CN213629089U - Constant pressure water-saving valve - Google Patents
Constant pressure water-saving valve Download PDFInfo
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- CN213629089U CN213629089U CN202021971888.0U CN202021971888U CN213629089U CN 213629089 U CN213629089 U CN 213629089U CN 202021971888 U CN202021971888 U CN 202021971888U CN 213629089 U CN213629089 U CN 213629089U
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- valve
- valve seat
- water
- sleeve
- seat
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Abstract
A constant-pressure water-saving valve consists of a valve seat, a valve core, a spring, a valve sleeve and a sealing ring, wherein the valve seat is a cylinder provided with a central through hole, the water inlet end of the valve seat is provided with a circle of valve seat limiting platform protruding inwards, the outer wall of the water inlet end of the valve seat is provided with a valve seat outer protruding edge protruding outwards, and the inner wall of the valve seat is also provided with a circle of valve seat grooves recessed outwards; the valve core comprises a valve body and a valve rod, the diameter of the valve body is equal to or smaller than the diameter of an inner hole of the valve seat, and a main water channel penetrating through the valve body and the valve rod is arranged on the valve core. The utility model has certain pressure loss to the high pressure water supply with different pressure, forms the low pressure water supply with relatively stable water yield, when the water pressure is smaller, the force of the water flow is not enough to push the valve core to move in the valve seat, and the water flow is reduced; when the water pressure is too high, the valve body is abutted to the valve sleeve, a gap between the valve body and the valve sleeve disappears, the auxiliary water channel is closed, only the main water channel can discharge water, and therefore the flow control effect is achieved.
Description
Technical Field
The utility model belongs to a constant pressure water-saving valve belongs to the water conservation and connects the field.
Background
Usually, the water pressure of a water faucet is 0.1MPa at the pipe diameter of 15mm, the requirement of the maximum flow rate of 9 liters/minute is met, but when the water pressure exceeds 0.1MPa, the flow rate is increased along with the increase of the water pressure, generally reaches 14-18 liters/minute at the water pressure of 0.2MPa, and reaches 15-23 liters/minute at the water pressure of 0.3 MPa. Most of the water supply pressures are greater than 0.1MPa, even greater than 0.2MPa, so that the actual flow of the water faucet is greater than the appropriate water flow (for most water using modes, the optimal flow of the water faucet is 6-8L/min), a serious overpressure outflow phenomenon exists, and waste of water resources is caused.
Therefore, it is desirable to design a water saving valve that can effectively control the amount of water output.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the constant-pressure water-saving valve is arranged on a water faucet, so that the water faucet can keep relatively constant water yield under different water supply pressures, and waste of water resources is reduced.
The technical scheme of the utility model is that: a constant-pressure water-saving valve consists of a valve seat 1, a valve core 2, a spring 3, a valve sleeve 4 and a sealing ring 5, wherein the valve seat is a cylinder provided with a central through hole, the water inlet end of the valve seat 1 is provided with a circle of valve seat limiting platform 11 protruding inwards, the outer wall of the water inlet end of the valve seat is provided with a valve seat outer flange protruding outwards, and the constant-pressure water-saving valve is hung at the water inlet end of a faucet through the valve seat outer flange; a circle of valve seat grooves 12 which are sunken outwards are also arranged on the inner wall of the valve seat; the valve core 2 comprises a valve body 21 and a valve rod 22, the diameter of the valve body is equal to or smaller than the diameter of an inner hole of the valve seat, a main water channel 23 penetrating through the valve body and the valve rod is arranged on the valve core, and the diameter of the main water channel is smaller than the diameter of the inner hole of the valve seat limiting platform; the valve sleeve is a cylinder with a central through hole, and the outer wall of the valve sleeve is provided with a valve sleeve clamping ring 41 which corresponds to the valve seat groove 12 on the inner wall of the valve seat and protrudes outwards; two valve seat flanges 42 which are parallel to each other and protrude outwards are arranged outside the valve sleeve, a sealing groove 43 is formed in a gap between the two valve seat flanges, and the sealing ring is arranged in the sealing groove; when the valve sleeve is pressed into the valve seat from the water outlet end, the valve sleeve clamping ring enters the valve seat groove, the valve seat and the valve sleeve are mutually meshed to play a sealing role, the valve seat flange close to the valve sleeve clamping ring is pressed on the end surface of the valve seat facing the water outlet end to play a further sealing role, and water is prevented from flowing out from a gap between the valve sleeve and the valve seat; the wall of the valve sleeve facing the water outlet end extends towards the direction of the central through hole of the valve sleeve to form a valve rod limiting platform, a valve core hole 44 matched with the outer wall of the valve rod is formed in the center of the valve rod limiting platform, and the valve core can axially move along the valve core hole under the action of external force; a plurality of drain holes 45 are arranged on the valve rod limiting platform around the valve core hole; the valve core is placed into the valve seat in a mode that the valve rod faces the water outlet end, the valve body is arranged on the valve seat limiting platform, the spring is sleeved on the valve rod, the valve sleeve is pressed into the valve seat, the valve sleeve clamping ring enters the valve seat groove, the valve sleeve is meshed with the valve seat, the valve sleeve compresses the spring, the spring compresses the valve body of the valve core on the valve seat limiting platform, and the valve rod enters the valve core hole.
