CN111998079A

CN111998079A - Flow switch valve

Info

Publication number: CN111998079A
Application number: CN202010861164.9A
Authority: CN
Inventors: 肖卫军; 沈军才; 张浩棋
Original assignee: Foshan Sundream Electronics Co ltd
Current assignee: Foshan Sundream Electronics Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2020-11-27
Anticipated expiration: 2040-08-25
Also published as: CN111998079B

Abstract

The invention discloses a flow switch valve, which comprises a valve body, wherein the valve body is provided with a water inlet and a water outlet, an upper cavity and a lower cavity are arranged in the valve body, a pulse cover capable of moving up and down is arranged between the upper cavity and the lower cavity, a through hole for communicating the upper cavity with the lower cavity is formed in the pulse cover, a pressure relief channel for communicating the upper cavity with the water outlet and a water passing channel for communicating the water inlet with the lower cavity are also arranged on the valve body, the flow switch valve further comprises a rotating shaft, a driving mechanism, a valve core A and a valve core B, the rotating shaft is rotatably fixed on the valve body, one end of the rotating shaft is in transmission connection with the driving mechanism, the other end of the rotating shaft extends into the water inlet and is connected with the valve core A, the valve core A is used for adjusting the opening degree of a water passing channel port, and the valve core. The flow switch valve provided by the invention can realize the switching and flow regulation of the pulse mode control valve, and has the characteristics of energy conservation and long service life.

Description

Flow switch valve

Technical Field

The invention relates to the technical field of valves, in particular to a flow switch valve.

Background

The size of flow and the switch of control valve are adjusted through the aperture that water passageway was adjusted to the case to current flow switch valve, and the case is ceramic material or metal material usually, during the use, adopts rotatory mode to adjust the case position usually, when closing the valve, often can excessively tighten the case in order to avoid it to leak, and the time has been of a specified duration, often causes the harm to the case. In addition, in the use process, the valve core and the inner wall have friction, the friction can also cause abrasion to the valve core, and once the valve core is abraded, the phenomenon of water leakage or inaccurate water quantity adjustment can occur. Moreover, the existing flow switch valve is completely realized by adjusting the water passing channel by the valve core, and the torque borne by the rotating shaft is large, so that the energy consumption is higher. Therefore, a new flow regulating control switch is urgently needed.

It is seen that improvements and enhancements to the prior art are needed.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a flow switch valve, aiming at solving the defects that the flow switch valve in the prior art is high in energy consumption and easy to damage a valve core.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a flow switch valve, includes the valve body, and the valve body has water inlet and delivery port, wherein, be equipped with cavity and lower cavity in the valve body, it is equipped with the pulse lid that can reciprocate to go up between cavity and the lower cavity, the pulse is covered and is equipped with the through-hole of cavity and lower cavity in the intercommunication, still be equipped with the pressure release passageway of cavity and delivery port in the intercommunication on the valve body to and the water channel of intercommunication water inlet and lower cavity, flow switch valve still includes pivot, actuating mechanism, case A and case B, the pivot is rotatable to be fixed on the valve body, and the one end and the actuating mechanism transmission of pivot are connected, and the other end stretches into the water inlet and is connected with case A, case A is used for adjusting the aperture of crossing the water channel mouth, case B fixed connection is in the position that the pivot corresponds the pressure release channel mouth for the switch of control.

In the flow switch valve, the diameter of the pressure relief channel opening is larger than that of the through hole.

In the flow switch valve, still be equipped with the support ring in the cavity of resorption, the internal diameter of support ring is the same with the internal diameter of last cavity, the pulse lid is including diaphragm lid and diaphragm, and the connection can be dismantled to diaphragm lid and diaphragm, the diaphragm still is equipped with the soft portion of connecting of U-shaped in the edge, the border clamping of the soft portion of connecting of U-shaped is between the bottom border of support ring and last cavity.

In the flow switch valve, the diaphragm cover is made of hard materials, and the diaphragm is made of soft materials.

In the flow switch valve, the port of the pressure relief channel extends into the upper cavity, the port is opened upwards, the valve core B is provided with a pressure rod, the end of the pressure rod is provided with a rubber column, the rubber column is opposite to the port of the pressure relief channel, and the area of the cylindrical surface of the rubber column is larger than that of the port of the pressure relief channel.

In the flow switch valve, a fan-shaped pressing block is further arranged on the valve core B, and the pressing block is abutted to the top end of the pulse cover.

