CN108443519B - Antifouling water intaking valve - Google Patents
Antifouling water intaking valve Download PDFInfo
- Publication number
- CN108443519B CN108443519B CN201810475814.9A CN201810475814A CN108443519B CN 108443519 B CN108443519 B CN 108443519B CN 201810475814 A CN201810475814 A CN 201810475814A CN 108443519 B CN108443519 B CN 108443519B
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- China
- Prior art keywords
- water
- valve needle
- gland
- force
- water inlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 320
- 230000003373 anti-fouling effect Effects 0.000 title claims abstract description 26
- 210000004907 gland Anatomy 0.000 claims abstract description 79
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses an anti-fouling water inlet valve, which comprises a water inlet channel, a water outlet channel, a water stopping unit, a gland and a valve needle; the valve needle is relatively fixed with one of the water stopping unit and the gland under a preset force, and/or the through hole part is relatively fixed with the other of the water stopping unit and the gland under a preset force, and when the valve needle is not subjected to resistance or the resistance received by the valve needle is smaller than the preset force, the valve needle and the overflow hole can be relatively movably matched, so that the water stopping unit can move relative to the gland under the water pressure of the water inlet valve; when the resistance force of the valve needle is larger than the preset force, the water stopping unit can still move relative to the gland under the water pressure of the water inlet valve; the water stopping unit can still move relative to the gland when the valve needle is blocked with the overflow hole, so that the water stopping function of the water inlet valve is prevented from being invalid, and the water inlet valve is prevented from stopping water.
Description
Technical Field
The invention relates to an anti-fouling water inlet valve.
Background
The valve needle of the existing anti-fouling water inlet valve is fixedly connected with one of the water stop pad or the upper cover, the water stop pad moves back and forth through the action force of a pressure difference so as to achieve water inlet or water stop, the back pressure cavity is provided with an overflow hole communicated with a water inlet channel, the valve needle moves along with the other one of the water stop pad or the upper cover relative to the water stop pad or the upper cover, sediment remaining at the overflow hole can be cleaned, the overflow hole is prevented from being blocked by the sediment, the water inlet function of the water inlet valve is affected, but when the water quality is dirty, the condition that the valve needle is blocked by the overflow hole easily exists, so that the water stop pad cannot move in the water stop direction, and the water stop function of the water inlet valve is invalid.
Disclosure of Invention
The invention aims to solve the problems, and provides an anti-fouling water inlet valve, when a valve needle is blocked between the valve needle and an overflow hole, a water stopping unit can still move relative to a gland, so that the water stopping function of the water inlet valve is prevented from being invalid.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an anti-fouling water inlet valve comprises a water inlet channel (11) and a water outlet channel (12), and further comprises:
a water stopping unit (20) for communicating or cutting off the water inlet channel (11) and the water outlet channel (12);
the gland (30) is matched with the water stopping unit (20) to form a back pressure cavity (13), the back pressure cavity (13) is provided with a through hole part (22), and the through hole part (22) is provided with an overflow hole (14) communicated with the water inlet channel (11);
a valve needle (40), the valve needle (40) being relatively fixed to one of the water stop unit (20) and the gland (30) under a predetermined force, and/or the through hole portion (22) being relatively fixed to the other of the water stop unit (20) and the gland (30) under a predetermined force;
when the valve needle (40) is not subjected to resistance or the resistance is smaller than the preset force, the valve needle (40) and the overflow hole (14) can be in relatively movable fit, so that the water stopping unit (20) can move relative to the gland (30) under the water pressure of the water inlet valve;
when the resistance force of the valve needle (40) is larger than the preset force, the water stopping unit (20) can still move relative to the gland (30) under the water pressure of the water inlet valve.
Preferably, the valve needle (40) is relatively fixed with one of the water stop unit (20) and the gland (30) under the action of the preset force, the valve needle (40) comprises a first valve needle end (41) and a second valve needle end (42), and when the resistance force born by the first valve needle end (41) is larger than the preset force, the second valve needle end (42) is relatively movably matched with one of the water stop unit (20) and the gland (30), so that the water stop unit (20) can move relative to the gland (30) under the water pressure of the water inlet valve.
