CN110862115A - Double-flow water cap for realizing positive flow larger than reverse flow by utilizing flow-limiting fins - Google Patents

Double-flow water cap for realizing positive flow larger than reverse flow by utilizing flow-limiting fins Download PDF

Info

Publication number
CN110862115A
CN110862115A CN201911385736.4A CN201911385736A CN110862115A CN 110862115 A CN110862115 A CN 110862115A CN 201911385736 A CN201911385736 A CN 201911385736A CN 110862115 A CN110862115 A CN 110862115A
Authority
CN
China
Prior art keywords
flow
limiting
hole
valve seat
positive
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
Application number
CN201911385736.4A
Other languages
Chinese (zh)
Other versions
CN110862115B (en
Inventor
李小军
闫锟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Thermal Power Research Institute Co Ltd
Original Assignee
Xian Thermal Power Research Institute Co Ltd
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 Xian Thermal Power Research Institute Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Priority to CN201911385736.4A priority Critical patent/CN110862115B/en
Publication of CN110862115A publication Critical patent/CN110862115A/en
Application granted granted Critical
Publication of CN110862115B publication Critical patent/CN110862115B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/40—Liquid flow rate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/14—Maintenance of water treatment installations

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Safety Valves (AREA)

Abstract

The invention discloses a double-flow water cap for realizing positive flow larger than reverse flow by utilizing a flow-limiting wing plate. The invention realizes two speeds of positive flow and reverse flow of the water cap by the cooperation of the flow-limiting valve seat and the flow-limiting wing. The bottom of the flow-limiting valve seat is provided with a hole, and the effective flow area of the hole is matched with the positive flow of the water cap. The flow-limiting wing is designed into a three-blade type, the upper surface of the flow-limiting wing is a plane, the lower part of the flow-limiting wing is provided with a flow-supporting rib, and the height of the flow-supporting rib is designed and calculated according to the positive flow of the water cap. The effective flow area generated by the combination surface of the flow-limiting wing and the flow-limiting valve seat is matched with the reverse flow of the water cap, namely, during positive flow, the flow is limited by the hole of the flow-limiting valve seat, and during reverse flow, a reverse flow effective through hole is formed by the combination surface of the flow-limiting wing and the flow-limiting valve seat to limit the flow.

