CN219774816U - Improved generation negative pressure valve - Google Patents
Improved generation negative pressure valve Download PDFInfo
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- CN219774816U CN219774816U CN202320663184.4U CN202320663184U CN219774816U CN 219774816 U CN219774816 U CN 219774816U CN 202320663184 U CN202320663184 U CN 202320663184U CN 219774816 U CN219774816 U CN 219774816U
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- water outlet
- water
- negative pressure
- water inlet
- fixed seat
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 250
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 238000005192 partition Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 9
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model belongs to the technical field of valves, and provides an improved negative pressure valve which comprises a fixed seat, a movable part and a sealing part; a water outlet channel is arranged in the fixed seat; the front end of the water outlet channel is provided with a water outlet port, and the rear end of the water outlet channel is provided with a water inlet port; the sealing piece is arranged in the water outlet channel, and a first elastic element is arranged between the sealing piece and the water outlet channel; the sealing piece is provided with a first magnetic element; the movable piece is sleeved outside the water outlet channel; the front side part of the movable part is matched with the inner cavity of the fixed seat, is positioned between the water outlet and the water outlet port, and is provided with a water through hole; a second elastic element is arranged between the movable piece and the fixed seat; the movable piece is provided with a second magnetic element. The utility model has good sealing performance, long service life and compact structure.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to an improved negative pressure valve.
Background
The drinking water equipment is generally provided with a negative pressure diaphragm valve so as to improve the tightness between the water source in the water tank and the outside and ensure that the water source is not polluted. However, in the diaphragm valve in the prior art, water flow can directly impact the diaphragm during water supply, so that the diaphragm is stressed greatly and is easy to damage, and the problems of poor tightness, easy water leakage, short service life and the like are caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide an improved negative pressure valve which has good reliability, good sealing performance, long service life and compact structure.
The technical scheme adopted for solving the technical problems is as follows:
an improved negative pressure valve comprises a fixed seat, a movable part and a sealing part;
a water outlet channel is arranged in the fixed seat; the front end of the water outlet channel is provided with a water outlet port along the water outlet direction, and the rear end of the water outlet channel is provided with a water inlet port; a water outlet which is connected with the negative pressure pump and used for draining water is arranged in front of the water outlet port, and a water inlet is arranged behind the water inlet port;
the sealing piece is arranged in the water outlet channel, a first elastic element is arranged between the sealing piece and the water outlet channel, and under the elastic action of the first elastic element, the sealing piece is always abutted against the rear side of the water outlet port so as to seal the water outlet port; the sealing piece is provided with a first magnetic element;
the movable piece is sleeved outside the water outlet channel; the front side part of the movable part is matched with the inner cavity of the fixed seat, is positioned between the water outlet and the water outlet port, and is provided with a water through hole; a second elastic element is arranged between the movable piece and the fixed seat, and the elastic force of the second elastic element always promotes the movable piece to move to one side far away from the water outlet; the movable piece is provided with a second magnetic element; the fixed seat is provided with a first vent hole, and the first vent hole is positioned at one side of the movable piece away from the water outlet;
under the action of a negative pressure pump, the movable piece overcomes the elasticity of the second elastic element and moves to one side close to the water outlet; when the movable piece moves to a designated position, the second magnetic element and the first magnetic element generate magnetic attraction and cause the first magnetic element to deflect so as to open the water outlet port to realize water drainage.
Preferably, an intermediate baffle is arranged at the rear end of the water outlet channel, a plurality of water passing holes are formed in the intermediate baffle, and a plurality of water passing holes form the water inlet.
Preferably, a water inlet lower cover is arranged at the rear side of the fixed seat, and the water inlet lower cover is detachably connected with the fixed seat; the water inlet is arranged at one side of the water inlet lower cover, which is far away from the fixed seat; the water inlet lower cover is internally provided with a water inlet channel, and the water inlet port and the water inlet are respectively arranged at two ends of the water inlet channel.
Preferably, a second ventilation hole is formed in one side, away from the fixed seat, of the water inlet lower cover; the water inlet lower cover is internally provided with a piston, the piston is sleeved outside the water inlet channel, and the outer circumferential surface of the piston is abutted against the inner wall of the water inlet lower cover.
Preferably, one end of the first elastic element acts on the intermediate partition and the other end of the first elastic element acts on the seal.
