CN106678373B

CN106678373B - Water quantity server

Info

Publication number: CN106678373B
Application number: CN201611018555.4A
Authority: CN
Inventors: 梁稳; 金晶; 杨开明; 周高云; 茅忠群; 诸永定
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2016-11-18
Filing date: 2016-11-18
Publication date: 2022-10-21
Anticipated expiration: 2036-11-18
Also published as: CN106678373A

Abstract

The invention relates to a water quantity server, which comprises a valve body and a valve core positioned in the valve body, wherein the valve body is provided with a water inlet positioned on the side wall and a water outlet positioned at the lower part; the servo motor is in driving connection with the valve core; the valve is characterized in that the lower part of the valve body is provided with a ring wall surrounding the water outlet to form a sleeve sleeved outside the valve rod, and the sleeve divides an inner cavity of the valve body into an outer ring cavity communicated with the water inlet and an inner ring cavity communicated with the water outlet; the upper end of the sleeve is opened in the inner cavity of the valve body; and a sealing piece for closing the water outlet is arranged at the lower part of the valve core. Compared with the prior art, the water quantity servo provided by the invention avoids the direct impact of water flow on the valve core, solves the problem of shaking of the adjusting valve core caused by water flow impact, and can keep the opening of the water outlet constant even under the condition of large pressure fluctuation, thereby keeping the water yield constant.

Description

Water volume server

Technical Field

The invention relates to a water quantity server.

Background

The water quantity servo is usually applied to a water heater, and can automatically adjust the water inlet flow according to the set temperature of hot water, the change of water pressure, air pressure and water inlet temperature, so that the water outlet flow is automatically adjusted and constant, the double adjustment of water and air is really realized, and the accuracy and the constancy of the water outlet temperature are ensured; the problem of quenching and shock heating during water outlet in the process is solved; the temperature of the outlet water can be freely adjusted from low temperature to high temperature in a wide range all the year round.

CN200820167152.0 discloses a water quantity servo device for an electric water heater, which comprises a valve body and a valve core, wherein the valve body is provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe or the water outlet pipe is provided with a water outlet flow meter and a matched water outlet flow sensor; the hot water outlet pipe of the electric water heater is provided with a water outlet temperature sensor, one end of the valve core is in transmission connection with the stepping motor, so that the valve core can be penetrated in the valve body in a reciprocating way along the axial direction of the inner cavity of the valve body, the outer surface of the valve core is provided with a conical surface or a conical groove, an inner shoulder is arranged in the valve body, and a gap between the outer surface of the valve core and the inner shoulder of the valve body is a water flow channel. The utility model discloses a can guarantee that leaving water temperature reaches the temperature of settlement, under the condition that water pressure changes, the fluctuation range of the automatic adjustment aperture size that reduces leaving water temperature.

However, the water flow directly impacts the valve core, when the water pressure fluctuation is large, the valve core is easy to shake, the opening of the throttling port is changed, finally the water flow is changed, and the flow stability is influenced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a water quantity server with long service life and good working stability under the condition of large pressure fluctuation in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the water quantity server comprises a valve body and a valve core positioned in the valve body, wherein the valve body is provided with a water inlet positioned on the side wall and a water outlet positioned at the lower part; the servo motor is connected with the valve core in a driving way;

the method is characterized in that:

the lower part of the valve body is provided with a sleeve which surrounds the annular wall of the water outlet to form a sleeve sleeved outside the valve rod, and the sleeve divides the inner cavity of the valve body into an outer annular cavity communicated with the water inlet and an inner annular cavity communicated with the water outlet; the upper end of the sleeve is opened in the inner cavity of the valve body;

and a sealing piece for closing the water outlet is arranged at the lower part of the valve core.

Preferably, an annular flange may be provided on the inner wall of the valve body, and the sealing member is fitted with the flange to close the water outlet.

The sealing element can comprise an inner ring base, an outer ring clamping seat and a sealing ring; the outer ring clamping seat and the sealing ring are sleeved outside the inner ring base, and the sealing ring is positioned between the inner ring base and the outer ring clamping seat;

the inner ring base is sleeved on the valve core;

and the water outlet is closed by the abutting of the sealing ring on the flange. The structure avoids the direct connection of the sealing ring with the valve core, thereby avoiding the rotary extrusion force generated by the rotation of the valve core on the sealing ring and ensuring the service life of the sealing ring.