In the flow switch valve, the valve body is provided with two symmetrical water passing channels at the water inlet, the valve core A is provided with two symmetrical fan-shaped columns, and the area of the cambered surfaces of the fan-shaped columns is larger than that of the water passing channel openings.

In the flow switch valve, a fixed block is arranged on the side wall of the upper cavity, a dredging rod penetrating through the through hole is arranged on the solid block, and the diameter of the dredging rod is smaller than that of the through hole.

In the flow switch valve, the driving mechanism comprises a stepping motor and a connecting shaft sleeve, one end of the connecting shaft sleeve is connected with the output end of the stepping motor, the other end of the connecting shaft sleeve is connected with a rotating shaft,

in the flow switch valve, be equipped with the calibration piece on the axle sleeve, the position that valve body 1 corresponds the calibration piece is equipped with the detection opto-coupler, it is used for step motor's calibration to detect the opto-coupler.

Has the advantages that:

the invention provides a flow switch valve, which controls the on-off of the valve and the adjustment of flow by arranging a pulse cover and utilizing the difference of the upper water pressure and the lower water pressure of the pulse cover, and the water flow switch and the water quantity adjustment mode can be realized without applying external force to the pulse cover, so that the control is easy, the flow change is stable, and the overall energy consumption of the valve is reduced; in addition, the pulse cover is made of non-rigid materials, so that the pulse cover is small in abrasion in the using process and not easy to damage, the maintenance cost is reduced, and the service life is prolonged.

Drawings

FIG. 1 is a perspective view of a flow switching valve provided by the present invention;

FIG. 2 is a top view of the flow switching valve;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a first schematic diagram of the internal structure;

FIG. 6 is a second schematic view of the internal structure;

FIG. 7 is a schematic structural view of the bottom cover;

FIG. 8 is an exploded view of the pulse cap;

FIG. 9 is a schematic cross-sectional view of a pulse cap;

fig. 10 is a schematic structural diagram of the driving mechanism, the rotating shaft, the valve core a and the valve core B.

Detailed Description

The present invention provides a thermostatic valve, and in order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are usually placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-10, the invention provides a flow switch valve, which comprises a valve body 1, wherein the valve body 1 is columnar as a whole, a top cover 2 is arranged at the top end of the valve body 1, a bottom cover 3 is arranged at the bottom end of the valve body 1, a water inlet 4 is arranged on the side wall of the valve body 1, a water outlet 5 is arranged on the bottom cover 3, an annular groove 6 surrounding the water outlet is arranged on the bottom cover 3, a pulse cover (comprising a diaphragm cover 7 and a diaphragm 8) capable of moving up and down is arranged on the annular groove 6, the inner cavity of the valve body 1 is divided into an upper part and a lower part by the pulse cover, a cavity above the pulse cover is an upper cavity 9, a space formed by the pulse cover and the annular groove 6 is a lower cavity; the valve body 1 is also provided with a water passing channel 12 for communicating the water inlet with the lower cavity 10 and a pressure relief channel 13 for communicating the upper cavity 9 with the water outlet; the flow switch valve further comprises a rotating shaft 14, a driving mechanism 15, a valve core A16 and a valve core B17, wherein the rotating shaft 14 penetrates through the upper cavity 9, one end of the rotating shaft is in transmission connection with the driving mechanism 15, the other end of the rotating shaft extends into the water inlet 4 and is rotatably connected to the valve body 1, the valve core A16 is fixedly connected to the position, corresponding to the inlet of the water channel 12, of the rotating shaft 14 and used for controlling the opening degree of the inlet of the water channel 12, the valve core B17 is fixedly connected to the position, corresponding to the inlet of the pressure release channel 13, of the rotating shaft 14 and used for controlling the opening degree of the inlet of the pressure release channel 13, the driving mechanism 15 is fixed to one.

