CN111486252A - an overflow valve - Google Patents

Abstract

The invention discloses an overflow valve which comprises a shell and a swinging lever assembly, wherein a water guide cavity is formed in the shell, a water inlet pipe and a water outlet pipe are respectively arranged at the top and the bottom of the shell, and the bottom of the water inlet pipe extends into the water guide cavity. The side of the water inlet pipe is fixedly provided with a supporting piece. The swinging lever assembly comprises a lever guide post, a water seal structure and a load, wherein the lever guide post is hinged with the lower part of the supporting piece, the water seal structure is fixedly arranged at one end of the lever guide post, and the load is fixedly arranged at the other end of the lever guide post. The water seal structure comprises a partition plate and an annular water baffle plate, a water storage area is formed by enclosing the annular water baffle plate and the partition plate, and the bottom of the water inlet pipe extends into the water storage area. Under normal conditions, the swinging lever assembly is in a closed state under the balance action of a load, water in the water storage area plays a role in isolating air, when the drain valve drains water, external air cannot enter the drain port from the water inlet pipe, and the water drainage speed is greatly improved due to a siphon effect; when the pressure applied to the water seal structure is larger than the acting force of the load, the lever guide post rotates and opens the water inlet pipe to realize overflow.

Description

an overflow valve

technical field

The invention relates to the field of sanitary ware, in particular to an overflow valve.

Background technique

The existing drain valve is composed of a valve body, a base and an overflow pipe. Wherein, the valve base is communicated with the overflow pipe. In the normal water-stop state, the outside air is communicated with the drain port of the drain valve base through the overflow pipe. When the overflow phenomenon occurs, the water flows from the overflow pipe to the drain outlet of the drain valve base and enters the toilet pipe. When the drain valve is opened, water flows out through the drain outlet at the base of the drain valve. In normal use, since the drain at the base of the drain valve communicates with the outside air through the overflow pipe channel, negative pressure will be generated in the drain channel during draining, and the outside Under the action of atmospheric pressure, the air will be mixed into the drain port of the drain valve base together, so that the drain channel is not full of water, thus reducing the drain speed.

SUMMARY OF THE INVENTION

In view of the above problems, the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an overflow valve that can isolate the outside air and has a good overflow effect.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

An overflow valve includes a casing, a water guiding cavity is opened inside the casing, a water inlet pipe and a drainage pipe communicated with the water guiding cavity are respectively arranged at the top and bottom of the casing, and the bottom of the water inlet pipe extends into the water guide cavity. It also includes a rocking lever assembly, and a support member is fixed on the side of the water inlet pipe on the top of the water guiding chamber. The rocking lever assembly includes a lever guide column whose middle part is hinged with the lower part of the support member, a water seal structure fixed on one end of the lever guide column close to the water inlet pipe, and a water seal structure fixed on the other end of the lever guide column and used for connecting with the lever guide column. The water seal structure forms a lever balanced load. The water seal structure includes a partition plate fixed on the lever guide post and an annular water baffle fixed on the top of the partition plate. The annular water baffle plate and the partition plate are enclosed to form a water storage area. into the water storage area.

Preferably, in order to further improve the effect of isolating air, the bottom surface of the water inlet pipe is in sealing contact with the upper surface of the partition plate.

In one embodiment, the load is a counterweight block, and the counterweight block is fixed on one end of the lever guide post away from the water seal structure through a screw connection or a snap connection.

In another embodiment, the load is a spring, one end of the spring is fixed, and the other end is connected to the bottom of the lever guide post and is in a stretched state.

Preferably, a connecting rod is fixed on the side of the support member on the top wall of the water guide cavity, and a horizontal plate is fixed on the lower part of the connecting rod at a position lower than the hinged fulcrum of the lever guide column, and the spring The lower end is fixed on the horizontal plate.

Further, the two sides of the lever guide post extend outward to form two positioning rods respectively, the support member includes two support plates arranged in parallel and spaced apart from each other, the support plates are provided with positioning holes, and the The two positioning rods are respectively hinged with the positioning holes on the two connecting plates.

Preferably, in order to prevent the opening angle of the lever guide post from being too large, the bottom of the connecting plate extends downward to form a limiting boss for interference fit with the baffle and limiting the rotation angle of the baffle.

Further, in order to facilitate disassembly and assembly, the casing includes an overflow upper cover and an overflow base that are plugged into each other, the water inlet pipe is fixed on the overflow upper cover, and the drain pipe is fixed on the overflow cover. on the overflow base.

Preferably, an overflow cap is installed on the top of the water inlet pipe for preventing eddy currents from being generated.

