CN115076393A - Spiral double-blade drainage device - Google Patents

Spiral double-blade drainage device Download PDF

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Publication number
CN115076393A
CN115076393A CN202210732479.2A CN202210732479A CN115076393A CN 115076393 A CN115076393 A CN 115076393A CN 202210732479 A CN202210732479 A CN 202210732479A CN 115076393 A CN115076393 A CN 115076393A
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CN
China
Prior art keywords
drainage
blades
blade
transmission shaft
partition plate
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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
Application number
CN202210732479.2A
Other languages
Chinese (zh)
Inventor
臧延旭
梁雪婷
赵云利
田艳会
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North China Institute of Aerospace Engineering
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North China Institute of Aerospace Engineering
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by North China Institute of Aerospace Engineering filed Critical North China Institute of Aerospace Engineering
Priority to CN202210732479.2A priority Critical patent/CN115076393A/en
Publication of CN115076393A publication Critical patent/CN115076393A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
    • F16L55/28—Constructional aspects
    • F16L55/40—Constructional aspects of the body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2101/00—Uses or applications of pigs or moles
    • F16L2101/30—Inspecting, measuring or testing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention provides a spiral double-fan-blade drainage device which comprises a drainage shell, a transmission shaft and two fan blades. Three discharge holes are arranged on an inner partition plate in the discharge shell; the inner walls of the drainage shell positioned at two sides of the inner partition plate are respectively provided with at least one group of longitudinal slideway and transverse slideway which are mutually communicated; the transmission shaft is rotatably arranged in the drainage shell, and a first external thread section and a second external thread section which are respectively positioned at two sides of the inner partition plate and have opposite thread directions are arranged on the rotation shaft; the two fan blades are respectively arranged on the first external thread section and the second external thread section of the transmission shaft; each fan blade comprises a disc-shaped rotating disc and three blades which are uniformly distributed on the rotating disc in a circumferential manner; the blade is provided with a lug which can be inserted into the drainage hole; the lug of the two fan blades inserted into the same drainage hole can be sealed and filled in the drainage hole; when the transmission shaft rotates, the two fan blades can be driven to move away from or close to each other firstly, so that the drainage hole is opened or closed.

