CN201254751Y - Constant-flow and constant-pressure valve - Google Patents

Abstract

The utility model provides a constant current constant pressure valve, including a set of valve body unit, a set of axis unit, a set of contrary unit and a set of constant current constant voltage unit of ending, the valve body unit has a valve body, this valve body is inside to have a first hydroecium and a second hydroecium, the axis unit sets up in first hydroecium, its concave third hydroecium that is equipped with of upper end department, constant current constant voltage unit has a central valve rod that floats the setting in the third hydroecium, can supply the inflow of adjusting the second hydroecium, borrow this and let rivers reach the effect of constant current input, central valve rod both ends receive elastic element and water pressure respectively and reach the balance, borrow this and let rivers can reach the effect that the constant voltage goes out water.

Description

Constant flow constant pressure valve

technical field

The utility model relates to a control valve, in particular to a constant-current and constant-pressure valve with the effects of constant-current input and constant-pressure water outlet.

Background technique

Referring to Fig. 1, a known non-treatment type toilet device 10 mainly includes a seat cushion 11, a group of control switches 12 arranged at the side of the seat cushion 11, a fixed seat 13 arranged at the rear of the seat cushion 11, a The toilet lid 14 that is arranged on the fixed seat 13 and can be flipped open, and a group of water spray pipes 15 that are arranged on the fixed seat 13 and hidden under the seat cushion 11, the water spray pipe 15 is activated by the control switch 12 and can be moved forward. The stretching movement is exposed, so as to achieve the function of washing the human body.

Referring to Fig. 2, the interior of the fixed seat 13 is hollow, and a water pipeline and an electric control circuit associated with the water spray pipe 15 are installed at a predetermined position, wherein the water pipeline includes a solenoid valve 16 and a check valve. Valve 17, one end of the solenoid valve 16 is connected with the external water pipe, and the water provided with a fixed flow can enter the solenoid valve 16, and the other end of the solenoid valve 16 is connected with the check valve 17 in a pipe connection mode, and the electric control circuit includes a set of Electric control mechanism 18, this electric control mechanism 18 is connected with control switch 12, can control the switching state of electromagnetic valve 16, thereby controls whether water flow can enter in the check valve 17, and one end of this check valve 17 is provided with a drain The other end of the pipe 171 is connected to the water spray pipe 15 by means of a pipe connection. The inside of the check valve 17 can be controlled to maintain a certain water pressure. When the water pressure exceeds a preset value, part of the water flow will be released and discharged from the drain pipe 171. In this way, the check valve 18 can provide water with a stable pressure to enter the water spray pipe 15 , and then spray out the cleaning water column through the water spray pipe 15 .

Although the above-mentioned toilet device 10 allows the spray pipe 15 to have the function of spraying a constant-pressure water column, there are still shortcomings in use that need to be improved. The known toilet device uses a solenoid valve 16 and a check valve 17 to form a water pipeline. , due to the separate setting of the solenoid valve 16 and the check valve 17, the volume of the two valve parts occupies a relatively large internal space, and the equipment cost of purchasing the two valve parts is high, which is not conducive to product competitiveness, and once a failure occurs , The solenoid valve 16 and the check valve 17 need to be checked separately one by one, which is inconvenient for maintenance.

Utility model content

The purpose of the utility model is to provide a constant current and constant pressure valve with the function of constant current and constant pressure.