Description

Double-flow water cap for realizing positive flow larger than reverse flow by utilizing flow-limiting fins
Technical Field
The invention belongs to the technical field of water treatment, and relates to a double-flow water cap for realizing positive flow larger than reverse flow by utilizing a flow-limiting wing panel.
Background
The water cap is a water distribution component commonly used in ion exchangers and various filters. Generally, a perforated plate divides the interior of the equipment into two chambers, and a proper water cap is arranged on the hole to enable water to penetrate through but not filler, so that the effects of uniform water distribution and isolation are achieved.
The present commonly used double-speed water cap is composed of a cover, a trapezoidal wire-wound short tube, a check valve seat, a check valve flap, a seamed lamination, a bottom plate, a rubber pad and a fixed base. When the forward flow filters water, the check valve clack falls down, and water flows in from the gap of the trapezoidal wire winding short pipe, bypasses the check valve clack through the hole on the check valve seat and flows out from the hole of the porous plate. During countercurrent, the medium flows in from the hole of the porous plate from bottom to top, the check valve clack is lifted to block the hole in the check valve seat, and the medium cannot flow out from the gap of the trapezoidal wire winding short pipe but flows out from the gap of the slotted lamination. The positive flow and the reverse flow of the water cap have different flow rates, so the water cap is called a double-speed water cap. The water cap is limited by the flow area of the slotted lamination, and the reverse flow can only be controlled in a small range, for example, the flow area of the slotted lamination is increased, the lamination gap is larger, the filler cannot be isolated, and the filler is leaked, so the water cap is more suitable for process equipment which flows water positively and flows air reversely.
Therefore, it is necessary to develop a two-speed water cap, which can realize the different and larger flow rates of the positive flow and the reverse flow, and the flow rate can be adjusted by replacing local parts so as to meet the requirements of different processes.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a double-flow water cap for realizing the positive flow rate larger than the reverse flow rate by utilizing a flow-limiting fin, which is mainly used in equipment requiring the positive flow rate larger than the reverse flow rate, a high-speed mixed bed, a resin separation tower and the like.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a dual flow water cap utilizing flow restricting flaps to achieve positive flow greater than reverse flow, comprising:
the positioning base is hermetically arranged at the bottom of the isolating porous plate, a square positioning hole is formed in the center of the positioning base, and a first flow through hole is formed in the periphery of the square positioning hole;
the central screw rod is a round-head square-neck screw rod and penetrates out of the bottom of the positioning base upwards, and the square-neck part is sleeved in the square positioning hole of the positioning base; the central screw rod is sequentially sleeved with the end cover, the flow-limiting valve seat and the flow-limiting wing panel from top to bottom;
the center of the end cover is provided with a through hole, and the central screw rod penetrates out of the through hole;
the flow-limiting valve seat is of a flat-bottom bowl-shaped structure, the diameter of the bowl opening is larger than that of the bowl bottom, the bowl opening is arranged downwards, and the bowl bottom is provided with a second flow through hole; the bowl opening of the flow-limiting valve seat is hermetically connected with the isolating porous plate;
the flow-limiting fin comprises at least 3 fins, the upper bottom surface of each fin is a plane, and the lower bottom surface of each fin is an overflow bearing rib of which the thickness gradually decreases from the center of each fin to the edge of each fin; the flow limiting wing pieces can move up and down along the water flow direction by taking the central fixed rod as an axis;
the trapezoidal wire winding short pipe is hermetically arranged between the end cover and the flow-limiting valve seat.
The invention further improves the following steps:
the edge of the end cover is provided with a bent edge bent downwards, the bowl opening of the flow-limiting valve seat is provided with a bent edge bent outwards, the top of the trapezoidal wire-winding short pipe is arranged on the inner side of the bent edge at the edge of the end cover, and the bottom of the trapezoidal wire-winding short pipe is arranged on the bowl opening bent edge of the flow-limiting valve seat.
The edge of keeping away from the center of first class through-hole sets up the first spacing neck of upwards buckling, first spacing neck cover is located the centre bore bottom of keeping apart the perforated plate to it is sealed with the isolation perforated plate through the rubber mat is sealed.
A limiting bottom plate is further arranged between the bowl opening of the flow limiting valve seat and the isolating porous plate, the limiting bottom plate is of a hollow circular ring structure, the outer edge of the limiting bottom plate is a bent edge which is bent upwards, and the bent edge of the bowl opening of the flow limiting valve seat is positioned on the inner side of the bent edge of the limiting bottom plate; the inner side edge is bent downwards to form a second limiting neck, and the second limiting neck is sleeved at the top of a central hole of the isolating porous plate.
The bottom surface of the limiting bottom plate is provided with a rubber pad, and the limiting bottom plate and the isolating porous plate are sealed through the rubber pad.
The winding gap of the trapezoidal winding short pipe is smaller than the minimum particle size of the isolated filler, and the flow area is larger than the flow area required by positive flow and counter flow.
The effective flow area of the first flow through hole is larger than that of the second flow through hole.