Preferably, in order to further improve the overflow effect and reduce the volume of the overflow valve, the water inlet pipe is arranged eccentrically with respect to the centerline of the overflow upper cover.

The present invention has the following beneficial effects:

1. Under normal circumstances, the rocking lever assembly is in a closed state under the balance of the load, the bottom of the water inlet pipe extends into the water storage area, and the water in the water storage area plays the role of isolating the air. When the drain valve is draining water, the outside air cannot enter the drain valve from the water inlet pipe, and the siphon effect greatly increases the drainage speed; when the water pressure pressure on the water seal structure is greater than the force of the load, the lever guide post drives the water seal structure. Rotate and open the water inlet pipe, the overflow valve realizes the overflow function.

2. The load can be counterweight or spring, with good balance effect, simple structure, convenient installation and disassembly.

3. By installing an overflow cap on the top of the water inlet pipe, when an overflow occurs, the overflow cap prevents the formation of eddy currents above the nozzle of the water inlet pipe, effectively reducing the noise from the water replenishment, and the water flow tends to be stable and relatively High water flow velocity, thus improving the overflow capacity of the overflow valve.

4. By setting the limit boss at the bottom of the support plate to interfere with the baffle plate and limit the rotation angle of the baffle plate, it can effectively prevent the lever guide post from being unable to reset due to the excessive opening angle of the guide column, resulting in The relief valve fails, allowing the relief valve to operate more stably.

5. The overflow valve of the present invention can be installed in the overflow pipe of the drain valve to realize the functions of isolating air and overflow, or can be installed at the bottom of the water tank separately to realize the functions of overflow and water replenishment.

Description of drawings

FIG. 1 is a schematic structural diagram of the relief valve of the present invention.

FIG. 2 is an exploded view of the parts of the relief valve of the first embodiment.

FIG. 3 is a schematic diagram of the internal structure of the overflow valve according to the first embodiment.

FIG. 4 is a schematic cross-sectional view along the A-A direction of FIG. 1 .

FIG. 5 is a schematic three-dimensional structure diagram of an overflow upper cover.

FIG. 6 is a schematic three-dimensional structure diagram of a lever guide post.

Fig. 7 is a working principle diagram of the relief valve of the first embodiment, wherein Fig. 7a is a schematic diagram of the principle when the relief valve is closed, Fig. 7b is a schematic diagram of the principle when the relief valve is opened, and Fig. 7c is a schematic diagram of the relief valve when the relief valve is fully opened. Schematic diagram of the principle.

8 is a schematic diagram 1 of the use state of the overflow valve of the first embodiment when it is installed on the overflow pipe of the drain valve.

FIG. 9 is a second schematic diagram of the use state of the overflow valve of the first embodiment when it is installed on the overflow pipe of the drain valve.

FIG. 10 is a schematic diagram 3 of a use state when the overflow valve of the first embodiment is installed on the overflow pipe of the drain valve.

FIG. 11 is a schematic diagram 1 of the use state of the relief valve of the first embodiment when it is installed alone.

12 is a second schematic diagram of the use state of the relief valve of the first embodiment when it is installed alone.

FIG. 13 is a schematic diagram 3 of the use state of the relief valve of the first embodiment when it is installed alone.

FIG. 14 is an exploded view of the parts of the relief valve of the second embodiment.

FIG. 15 is a schematic diagram of the internal structure of the overflow valve according to the second embodiment.

FIG. 16 is a schematic three-dimensional structural diagram of the overflow upper cover of the second embodiment.

Fig. 17 is a working principle diagram of the relief valve of the second embodiment, wherein Fig. 17a is a schematic diagram of the principle when the relief valve is closed, Fig. 17b is a schematic diagram of the principle when the relief valve is opened, and Fig. 17c is a schematic diagram of the relief valve when the relief valve is fully opened. Schematic diagram of the principle.

Description of main component symbols: 1. Shell; 10. Water guide cavity; 101. Inlet pipe; 102, Drain pipe; 103, Overflow cover; 104, Overflow base; 105, Overflow cap; 110, positioning hole; 111, limit boss; 12, connecting rod; 13, horizontal plate; 2, rocking lever assembly; 20, water storage area; 21, lever guide column; 210, positioning rod; 22, partition plate; 23, annular water baffle; 24, counterweight; 25, buckle; 26, spring; 3, drain valve; 30, overflow pipe; 4, water inlet valve; 40, water supply pipe; 5, water tank.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in Figures 1-6, an overflow valve includes a housing 1 and a rocking lever assembly. A water guiding cavity 10 is opened inside the housing 1, and the top and bottom of the housing 1 are respectively provided with a water guiding cavity 10 that communicates with the water guiding cavity 10. The water inlet pipe 101 and the drain pipe 102 are connected, and the bottom of the water inlet pipe 101 extends into the water guiding cavity 10 . A support member is fixed on the side of the water inlet pipe 101 at the top of the water guide cavity 10 . The support member includes two support plates 11 arranged in parallel and spaced apart from each other, and the support plates 11 are provided with positioning holes 110 .