The utility model provides a constant current and constant pressure valve, which includes a group of valve body units, a group of central axis units, a group of non-reverse units and a group of constant current and constant pressure units, wherein: the valve body unit has a valve body, The lower end of the valve body is provided with a water inlet, the inside of the valve body is provided with a first water chamber communicated with the water inlet, and the valve body is provided with a first water chamber communicated with the first water chamber at the top of the interior. Two water chambers, the valve body is provided with a water outlet connected to the second water chamber at the side; the central axis unit is fixedly arranged in the first water chamber of the valve body, and its upper end extends into the second water chamber, And the end face is recessed with a third water chamber with a predetermined depth; the non-return unit has a stopper rod sleeved at the lower end of the central axis unit, and a stopper rod with a predetermined elastic force that can bounce down against the stopper rod. The spring, the stopper rod can be closed to the water inlet by being bounced by the spring; the constant current and constant pressure unit has an annular liner arranged in the second water chamber, an annular gasket arranged above the second water chamber and connected to the ring The liner provides an elastic element with a predetermined elastic force, and a central valve stem that is connected to the center of the annular liner and can move up and down. The lower end of the center valve stem is extended with a third In the water inlet end of the water chamber, an inclined cone surface is arranged on the outer periphery above the water inlet end, and the inclined cone surface is interposed between the first water chamber and the second water chamber, so that a water inlet channel is formed there. The outer periphery of the central valve stem is pierced with a flow channel towards the inside, one end of the flow channel communicates with the second water chamber, and the other end extends downward to reach the bottom of the water inlet end, so that the water flow in the second water chamber can enter through the flow channel. The third water chamber achieves constant pressure, and the water flow in the third water chamber can drive the central valve rod to float up and down, thereby changing the diameter of the water inlet channel to control the water flow.

In the constant current and constant pressure valve described in the utility model, the bottom of the water inlet end of the central valve rod is radially recessed with a notch groove communicating with the flow channel.

In the constant current and constant pressure valve described in the utility model, two washers are sandwiched up and down in the center of the annular liner, and the upper end of the central valve stem is embedded and fixed on the two washers.

The beneficial effect of the utility model lies in that: the central valve stem is floatingly arranged in the third water chamber to change the water inflow to achieve constant flow effect, and the pressure balance design at both ends of the central valve stem is used to achieve the effect of constant pressure water outlet.

Description of drawings

Fig. 1 is a perspective schematic view of a known treatment-free toilet device;

Fig. 2 is an exploded view of a known treatment-free toilet device;

Fig. 3 is a combination diagram of a preferred embodiment of the utility model constant current and constant pressure valve, illustrating that the utility model is installed inside a fixed seat;

Fig. 4 is an exploded view of the above-mentioned preferred embodiment, illustrating that the utility model has a set of valve body units, a set of central axis units, a set of non-return units and a set of constant current and constant pressure units;

Fig. 5 is the three-dimensional assembly diagram of above-mentioned preferred embodiment;

Fig. 6 is the combined sectional view of above-mentioned preferred embodiment;

Fig. 7 is a perspective view of the above-mentioned preferred embodiment, illustrating that the constant current and constant pressure unit includes a central valve stem;

Fig. 8 is an action diagram of the above-mentioned preferred embodiment, illustrating the situation that the pressure at both ends of the central valve rod is kept balanced to achieve constant pressure water outlet;

Fig. 9 is an action diagram of the above-mentioned preferred embodiment, illustrating the situation that the central valve stem can float up and down to change the water intake to achieve constant flow input.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Referring to Fig. 3, in a preferred embodiment, the constant current and constant pressure valve of the present utility model is mainly used on the water pipeline of a non-treatment type toilet device, which has a fixed seat similarly to the known toilet device 1. A container chamber 101 is recessed inside the fixed seat 1, and a group of water spray pipes 2 are installed in the center of the container chamber 101, and a battery pack 3 and a group of electric controllers are respectively installed on the left and right sides of the water spray pipe 2. Unit 4, as shown in Fig. 4, Fig. 5 and Fig. 6 at the same time, the constant current and constant pressure valve of the present utility model is installed on one side of the chamber 101, and mainly includes a group of valve body units 20 and a group of central axis units 30 , a set of non-return units 40 and a set of constant-current and constant-voltage units 50, and then, the composition, structure and combination space of the above-mentioned units will be described in detail later.

The valve body unit 20 has a valve body 21 and a solenoid valve 22. The valve body 21 is assembled from a plurality of valve parts. A water inlet 211 is arranged at the lower end of the valve body 21. The inside of the valve body 21 is hollow. There is a first water chamber 212 connected to the water inlet 211 below. The water inlet 211 is connected to an external water pipe (not shown) to provide a fixed amount of water flow into the first water chamber 212. The valve body 21 There is a second water chamber 213 connected to the first water chamber 212 at the upper part of the interior, and a water outlet 214 connected to the second water chamber 213 is provided on the side of the valve body 21, and the water flows through the first water chamber 212 It can enter the second water chamber 213, and then reach the water outlet 214 from the second water chamber 213 to perform the water outlet action. The water ports 214 are connected, and the other side of the solenoid valve 22 is connected to the water spray pipe 2. By controlling the switch of the solenoid valve 22, the water flow can be delivered to the water spray pipe 2 for spraying.