Preferably, a negative pressure cavity (43) is formed between the second end (42) of the valve needle and one of the water stop unit (20) and the gland (30), and the predetermined force is the negative pressure of the negative pressure cavity (43); when the resistance force exerted by the first end (41) of the valve needle is larger than the negative pressure, the second end (42) of the valve needle (40) overcomes the negative pressure and is in relatively movable fit with one of the water stop unit (20) and the gland (30).
Preferably, an elastic member (45) or a magnetic member is arranged between the second end (42) of the valve needle and one of the water stop unit (20) and the gland (30), and the predetermined force is the elastic force of the elastic member (45) or the magnetic attraction force of the magnetic member; when the resistance force born by the first end (41) of the valve needle is larger than the elastic force or the magnetic attraction force, the second end (42) of the valve needle (40) overcomes the elastic force or the magnetic attraction force and is in movable fit with one of the water stop unit (20) and the gland (30) relatively.
Preferably, the valve needle is relatively fixed with one of the water stop unit (20) and the gland (30) under the action of the preset force, the valve needle (40) comprises a first valve needle end (41) and a second valve needle end (42), and when the resistance force born by the first valve needle end (41) is larger than the preset force, the first valve needle end (41) and the second valve needle end (42) are relatively movable, so that the water stop unit (20) can relatively move with respect to the gland (30) under the water pressure of the water inlet valve.
Preferably, the valve needle (40) is of an elastic telescopic structure; the predetermined force is an elastic force of the valve needle (40), and when the resistance force applied to the first end (41) of the valve needle is larger than the elastic force, the valve needle (40) stretches to enable the first end (41) of the valve needle to be in relatively movable fit with the second end (42) of the valve needle.
Preferably, the valve needle (40) adopts two sections, and the first section and the second section are attracted by magnetic attraction or connected and matched by a tension spring; the predetermined force is a magnetic attraction force or an elastic force between a first section and a second section of the valve needle (40), and when the resistance force exerted by the first end (41) of the valve needle is larger than the magnetic attraction force or the elastic force, the first end (41) of the valve needle and the second end (42) of the valve needle are in relatively movable fit.
Preferably, the through hole part (22) is relatively fixed with the other of the water stop unit (20) and the gland (30) under the action of the predetermined force, and when the resistance force applied to the valve needle (40) is greater than the predetermined force, the through hole part (22) is relatively movable with the other of the water stop unit (20) and the gland (30).
Preferably, the overflow hole (14) is arranged on the water stopping unit (20), when the water inlet valve is used for water inflow, the water flow of the water inlet channel (11) is divided into a main water channel and a branch water channel, and the main water channel generates a forward water pressure which is consistent with the water flow direction of the water inlet channel (11) for the water stopping unit (20); the water flow of the branch waterway passes through the overflow hole (14) on the water stopping unit (20) to enter the back pressure cavity (13), and a reverse water pressure opposite to the water flow direction of the water inlet channel (11) is generated for the water stopping unit (20).
Preferably, the overflow hole (14) is arranged on the gland (30), when the water inlet valve is used for water inflow, the water flow of the water inlet channel (11) is divided into a main water channel and a branch water channel, and the main water channel generates a reverse water pressure opposite to the water flow direction of the water inlet channel (11) for the water stop unit (20); the water flow of the branch waterway passes through the overflow hole (14) on the gland (30) to enter the back pressure cavity (13), and generates forward water pressure for the water stopping unit (20) which is consistent with the water flow direction of the water inlet channel (11).
Preferably, the back pressure cavity (13) is also provided with a pressure relief hole (15) communicated with the atmosphere; the back pressure cavity (13) is subjected to pressure control by opening or closing the pressure relief hole (15), so that pressure difference is formed at two sides of the water stopping unit (20); the water stopping unit (20) moves under the action of the pressure difference so as to be communicated with or cut off the water inlet channel (11) and the water outlet channel (12).