An effective flow area S of the second flow hole1And positive flow rate Q1The following relationship is satisfied:
Figure BDA0002342383610000031
wherein V is the design flow rate; r1The opening radius of the second flow through hole; r is the radius of the outer edge of a central screw hole formed in the flow-limiting valve seat.
The height h of the overflowing supporting rib close to the center meets the following relation:
Figure BDA0002342383610000032
Figure BDA0002342383610000033
wherein h is1Calculating the height of the flow support rib close to the center; r2The outer radius of the flow restricting fin; theta is the arc angle between adjacent ones of the flow restricting vanes.
When the flow-limiting wing piece is jointed with the flow-limiting valve seat, the effective flow area S generated by the joint surface of the flow-limiting wing piece and the flow-limiting valve seat3And a reverse flow rate Q2The following relationship is satisfied:
Figure BDA0002342383610000034
wherein V is the design flow rate; r1The opening radius of the second flow through hole; r is the radius of the outer edge of a central screw hole formed in the flow-limiting valve seat.
Compared with the prior art, the invention has the following beneficial effects:
the invention cancels the fixed type seamed lamination of the existing water cap, and realizes two speeds of positive flow and reverse flow of the water cap through the cooperation of the flow-limiting valve seat and the flow-limiting wing panel. The flow-limiting valve seat adopted by the invention is of a flat-bottom inverted bowl-shaped structure, the bottom of the flow-limiting valve seat is provided with a flow hole, and the effective flow area of the flow hole is matched with the positive flow of the water cap. The flow-limiting wing pieces can move up and down along the water flow direction by taking the central screw rod as an axis; the height of the flow-limiting supporting rib at the lower part of the flow-limiting wing piece is matched according to the positive flow of the water cap, and meanwhile, the effective flow area generated by the combination surface of the flow-limiting wing piece and the flow-limiting valve seat is matched with the reverse flow of the water cap.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front cross-sectional view of a restrictor valve seat of the present invention;
FIG. 3 is a top view of a restrictor valve seat of the present invention;
FIG. 4 is a front cross-sectional view of a flow restricting tab of the present invention;
FIG. 5 is a top view of a flow restricting flap of the present invention;
FIG. 6 is a schematic view of the water flow path for positive flow filtration according to the present invention;
FIG. 7 is a schematic illustration of effective flow holes in positive flow filtration of the present invention, wherein the unshaded portions are the effective flow areas;
FIG. 8 is a schematic view of the water flow path during reverse flow water filtration according to the present invention;
fig. 9 is a schematic view of the effective flow holes of the present invention during reverse flow water filtration, wherein the unshaded portion is the effective flow area.
Wherein, 1-end cap; 2-trapezoidal wire winding short pipe; 3-a flow-restricting valve seat; 4-a flow restricting flap; 5-a limit bottom plate; 6-rubber cushion; 7-positioning the base; 8-fixing the nut; 9-central screw; 10-isolating a perforated plate; 11-a second flow through hole; 12-a first stop neck; 13-second limit neck.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Various structural schematics according to the disclosed embodiments of the invention are shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
In the context of the present disclosure, when a layer/element is referred to as being "on" another layer/element, it can be directly on the other layer/element or intervening layers/elements may be present. In addition, if a layer/element is "on" another layer/element in one orientation, then that layer/element may be "under" the other layer/element when the orientation is reversed.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the double-flow water cap for realizing the positive flow greater than the reverse flow by using the flow-limiting fins comprises a positioning base 7, a central screw 9, an end cover 1, a flow-limiting valve seat 3, flow-limiting fins 4 and a trapezoidal wire winding short pipe 2, wherein the trapezoidal wire winding short pipe 2 is hermetically arranged between the end cover 1 and the flow-limiting valve seat 3.
The positioning base 7 is hermetically arranged at the bottom of the isolating porous plate 10, a square positioning hole is formed in the center of the positioning base 7, and a first flow through hole is formed in the periphery of the square positioning hole; the edge of keeping away from the center of first class through-hole sets up the first spacing neck 12 of upwards buckling, and the centre bore bottom of keeping apart perforated plate 10 is located to first spacing neck 12 cover to it is sealed with keep apart perforated plate 10 through the rubber mat is sealed.
The central screw 9 is a round-head square-neck screw and penetrates out of the bottom of the positioning base 7 upwards, and the square-neck part is sleeved in the square positioning hole of the positioning base 7; the central screw 9 is sequentially sleeved with the end cover 1, the flow-limiting valve seat 3 and the flow-limiting wing panel 4 from top to bottom;
a through hole is formed in the center of the end cover 1, and the central screw rod 9 penetrates out of the through hole; the edge of the end cover 1 is provided with a downward bent edge, the bowl opening of the flow-limiting valve seat 3 is provided with an outward bent edge, the top of the trapezoidal wire-winding short pipe 2 is arranged on the inner side of the edge bent edge of the end cover 1, and the bottom of the trapezoidal wire-winding short pipe is arranged on the bowl opening bent edge of the flow-limiting valve seat 3.
As shown in fig. 2 and 3, the flow-limiting valve seat 3 is a flat-bottom bowl-shaped structure, the diameter of the bowl opening is larger than that of the bowl bottom, the bowl opening is arranged downwards, and the bowl bottom is provided with a second flow through hole 11; the bowl mouth of the flow-limiting valve seat 3 is hermetically connected with the isolating porous plate 10;