Preferably, the cross section of the inner ring base is in a shape of a Chinese character 'tu' with a middle through hole; correspondingly, the cross section of the sealing ring is in an inverted concave shape with a through hole in the middle.

To further avoid the rotational pressing force of the inner ring base against the seal ring, a gap may be provided between the side surface of the side protrusion of the inner ring base and the seal ring. Thus, when torsional extrusion force from the valve core acts on the sealing element, only extrusion force is available, and no torsional force is available, so that the service life of the sealing ring is further prolonged.

Preferably, the cross section of the outer ring clamping seat is in an inverted concave shape with a through hole in the middle. The structure enables the positioning of the sealing ring to be more stable.

In order to prevent the flange and the valve body from being damaged due to the excessive rotation of the servo motor, a limiting flange can be arranged on the valve core, and a gasket is sleeved on the valve core and attached to the sealing element;

an elastic part is arranged between the limiting flange and the gasket. The rotating force of the valve core acts on the gasket through the elastic piece to generate a slipping phenomenon, so that the rotating force is prevented from being transmitted to the sealing ring, and the service life of the sealing ring is further prolonged; meanwhile, the problem that the valve body is burst due to excessive downward movement of the valve core when the valve is shut down is avoided by utilizing the buffering effect of the spring.

In order to further stabilize the positioning of the sealing element, a clamping groove can be arranged on the valve core, and a clamping block used for limiting the sealing element is embedded in the clamping groove.

The gasket is preferably a metal gasket or a ceramic gasket.

Compared with the prior art, the water quantity servo provided by the invention avoids the direct impact of water flow on the valve core, solves the problem of shaking of the adjusting valve core caused by water flow impact, and can keep the opening of the water outlet constant even under the condition of large pressure fluctuation, thereby keeping the water yield constant.

Drawings

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of the present invention with a portion of the valve body removed;

fig. 3 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

The invention is described in further detail below with reference to the following examples of the drawings.

As shown in fig. 1 to 3, the water volume server includes:

the valve body 1 is a shell of the whole water switch, a water inlet 11 and a water outlet 12 are arranged on the shell, the water inlet 11 is arranged on the side wall of the valve body, and the water outlet 12 is a lower port of the valve body. The inner wall of the valve body 1 is provided with an annular flange 13 which is used for closing the water outlet 12 by matching with the sealing element 5.

The sleeve 4 is sleeved outside the valve core 2 and inside the valve body 1, is arranged around the annular wall of the water inlet 11, is connected to the flange 13 at the lower end edge in a sealing way, and is provided with an opening at the upper end in the inner cavity of the valve body and higher than the water inlet 11; a gap is provided between the sleeve 4 and the inner wall of the valve body 1, dividing the inner cavity of the valve body into an outer ring cavity 43 and an inner ring cavity 42. The upper and lower ends of the shielding part 41 corresponding to the water inlet 11 on the sleeve 4 are protruded out of the peripheral wall of the water inlet 11; that is, the shielding portion 41 blocks the whole water inlet 11, and water flow enters from the water inlet and then only enters the outer ring cavity 43 under the action of the sleeve 4, and then overflows from the upper port of the sleeve 4 into the inner ring cavity 42. The valve core is prevented from being directly impacted by water flow, so that the valve core is prevented from shaking, and the water yield can be effectively kept constant even under the condition of large pressure fluctuation. The valve core 2 is arranged in the valve body 1, is connected with the servo motor 3, drives the valve core 2 to rotate through the rotation of the servo motor, and drives the sealing element 5 on the valve core to move up and down, so that the water outlet 12 is opened or closed; the peripheral wall of the valve core 2 is provided with a limiting flange 21 and a clamping groove 22 at intervals, and a clamping block 23 is embedded in the clamping groove 22.

The sealing element 5 is sleeved on the valve core 2 and is used for closing the water outlet 12 by matching with the flange 13; comprises an inner ring base 51, an outer ring clamping seat 52 and a sealing ring 53; wherein, the inner ring base 51 is sleeved on the valve core 2, and the cross section of the inner ring base 51 is in a shape of a Chinese character 'tu' with a middle through hole; the cross sections of the sealing ring 53 and the outer ring clamping seat 52 are in an inverted concave shape with a through hole in the middle; the sealing ring 53 and the outer ring clamping seat 52 are sleeved on the inner ring base 51 from inside to outside in sequence, and a gap 54 is formed between the side surface of the side protrusion 51a of the inner ring base 51 and the sealing ring 53. The sealing ring 53 abuts on the flange 13 to close the water outlet 12.