The beneficial effects of the invention are as follows:
according to the anti-fouling water inlet valve, when the valve needle is free from resistance or the resistance is smaller than the preset force, the valve needle and the overflow hole can be in relatively movable fit, so that the water stopping unit can move relative to the gland under the water pressure of the water inlet valve; when the resistance born by the valve needle is larger than the preset force, the water stopping unit can still move relative to the gland under the water pressure of the water inlet valve, so that the water stopping unit can still move relative to the gland when the valve needle is blocked between the valve needle and the overflow hole, and the water stopping function failure of the water inlet valve is avoided, and the water inlet valve is prevented from stopping water.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is an exploded view of an anti-fouling water inlet valve according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of the valve needle of FIG. 1;
FIG. 3 is a cross-sectional view showing a normal water stopping state of the anti-fouling water feed valve according to the first embodiment of the present invention;
FIG. 4 is a cross-sectional view showing a water stopping state when an antifouling water supply valve according to a first embodiment of the present invention is abnormally stuck;
FIG. 5 is a cross-sectional view showing a normal water stopping state of an anti-fouling water inlet valve according to a second embodiment of the present invention;
FIG. 6 is a cross-sectional view showing a water stopping state when an antifouling water supply valve according to a second embodiment of the present invention is abnormally stuck;
FIG. 7 is a sectional view showing a normal water stopping state of an anti-fouling water feed valve according to a third embodiment of the present invention;
FIG. 8 is a cross-sectional view showing a water stopping state when an antifouling water supply valve according to a third embodiment of the present invention is abnormally stuck;
FIG. 9 is a cross-sectional view showing a normal water stopping state of an anti-fouling water feed valve according to a fourth embodiment of the present invention;
FIG. 10 is a cross-sectional view showing a water-stopping state when an antifouling water supply valve according to a fourth embodiment of the present invention is abnormally stuck.
In the figure:
11-a water inlet channel; 12-a water outlet channel; 13-a back pressure chamber; 14-overflow holes; 15-a pressure relief hole;
20-a water stop unit (water stop pad); 21-stopping water; 22-a through hole portion;
30-capping;
40-valve needle (telescopic, two-stage); 41-a first end of the valve needle (disposed in movable relation to the flow bore); 42-the second end of the valve needle (fixed relative to the gland or the water stop unit under a predetermined force); 43-negative pressure chamber; 44-sealing rings; 45-an elastic member;
50-water inlet body.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
First embodiment (the second end of the valve needle is fixed by negative pressure, and the through hole part is arranged in the water stop unit)
As shown in fig. 1 to 4, an antifouling water inlet valve of the present embodiment includes:
a water inlet channel 11 and a water outlet channel 12;
a water stopping unit 20 for communicating or cutting off the water inlet passage 11 and the water outlet passage 12;
a gland 30 cooperating with the water stop unit 20 to form a back pressure chamber 13, the back pressure chamber 13 having a through hole portion 22, the through hole portion 22 having an overflow hole 14 communicating with the water inlet passage 11;
a valve needle 40, wherein the valve needle 40 is relatively fixed to one of the water stop unit 20 and the gland 30 under a predetermined force, and/or the through hole portion 22 is relatively fixed to the other of the water stop unit 20 and the gland 30 under a predetermined force;
when the valve needle 40 is not subjected to resistance or the resistance is smaller than the preset force, the valve needle 40 and the overflow hole 14 can be in relatively movable fit, so that the water stopping unit 20 can move relative to the gland 30 under the water pressure of the water inlet valve;
when the valve needle 40 receives a resistance force greater than the predetermined force, the water stopping unit 20 is still movable relative to the gland 30 under the water pressure of the inlet valve.
The opening and closing control modes of the water inlet channel 11 and the water outlet channel 12 are as follows:
in this embodiment, the back pressure chamber 13 is further provided with a pressure relief hole 15 communicating with the atmosphere; the back pressure cavity 13 is pressure controlled by opening or closing the pressure relief hole 15, so that pressure difference is formed at two sides of the water stop unit 20; the water stopping unit 20 moves under the pressure difference to connect or disconnect the water inlet channel and the water outlet channel. It is also possible to control the movement or deformation of the water stopping unit 20 to communicate or shut off the water inlet passage 11 and the water outlet passage 12 using other control structures.
In this embodiment, the valve needle 40 is relatively fixed to one of the water stop unit 20 and the gland 30 under the action of the predetermined force, the valve needle 40 includes a first end 41 and a second end 42, and when the resistance force applied to the first end 41 of the valve needle is greater than the predetermined force, the second end 42 of the valve needle is relatively movably matched to one of the water stop unit 20 and the gland 30, so that the water stop unit 20 can move relative to the gland 30 under the water pressure of the water inlet valve.