a limiting bottom plate 5 is further arranged between the bowl opening of the flow-limiting valve seat 3 and the isolating porous plate 10, the limiting bottom plate 5 is of a hollow circular ring structure, the outer edge of the limiting bottom plate 5 is a bent edge which is bent upwards, and the bent edge of the bowl opening of the flow-limiting valve seat 3 is positioned on the inner side of the bent edge of the limiting bottom plate 5; the inner side edge is bent downwards to form a second limiting neck 13, and the second limiting neck 13 is sleeved at the top of the central hole of the isolating porous plate 10. The bottom surface of the limiting bottom plate 5 is provided with a rubber pad 6, and the limiting bottom plate 5 and the isolating porous plate 10 are sealed through the rubber pad 6.
As shown in fig. 4 and 5, the flow-restricting fins 4 include at least 3 fins, the upper bottom surface of the fin is a plane, and the lower bottom surface is an overflow supporting rib whose thickness gradually decreases from the center of the fin to the edge of the fin; the flow-limiting wing pieces 4 can move up and down along the water flow direction by taking the central fixed rod 9 as an axis;
the structural principle of the invention is as follows:
the trapezoidal wire winding short pipe 2 is used as a key component of the isolation filler, the wire winding gap is smaller than the minimum particle size of the isolated filler, and the flow area is larger than the flow area required by positive flow and reverse flow. The flow-limiting valve seat 3 and the flow-limiting wing 4 are arranged, the fixed type seamed lamination of the existing water cap is cancelled, and the two speeds of positive flow and reverse flow of the water cap are realized through the cooperation of the flow-limiting valve seat 3 and the flow-limiting wing 4.
The double-speed water cap consists of an end cover 1, a trapezoidal wire winding short pipe 2, a flow-limiting valve seat 3, a flow-limiting fin 4, a limiting bottom plate 5, a rubber cushion 6, a positioning base 7, a central screw rod 9 and a fixing nut 8. The round-head square neck of the central screw 9 is sleeved in a first positioning hole of the positioning base 7, the positioning base 7 is arranged below the bottom 10 of the isolating porous plate, the isolating porous plate 10 is sequentially provided with a rubber pad 6, a limiting bottom plate 5, a current-limiting fin 4, a current-limiting valve seat 3, a trapezoidal wire-wound short tube 2 and an end cover 1 by taking the central screw 9 as an axis, and the water cap is fixed on the isolating porous plate 10 by two fixing nuts 8. The winding gap of the trapezoidal winding short pipe 2 is smaller than the minimum grain diameter of the isolated filler. Set up first class through-hole on the location base 7, first class through-hole one side area neck, the neck sets up the first spacing neck 12 of upwards buckling for the edge at the center of keeping away from of first class through-hole, and porous plate 10 is kept apart in the embedding of first spacing neck 12, and the centre sets up the rubber cushion. The effective flow area of the first flow opening is larger than the effective flow area of the second flow opening 11. The flow-limiting valve seat 3 is of a flat-bottom inverted bowl-shaped structure, the bottom of the flow-limiting valve seat is provided with a second flow through hole 11, and the effective flow area S of the second flow through hole 111And positive flow rate Q1The following relationship is satisfied:
Figure BDA0002342383610000081
wherein V is setMeasuring the flow rate; r1The opening radius of the second flow hole 11; r is the radius of the outer edge of the central screw hole formed on the flow-limiting valve seat 3.
Current-limiting fin 4 adopts the pp material, and this embodiment adopts the design to have the three-bladed current-limiting fin of 3 fins, and current-limiting fin 4 can use central screw rod 9 to move about from top to bottom along with the water flow direction as the axle, and current-limiting fin 4's upper surface is the plane, and the lower part setting overflows the bearing muscle, and it is close to the high h at center and satisfies following relation to overflow the bearing muscle:
Figure BDA0002342383610000082
Figure BDA0002342383610000083
wherein h is1Calculating the height of the flow support rib close to the center; r2The outer radius of the flow restriction flap 4; theta is the arc angle between adjacent ones of the flow restricting vanes 4.
When the flow-limiting wing 4 is jointed with the flow-limiting valve seat 3, the effective flow area S generated by the joint surface of the two3And a reverse flow rate Q2The following relationship is satisfied:
Figure BDA0002342383610000084
the working process of the invention is as follows:
as shown in fig. 6, when the double-speed water cap of the invention filters water in positive flow, the flow-limiting fin 4 falls down, and the water flows in from the gap of the trapezoidal wire-wound short tube 2, flows downwards through the second flow through hole 11 of the flow-limiting valve seat 3 along the arrow, bypasses the flow-limiting fin 4 and the flow-supporting rib, and flows out from the central hole of the isolating porous plate 10; i.e., positive flow, the flow rate is restricted by the first flow-through hole (unshaded portion in fig. 7) of the restrictor valve seat 3;
as shown in fig. 8, when the double-speed water cap of the invention filters water in a countercurrent way, water or gas flows in from the central hole of the isolating porous plate, the current-limiting fin 4 is lifted by water flow, the junction surface of the current-limiting fin 4 and the current-limiting valve seat 3 forms an effective countercurrent through hole, and the water flows out from the hole and then flows out from the gap of the trapezoidal wire-winding short pipe 2; that is, in the case of reverse flow, the flow rate is restricted by a reverse flow effective through-hole (unshaded portion in fig. 9) formed by the joint surface of the restricting flap 4 and the restricting valve seat 3.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims (10)