The central axis unit 30 is a valve part in the shape of a straight tube, with two fixed lugs 31 protruding from its two sides, which are locked and fixed on the valve body 21 through the two fixed lugs 31, so that the entire central axis unit 30 is just right. Located in the first water chamber 212, a cylindrical tube 32 extending into the second water chamber 213 is provided at the upper end of the central axis unit 30, and a third water chamber 33 with a predetermined depth is recessed on the end surface of the cylindrical tube 32. The central axis A sleeve hole 34 is recessed at the lower end of the unit 30 .

The non-return unit 40 has a stopper rod 41 sleeved in the sleeve hole 34 at the lower end of the central axis unit 30 and a spring 42 sleeved on the stopper rod 41 , and a taper head 411 is provided at the lower end of the stopper rod 41 A sealing ring 412 is set on the cone head 411, and the stopper rod 41 is pushed downward by the spring 42, so that the cone head 411 can be kept closed to the water inlet 211, thereby preventing the water flow from backflowing, when the water inlet 211 When the hydraulic pressure is greater than the elastic force of the spring 42, the stopper rod 41 can only be pushed away to allow the water flow to enter the first water chamber 212.

The constant current and constant pressure unit 50 has an annular liner 51 disposed in the second water chamber 213, an elastic element 52 disposed above the second water chamber 213 to provide a predetermined resilience to the annular liner 51, and A central valve stem 53 that is connected to the center of the annular liner 51 and can move up and down. The annular liner 51 has two metal washers 511, 512 and a plastic diaphragm 513. The two washers 511, 512 are sandwiched between the top and bottom At the center of the plastic diaphragm 513, the outer peripheral edge of the plastic diaphragm 513 is clamped and fixed on the inner peripheral wall of the second water chamber 213 in a sealed manner, so that the water flow will not penetrate to the position of the elastic element 52, and one end of the elastic element 52 is sleeved against the valve. At the upper end of the body 21, the other end abuts against the washer 511 to provide the entire annular gasket 51 with a downward elastic force, and the upper end of the central valve stem 53 is fixed on the upper and lower two washer 511, 512 in an embedding manner, whereby the central valve The rod 53 and the annular liner 51 can reach an integrated linkage, so that the central valve rod 53 has the ability to move up and down. Water end 531, the outer periphery of the water inlet end 531 is provided with a sealing ring 532 that contacts the inner peripheral wall of the third water chamber 33, thereby enabling the third water chamber 33 and the second water chamber 213 to be isolated from each other and further An inclined cone surface 533 is provided on the outer peripheral surface above the water end 531. The inclined cone surface 533 is interposed between the first water chamber 212 and the second water chamber 213. The inclined cone surface 533 and the inner wall of the valve body 21 jointly form a The inclined water inlet I, because the central valve rod 53 can freely float and move in the third water chamber 33, makes the inclined cone surface 533 close to or away from the inner wall of the valve body 21, so that the diameter of the water inlet I can be changed. , the central valve stem 53 is pierced with a flow channel 534 from both sides of the inclined cone surface 533 to the center. To the bottom of the water inlet 531, the bottom of the water inlet 531 is radially recessed with a notch groove 535, so that when the water flow reaches the water inlet 531, it can overflow into the third water chamber 33 from both sides of the notch groove 535, so that the water flow can be stored. The third water chamber 33 and the second water chamber 213 reach the same pressure when full.