The "resistance" in the present invention refers to the resistance that the first end 41 of the valve needle is blocked by the flow hole 14 when the flow hole 14 is blocked by impurities in the water flow, and the first end 41 of the valve needle is subjected to the action of the pressure of the water flow.
For the mounting of the valve needle second end 42:
in this embodiment, a negative pressure chamber 43 is formed between the second end 42 of the valve needle and one of the water stop unit 20 and the gland 30, and the predetermined force is the negative pressure of the negative pressure chamber 43; when the resistance force applied to the first end 41 of the valve needle is greater than the negative pressure force, the second end 42 of the valve needle 40 is relatively movably matched with one of the water stop unit 20 and the gland 30 against the negative pressure force, and specifically, the second end 42 of the valve needle and the gland 30 form a negative pressure cavity 43.
For the setting position of the overflow hole 14:
in this embodiment, the overflow hole 14 is disposed on the water stop unit 20, and when the water inlet valve is in water inlet, the water flow of the water inlet channel 11 is divided into a main water channel and a branch water channel, and the main water channel generates a forward water pressure for the water stop unit 20, which is consistent with the water flow direction of the water inlet channel 11; the water flow of the branch waterway passes through the overflow hole 14 on the water stopping unit 20 to enter the back pressure cavity 13, and generates a reverse water pressure opposite to the water flow direction of the water inlet channel 11 for the water stopping unit 20.
The water stopping principle of this embodiment is as follows:
as shown in fig. 3, in normal use, the suction force of the negative pressure cavity 43 is used to maintain a fixed position relative to the gland 30.
As shown in fig. 4, when the water quality is dirty, the joint (the overflow hole 14) between the valve needle 40 and the water stop unit 20 is blocked, the second end 42 of the valve needle 40 moves relative to the gland 30 under the action of the reverse water pressure of the back pressure chamber 13, so that the valve needle 40 moves along with the water stop unit 20 in the water stop direction, and normal water stop is ensured.
When the valve needle first end 41 is subjected to a resistance greater than the predetermined force, this embodiment can employ, in addition to ensuring normal water stop by moving the valve needle second end 42 relative to the gland 30:
the valve needle is relatively fixed with one of the water stop unit 20 and the gland 30 under the action of the preset force, the valve needle 40 comprises a valve needle first end 41 and a valve needle second end 42, and when the resistance force born by the valve needle first end 41 is larger than the preset force, the valve needle first end 41 and the valve needle second end 42 relatively move, so that the water stop unit 20 can move relative to the gland 30 under the water pressure of the water inlet valve. Specific implementation modes can adopt the following two preferable schemes:
one of the preferred schemes is as follows: the valve needle adopts an integral structure which can elastically stretch and retract:
specifically, the valve needle 40 has an elastic telescopic structure; the predetermined force is the self elastic force of the valve needle 40, when the resistance force applied by the first end 41 of the valve needle is greater than the elastic force, the valve needle 40 is stretched to enable the first end 41 of the valve needle and the second end 42 of the valve needle to be in relatively movable fit, so that the water stop unit 20 can move relative to the gland 30 under the water pressure of the water inlet valve.
And the second preferred scheme is as follows: the valve needle adopts a split structure:
specifically, the valve needle 40 adopts two sections, and the first section and the second section are attracted by magnetic attraction or connected and matched by a tension spring; the predetermined force is a magnetic attraction force or an elastic force between the first section and the second section of the valve needle 40, and when the resistance force applied to the first end 41 of the valve needle is greater than the magnetic attraction force or the elastic force, the first end 41 of the valve needle and the second end 42 of the valve needle are in relatively movable fit, so that the water stop unit 20 can move relative to the gland 30 under the water pressure of the water inlet valve.
Second embodiment (the second end of the needle is fixed by elastic force, and the through hole is arranged in the water stop unit)
As shown in fig. 5 to 6, the main difference between the present embodiment and the first embodiment is the mounting manner of the second end of the valve needle 40, and an elastic member 45 is disposed between the second end 42 of the valve needle of the present embodiment and one of the water stop unit 20 and the gland 30, and the predetermined force is the elastic force of the elastic member 45; when the resistance force applied to the first end 41 of the valve needle is greater than the elastic force, the second end 42 of the valve needle 40 is relatively movably engaged with one of the water stop unit 20 and the gland 30 against the elastic force.