1. A dual flow water cap utilizing flow restricting flaps to achieve positive flow greater than reverse flow, comprising:
the positioning base (7) is hermetically arranged at the bottom of the isolating porous plate (10), a square positioning hole is formed in the center of the positioning base (7), and a first flow through hole is formed in the periphery of the square positioning hole;
the central screw (9) is a round-head square-neck screw, and penetrates out of the bottom of the positioning base (7) upwards, and the square-neck part is sleeved in the square positioning hole of the positioning base (7); the central screw rod (9) is sequentially sleeved with the end cover (1), the flow-limiting valve seat (3) and the flow-limiting wing panel (4) from top to bottom;
the center of the end cover (1) is provided with a through hole, and a central screw rod (9) penetrates out of the through hole;
the flow-limiting valve seat (3) is of a flat-bottom bowl-shaped structure, the diameter of a bowl opening is larger than that of a bowl bottom, the bowl opening is arranged downwards, and a second flow through hole (11) is formed in the bowl bottom; the bowl mouth of the flow-limiting valve seat (3) is hermetically connected with the isolating porous plate (10);
the flow limiting fins (4) comprise at least 3 fins, the upper bottom surfaces of the fins are planes, and the lower bottom surfaces of the fins are overflow supporting ribs of which the thickness is gradually reduced from the centers of the fins to the edges of the fins; the flow limiting wing pieces (4) can move up and down along the water flow direction by taking the central fixed rod (9) as an axis;
the trapezoidal winding short pipe (2) is hermetically arranged between the end cover (1) and the flow-limiting valve seat (3).
2. The dual flow water cap using the flow-limiting fin to achieve the positive flow greater than the reverse flow according to claim 1, wherein the edge of the end cap (1) is provided with a downward bent flange, the bowl mouth of the flow-limiting valve seat (3) is provided with an outward bent flange, the top of the trapezoidal wire-winding short tube (2) is arranged at the inner side of the edge flange of the end cap (1), and the bottom is arranged on the bowl mouth flange of the flow-limiting valve seat (3).
3. The dual flow water cap for realizing the positive flow greater than the reverse flow by using the flow-limiting fin according to claim 1, wherein the edge of the first flow through hole far from the center is provided with a first limiting neck (12) bent upwards, and the first limiting neck (12) is sleeved at the bottom of the center hole of the isolating porous plate (10) and sealed with the isolating porous plate (10) by a rubber gasket seal.
4. The double-flow water cap for realizing the positive flow greater than the reverse flow by utilizing the flow limiting fins according to claim 1, wherein a limiting bottom plate (5) is further arranged between the bowl opening of the flow limiting valve seat (3) and the isolating porous plate (10), the limiting bottom plate (5) is of a hollow circular ring structure, the outer edge of the limiting bottom plate is a bent edge which is bent upwards, and the bent edge of the bowl opening of the flow limiting valve seat (3) is positioned at the inner side of the bent edge of the limiting bottom plate (5); the inner side edge is bent downwards to form a second limiting neck (13), and the top of a central hole of the isolating porous plate (10) is sleeved with the second limiting neck (13).
5. The double flow water cap for realizing the positive flow greater than the reverse flow by using the flow limiting wings as claimed in claim 4, wherein the bottom surface of the limiting bottom plate (5) is provided with a rubber pad (6), and the limiting bottom plate (5) is sealed with the isolating porous plate (10) by the rubber pad (6).
6. The double flow water cap using the flow restriction fin to achieve the positive flow greater than the reverse flow according to claim 1, wherein the winding gap of the trapezoidal winding short pipe (2) is smaller than the minimum particle size of the isolated filler, and the flow area is larger than the flow area required for the positive flow and the reverse flow.
7. The double flow cap for achieving a positive flow greater than a negative flow with flow restricting wings according to claim 1, characterized in that the effective flow area of the first through hole is greater than the effective flow area of the second through hole (11).
8. Double flow cap with flow restriction flaps to achieve a positive flow greater than a negative flow according to claim 1 or 2, characterized in that the effective flow area S of the second through holes (11)1And positive flow rate Q1The following relationship is satisfied:
Figure FDA0002342383600000021
wherein V is the design flow rate; r1The opening radius of the second flow through hole (11); r is the radius of the outer edge of a central screw hole formed on the flow-limiting valve seat (3).
9. The dual flow water cap utilizing flow restricting vanes to achieve a positive flow greater than a negative flow of claim 1 wherein the height h of the flow passing support rib near the center satisfies the relationship:
Figure FDA0002342383600000031
Figure FDA0002342383600000032
wherein h is1Calculating the height of the flow support rib close to the center; r2The radius of the outer edge of the flow-limiting wing (4); theta is the radian of an included angle between adjacent vanes of the flow limiting vanes (4).
10. Double flow cap using flow restriction flaps to achieve a positive flow greater than a negative flow according to claim 1, characterized by the fact that the flow restriction flaps (4) are associated with the flow restriction flapsWhen the valve seat (3) is jointed, the effective flow area S generated by the joint surface of the two3And a reverse flow rate Q2The following relationship is satisfied:
Figure FDA0002342383600000033
wherein V is the design flow rate; r1The opening radius of the second flow through hole (11); r is the radius of the outer edge of a central screw hole formed on the flow-limiting valve seat (3).
CN201911385736.4A 2019-12-27 2019-12-27 Double-flow water cap capable of realizing positive flow and larger than countercurrent flow by utilizing flow limiting fins Active CN110862115B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911385736.4A CN110862115B (en) 2019-12-27 2019-12-27 Double-flow water cap capable of realizing positive flow and larger than countercurrent flow by utilizing flow limiting fins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911385736.4A CN110862115B (en) 2019-12-27 2019-12-27 Double-flow water cap capable of realizing positive flow and larger than countercurrent flow by utilizing flow limiting fins