Description

Spiral double-blade drainage device
Technical Field
The invention relates to a drainage device, in particular to a spiral double-fan-blade drainage device for a detector of an oil and gas pipeline.
Background
In order to guarantee the conveying efficiency and the conveying safety of the long-distance pipeline, the pipeline needs to be periodically subjected to internal detection operation. Relevant standards and field application experience show that the running speed of the conventional pipeline leakage flux corrosion detector in oil and gas pipelines is less than 5 m/s. However, in recent years, newly-built natural gas pipelines have the characteristics of large caliber, high pressure and high medium flow rate, the upper limit of medium flow rate design generally reaches 10m/s, and a conventional pipeline detector cannot complete corresponding internal detection operation at all, so that the running speed of the detector in the natural gas pipeline must be reduced. The invention discloses a double-blade drainage device for a pipeline detector (application number 2020107997702) which is applied by the applicant in the prior Chinese invention patent, and the device utilizes two rotary blades which rotate in opposite directions to realize drainage rapidly, and the three blades have the same shape and can maximally realize 66.7 percent of drainage capacity. In the patent, a reverse bevel gear mechanism is utilized to realize the reverse rotation of two fan blades at the same speed. The rotary fan blade is hidden behind the fixed fan blade after being completely opened. Therefore, the reverse bevel gear mechanism is a key mechanism for realizing the simultaneous same-speed reverse rotation of the two fan blades.
Because a reverse bevel gear mechanism is needed, the mechanism is large in size and can occupy a certain flow discharge passage area when being installed in the central axis position of a pipeline, and the flow discharge capacity is influenced. The length of the mechanism is long, the mechanism needs to occupy a large axial size, and the cantilever beam structure is similar to a cantilever beam structure, so that the auxiliary mechanism needs to be thick to ensure the stability and strength of the mechanism, the drainage area can be wasted, and the weight of equipment is increased. When the caliber of the pipeline is less than 300, the drainage area occupied by the auxiliary mechanism is not negligible. Since the reverse bevel gear mechanism requires a plurality of gears, the manufacturing accuracy and manufacturing cost thereof are large. The fan blades are arranged in a mode of moving fan blades, moving fan blades and static fan blades, when the fan blades are in a completely closed state, a gap exists between the moving fan blades at the foremost end and the static fan blades in the axial direction, this is a structural drawback and cannot be reduced by reducing the axial dimension of the intermediate moving blade, since once the intermediate moving blade is reduced in thickness, its strength and rigidity are insufficient, therefore, the mechanism is leaked when the rotating action of the fan blades is not started, which is the most critical, the condition is obviously unavailable for a certain medium flow rate condition, since a leakage flow may result in the device not being able to build up a sufficient pressure difference to start operation, that is, in some cases, the detection device may be subjected to an insufficient pressure difference during the start-up phase, the thrust of the medium applied to the detection device is not enough to overcome the friction force between the device and the pipeline, so that the detection device cannot enter the main pipeline from the device transceiving pipe.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the spiral double-blade flow-discharging device which is simple in structure and can better seal two blades in a closed state.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
According to one aspect of the invention, a helical dual-blade drain device comprises:
the drainage shell is of a cylindrical structure, an inner channel through which a medium can flow is formed in the drainage shell, an inner partition plate for partitioning the inner channel is arranged in the drainage shell, three fan-shaped drainage holes which are uniformly distributed along the central axis of the drainage shell in a circumferential manner are arranged on the inner partition plate, and the drainage holes are communicated with the inner channels on two sides of the inner partition plate; the inner walls of the drainage shell, which are positioned at two sides of the inner partition plate, are respectively provided with at least one group of longitudinal slideways and transverse slideways which are mutually communicated;
the transmission shaft is rotatably arranged in the drainage shell and is coaxial with the central axis of the drainage shell, the middle part of the transmission shaft is rotatably connected to the inner partition plate, and a first external thread section and a second external thread section which are respectively positioned on two sides of the inner partition plate and have opposite thread directions are arranged on the transmission shaft;
the two fan blades are respectively arranged on the first external thread section and the second external thread section of the transmission shaft; each fan blade comprises a disc-shaped rotating disc and three blades which are uniformly distributed on the rotating disc in a circumferential manner; the center of the rotary disc is provided with a central threaded hole matched with the first external threaded section or the second external threaded section, and the blades are provided with lugs capable of being inserted into the drainage holes; the lug of the two fan blades inserted into the same drainage hole can be sealed and filled in the drainage hole; the outer end part of at least one blade of each fan blade is provided with a rolling piece which is in rolling fit with the longitudinal slideway; wherein the content of the first and second substances,