The above is an overview of the various structures and shapes of the constant current and constant pressure valve of the present invention, and then, the actions of the present invention and the expected effects are stated as follows:

Referring to Fig. 8, under normal conditions, the water flow enters the valve body 21 from the water inlet 211, the normal water pressure will be greater than the spring force of the spring 42, and the water flow will push away the stopper rod 41 of the non-return unit 40 and enter the first water chamber 212 Inside, the first water chamber 212 enters the second water chamber 213 through the water inlet 1, and then the water is discharged from the water outlet 214. At this time, the water flow in the second water chamber 213 will push the annular liner 51 upwards, and the other On the one hand, the annular liner 51 is pushed down by the elastic element 52, and the water pressure of the second water chamber 213 and the elastic element 52 will form the same pressure to maintain balance, thereby achieving the effect of constant pressure water outlet.

Referring to Fig. 9, the water flow in the second water chamber 213 can enter the third water chamber 33 from the flow channel 534 of the central valve rod 53. The water flow will push the central valve stem 53 to move upward. Since the water inlet 1 is composed of the inner wall of the valve body 21 and the inclined cone surface 533 of the central valve stem 53, the more the central valve stem 53 moves upward, the closer the inclined cone surface 533 will be to the valve. The inner wall of the main body 21 reduces the caliber of the water inlet 1, thereby reducing the flow of water in the second water chamber 213. On the contrary, when the elastic force of the elastic element 52 is greater than the water pressure, the central valve stem 53 will move downward and expand. The caliber of the water inlet 1 is used to increase the water flow of the second water chamber 213. Through this adjustment action, the water flow entering the second water chamber 213 can be kept constant to achieve the effect of constant flow input.

To sum up, the constant current and constant pressure valve of the utility model is mainly to solve the problem of the flow pipeline of the known toilet device. The technical means adopted in the utility model is to use a group of constant current and constant pressure units 50. The unit 50 has a central valve stem 53 floatingly arranged in the third water chamber 33, so that the two ends of the central valve stem 53 are kept in balance under the two pressures of the elastic element 52 and the water pressure, so that the water flow can perform the water outlet action in a constant pressure manner In addition, the outer periphery of the center valve rod 53 is provided with an inclined cone surface 533 forming the water inlet 1, so that when the center valve rod 53 moves up and down, the flow of water entering the second water chamber 213 can be controlled, thereby allowing the water entering The water flow in the second water chamber 213 achieves the effect of constant current input, so the utility model can achieve the two functions of constant current and constant pressure at the same time by using a single valve body, and complete the control actions of all flow pipelines, and its volume will not occupy too much The internal space can effectively save the cost of equipment purchase, and it is also quite convenient for maintenance.

Claims (3)

1. constant current constant voltage valve, include one group of valve body unit, axle unit and one group of non-return unit in one group, this valve body unit has a valve body, the lower end of this valve body is provided with a water inlet, the inside of this valve body is provided with first hydroecium that communicates with this water inlet, this valve body is provided with second hydroecium that communicates with this first hydroecium at the inner and upper place, this valve body is provided with a delivery port that communicates with this second hydroecium in side edge, should be fixedly installed in first hydroecium of this valve body by middle axle unit, this non-return unit has a detent plug bar and butted this detent plug bar and this water inlet is made the spring of closed, it is characterized in that

Axle unit in being somebody's turn to do, its upper end extends in this second hydroecium and the end is concaved with the 3rd hydroecium with desired depth; And

One group of constant current constant voltage unit, has a ring liner that is arranged in this second hydroecium, a flexible member that is arranged on the place, top of this second hydroecium and this ring liner is provided a predetermined spring-go power, and an interlock connects the center valve rod of centre to move up and down that is located at this ring liner, the lower end extension of this center valve rod is provided with a water inlet end that is inserted in the 3rd hydroecium, this place, water inlet end top periphery is provided with a scalene cone, this scalene cone is between this first hydroecium and this second hydroecium centre and be formed with an inlet channel, the periphery of this center valve rod is equipped with a runner towards inside, this runner one end communicates with this second hydroecium, and the other end extends downwardly into and reaches this water inlet end bottom.

2. constant current constant voltage valve according to claim 1 is characterized in that, the bottom of the water inlet end of this center valve rod radially is concaved with a groove of the notch that communicates with this runner.

3. constant current constant voltage valve according to claim 1 is characterized in that, the centre of this ring liner is folded with two packing rings up and down, and the upper end interlocking of this center valve rod is fixed on two packing rings.

Images