In addition to the mounting structures of the first and second embodiments, the mounting manner of the second end 42 of the valve needle can be as follows: a magnetic member is arranged between the second end 42 of the valve needle and one of the water stop unit 20 and the gland 30, and the predetermined force is the magnetic attraction force of the magnetic member; when the resistance force applied to the first end 41 of the valve needle is greater than the magnetic attraction force, the second end 42 of the valve needle 40 is relatively movably engaged with one of the water stop unit 20 and the gland 30 against the magnetic attraction force. The second end 42 of the valve needle may be configured to be detachable in addition to the above-mentioned installation manner of negative pressure, elastic force and magnetic attraction, so that the second end 42 of the valve needle may be movable when the first end 41 of the valve needle is blocked, which is not limited thereto.
The water stopping principle of this embodiment is as follows:
as shown in fig. 5, in normal use, the valve needle 40 is kept in a fixed position relative to the gland 30 by the elastic force of the elastic member 45.
As shown in fig. 6, when the water quality is dirty, the joint (the overflow hole 14) between the valve needle 40 and the water stop unit 20 is blocked, the second end 42 of the valve needle 40 moves relative to the gland 30 under the action of the reverse water pressure of the back pressure chamber 13, so that the valve needle 40 moves along with the water stop unit 20 in the water stop direction, and normal water stop is ensured.
Third embodiment (valve needle second end fixed with negative pressure)
As shown in fig. 7 to 8, the main difference between the present embodiment and the first embodiment is that: in this embodiment, the second end 42 of the valve needle is relatively fixed to the water stop unit 20 under the suction force of the negative pressure cavity 43, the overflow hole 14 is disposed on the gland 30, when the water inlet valve is in water inlet, the water flow of the water inlet channel 11 is divided into a main water channel and a branch water channel, and the main water channel generates a reverse water pressure to the water stop unit 20, which is opposite to the water flow direction of the water inlet channel 11; the water flow of the branch waterway passes through the overflow hole 14 on the gland 30 to enter the back pressure cavity 13, and generates a forward water pressure to the water stop unit 20, which is consistent with the water flow direction of the water inlet channel 11.
The overflow hole 14 may be provided in either one of the water stop unit 20 and the gland 30, or in another member provided between the water stop unit 20 and the gland 30, to mainly communicate the back pressure chamber 13 with the water inlet passage 11.
The water stopping principle of this embodiment is as follows:
as shown in fig. 7, in normal use, the valve needle 40 is kept at a fixed position relative to the water stop unit 20 by the suction force of the negative pressure chamber 43 (of course, this embodiment can also be similar to the second embodiment, in which the valve needle 40 is under the elastic force of the elastic member 45 or the magnetic suction force of the magnetic member).
As shown in fig. 8, when the water is dirty, the joint (the overflow hole 14) between the valve needle 40 and the gland 30 is blocked, the second end 42 of the valve needle 40 moves relative to the water stop unit 20 under the action of the forward water pressure of the back pressure chamber 13, so that the water stop unit 20 alone moves in the water stop direction, and normal water stop is ensured.
Fourth embodiment (through hole portion is fixed to the water stop unit by an elastic member)
As shown in fig. 9 to 10, the present embodiment is different from the second embodiment in that the through hole portion 22 is relatively fixed to the other of the water stop unit 20 and the gland 30 under the predetermined force, the through hole portion 22 is relatively movable to the other of the water stop unit 20 and the gland 30 when the valve needle first end 41 receives a resistance force greater than the predetermined force, specifically, the valve needle second end 42 is fixed to the gland 30, and the through hole portion 22 is provided on the water stop unit 20 and is provided with an elastic member 45 between the through hole portion 22 and the water stop unit 20, the elastic force of the elastic member 45 acts as the predetermined force, the through hole portion 22 is relatively fixed to the water stop unit 20 under the predetermined force, and the through hole portion 22 is relatively movable to the water stop unit 20 when the valve needle first end 41 receives a resistance force greater than the predetermined force, thereby enabling the water stop unit 20 to be movable to the gland 30 under the water pressure of the water inlet valve. Of course, similar to the first embodiment and the second embodiment, the predetermined force for fixing the through hole 22 and the water stop unit 20 in the present embodiment may be a negative pressure or a magnetic attraction between the through hole 22 and the water stop unit 20, and other undescribed portions are identical to the above, and will not be repeated here.