when the transmission shaft rotates along the first clock hand direction, the two fan blades can be driven to firstly move away from each other, and then the rolling pieces of the blades enter the transverse slide way from the longitudinal slide way, so that the blades and the convex blocks avoid the drainage hole;
when the transmission shaft rotates along the second hour-hand direction, the transmission shaft can firstly drive the rolling parts of the two blades to enter the longitudinal slideway from the transverse slideway, and then the two blades are mutually close to each other, so that the convex block enters the drainage hole.
According to an embodiment of the invention, the rolling elements are deep groove ball bearings.
According to an embodiment of the invention, the deep groove ball bearing is mounted to the outer end of the blade by means of screws.
According to an embodiment of the invention, the longitudinal runners and the transverse runners are provided in three groups, corresponding to three blades respectively.
According to the technical scheme, the invention has the advantages and positive effects that:
according to the spiral double-blade drainage device, the first external thread section and the second external thread section with opposite thread turning directions are arranged on the transmission shaft to drive the two blades to slide in the longitudinal slide way and the transverse slide way, so that the lug can open or close the drainage hole in the inner partition plate, the structure is simple and compact, and the drainage area is not occupied like a reverse bevel gear mechanism in the prior art. The sealing filling of the drain opening by the projection makes it possible to achieve a better sealing in the closed state.
Drawings
The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 is a schematic perspective view of a helical bilobe flow-off device according to an embodiment of the present invention;
FIG. 2 is an exploded view of the spiral dual blade bleed device of FIG. 1;
FIG. 3 is a schematic front view of the vent housing of FIG. 1;
FIG. 4 is a schematic cross-sectional view of the vent housing shown in FIG. 3;
FIG. 5 is a schematic perspective view of the vent housing shown in FIG. 3;
FIG. 6 is a schematic view of the first fan blade shown in FIG. 2;
FIG. 7 is a schematic view of the second blade of FIG. 2;
fig. 8 is a schematic structural view of the propeller shaft 2 in fig. 1.
In the figure: 1. a drain housing; 11. an inner partition plate; 12. a vent hole; 13. a longitudinal slideway; 14. a transverse slideway; 15. a longitudinal slideway; 16. a transverse slideway; 17. a central bearing bore; 2. a drive shaft; 21. a first external thread section; 22. a second external thread segment; 3. a first fan blade; 31. a turntable; 32. a central threaded hole; 33. a blade; 34. a bump; 35. a deep groove ball bearing; 36. a screw; 4. a second fan blade; 41. a turntable; 42. a central threaded hole; 43. a blade; 44. a bump; 45. a deep groove ball bearing; 46. a screw; 5. and (4) end covers.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
As shown in fig. 1 to 8, the embodiment of the invention discloses a spiral dual-blade drainage device. The device is installed on a detection device for detecting a pipeline for oil or gas transmission. The spiral double-blade drainage device comprises a drainage shell 1, a transmission shaft 2, a first blade 3 and a second blade 4.
Referring to fig. 1 to 5, in the present embodiment, the drain case 1 has a cylindrical structure. The interior of the drain housing 1 forms an inner channel through which the medium can flow. An inner partition plate 11 for partitioning the inner channel is arranged in the discharge shell 1, three fan-shaped discharge holes 12 which are uniformly distributed along the central axis of the discharge shell 1 in a circumferential mode are formed in the inner partition plate 11, and the discharge holes are communicated with the inner channels on two sides of the inner partition plate 11. When the device is used, the front and the back of the outer part of the drainage shell 1 are respectively provided with a circular disc type leather cup matched with detection equipment, the drainage shell 1 is supported by the leather cups, and the outer edge of the leather cup is tightly attached to the inner wall of a pipeline to realize sealing, so that a medium cannot flow through the outer part of the drainage shell 1 and only can flow through an inner channel of the drainage shell 1. By opening or closing the drain hole 12 of the inner partition 11, the medium can be allowed or prevented from passing through the inner passage. When the transported substance in the pipeline is oil such as petroleum and diesel oil, the medium is the oil. When the transported substance in the pipeline is natural gas, the medium is natural gas.
The inner walls of the drainage shell 1 at two sides of the inner partition 11 are respectively provided with at least one group of longitudinal slideway and transverse slideway which are mutually communicated. Specifically, a longitudinal slideway 13 and a transverse slideway 14 are arranged on one side of the inner clapboard 11, and a longitudinal slideway 15 and a transverse slideway 16 are arranged on the other side of the inner clapboard 11. In the present embodiment, the extending direction of the longitudinal runners is parallel or substantially parallel to the axial direction of the effusion housing 1, while the extending direction of the lateral runners is in a direction around the axis of the effusion housing 1.
As shown in fig. 2 and 8, the transmission shaft 2 is rotatably disposed in the drainage casing 1 and is coaxial with the central axis of the drainage casing, the middle portion of the transmission shaft 2 is rotatably connected to the inner partition 11, and the transmission shaft 2 is provided with a first external thread section 21 and a second external thread section 22, which are respectively located on two sides of the inner partition 11 and have opposite thread directions. A central bearing hole 17 is arranged in the middle of the inner clapboard 11, the middle of the transmission shaft 2 is arranged on the central bearing hole 17 through a bearing, two ends of the drainage shell 1 are also provided with detachable end covers 5, and one end cover 5 is provided with a bearing matched with the transmission shaft 2. The drive shaft 2 is freely rotatable supported by the two bearings.