A plurality of auxiliary water channels 13 which penetrate through the valve seat and are uniformly distributed and sunken outwards are arranged along the inner wall of the valve seat.
The crossing part of the auxiliary water channel and the valve seat limiting platform is expanded inwards to form a pressure hole 14.
The outer wall of the valve body is provided with more than two anti-rotation keys 24 which protrude outwards and can enter the auxiliary water channels 13, and the anti-rotation keys can axially move by taking any one auxiliary water channel as a channel.
The anti-rotation key is provided with a water passage, so that the water passage can pass below the anti-rotation key to flow above the anti-rotation key.
The auxiliary water channel is a small-diameter semicircular groove or a square groove or other multi-side grooves.
The pressure hole is an arc-shaped body formed by arching from the edge of the auxiliary water channel to the center of the valve seat on the valve seat limiting platform.
The water inlet end of the valve sleeve is provided with a flow guiding conical surface, and the flow guiding conical surface can form tight fit with the outer wall of the valve body.
The wall surface of the valve body facing the water outlet end is provided with a circle of spring groove, and the spring is arranged in the spring groove. The valve sleeve is made of hard plastics.
Advantageous effects
1. When the water pressure is small, the force of the water flow is not enough to push the valve core to move in the valve seat, the water flow is divided into two parts, one part flows into the faucet from the main water channel, the other part flows into a gap between the valve sleeve and the valve core from the auxiliary water channel, and then flows into the faucet from a water discharge hole in the valve sleeve, when the water pressure is gradually increased, the water flow pushes the valve core to move towards the water outlet end by overcoming the pressure of the spring from a valve core hole until the tension of the spring and the pressure of the water form new stability, the length of the auxiliary water channel between the valve body and the valve sleeve is reduced, namely the opening degree of the auxiliary water channel is reduced, which is similar to the reduction of the pipe diameter of the water supply, so that certain pressure loss is formed, and the water flow is;
2. when the water pressure is too high, the valve body is abutted to the valve sleeve, a gap between the valve body and the valve sleeve disappears, the auxiliary water channel is closed, only the main water channel can discharge water, and therefore the flow control effect is achieved.
Drawings
Fig. 1 is a perspective view of an angle of the present invention;
fig. 2 is a perspective view of another angle of the present invention;
FIG. 3 is a schematic diagram of the explosion of the present invention;
FIG. 4 is a partial cross-sectional view of the valve seat;
fig. 5 is a schematic view of the valve sleeve;
fig. 6 is a partial cross-sectional view of the valve sleeve;
FIG. 7 is a schematic view of the valve cartridge in partial section;
fig. 8 is a partially cut-away schematic view of the present invention when water pressure is low;
FIG. 9 is a partially cut-away view of the present invention when the water pressure is too high;
fig. 10 is a schematic view of an application state of the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10 when the water pressure is low;
FIG. 12 is an enlarged view of a portion of FIG. 10 at a higher water pressure;
fig. 13 is a partially enlarged view of fig. 10 when the water pressure is excessive.