While the foregoing description illustrates and describes the preferred embodiments of the present invention, as aforesaid, it is to be understood that the invention is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and is capable of use in various other combinations, modifications and environments and is capable of modifications that are within the scope of the inventive concept described herein, either as a result of the foregoing teachings or of the relevant art or knowledge. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (8)
1. An antifouling water inlet valve, includes inlet channel (11), play water channel (12), its characterized in that still includes:
a water stopping unit (20) for communicating or cutting off the water inlet channel (11) and the water outlet channel (12);
the gland (30) is matched with the water stopping unit (20) to form a back pressure cavity (13), the back pressure cavity (13) is provided with a through hole part (22), and the through hole part (22) is provided with an overflow hole (14) communicated with the water inlet channel (11);
a valve needle (40), wherein the valve needle (40) is relatively fixed with one of the water stop unit (20) and the gland (30) under a preset force, and/or the through hole part (22) is relatively fixed with the other of the water stop unit (20) and the gland (30) under a preset force, and the valve needle (40) and the overflowing hole (14) can be relatively fixed under the action of resistance;
when the valve needle (40) is not subjected to resistance or the resistance is smaller than the preset force, the valve needle (40) and the overflow hole (14) can be in relatively movable fit, so that the water stopping unit (20) can move relative to the gland (30) under the water pressure of the water inlet valve;
when the resistance force of the valve needle (40) is larger than the preset force, the water stopping unit (20) can still move relative to the gland (30) under the water pressure of the water inlet valve; the water stop unit can still move relative to the gland when the valve needle is blocked between the valve needle and the overflow hole; the resistance refers to the resistance of the valve needle under the action of water flow pressure when the valve needle is blocked between the valve needle and the overflow hole;
the valve needle (40) is relatively fixed with one of the water stopping unit (20) and the gland (30) under the action of the preset force, the valve needle (40) comprises a valve needle first end (41) and a valve needle second end (42), when the resistance force born by the valve needle first end (41) is larger than the preset force, the valve needle second end (42) is relatively movably matched with one of the water stopping unit (20) and the gland (30), or the valve needle first end (41) and the valve needle second end (42) are relatively movable, so that the water stopping unit (20) can relatively move with respect to the gland (30) under the water pressure of a water inlet valve;
still alternatively, the through hole portion (22) is fixed relative to the other of the water stop unit (20) and the gland (30) under the predetermined force, and when the valve needle (40) receives a resistance force greater than the predetermined force, the through hole portion (22) moves relative to the other of the water stop unit (20) and the gland (30).
2. An anti-fouling water inlet valve according to claim 1, wherein: a negative pressure cavity (43) is formed between the second end (42) of the valve needle and one of the water stop unit (20) and the gland (30), and the preset force is the negative pressure of the negative pressure cavity (43); when the resistance force exerted by the first end (41) of the valve needle is larger than the negative pressure, the second end (42) of the valve needle (40) overcomes the negative pressure and is in relatively movable fit with one of the water stop unit (20) and the gland (30).
3. An anti-fouling water inlet valve according to claim 1, wherein: an elastic piece (45) or a magnetic piece is arranged between the second end (42) of the valve needle and one of the water stop unit (20) and the gland (30), and the preset force is the elastic force of the elastic piece (45) or the magnetic attraction force of the magnetic piece; when the resistance force born by the first end (41) of the valve needle is larger than the elastic force or the magnetic attraction force, the second end (42) of the valve needle (40) overcomes the elastic force or the magnetic attraction force and is in movable fit with one of the water stop unit (20) and the gland (30) relatively.
4. An anti-fouling water inlet valve according to claim 1, wherein: the valve needle (40) is of an elastic telescopic structure; the predetermined force is an elastic force of the valve needle (40), and when the resistance force applied to the first end (41) of the valve needle is larger than the elastic force, the valve needle (40) stretches to enable the first end (41) of the valve needle to be in relatively movable fit with the second end (42) of the valve needle.
5. An anti-fouling water inlet valve according to claim 1, wherein: the valve needle (40) adopts two sections, and the first section and the second section are attracted by magnetic attraction or connected and matched by a tension spring; the predetermined force is a magnetic attraction force or an elastic force between a first section and a second section of the valve needle (40), and when the resistance force exerted by the first end (41) of the valve needle is larger than the magnetic attraction force or the elastic force, the first end (41) of the valve needle and the second end (42) of the valve needle are in relatively movable fit.