The first blade 3 is mounted on a first external thread section 21 of the drive shaft 2 and the second blade 4 is mounted on a second external thread section 22 of the drive shaft 2. The first blade 3 and the second blade 4 are identical parts. The first fan blade 3 comprises a disc-shaped rotating disc 31 and three blades 33 evenly distributed circumferentially on the rotating disc 31. A central threaded hole 32 to be fitted to the first male threaded section 21 is provided in the center of the first blade 3, and a projection 34 to be inserted into the drain hole 12 is provided on the blade 33.
The second fan blade 4 comprises a disc-shaped rotating disc 41 and three blades 43 evenly distributed circumferentially on the rotating disc 41. A central threaded hole 42 is provided in the center of the second blade 4 for engagement with the second male thread section 22, and a projection 44 is provided on the blade 43 for insertion into the drain hole 12.
The protrusions 34 and 44 of the first blade 3 and the second blade 4 can be inserted into the same drain hole 12 from two sides of the inner partition 11, and one protrusion 34 and one protrusion 44 can be inserted into each of three drain holes 12. The protrusion 34 and protrusion 44 are capable of sealingly filling the drain hole 12, where the sealed filling does not completely close the drain hole 12, but rather means that the protrusion 34 and protrusion 44 occupy more than 85% of the internal cross-sectional area of the drain hole 12, thereby generating a sufficient pressure differential.
The outer end of at least one blade 33 of the first blade 3 is provided with rolling elements which are in rolling fit with the longitudinal slideway 13, in the present embodiment, the longitudinal slideway 13 and the transverse slideway 14 are provided in three groups, and the three blades 33 of the first blade 3 are provided with rolling elements which are deep groove ball bearings 35 in the present embodiment, and the deep groove ball bearings 35 are mounted with the outer ends of the blades 33 through screws 36. The rolling member may be of other construction such as a rolling ring and is attached to the vane 33 by a central shaft or the like passing through the rolling ring.
The outer ends of at least two blades 43 of the second fan blade 4 are provided with rolling members which form a rolling fit with the longitudinal slide way 15, in the present embodiment, three sets of the longitudinal slide way 15 and the transverse slide way 16 are provided, and the three blades 43 of the second fan blade 4 are provided with the rolling members, in the present embodiment, the rolling members are deep groove ball bearings 45, and the deep groove ball bearings 45 are mounted with the outer ends of the blades 43 through screws 46. The rolling member may be a rolling ring or other structure and is connected to the vane 43 by a central shaft or the like passing through the rolling ring.
The use of the present helical dual-bladed flow discharge device is described below.
When the first fan blade 3 and the second fan blade 4 are installed on the transmission shaft 2, the deep groove ball bearing 35 and the deep groove ball bearing 45 are respectively positioned in the longitudinal slide way 13 and the longitudinal slide way 15 on both sides of the inner partition plate 11.
When the transmission shaft 2 rotates in the first direction, the transmission shaft 2 can drive the first fan blade 3 and the second fan blade 4 away from each other because the thread directions of the first external thread section 21 and the second external thread section 22 of the transmission shaft 2 are opposite, and in the process, the lug 34 and the lug 34 move out of the drain hole 12 of the inner partition plate 11, and the drain hole 12 is opened. As the drive shaft 2 continues to rotate, the deep groove ball bearing 35 of the first blade 3 reaches the outermost end of the longitudinal slide 13 and into the transverse slide 14, and the deep groove ball bearing 45 of the second blade 4 reaches the outermost end of the longitudinal slide 15 and into the transverse slide 16. Thereafter, the driving shaft 2 drives the first blade 3 and the second blade 4 to rotate due to the restriction of the lateral slide ways 14 and 16, so that the blades and the protrusions of the first blade 3 and the second blade 4 avoid the drainage hole 12.
When the transmission shaft 2 rotates along the second clockwise direction, the deep groove ball bearings of the two blades are driven to enter the longitudinal slide way from the transverse slide way, and then the two blades are close to each other, so that the convex block enters the drainage hole, and the drainage hole is closed. The first hour hand direction and the second hour hand direction referred to herein are opposite rotational directions, for example, when the first hour hand direction is clockwise, the second hour hand direction is counterclockwise.
In summary, in the spiral dual-blade drainage device according to the embodiment of the present invention, the first external thread section 21 and the second external thread section 22 with opposite thread directions are disposed on the transmission shaft 2 to drive the two blades to slide in the longitudinal slideway and the transverse slideway, so that the protrusion can open or close the drainage hole on the inner partition, and the spiral dual-blade drainage device has a simple and compact structure, and does not occupy a drainage area as a reverse bevel gear mechanism in the prior art. The sealing filling of the drain opening by the projection makes it possible to achieve a better sealing in the closed state.
Exemplary embodiments of the present invention are specifically illustrated and described above. It is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (4)