The rocking lever assembly 2 includes a lever guide post 21 whose middle part is hinged with the lower part of the support, a water seal structure fixed at one end of the lever guide post 21 close to the water inlet pipe 101, and a water seal structure fixed at the other end of the lever guide post 21 and used to connect with the water seal. The structure forms a lever balanced load. The load is a counterweight 24 , and the counterweight 24 is fixed on one end of the lever guide post 21 away from the water seal structure through a buckle 25 . The water seal structure includes a partition plate 22 fixed on the lever guide post 21 and an annular water blocking plate 23 fixed on the top of the partition plate 22. The annular water blocking plate 23 and the partition plate 22 are enclosed to form a water storage area 20. . The bottom of the water inlet pipe 101 extends into the water storage area 20 , and the bottom surface of the water inlet pipe 101 is in sealing contact with the upper surface of the partition plate 22 . Two positioning rods 210 are formed on two sides of the lever guide post 21 extending outward respectively, and the two positioning rods 210 are respectively hinged with the positioning holes 110 on the two connecting plates 11 . The bottom of the connecting plate 11 extends downward to form a limiting boss 111 for interference fit with the partition plate 22 and limiting the rotation angle of the partition plate 22 .

The casing 1 includes an overflow upper cover 103 and an overflow base 104 that are plugged into each other. The water inlet pipe 101 is fixed on the overflow upper cover 103 , and the drain pipe 102 is fixed on the overflow base 104 . An overflow cap 105 for preventing eddy currents is installed on the top of the water inlet pipe 101 , and the water inlet pipe 101 is eccentrically arranged with respect to the centerline of the overflow upper cover 103 .

As shown in FIG. 7 , under normal circumstances, the lever guide post 21 is under the action of gravity of the counterweight block 24, the moment M1 of the counterweight block 24 is greater than the moment M2 of the other end of the lever guide post 21, and the lever guide post 21 is in the closed state (Fig. 7a). ); when the water seal structure is subjected to external force (such as replenishing water through a water supply pipe), and the moment M4 is greater than the moment M3 of the counterweight 24, the lever guide post 21 is opened (Fig. 7b); flow), when the torque M6 is greater than the torque M5 of the counterweight 24, the lever guide post 21 is fully opened to achieve overflow (Fig. 7c).

8-10 are schematic diagrams showing the use state of the overflow valve of this embodiment when it is installed on the overflow pipe 30 of the drain valve 3 . The overflow outlet is located on the side wall of the drain outlet of the valve base. In the initial state: the lever guide post 21 is in a closed state because the torque of the counterweight 24 is greater than the torque of the other end of the lever guide post 21; when the water inlet valve 4 is working , there are two streams of water, one is injected into the water tank 5 , and the other is injected into the water inlet pipe 101 through the water supply pipe 40 . When the torque generated by the flowing water stored in the water inlet pipe 101 is greater than the torque of the counterweight block 24, the lever guide post 21 is opened, and the excess water enters the toilet pipe through the drain port of the valve base to realize the function of "filling water".

When the water tank 5 is normally filled with water, the working water level is lower than the overflow water level, the torque of the counterweight 24 is greater than the torque of the other end of the lever guide post 21, and the lever guide post 21 is in a closed state. The bottom end of the water inlet pipe 101 is located in the water storage area 20, and the water in the water storage area 20 plays the role of isolating the air. That is, the valve seat drain port cannot communicate with the outside air through the overflow pipe 30 .

When the water inlet valve 4 does not stop and continues to feed water, the water tank 5 overflows, and the water flows into the water inlet pipe 101 from the side of the overflow cap 105 . When the lever guide post 21 is fully opened, the water flows to the toilet pipe through the drain port of the valve base to realize overflow.