Detailed Description
As shown in fig. 1 to 13, the constant pressure water saving valve comprises a valve seat 1, a valve core 2, a spring 3, a valve sleeve 4 and a sealing ring 5.
The valve seat is a cylinder with a central through hole, the water inlet end of the valve seat 1 is provided with a circle of valve seat limiting platform 11 protruding inwards, the outer wall of the water inlet end of the valve seat is provided with an outward protruding valve seat outer flange, and the constant-pressure water-saving valve is hung at the water inlet end of the faucet through the valve seat outer flange; a circle of valve seat grooves 12 which are concave outwards are also arranged on the inner wall of the valve seat.
The valve core 2 comprises a valve body 21 and a valve rod 22, the diameter of the valve body is equal to or smaller than the diameter of an inner hole of the valve seat, a main water channel 23 penetrating through the valve body and the valve rod is arranged on the valve core, and the diameter of the main water channel is smaller than the diameter of the inner hole of the valve seat limiting platform.
The valve sleeve is a cylinder with a central through hole, and the outer wall of the valve sleeve is provided with a valve sleeve clamping ring 41 which corresponds to the valve seat groove 12 on the inner wall of the valve seat and protrudes outwards; two valve seat flanges 42 which are parallel to each other and protrude outwards are arranged outside the valve sleeve, a sealing groove 43 is formed in a gap between the two valve seat flanges, and the sealing ring is arranged in the sealing groove; when the valve sleeve is pressed into the valve seat from the water outlet end, the valve sleeve clamping ring enters the valve seat groove, the valve seat and the valve sleeve are mutually meshed to play a sealing role, the valve seat flange close to the valve sleeve clamping ring is pressed on the end surface of the valve seat facing the water outlet end to play a further sealing role, and water is prevented from flowing out from a gap between the valve sleeve and the valve seat; the wall of the valve sleeve facing the water outlet end extends towards the direction of the central through hole of the valve sleeve to form a valve rod limiting platform, a valve core hole 44 matched with the outer wall of the valve rod is formed in the center of the valve rod limiting platform, and the valve core can axially move along the valve core hole under the action of external force; a plurality of drain holes 45 are provided in the valve stem limiting platform around the spool bore.
The valve core is placed into the valve seat in a mode that the valve rod faces the water outlet end, the valve body is arranged on the valve seat limiting platform, the spring is sleeved on the valve rod, the valve sleeve is pressed into the valve seat, the valve sleeve clamping ring enters the valve seat groove, the valve sleeve is meshed with the valve seat, the valve sleeve compresses the spring, the spring compresses the valve body of the valve core on the valve seat limiting platform, and the valve rod enters the valve core hole. A plurality of auxiliary water channels 13 which penetrate through the valve seat and are uniformly distributed and sunken outwards are arranged along the inner wall of the valve seat. The auxiliary water channel is a small-diameter semicircular groove or a square groove or other multi-side grooves.
The crossing part of the auxiliary water channel and the valve seat limiting platform is expanded inwards to form a pressure hole 14.
The outer wall of the valve body is provided with more than two anti-rotation keys 24 which protrude outwards and can enter the auxiliary water channels 13, and the anti-rotation keys can axially move by taking any one auxiliary water channel as a channel.
The anti-rotation key is provided with a water passage, so that the water passage can pass below the anti-rotation key to flow above the anti-rotation key.
When the constant-pressure water-saving valve is used, the constant-pressure water-saving valve is placed at the water inlet end of the faucet, the faucet is screwed on a pipeline through the positioning of the outer flange of the valve seat, the sealing ring is tightly matched with the inner wall of the faucet, and water passing through the faucet flows through the constant-pressure water-saving valve.
When the water pressure is low, the force of the water flow is not enough to push the valve core to move in the valve seat, the water flow is divided into two parts, one part flows into the faucet from the main water channel, the other part flows into a gap between the valve sleeve and the valve core from the auxiliary water channel, and then flows into the faucet from the water discharge hole in the valve sleeve, when the water pressure is gradually increased, the water flow pushes the valve core to move towards the water outlet end from the valve core hole by overcoming the pressure of the spring until the tension of the spring and the pressure of water form new stability, the length of the auxiliary water channel between the valve body and the valve sleeve is reduced, namely the opening degree of the auxiliary water channel is reduced, which is similar to the reduction of the; when the water pressure is too high, the valve body is abutted to the valve sleeve, a gap between the valve body and the valve sleeve disappears, the auxiliary water channel is closed, only the main water channel can discharge water, and therefore the flow control effect is achieved.