Preferably, the sealing member is spherical and larger than the water outlet port; the first magnetically attractable element is disposed inside the seal.
Preferably, the water outlet channel comprises a first water outlet section and a second water outlet section, the second water outlet section is positioned in front of the first water outlet section, and the first water outlet section is larger than the second water outlet section; the water outlet port is arranged on the second water outlet section.
Preferably, the water through holes and the water outlet are staggered.
Preferably, the front side of the fixing seat is provided with a water outlet upper cover, and the water outlet upper cover is detachably connected with the fixing seat; the water outlet upper cover is provided with a water outlet cavity which is arranged in a protruding mode, and the water outlet is communicated with the water outlet cavity.
Preferably, when the water supply is stopped, the front side of the movable part abuts against the front side of the water outlet under the action of the elastic force of the second elastic element.
Compared with the prior art, the utility model has the beneficial effects that:
according to the improved negative pressure valve, under the action of negative pressure generated by the operation of the negative pressure pump, the movable piece is driven to move towards the water outlet direction, so that the second magnetic element has an adsorption effect on the first magnetic element, the sealing piece swings towards the side close to the second magnetic element, the opening of the water outlet port is realized, and the water outlet control is completed. When the negative pressure pump stops running, the elastic force of the second elastic element drives the movable piece to move backwards and reset, the second magnetic element on the movable piece is staggered with the first magnetic element on the sealing piece, and no adsorption effect is generated, so that the sealing piece is restored to the original position under the action of the first elastic element, the water outlet port is blocked, and the water cut-off control is completed.
The improved negative pressure valve provided by the utility model has the advantages that the diaphragm water retaining structure is eliminated, the sealing piece and the movable piece are combined with the elastic force of the first elastic element and the second elastic element for use, the strength of parts is effectively enhanced, and the parts are not easy to damage by water impact. And after the negative pressure pump stops running, the movable piece loses the trend of moving forwards under the action of negative pressure, and simultaneously under the action of the second elastic element, the movable piece can move backwards and reset quickly and stably, so that the second magnetic element and the first magnetic element are staggered, and the sealing piece can quickly return to block the water outlet port by combining the elastic action of the first elastic element, and sealing and water cutting of the negative pressure valve are realized. In addition, the sealing member is located the rear side of apopore, under the elasticity effect of first elastic element, the sealing member is supported tightly at apopore rear side all the time to realize sealed effect, combine the water inlet pressure of water inlet, make the sealing member to apopore's sealed effect can further promote, prevent effectively that leaking, the structure is reliable stable, is favorable to extension life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of an improved negative pressure valve of the present utility model (water outlet state, solid arrows in the figure indicate water flow direction, and broken arrows indicate air flow direction).
Fig. 2 is a cross-sectional view (sealing state) of the improved negative pressure valve of the present utility model.
Fig. 3 is a cross-sectional exploded view of the improved negative pressure valve of the present utility model.
Fig. 4 is a perspective exploded view of the improved negative pressure valve of the present utility model.
Fig. 5 is a perspective view of a fixing seat of the improved negative pressure valve of the present utility model.
Fig. 6 is a perspective view of a movable member of the improved negative pressure valve of the present utility model.
Wherein:
the device comprises a fixed seat, a 2-movable part, a 3-water outlet channel, a 4-sealing part, a 5-first elastic element, a 6-middle partition plate, a 7-water inlet lower cover, an 8-first magnetic element, a 9-second magnetic element, a 10-water outlet port, an 11-water outlet hole, a 12-piston, a 13-silica gel pad, a 14-water inlet channel, a 15-first vent hole, a 16-second vent hole, a 17-water outlet hole, a 18-second elastic element, a 19-water outlet upper cover, a 20-water outlet cavity, a 21-convex ring, a 22-extension part, a 23-first sealing ring, a 24-second sealing ring, a 25-third sealing ring, a 26-fourth sealing ring, a 27-guide bar and a 28-guide groove.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. The embodiments of the present utility model and the features in the embodiments may be combined with each other without collision. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, and the described embodiments are merely some, rather than all, embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Example 1
Referring to fig. 1-6, the present embodiment discloses an improved negative pressure valve, which comprises a fixed seat 1, a movable member 2 and a sealing member 4.