When the water flow switch valve is opened, the water passing channel 12 is communicated with the water inlet and the lower cavity 10, meanwhile, the pressure relief channel 13 is communicated with the upper cavity 9 and the water outlet 5, water flow enters the lower cavity 10 from the water inlet 4 through the water passing channel 12, at the moment, part of water enters the upper cavity 9 through the through hole 11, however, since the pressure relief passage 13 of the upper chamber 9 is in an open state, the water in the upper chamber 9 flows out through the pressure relief passage 13, so that the water pressure of the lower cavity 10 is higher than that of the upper cavity 9, the pulse cover is jacked upwards, the lower cavity 10 is communicated with the water outlet 5, and as the opening degree of the water channel 12 is larger, the pressure difference between the upper cavity 9 and the lower cavity 10 is larger, the upward moving distance of the pulse cover is larger, and the flow rate is larger. When the flow switch valve is closed instantaneously, the valve core B17 blocks up the pressure relief channel 13 completely, the valve core A16 blocks up the water passage 12 completely, at this moment, no water flow enters the lower cavity 10, but the lower cavity 10 and the water outlet 5 are still in a communicated state, water can not pass through the groove wall and enter the water outlet 5, the water pressure of the lower cavity 10 is reduced, the water pressure of the upper cavity 9 is larger than that of the lower cavity 10, the pulse cover is pressed down, the lower cavity 10 is isolated from the water outlet, and the effect of closing the water flow is achieved.

The further effect is that when the flow is regulated, the driving mechanism regulates the opening degree of the water channel 12 through the valve core a16, and the pulse cover can automatically regulate the distance of moving up or down according to the pressure difference between the upper cavity 9 and the lower cavity 10, so that the torque applied to the rotating shaft 14 is very small, the energy consumption of the driving mechanism 15 is reduced, and the function of saving energy is achieved.

Specifically, in the flow switch valve with the above structure, the diameter of the pressure relief channel 13 is larger than that of the through hole 11, and the aperture of the through hole 11 is very small, so that when the pressure relief channel 13 is opened, the water inflow of the upper cavity 9 is greatly smaller than the water outflow, further the water pressure of the upper cavity 9 is smaller than that of the lower cavity 10, and the pulse cover moves upwards; at the moment when the pressure relief channel 13 is blocked, the lower cavity 10 and the water outlet 5 are still in a communicated state, and at the moment, the water flow of the lower cavity 10 can also overflow to the water outlet 5, but the water flow is difficult to flow back into the lower cavity 10 from the upper cavity 9 due to the small through hole 11, so that the water pressure of the upper cavity 9 is higher than that of the lower cavity 10, the pulse cover is pushed to move downwards, and the lower cavity 10 is isolated from the water outlet. Therefore, the flow switch valve body 1 is opened and closed by controlling the water pressure of the upper cavity 10 and the lower cavity 10, compared with the prior art, the flow switch valve body is easier to realize by controlling the opening and closing of a water outlet, and because the opening of the pressure relief channel 13 is much smaller than the water outlet, the torque borne by the rotating shaft 14 when the valve core A17 is blocked is small, the energy consumption is small, and the pulse cover can be realized only by the difference of the water pressure of the upper cavity and the water pressure of the lower cavity without applying any external force.

Specifically, as shown in fig. 3, 7, 8, and 9, in the flow switching valve with the above structure, a support ring 18 is further disposed in the annular groove 6, an inner diameter of the support ring 18 is the same as an inner diameter of the upper cavity 9, and the support ring 18 is further provided with a through hole 18.1, so that water flows through the annular groove 6; the pulse cover comprises a diaphragm cover 7 and a diaphragm 8, the diameter of the diaphragm cover 7 is smaller than that of the diaphragm 8, the diaphragm cover 7 is made of hard rubber or silica gel or other hard materials and has the function of supporting the diaphragm 8 and preventing the diaphragm from deforming when water pressure is applied to the upper part and the lower part of the diaphragm at different times, a conical column 7.1 with a circular concave hole is arranged in the center of the diaphragm cover 7, and an annular clamping groove 7.2 is formed in the conical column; the diaphragm 8 is made of elastic soft rubber, a circular hole 8.1 is formed in the center of the diaphragm 8, the diameter of the circular hole is matched with the inner diameter of the annular clamping groove 7.2, and when the diaphragm 8 is connected, the conical column 7.1 is sleeved with the diaphragm 8 and is clamped on the annular clamping groove 7.2 through the circular hole 8.1; the membrane 8 is also provided with a U-shaped soft connection part 8.2 close to the edge, when in installation, the edge of the U-shaped soft connection part 8.2 is clamped between the support ring 18 and the bottom edge of the upper cavity 9, so that the U-shaped soft connection part 8.2 is arched upwards or downwards to form a U-shaped interval with an opening. Diaphragm 8 is soft material to set up the soft portion that connects of U-shaped at its edge, can make the pulse lid reciprocate along with the change of upper and lower pressure, have fine cushioning effect, and 8 lids 7 of diaphragm of stereoplasm material to and the awl post on the diaphragm lid 7, can be used for fixed soft diaphragm 8, prevent that it from taking place deformation, thereby make the pulse lid have stronger anti deformability, prolong the life of pulse lid.

