inside the rotating shaft. The rotating head is connected with the rotating shaft through bolts, the metal material is arranged outside the rotating head, the jet inlet of the rotating shaft is fixedly connected with the sprayer shell through threads, the jet inlet adopts a tapered structure and is fixedly connected with the sprayer shell through threads, the rotating shaft is not connected with the sealing rod tightly, and a plurality of annular grooves are formed in the sealing rod and used for placing sealing rings. Eccentric holes are arranged on two sides of the rotating head. When high-pressure water flows through the hollow stepped rotating shaft and is sprayed out through the eccentric hole on the cleaning head, the rotating head 1 and the rotating shaft rotate immediately due to pressure difference, so that the spray head rotationally sprays water flow, and the work of breaking soil and dredging is completed. The middle part of the stepped rotating shaft is drilled with a through hole, and when high-pressure water flows into the inner hole of the stepped rotating shaft from the water inlet joint, the high-pressure water flows into a gap sealing area formed between the inner hole of the stepped sealing shell and the excircle of the stepped rotating shaft through the through hole in the middle part of the stepped rotating shaft. The rear half shell of the nozzle shell can also be provided with a jet hole 5 communicated with the rotating shaft. The water inlet device also comprises a sealing bush, a gap sealing mode is adopted between the sealing bush and the front end of the water inlet, and the water discharge amount is regulated and controlled by regulating and controlling the size of a gap between the sealing bush and the front end of the water inlet. In addition, due to the existence of the water drainage holes, water at the gap can uniformly flow out to two sides, the balance force of the spray head is increased, a water film is formed between the sealing bush and the front end of the water inlet, the water film has the functions of lubrication and support, and one part of the water film which finally becomes low-pressure water flow is discharged outwards from the drainage hole formed in the combined rotating body, and the other part of the water film is discharged outwards from a gap between the sealing bush and the contact end face between the water inlet joint.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A self-rotating spray head used on a dredging boat drag head is characterized by comprising a rotating head, a rotating shaft assembly, a spray head shell and a jet flow inlet; the interior of the rotating head is of a hollow structure; the rotating shaft assembly consists of a rotating shaft and a sealing rod, the rotating shaft and the sealing rod are both of hollow structures, and the sealing rod is installed inside the rotating shaft.
2. The self-rotating sprinkler head for a dredge dredger rake according to claim 1, wherein the rotating head is bolted to the rotating shaft, the rotating head is made of metal material on the outside, and the jet inlet of the rotating shaft is fixedly connected to the sprinkler head housing by means of a screw.
3. Self-rotating nozzle for a dredger rake according to claim 1 or 2, characterized in that the jet inlet is of a tapered design and is fixedly connected to the nozzle housing by means of a screw thread.
4. Self-rotating nozzle for a dredging vessel rake head according to claim 1 or 2, wherein the rotating shaft is not tightly connected to the sealing rod, which is provided with a plurality of annular grooves for receiving the sealing rings.
5. Self-rotating nozzle for a dredging vessel drag head according to claim 1 or 2, characterized in that the rotating head is provided with eccentric holes on both sides.
6. Self-rotating nozzle for a dredger rake according to claim 1 or 2, characterized in that the rotation shaft is stepped, the middle of the rotation shaft being drilled with a through hole.
7. Self-rotating nozzle for a dredger rake according to claim 1 or 2, characterized in that the rear half of the nozzle housing is also provided with injection holes communicating with the rotation axis.
8. The self-rotating sprinkler head for a dredger rake head according to claim 1 or 2, further comprising a sealing bushing, wherein the sealing bushing and the front end of the water inlet are in the form of gap sealing, and the amount of water discharge is controlled by controlling the size of the gap between the sealing bushing and the front end of the water inlet.
9. Self-rotating nozzle for a dredging vessel rake head according to claim 1 or 2, wherein a rubber sealing ring is used between the jet inlet and the sealing rod for hydrostatic sealing.