A water outlet channel 3 is arranged in the fixed seat 1; along the water outlet direction, the front end of the water outlet channel 3 is provided with a water outlet port 10, and the rear end of the water outlet channel 3 is provided with a water inlet port; a water outlet which is connected with a negative pressure pump and used for draining is arranged in front of the water outlet port 10, and a water inlet is arranged behind the water inlet port; the water inlet, the water inlet port, the water outlet port 10 and the water outlet are arranged on the same straight line.
The sealing element 4 is arranged in the water outlet channel 3, is spherically arranged and is larger than the water outlet port 10; the sealing member 4 is provided with a first magnetic attraction element 8, and the first magnetic attraction element 8 is arranged inside the sealing member 4. In this embodiment, the first magnetic element 8 may be an iron block or other metal element, and a silica gel molding technology may be adopted to wrap silica gel on the surface of the spherical iron block, so as to form the spherical sealing element 4. A first elastic element 5 is arranged between the sealing member 4 and the water outlet channel 3, the first elastic element 5 can be a spring, preferably, the first elastic element 5 in the embodiment is a tower spring; under the elastic force of the first elastic element 5, the sealing element 4 is always abutted against the rear side of the water outlet port 10 to seal the water outlet port 10. Further, the sealing member 4 of the present embodiment is provided with an extension 22 for fitting with a tower spring for fixing both.
The movable part 2 is sleeved outside the water outlet channel 3; the front side part of the movable part 2 is matched with the inner cavity of the fixed seat 1, is positioned between the water outlet and the water outlet port 10, and is provided with a water through hole 17. A second elastic element 18 is arranged between the movable piece 2 and the fixed seat 1, and the elastic force of the second elastic element 18 always promotes the movable piece 2 to move to one side far away from the water outlet; the movable part 2 is provided with a second magnetic attraction element 9. The second elastic element 18 is a spring, and the second magnetic element 9 is a magnet; of course, the second elastic element 18 and the second magnetic element 9 may also be components having the same function in the prior art.
When water is required to be drained, the negative pressure pump operates, and under the action of negative pressure, the movable piece 2 overcomes the elasticity of the second elastic element 18 and moves to one side close to the water outlet; when the movable piece 2 moves to the designated position, the second magnetic element 9 and the first magnetic element 8 generate magnetic attraction and cause the first magnetic element 8 to swing so as to open the water outlet port 10 to realize water discharge.
In order to enable the movable member 2 to move stably, two guide strips 27 extending along the axial direction are arranged on the inner wall of the fixed seat 1 in the embodiment; meanwhile, two guide grooves 28 are correspondingly arranged on the outer wall of the movable piece 2. Through the cooperation of guide way 28 and gib block 27, realize the direction when moving of moving part 2, when improving stability, also ensure that moving part 2 can follow the play water direction and remove, avoid taking place to rotate and influence out the water effect. Of course, the number of the guide bars 27 and the guide grooves 28 can be flexibly set.
The rear end of the water outlet channel 3 of this embodiment is provided with a middle partition plate 6, the middle partition plate 6 is provided with a plurality of water passing holes 11, and the water passing holes 11 form water inlet ports. The water flow enters from the water inlet, passes through the water inlet port and then enters the water outlet channel 3, and at the moment, the water flow is separated and split due to the arrangement of the middle partition plate 6, so that the hydraulic impact force is effectively slowed down, the impact and the stress on the sealing element 4 and other parts are reduced, and the protection of the internal parts of the improved negative pressure valve is facilitated. Meanwhile, in the water outlet state, the water flow impact force is reduced, so that the pressure on the sealing piece 4 is reduced, the second magnetic element 9 and the first magnetic element 8 are easier to act, and the first magnetic element 8 deflects to realize water drainage.
One end of the first elastic element 5 acts on the intermediate partition 6 and the other end of the first elastic element 5 acts on the extension 22 of the seal 4. Because the first elastic element 5 of this embodiment adopts a tower spring, the larger end of the tower spring can be abutted against the middle partition plate 6, and the smaller end can be abutted against the sealing element 4, so as to improve the stability of the sealing element 4.
The rear side of the fixing seat 1 of the embodiment is provided with an underwater intake cover 7, and the underwater intake cover 7 is detachably connected with the fixing seat 1; the water inlet is arranged at one side of the water inlet lower cover 7 far away from the fixed seat 1; a water inlet channel 14 is arranged in the water inlet lower cover 7, and a water inlet port and a water inlet are respectively arranged at two ends of the water inlet channel 14.