Publications (2)

Publication Number Publication Date
CN110862115A true CN110862115A (en) 2020-03-06
CN110862115B CN110862115B (en) 2024-03-01

Family

ID=69659405

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911385736.4A Active CN110862115B (en) 2019-12-27 2019-12-27 Double-flow water cap capable of realizing positive flow and larger than countercurrent flow by utilizing flow limiting fins

Country Status (1)

Country Link
CN (1) CN110862115B (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192750A (en) * 1976-08-09 1980-03-11 Massey-Ferguson Inc. Stackable filter head unit
CN2284780Y (en) * 1997-02-13 1998-06-24 俞剑平 Double-velocity triangular wire-coiling filtering cap
CN2296756Y (en) * 1997-06-23 1998-11-11 田丰 Gap changing type water filtering cap
CN2420262Y (en) * 2000-05-30 2001-02-21 李秦生 Double flow rate water filting cap
WO2008128150A2 (en) * 2007-04-13 2008-10-23 Parker-Hannifin Corporation Filter element and assembly with bypass reverse flow filter end cap
CN101730573A (en) * 2007-07-16 2010-06-09 佛莱尔有限公司 Filter assembly and method
CN104344026A (en) * 2013-08-10 2015-02-11 龙口市海丰环境科技工程有限公司 Flow control device of valve
SE1630040A1 (en) * 2015-03-23 2016-09-24 Ngl Teknik I Linköping Ab ADJUSTABLE FLOW LIMITER FOR A MIXER AND A PROCEDURE FOR SETTING THE FLOW
WO2016153409A1 (en) * 2015-03-23 2016-09-29 Ngl Teknik I Linköping Ab Adjustable flow limiter for a mixing faucet and a method for adjusting the flow
CN207080647U (en) * 2017-03-28 2018-03-09 毛高闻 A kind of back washing filter system four-way valve
CN208927744U (en) * 2018-08-10 2019-06-04 苏州湛清环保科技有限公司 Adaptive-flow counter washing filter head
CN211644639U (en) * 2019-12-27 2020-10-09 西安西热水务环保有限公司 Double-flow water cap with positive flow larger than reverse flow