The lower surface of the inner ring base 51 abuts against the latch 23, and the upper surfaces of the inner ring base 51 and the outer ring latch 52 abut against the spacer 6.

The gasket 6 is sleeved on the valve core 2 and is made of ceramic materials. The gasket may also be made of a metal material, such as stainless steel, or other material with suitable friction.

The elastic element 7, which is a spring in this embodiment, is sleeved on the valve core 2, and two ends of the elastic element respectively abut against the gasket 6 and the limiting flange 21, so as to buffer the extrusion force of the valve core to the flange 13 during transition screwing.

The gasket 6 is used for reducing the friction between the valve core and the sealing part 5 when the valve core rotates in cooperation with the elastic part 7, so that the rotary extrusion force of the valve core on the sealing ring 53 when the valve core rotates is avoided, the sealing ring only bears the pressure, and the service life of the sealing ring is ensured.

When the water outlet valve works, the servo motor drives the valve plug to rotate forwards, the sealing element leaves the flange, and the water outlet is opened; water flow enters the outer ring cavity through the water inlet, then overflows from the upper end edge of the sleeve into the inner ring cavity, and flows out of the water outlet through a gap between the sealing element and the flange; the water yield is adjusted by the servo motor according to the control signal.

When the water outlet is stopped, the servo motor drives the valve core to rotate reversely, the extrusion sealing ring is abutted to the flange, and the water outlet is closed.

Claims

1. A water quantity server comprises a valve body (1) and a valve core (2) positioned in the valve body, wherein a water inlet (11) positioned on the side wall and a water outlet (12) positioned at the lower part are formed in the valve body (1); the servo motor (3) is connected with the valve core (2) in a driving way;

the method is characterized in that:

the lower part of the valve body (1) is provided with a sleeve (4) which surrounds the annular wall of the water outlet (12) to form a sleeve outside the valve core (2), and the sleeve (4) divides the inner cavity of the valve body (1) into an outer annular cavity (43) communicated with the water inlet (11) and an inner annular cavity (42) communicated with the water outlet (12); the upper end of the sleeve (4) is opened in the inner cavity of the valve body (1) and is higher than the water inlet (11);

the lower part of the valve core (2) is provided with a sealing element (5) for closing the water outlet (12);

a limiting flange (21) is arranged on the valve core (2), and a gasket (6) is sleeved on the valve core (2) and attached to the sealing element (5);

an elastic part (7) is arranged between the limiting flange (21) and the gasket (6).

2. A water quantity server according to claim 1, characterized in that an annular flange (13) is provided on the inner wall of the valve body (1), the sealing member (5) cooperating with the annular flange (13) to close the water outlet (12).

3. A water volume server according to claim 2, characterised in that the seal (5) comprises an inner ring seat (51), an outer ring seat (52) and a sealing ring (53); the outer ring clamping seat (52) and the sealing ring (53) are sleeved outside the inner ring base (51), and the sealing ring (53) is positioned between the inner ring base (51) and the outer ring clamping seat (52);

the inner ring base (51) is sleeved on the valve core (2);

the water outlet (12) is closed by the sealing ring (53) abutting against the annular flange (13).

4. A water volume server according to claim 3, characterised in that said inner ring base (51) has a cross-section in the shape of a "convex" with a central through hole; correspondingly, the cross section of the sealing ring (53) is in an inverted concave shape with a through hole in the middle.

5. A water quantity server according to claim 4, characterized in that a gap (54) is provided between the side surface of the side protrusion of the inner ring base (51) and the sealing ring (53).

6. Water volume server according to claim 5, characterised in that the cross-section of the outer ring cartridge (53) is of inverted "concave" shape with a through hole in the middle.

7. Water volume server according to any one of claims 1 to 6, characterised in that a clamping groove (22) is provided on the valve element (2), and a clamping block (23) for limiting the sealing element (5) is embedded in the clamping groove (22).

8. Water volume server according to claim 7, characterised in that said gasket (6) is a metal gasket or a ceramic gasket.