The diameter of the valve body is slightly smaller than the diameter of an inner hole of the valve seat, water flows into the auxiliary water channel from the pressure hole, and can flow to the auxiliary water hole from a gap between the valve body and the inner wall of the valve seat, the pressure of the water flows on the valve body, when the water pressure is enough to overcome the tension of the spring, the valve core can be pushed to move towards the direction of the water outlet end, so that the length of the auxiliary water channel is shortened, when the water pressure is too large, the valve body is pressed on the valve sleeve, the auxiliary water channel is closed, the water flows out only from the main water channel, when the pressure of the water flow is reduced, under the tension of the spring, the valve core is pushed to the valve seat limiting platform, the length of the auxiliary water channel between the valve core and the valve sleeve is gradually increased, when the water.
The inlet side of the constant pressure water supply valve is the water supply side, and the water pressure is P1; in the outlet-side water tap, the water pressure P2; the projection area of the valve core 2 in the axial direction (namely the water flow direction) is S; the force of the spring is F, the force acting on the valve core 2 on the outlet side is F + S P2, the force acting on the valve core 2 on the inlet side is S P1, and the balance condition of the valve core 2 under the action of the water pressure on both sides is as follows: f + S P2 ═ S P1.
The valve sleeve is made of hard plastics, has a certain deformation rate, and can enter the valve seat through extrusion to form occlusion and tight fit.
The valve rod and the valve seat can be made of metal or hard plastic.
The pressure hole is an arc-shaped body formed by arching from the edge of the auxiliary water channel to the center of the valve seat on the valve seat limiting platform.
In an initial state, the spring has a free length, and F is 0; the water supply flows through the constant pressure water supply valve under the pressure of P1, and the pressure loss is caused by the fluid resistance generated by the axial projection area of the main and auxiliary flow passages and less than half of the axial projection area of the water supply pipe, and the pressure is P2, so that P2< P1; the water pressure pushes the valve core to move towards the outlet side, the valve core 2 moves to compress the spring to generate a spring force F, and when the balance condition is reached, the movement is stopped, so that the water pressure P2 at the outlet side is a certain value.
When the water supply pressure is low, the water supply quantity of the main water channel can not meet the water demand, the water supply quantity needs to be increased through the auxiliary water channel, the water supply pressure is high, the water supply quantity of the main water channel is increased, but the valve core moves to reduce or even close the opening L of the auxiliary water channel, so that the water supply of the auxiliary water channel is reduced or even no water is supplied, and the water quantity passing through the constant-pressure water supply valve is close to be constant.
A constant pressure water supply valve was installed at the inlet end of the faucet and the faucet was fully opened.
When the water pressure of the water supply is in the range of 0.1-0.6 MPa, the water outlet quantity of the faucet is 6-8 liters/minute.
When the water supply pressure is in the range of 0.6-1.14 MPa, the water outlet quantity of the faucet is 7-9 liters/minute.
When the water pressure reaches or exceeds 0.1MPa, the auxiliary water channel is closed, water flow can only flow out of the main water channel, and the aperture of the main water channel is set according to the standard.
The above embodiments are only used for illustrating and explaining the utility model, and are not intended to limit the present invention, and those skilled in the art can make various changes or substitutions within the scope of the present invention, and shall also belong to the protection scope of the present invention.