1. A helical dual-bladed flow-discharge device, comprising:
the drainage shell is of a cylindrical structure, an inner channel through which a medium can flow is formed in the drainage shell, an inner partition plate for partitioning the inner channel is arranged in the drainage shell, three fan-shaped drainage holes which are uniformly distributed along the central axis of the drainage shell in a circumferential manner are arranged on the inner partition plate, and the drainage holes are communicated with the inner channels on two sides of the inner partition plate; the inner walls of the drainage shell, which are positioned at two sides of the inner partition plate, are respectively provided with at least one group of longitudinal slideways and transverse slideways which are mutually communicated;
the transmission shaft is rotatably arranged in the drainage shell and is coaxial with the central axis of the drainage shell, the middle part of the transmission shaft is rotatably connected to the inner partition plate, and a first external thread section and a second external thread section which are respectively positioned at two sides of the inner partition plate and have opposite thread directions are arranged on the rotation shaft;
the two fan blades are respectively arranged on the first external thread section and the second external thread section of the transmission shaft; each fan blade comprises a disc-shaped rotating disc and three blades which are uniformly distributed on the rotating disc in a circumferential manner; the center of the rotary disc is provided with a central threaded hole matched with the first external threaded section or the second external threaded section, and the blades are provided with lugs capable of being inserted into the drainage holes; the convex blocks of the two fan blades inserted into the same vent hole can be sealed and filled in the vent hole; the outer end part of at least one blade of each fan blade is provided with a rolling piece which is in rolling fit with the longitudinal slideway; wherein the content of the first and second substances,
when the transmission shaft rotates along the first clock hand direction, the two fan blades can be driven to firstly move away from each other, and then the rolling pieces of the blades enter the transverse slide way from the longitudinal slide way, so that the blades and the convex blocks avoid the drainage hole;
when the transmission shaft rotates along the second hour-hand direction, the transmission shaft can firstly drive the rolling parts of the two blades to enter the longitudinal slideway from the transverse slideway, and then the two blades are mutually close to each other, so that the convex block enters the drainage hole.
2. The helical dual blade flow leakage apparatus according to claim 1, wherein said rolling elements are deep groove ball bearings.
3. The spiral dual-fan blade flow-discharging device as claimed in claim 2, wherein the deep groove ball bearing is mounted to the outer end of the blade by a screw.
4. The spiral dual-blade flow-discharging device of claim 1, wherein the longitudinal runners and the transverse runners are provided in three groups, corresponding to three blades respectively.
CN202210732479.2A 2022-06-27 2022-06-27 Spiral double-blade drainage device Pending CN115076393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210732479.2A CN115076393A (en) 2022-06-27 2022-06-27 Spiral double-blade drainage device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210732479.2A CN115076393A (en) 2022-06-27 2022-06-27 Spiral double-blade drainage device

Publications (1)

Publication Number Publication Date
CN115076393A true CN115076393A (en) 2022-09-20

Family

ID=83256393

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210732479.2A Pending CN115076393A (en) 2022-06-27 2022-06-27 Spiral double-blade drainage device

Country Status (1)

Country Link
CN (1) CN115076393A (en)

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