Further, a first vent hole 15 is formed in one side, far away from the water outlet, of the fixed seat 1, and a second vent hole 16 is formed in one side, far away from the fixed seat 1, of the water inlet lower cover 7; the water inlet lower cover 7 is internally provided with a piston 12, the piston 12 is sleeved outside the water inlet channel 14, and the outer circumferential surface of the piston 12 is abutted against the inner wall of the water inlet lower cover 7. Through the arrangement of the first vent hole 15 and the second vent hole 16, the air pressure balance in the inner cavity of the fixed seat 1 is realized, so that the movement of the movable piece 2 is realized. Meanwhile, a piston 12 is arranged in the water inlet lower cover 7, so that the air inlet and outlet functions are realized when the movable piece 2 moves, and the sealing performance of the water inlet lower cover 7 is improved. Specifically, the piston 12 in this embodiment is made of silica gel, so as to improve the sealing effect; meanwhile, a silica gel pad 13 is arranged in the piston 12 to improve the strength of the piston 12 and avoid deformation.
The water outlet channel 3 of the embodiment comprises a first water outlet section and a second water outlet section, wherein the second water outlet section is positioned in front of the first water outlet section, and the first water outlet section is larger than the second water outlet section; the water outlet port 10 is arranged on the second water outlet section.
In this embodiment, the water through holes 17 on the movable member 2 are staggered from the water outlet ports 10. In this embodiment, two water through holes 17 are provided and are respectively located at two sides of the water outlet port 10; of course, a different number of water through holes 17 may be provided. The water through holes 17 and the water outlet ports 10 are staggered, so that the water through holes 17 and the water outlet ports 10 are prevented from forming suction under the action of a negative pressure pump, the adsorption action of the negative pressure pump on the sealing piece 4 is effectively lightened, the sealing piece 4 is enabled to form adsorption deflection under the action of the second magnetic attraction element 9, and the water outlet ports 10 are further smoothly opened.
The front side of the fixed seat 1 is provided with a water outlet upper cover 19, and the water outlet upper cover 19 is detachably connected with the fixed seat 1; the water outlet upper cover 19 is provided with a water outlet cavity 20 which is arranged in a protruding way, and the water outlet is communicated with the water outlet cavity 20. Further, the front side portion of the movable member 2 in this embodiment is provided with a convex ring 21, and the second elastic element 18 is a spring, one end of which is sleeved on the convex ring 21, and the other end of which abuts against the water outlet cavity 20, so as to form an elastic action on the movable member 2. In addition, the inner cavity of the water outlet upper cover 19 and the inner cavity of the fixed seat 1 form a movable cavity for the movable part 2 to slide, when the movable part 2 moves forwards to the top of the inner cavity of the water outlet upper cover 19, the movable part 2 reaches a limit position, the second magnetic element 9 corresponds to the first magnetic element 8 at the moment, the first magnetic element 8 generates an adsorption effect, and the sealing part 4 is caused to swing to open the water outlet port 10.
In order to improve the sealing performance of the improved negative pressure valve, the improved negative pressure valve of the embodiment is provided with sealing rings at the matching positions of all parts so as to improve the sealing and water leakage preventing effects. Specifically, a first sealing ring 23 is arranged between the water inlet lower cover 7 and the fixed seat 1, a second sealing ring 24 is arranged between the outer wall of the water outlet channel 3 and the inner wall of the movable piece 2, a third sealing ring 25 is arranged between the water outlet upper cover 19 and the fixed seat 1, and a fourth sealing ring 26 is arranged on the outer wall of the movable piece 2.
When the water supply is stopped, the front side of the movable member 2 is abutted against the front side of the water outlet 10 under the elastic force of the second elastic member 18. In this way, when the water supply is stopped, that is, when the negative pressure pump stops running, the elastic force of the second elastic element 18 drives the movable element 2 to move backwards and reset, the front side part of the movable element 2 is abutted against the water outlet port 10, a water blocking sealing effect is formed on the front side of the water outlet port 10, and at the moment, double sealing is formed with the water blocking seal of the sealing element 4 on the rear side of the water outlet port 10, so that the water leakage preventing effect of the improved negative pressure valve is effectively improved.