Claims (9)
1. The utility model provides a constant pressure water conservation valve comprises disk seat (1), case (2), spring (3), valve barrel (4) and sealing washer (5), its characterized in that: the water-saving faucet is characterized in that the valve seat is a cylinder provided with a central through hole, a circle of valve seat limiting platform (11) protruding inwards is arranged at the water inlet end of the valve seat (1), an outward protruding valve seat outer flange is arranged on the outer wall of the water inlet end of the valve seat, and the constant-pressure water-saving valve is hung at the water inlet end of the faucet through the valve seat outer flange; a circle of valve seat grooves (12) which are sunken outwards are also formed in the inner wall of the valve seat; the valve core (2) comprises a valve body (21) and a valve rod (22), the diameter of the valve body is equal to or smaller than the diameter of an inner hole of the valve seat, a main water channel (23) penetrating through the valve body and the valve rod is arranged on the valve core, and the diameter of the main water channel is smaller than the diameter of the inner hole of the valve seat limiting platform; the valve sleeve is a cylinder with a central through hole, and the outer wall of the valve sleeve is provided with a valve sleeve clamping ring (41) which corresponds to the valve seat groove (12) on the inner wall of the valve seat and protrudes outwards; two valve seat flanges (42) which are parallel to each other and protrude outwards are further arranged outside the valve sleeve, a sealing groove (43) is formed in a gap between the two valve seat flanges, and the sealing ring is arranged in the sealing groove; when the valve sleeve is pressed into the valve seat from the water outlet end, the valve sleeve clamping ring enters the valve seat groove, the valve seat and the valve sleeve are mutually meshed to play a sealing role, the valve seat flange close to the valve sleeve clamping ring is pressed on the end surface of the valve seat facing the water outlet end to play a further sealing role, and water is prevented from flowing out from a gap between the valve sleeve and the valve seat; the wall of the valve sleeve facing the water outlet end extends towards the direction of the central through hole of the valve sleeve to form a valve rod limiting platform, a valve core hole (44) matched with the outer wall of the valve rod is formed in the center of the valve rod limiting platform, and the valve core can axially move along the valve core hole under the action of external force; a plurality of drain holes (45) are arranged on the valve rod limiting platform around the valve core hole; the valve core is placed into the valve seat in a mode that the valve rod faces the water outlet end, the valve body is arranged on the valve seat limiting platform, the spring is sleeved on the valve rod, the valve sleeve is pressed into the valve seat, the valve sleeve clamping ring enters the valve seat groove, the valve sleeve is meshed with the valve seat, the valve sleeve compresses the spring, the spring compresses the valve body of the valve core on the valve seat limiting platform, and the valve rod enters the valve core hole.
2. The constant pressure water saving valve according to claim 1, characterized in that: a plurality of auxiliary water channels (13) which penetrate through the valve seat and are uniformly distributed and sunken outwards are arranged along the inner wall of the valve seat.
3. The constant pressure water saving valve according to claim 2, characterized in that: the intersecting part of the auxiliary water channel and the valve seat limiting platform is expanded inwards to form a pressure hole (14).
4. The constant pressure water saving valve according to claim 2, characterized in that: more than two anti-rotation keys (24) which protrude outwards and can enter the auxiliary water channels (13) are arranged on the outer wall of the valve body, and the anti-rotation keys can axially move by taking any auxiliary water channel as a channel.
5. The constant pressure water saving valve according to claim 4, characterized in that: the anti-rotation key is provided with a water passage, so that the water passage can pass below the anti-rotation key to flow above the anti-rotation key.
6. The constant pressure water saving valve according to claim 2, characterized in that: the auxiliary water channel is a semicircular groove, a square groove or other multi-side grooves.
7. The constant pressure water saving valve according to claim 3, characterized in that: the pressure hole is an arc-shaped body formed by arching from the edge of the auxiliary water channel to the center of the valve seat on the valve seat limiting platform.
8. The constant pressure water saving valve according to claim 1, characterized in that: the water inlet end of the valve sleeve is provided with a flow guiding conical surface, and the flow guiding conical surface can form tight fit with the outer wall of the valve body.
9. The constant pressure water saving valve according to claim 1, characterized in that: the wall surface of the valve body facing the water outlet end is provided with a circle of spring groove, and the spring is arranged in the spring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021971888.0U CN213629089U (en) | 2020-09-10 | 2020-09-10 | Constant pressure water-saving valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021971888.0U CN213629089U (en) | 2020-09-10 | 2020-09-10 | Constant pressure water-saving valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213629089U true CN213629089U (en) | 2021-07-06 |
Family
ID=76648453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021971888.0U Expired - Fee Related CN213629089U (en) | 2020-09-10 | 2020-09-10 | Constant pressure water-saving valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213629089U (en) |
-
2020
- 2020-09-10 CN CN202021971888.0U patent/CN213629089U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 |