Specifically, as shown in fig. 6 and 10, in the flow switching valve with the above structure, the valve body 1 is provided with two symmetrical water passing channels 12 at the water inlet, the water passing channels 12 penetrate through the wall of the valve body 1 and are communicated with the lower cavity 10, two symmetrical fan-shaped columns 16.1 are arranged at the positions of the valve core a16 corresponding to the water passing channels 12, the arc surfaces of the fan-shaped columns corresponding to the water passing channels 12 are tangent to the water passing channels 12, and the area of the arc surfaces of the fan-shaped columns 16.1 corresponding to the water passing channels 12 is larger than the area of the water passing channels 12. When the valve works, the rotating shaft 14 drives the valve core A16 to rotate, and the fan-shaped column also rotates, so that the opening degree of the inlet of the water channel 12 is changed, and the flow of the flow switch valve is controlled.

Specifically, as shown in fig. 3, the driving mechanism 15 includes a stepping motor 15.1 and a coupling sleeve 15.2, an output end of the stepping motor is connected to one end of the coupling sleeve 15.2, and the other end of the coupling sleeve 15.2 is connected to the rotating shaft 14, and when the driving mechanism works, the rotating shaft 14 is driven by the stepping motor to rotate, so as to adjust the opening and closing of the flow switching valve and the flow rate. Further, be equipped with calibration block 15.3 on the axle sleeve 15.2, the position that valve body 1 corresponds calibration block 15.2 is equipped with detects opto-coupler 21, it is used for detecting the skew degree of calibration block 15.3 to detect the opto-coupler for step motor 15.1's calibration. During operation, detect opto-coupler 21 through the skew degree that detects calibration piece 15.3 to learn step motor 15.1's error, and then calibrate step motor 15.1, make step motor 15.1 all be in the zero degree when starting at every turn, improve the degree of accuracy that step motor 15.1 adjusted, and then improve flow control's precision.

In one embodiment, as shown in fig. 4 and 5, the pressure relief channel 13 is a pipe with a port extending into the upper cavity 9, the port has an upward opening, the valve core B17 is provided with a pressure lever 17.1, an end of the pressure lever 17.1 is provided with a glue column 17.2, the glue column 17.2 faces the opening of the pressure relief channel 13, and the area of a cylindrical surface of the glue column is larger than that of the outlet of the pressure relief channel 13. During operation, the rotating shaft 14 drives the valve core A17 to rotate, so that the pressure lever rotates up and down by taking the rotating shaft 14 as an axis, and the glue column 17.2 at the end head is blocked or separated from the inlet of the pressure relief channel 13 in the rotating process, thereby playing a role in opening and closing the inlet of the pressure relief channel 13 and further playing a role in controlling the opening and closing of the flow switch valve.

In another embodiment, as shown in fig. 5, a pressing block 17.3 is further disposed on the valve core a17, and a top end of the pressing block 17.3 abuts against a top surface of the diaphragm cover 7 to limit and press down the diaphragm cover 7. When the flow switch valve is opened, the pressing block 17.3 deviates from the center and rotates to one side, at the moment, the diaphragm cover 7 moves upwards under the action of the water pressure of the lower cavity 10 until the diaphragm cover abuts against the pressing block 17.3, and at the moment, the pressing block 17.3 plays a limiting role; when the flow switch valve is closed, the pressure block 17.3 rotates downwards by taking the rotating shaft 14 as a center, so that the pulse cover is pushed to move downwards to play a role in accelerating the closing of the valve. Preferably, the top surface of the membrane cover 7 is provided with one or more convex strips 7.3, the convex strips 7.3 are abutted with the pressing block 17.3, and the extending direction of the convex strips is perpendicular to the rotating shaft 14. The convex strip 7.3 is arranged on the top surface of the diaphragm cover 7, so that the pressing block presses down the pulse cover by propping against the convex strip, and the contact friction between the pressing block and the pulse cover is avoided.