10. Self-rotating nozzle for a dredging vessel drag head according to claim 1 or 2, characterized in that a plastic sealing ring is used for hydrostatic sealing between the rotating shaft and the eccentric bore in the rotating head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641682.7A CN112240036A (en) | 2019-07-16 | 2019-07-16 | Self-rotating spray head for dredger harrow head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641682.7A CN112240036A (en) | 2019-07-16 | 2019-07-16 | Self-rotating spray head for dredger harrow head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112240036A true CN112240036A (en) | 2021-01-19 |
Family
ID=74167277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910641682.7A Pending CN112240036A (en) | 2019-07-16 | 2019-07-16 | Self-rotating spray head for dredger harrow head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112240036A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140310997A1 (en) * | 2013-04-17 | 2014-10-23 | Christopher J. Wyatt | Cavitating water jet hard rock dredge mining system |
| CN106193157A (en) * | 2016-08-31 | 2016-12-07 | 中交烟台环保疏浚有限公司 | Trailing suction hopper dredger drag head |
| CN106423603A (en) * | 2016-11-16 | 2017-02-22 | 天津福禄机电设备有限公司 | High pressure water noise-reduction spinning nozzle |
| CN206034522U (en) * | 2016-08-31 | 2017-03-22 | 中交烟台环保疏浚有限公司 | A spray nozzle system that is used for owner of rake head mechanism rake head |
-
2019
- 2019-07-16 CN CN201910641682.7A patent/CN112240036A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140310997A1 (en) * | 2013-04-17 | 2014-10-23 | Christopher J. Wyatt | Cavitating water jet hard rock dredge mining system |
| CN106193157A (en) * | 2016-08-31 | 2016-12-07 | 中交烟台环保疏浚有限公司 | Trailing suction hopper dredger drag head |
| CN206034522U (en) * | 2016-08-31 | 2017-03-22 | 中交烟台环保疏浚有限公司 | A spray nozzle system that is used for owner of rake head mechanism rake head |
| CN106423603A (en) * | 2016-11-16 | 2017-02-22 | 天津福禄机电设备有限公司 | High pressure water noise-reduction spinning nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7546959B2 (en) | Cleaning nozzle | |
| WO2016112590A1 (en) | Anti-back-splashing sandblasting perforator | |
| CN107116481B (en) | Abrasive water jet nozzle | |
| CN201692903U (en) | Water-saving spray nozzle | |
| CN206563004U (en) | A kind of mechanism for suppressing centrifugal pump impeller inlet return whirlpool | |
| CN106678082B (en) | A kind of mechanism inhibiting centrifugal pump impeller inlet return whirlpool | |
| CN112240036A (en) | Self-rotating spray head for dredger harrow head | |
| CN202113965U (en) | Rotary nozzle | |
| CN206676589U (en) | A kind of sprinkling truck water-saving spray head | |
| CN209898077U (en) | Shower nozzle device that agricultural unmanned aerial vehicle irrigated usefulness | |
| CN116378008A (en) | Multiple high-pressure grouting injection device for building construction | |
| CN110206132A (en) | A kind of urban Underground pipeline dredging is nozzle specially used | |
| CN210474358U (en) | High-speed jet rotatable nozzle | |
| CN108331695B (en) | A kind of hydroturbine | |
| CN212285069U (en) | Cutter disc flushing device based on rotary water jet cutter | |
| CN204754899U (en) | Novel water conservancy slot shower nozzle | |
| CN210726257U (en) | Water-saving irrigation sprinkling irrigation device | |
| CN113460278A (en) | Novel small and medium-sized ship water jet propulsion device | |
| CN215886499U (en) | Vaneless submersible water impeller | |
| CN207823233U (en) | A kind of high pressure self-rotating nozzle | |
| CN212468559U (en) | Hard alloy swirl nozzle | |
| CN215389741U (en) | Grinding machine with water spraying device | |
| CN213508867U (en) | High-pressure water-driven rotating head for pipeline dredging | |
| CN212065185U (en) | Spray set that afforestation used | |
| CN217517177U (en) | Rinsing nozzle for dye vat |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210119 |