The present utility model is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present utility model are within the scope of the technical proposal of the present utility model.
Claims (10)
1. An improved negative pressure valve is characterized by comprising a fixed seat, a movable piece and a sealing piece;
a water outlet channel is arranged in the fixed seat; the front end of the water outlet channel is provided with a water outlet port along the water outlet direction, and the rear end of the water outlet channel is provided with a water inlet port; a water outlet which is connected with the negative pressure pump and used for draining water is arranged in front of the water outlet port, and a water inlet is arranged behind the water inlet port;
the sealing piece is arranged in the water outlet channel, a first elastic element is arranged between the sealing piece and the water outlet channel, and under the elastic action of the first elastic element, the sealing piece is always abutted against the rear side of the water outlet port so as to seal the water outlet port; the sealing piece is provided with a first magnetic element;
the movable piece is sleeved outside the water outlet channel; the front side part of the movable part is matched with the inner cavity of the fixed seat, is positioned between the water outlet and the water outlet port, and is provided with a water through hole; a second elastic element is arranged between the movable piece and the fixed seat, and the elastic force of the second elastic element always promotes the movable piece to move to one side far away from the water outlet; the movable piece is provided with a second magnetic element; the fixed seat is provided with a first vent hole, and the first vent hole is positioned at one side of the movable piece away from the water outlet;
under the action of a negative pressure pump, the movable piece overcomes the elasticity of the second elastic element and moves to one side close to the water outlet; when the movable piece moves to a designated position, the second magnetic element and the first magnetic element generate magnetic attraction and cause the first magnetic element to deflect so as to open the water outlet port to realize water drainage.
2. The improved negative pressure valve of claim 1, wherein a middle partition plate is arranged at the rear end of the water outlet channel, a plurality of water passing holes are arranged on the middle partition plate, and a plurality of water passing holes form the water inlet port.
3. The improved negative pressure valve according to claim 1 or 2, wherein a water inlet lower cover is arranged at the rear side of the fixed seat, and the water inlet lower cover is detachably connected with the fixed seat; the water inlet is arranged at one side of the water inlet lower cover, which is far away from the fixed seat; the water inlet lower cover is internally provided with a water inlet channel, and the water inlet port and the water inlet are respectively arranged at two ends of the water inlet channel.
4. The improved negative pressure valve of claim 3, wherein a second vent hole is formed in the side of the water inlet lower cover away from the fixed seat; the water inlet lower cover is internally provided with a piston, the piston is sleeved outside the water inlet channel, and the outer circumferential surface of the piston is abutted against the inner wall of the water inlet lower cover.
5. The improved negative pressure valve of claim 2, wherein one end of the first resilient element acts on the intermediate diaphragm and the other end of the first resilient element acts on the seal.
6. The improved negative pressure valve of claim 1, wherein the seal is spherical and larger than the outlet port; the first magnetically attractable element is disposed inside the seal.
7. The improved negative pressure valve of claim 1, wherein the outlet passage includes a first outlet section and a second outlet section, the second outlet section being positioned in front of the first outlet section, the first outlet section being larger than the second outlet section; the water outlet port is arranged on the second water outlet section.
8. The improved negative pressure valve of claim 1, wherein the water passage is offset from the water outlet port.
9. The improved negative pressure valve of claim 1, wherein the front side of the fixed seat is provided with a water outlet upper cover, and the water outlet upper cover is detachably connected with the fixed seat; the water outlet upper cover is provided with a water outlet cavity which is arranged in a protruding mode, and the water outlet is communicated with the water outlet cavity.
10. The improved negative pressure valve according to claim 1, wherein the front side portion of the movable member abuts against the front side of the water outlet port under the elastic force of the second elastic member when the water supply is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320663184.4U CN219774816U (en) | 2023-03-29 | 2023-03-29 | Improved generation negative pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320663184.4U CN219774816U (en) | 2023-03-29 | 2023-03-29 | Improved generation negative pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219774816U true CN219774816U (en) | 2023-09-29 |
Family
ID=88102995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320663184.4U Active CN219774816U (en) | 2023-03-29 | 2023-03-29 | Improved generation negative pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219774816U (en) |
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2023
- 2023-03-29 CN CN202320663184.4U patent/CN219774816U/en active Active
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