In one embodiment, as shown in fig. 5, a fixing block 19 is disposed on a sidewall of the upper cavity 9, a dredging rod 20 penetrating through the through hole 11 is disposed on the fixing block 19, and a diameter of the dredging rod 20 is smaller than a diameter of the through hole 11. The dredging rod 20 is used for dredging the through hole 11, the through hole 11 is small in aperture and easy to block, the dredging rod 20 penetrates through the through hole 11 and is fixedly connected to the fixing block 19, when the pulse cover moves up and down, the phenomenon that the dredging rod moves up and down relative to the through hole 11 can occur, and therefore the effect of dredging the through hole 11 is achieved.

It should be noted that, above-mentioned flow switch valve can regard as solitary electronic flow switch valve to use, also can regard as the supporting part of thermostatic valve, water heater, shower bath etc. when using as independent valve, flow switch valve still is equipped with control mechanism, step motor and detection opto-coupler all with control mechanism electric connection, when being thermostatic valve, water heater, shower bath's part, step motor and detection opto-coupler and the control mechanism electric connection who corresponds the device.

In conclusion, the flow switch valve provided by the invention controls the opening and closing of the valve and adjusts the flow through the pulse mode, has the characteristics of low energy consumption, stable flow control, low valve core abrasion and long service life, and can be widely popularized and used as an electric switch valve.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. A flow switch valve, comprising a valve body having a water inlet and a water outlet, characterized in that, an upper cavity and a lower cavity are arranged in the valve body, a pulse cover capable of moving up and down is arranged between the upper cavity and the lower cavity, the pulse cover is provided with a through hole for communicating the upper cavity and the lower cavity, the valve body is also provided with a pressure relief channel for communicating the upper cavity and the water outlet, and a water passing channel for communicating the water inlet and the lower cavity, the flow switch valve also comprises a rotating shaft, a driving mechanism, a valve core A and a valve core B, the rotating shaft is rotatably fixed on the valve body, one end of the rotating shaft is in transmission connection with the driving mechanism, the other end of the rotating shaft extends into the water inlet and is connected with the valve core A, the valve core A is used for adjusting the opening of the water passing channel port, and the valve core B is fixedly connected to the position of the rotating shaft corresponding to the pressure relief channel port and used for controlling the opening and closing of the pressure relief channel port.

2. A flow switching valve according to claim 1, wherein the diameter of the pressure relief passage opening is larger than the diameter of the through hole.

3. The flow switch valve according to claim 1, wherein the lower chamber is further provided with a support ring, the inner diameter of the support ring is the same as the inner diameter of the upper chamber, the pulse cover comprises a diaphragm cover and a diaphragm, the diaphragm cover and the diaphragm are detachably connected, the edge of the diaphragm is further provided with a U-shaped soft connection portion, and the edge of the U-shaped soft connection portion is clamped between the support ring and the bottom edge of the upper chamber.

4. A flow switching valve as claimed in claim 3 wherein the diaphragm cover is made of a hard material and the diaphragm is made of a soft material.

5. The flow switch valve according to claim 1, wherein a port of the pressure release passage extends into the upper cavity, the port opens upward, the spool B is provided with a pressure lever, an end of the pressure lever is provided with a rubber column, the rubber column faces the pressure release passage port, and the area of a cylindrical surface of the rubber column is larger than that of the pressure release passage port.

6. The flow switch valve according to claim 1, wherein a sector-shaped pressing block is further provided on the valve core B, and the pressing block abuts against the top end of the pulse cover.

7. The flow switch valve according to claim 1, wherein the valve body is provided with two symmetrical water passing channels at the water inlet, the valve core a is provided with two symmetrical fan-shaped columns, and the area of the arc surface of the fan-shaped column is larger than that of the water passing channel.

8. The flow switching valve of claim 1, wherein the upper chamber has a fixed block on a sidewall thereof, and the solid block has a pull rod passing through the through hole, the pull rod having a diameter smaller than that of the through hole.

9. A flow switching valve as claimed in claim 1 wherein the drive mechanism comprises a stepper motor and a coupling sleeve, one end of the coupling sleeve being connected to the output of the stepper motor and the other end being connected to the shaft,

10. a flow switch valve as claimed in claim 1, wherein the coupling sleeve is provided with a calibration block, and a detection optocoupler is provided at a position of the valve body 1 corresponding to the calibration block, the detection optocoupler being used for calibration of the stepping motor.