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192750A (en) * 1976-08-09 1980-03-11 Massey-Ferguson Inc. Stackable filter head unit
CN2284780Y (en) * 1997-02-13 1998-06-24 俞剑平 Double-velocity triangular wire-coiling filtering cap
CN2296756Y (en) * 1997-06-23 1998-11-11 田丰 Gap changing type water filtering cap
CN2420262Y (en) * 2000-05-30 2001-02-21 李秦生 Double flow rate water filting cap
WO2008128150A2 (en) * 2007-04-13 2008-10-23 Parker-Hannifin Corporation Filter element and assembly with bypass reverse flow filter end cap
CN101730573A (en) * 2007-07-16 2010-06-09 佛莱尔有限公司 Filter assembly and method
CN104344026A (en) * 2013-08-10 2015-02-11 龙口市海丰环境科技工程有限公司 Flow control device of valve
SE1630040A1 (en) * 2015-03-23 2016-09-24 Ngl Teknik I Linköping Ab ADJUSTABLE FLOW LIMITER FOR A MIXER AND A PROCEDURE FOR SETTING THE FLOW
WO2016153409A1 (en) * 2015-03-23 2016-09-29 Ngl Teknik I Linköping Ab Adjustable flow limiter for a mixing faucet and a method for adjusting the flow
CN207080647U (en) * 2017-03-28 2018-03-09 毛高闻 A kind of back washing filter system four-way valve
CN208927744U (en) * 2018-08-10 2019-06-04 苏州湛清环保科技有限公司 Adaptive-flow counter washing filter head
CN211644639U (en) * 2019-12-27 2020-10-09 西安西热水务环保有限公司 Double-flow water cap with positive flow larger than reverse flow

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
罗永勤: "无机非金属材料实验", 冶金工业出版社, pages: 55 *

Also Published As

Publication number Publication date
CN110862115B (en) 2024-03-01

Similar Documents

Publication Publication Date Title
CN211619966U (en) Double-flow water cap with reverse flow larger than positive flow
CN211644639U (en) Double-flow water cap with positive flow larger than reverse flow
CN204830386U (en) Take cloth wind ware in radial hole
CN110862115A (en) Double-flow water cap for realizing positive flow larger than reverse flow by utilizing flow-limiting fins
CN106702656B (en) Washing machine impeller and washing machine
US20100163478A1 (en) Water-flow filtering structure
CN111072080A (en) Central screw type metal double-flow water cap with fins and with reverse flow rate larger than positive flow rate
CN106612100B (en) Photovoltaic module carrier and matrix
CN102913586B (en) For being filled with the orifice fitting of the engine foundation of magneto-rheological fluid
JPH02119931A (en) Spherical packing material
CN207417145U (en) A kind of protective cover of unmanned plane propeller
CN209871289U (en) Float type honeycomb structure floating plate
CN204488961U (en) Mud guard
CN210283779U (en) Fillet triangle multi-azimuth ventilation spoke
CA2647917A1 (en) Water-flow filtering structure
CN211287876U (en) Overflow tank cover structure, overflow tank assembly and vehicle
CN203702411U (en) Civil electric generator oil tank
CN204942070U (en) A kind of large discharge quiet motor cooling fan
CN207360178U (en) A kind of vehicle water cup frame
CN105697415A (en) Backward centrifugal wind wheel
CN206694349U (en) A kind of air exchanging plug for automobile oil cylinder
CN204921804U (en) Engine cylinder suspension inner frame
CN204635826U (en) A kind of hands-free lid kettle/cup with movable cover plate
CN205934125U (en) New graphite bottom plate
CN206582201U (en) A kind of punching press flange

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