6. An anti-fouling water inlet valve according to any one of claims 1 to 5, wherein: the water inlet valve is characterized in that the overflow hole (14) is arranged on the water stopping unit (20), when water is fed into the water inlet valve, the water flow of the water inlet channel (11) is divided into a main water channel and a branch water channel, and the main water channel generates a forward water pressure which is consistent with the water flow direction of the water inlet channel (11) for the water stopping unit (20); the water flow of the branch waterway passes through the overflow hole (14) on the water stopping unit (20) to enter the back pressure cavity (13), and a reverse water pressure opposite to the water flow direction of the water inlet channel (11) is generated for the water stopping unit (20).
7. An anti-fouling water inlet valve according to any one of claims 1 to 5, wherein: the overflow hole (14) is arranged on the gland (30), when the water inlet valve is used for water inflow, the water flow of the water inlet channel (11) is divided into a main water channel and a branch water channel, and the main water channel generates a reverse water pressure opposite to the water flow direction of the water inlet channel (11) for the water stop unit (20); the water flow of the branch waterway passes through the overflow hole (14) on the gland (30) to enter the back pressure cavity (13), and generates forward water pressure for the water stopping unit (20) which is consistent with the water flow direction of the water inlet channel (11).
8. An anti-fouling water inlet valve according to any one of claims 1 to 5, wherein: the back pressure cavity (13) is also provided with a pressure relief hole (15) communicated with the atmosphere; the back pressure cavity (13) is subjected to pressure control by opening or closing the pressure relief hole (15), so that pressure difference is formed at two sides of the water stopping unit (20); the water stopping unit (20) moves under the action of the pressure difference so as to be communicated with or cut off the water inlet channel (11) and the water outlet channel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810475814.9A CN108443519B (en) | 2018-05-17 | 2018-05-17 | Antifouling water intaking valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810475814.9A CN108443519B (en) | 2018-05-17 | 2018-05-17 | Antifouling water intaking valve |
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| CN108443519A CN108443519A (en) | 2018-08-24 |
| CN108443519B true CN108443519B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810475814.9A Active CN108443519B (en) | 2018-05-17 | 2018-05-17 | Antifouling water intaking valve |
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| CN101218458A (en) * | 2005-07-12 | 2008-07-09 | 株式会社伊奈 | Pilot type water discharging/stopping and flow regulating valve device |
| EP1965111A1 (en) * | 2007-02-27 | 2008-09-03 | Delabie | Self-closing valve |
| CN201762791U (en) * | 2010-09-15 | 2011-03-16 | 厦门瑞尔特卫浴工业有限公司 | Water inlet valve used for removing siphon negative pressure |
| CN203963037U (en) * | 2014-07-04 | 2014-11-26 | 厦门瑞尔特卫浴科技股份有限公司 | The antifouling mechanism of a kind of valve |
| CN208417564U (en) * | 2018-05-17 | 2019-01-22 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of novel antifouling inlet valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8322682B2 (en) * | 2007-11-28 | 2012-12-04 | Advanced Modern Technologies Corp. | Method and arrangement for controlling flush water volume |
| US10189194B2 (en) * | 2014-12-05 | 2019-01-29 | Zurn Industries, Llc | Unitary diaphragm |
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2018
- 2018-05-17 CN CN201810475814.9A patent/CN108443519B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101218458A (en) * | 2005-07-12 | 2008-07-09 | 株式会社伊奈 | Pilot type water discharging/stopping and flow regulating valve device |
| EP1965111A1 (en) * | 2007-02-27 | 2008-09-03 | Delabie | Self-closing valve |
| CN201762791U (en) * | 2010-09-15 | 2011-03-16 | 厦门瑞尔特卫浴工业有限公司 | Water inlet valve used for removing siphon negative pressure |
| CN203963037U (en) * | 2014-07-04 | 2014-11-26 | 厦门瑞尔特卫浴科技股份有限公司 | The antifouling mechanism of a kind of valve |
| CN208417564U (en) * | 2018-05-17 | 2019-01-22 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of novel antifouling inlet valve |
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|---|---|
| CN108443519A (en) | 2018-08-24 |
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