Figures 11-13 are schematic diagrams showing the use state of the relief valve of this embodiment when it is installed alone. The overflow pipe 30 is independently installed on the water tank 5, the overflow outlet is arranged at the bottom of the water tank 5, and the side wall of the drain outlet of the drain valve base is no longer provided with an overflow channel. Initial state: The lever guide post 21 is in a closed state because the torque of the counterweight 24 is greater than the torque at the other end of the lever guide post 21; The other is injected into the water inlet pipe 101 through the supplementary water pipe 40 . When the torque generated by the flowing water stored in the water inlet pipe 101 is greater than the torque of the counterweight 24, the lever guide post 21 is opened, and the excess water enters the toilet pipe through the overflow pipe 30 to realize the function of "filling water".

When the water tank 5 is normally filled with water, the working water level is lower than the overflow water level, the torque of the counterweight 24 is greater than the torque of the other end of the lever guide post 21, and the lever guide post 21 is in a closed state. The bottom end of the water inlet pipe 101 is located in the water storage area 20, and the water in the water storage area 20 plays the role of isolating the air. That is, the valve seat drain port cannot communicate with the outside air through the overflow pipe 30 .

When the water inlet valve 4 does not stop and continues to feed water, the water tank 5 overflows, and the water flows into the water inlet pipe 101 from the side of the overflow cap 105 . When the lever guide post 21 is fully opened, the water flows to the toilet pipe through the overflow pipe 30 to realize the overflow.

Embodiment 2

As shown in Figures 14-16, the difference between this embodiment and the first embodiment is only that the load is a spring 26, a connecting rod 12 is fixed on the top wall of the water guide cavity 10 on the side of the support, and the lower part of the connecting rod 12 is at A horizontal plate 13 is fixed at a position lower than the hinged fulcrum of the lever guide post 21 , the lower end of the spring 26 is fixed on the horizontal plate 13 , and the upper end is connected to the bottom of the lever guide post 21 and is in a stretched state. The rest of the structure of this embodiment is the same as that of the first embodiment.

As shown in FIG. 17 , under normal circumstances, the lever guide post 21 is in a closed state due to the pulling force of the spring 26, the moment M1 generated by the spring 26 is greater than the moment M2 at the other end of the lever guide post 21, and the lever guide post 21 is in a closed state (FIG. 17a); When the water seal structure is subjected to external force (such as replenishing water through a water supply pipe), and the moment M4 is greater than the moment M3 generated by the spring 26, the lever guide post 21 is opened (Fig. 17b); , when the torque M6 is greater than the torque M5 generated by the spring 26, the lever guide post 21 is fully opened to achieve overflow (Fig. 17c). The rest of the installation methods and the functions implemented in this embodiment are the same as those in the first embodiment.

Although the present invention has been particularly shown and described in connection with preferred embodiments, it will be understood by those skilled in the art that changes in form and detail can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Various changes are within the protection scope of the present invention.

Claims (10)

1. The overflow valve comprises a shell, wherein a water guide cavity is formed in the shell, a water inlet pipe and a water drain pipe which are communicated with the water guide cavity are respectively arranged at the top and the bottom of the shell, and the bottom of the water inlet pipe extends into the water guide cavity and is characterized in that: the water inlet pipe is characterized by further comprising a swinging lever assembly, the top of the water guide cavity is arranged at the side edge of the water inlet pipe, the swinging lever assembly comprises a lever guide pillar, a water seal structure and a load, the middle portion of the lever guide pillar is hinged to the lower portion of the supporting piece, the water seal structure is fixedly arranged at one end, close to the water inlet pipe, of the lever guide pillar, the other end of the lever guide pillar is fixedly arranged at the other end of the lever guide pillar and used for forming lever balance with the water seal structure, the water seal structure comprises a partition plate and an annular water baffle plate, the partition plate is fixedly arranged on the lever guide pillar, the annular water.

2. A relief valve as defined in claim 1 wherein: the bottom surface of the water inlet pipe is in sealing fit with the upper surface of the partition plate.

3. A relief valve according to claim 1 or 2, characterized in that: the load is a balancing weight, and the balancing weight is fixedly connected with the end part of one end of the lever guide column far away from the water seal structure through threads or buckles.

4. A relief valve according to claim 1 or 2, characterized in that: the load is a spring, one end of the spring is fixed, and the other end of the spring is connected with the bottom of the lever guide post and is in a stretching state.

5. The relief valve according to claim 4, wherein: the top wall of the water guide cavity is fixedly provided with a connecting rod at the side edge of the supporting piece, the lower part of the connecting rod is fixedly provided with a transverse plate at the position lower than the hinged fulcrum of the lever guide pillar, and the lower end of the spring is fixed on the transverse plate.

6. A relief valve as defined in claim 1 wherein: the two sides of the lever guide pillar extend outwards respectively to form two positioning rods, the supporting piece comprises two supporting plates which are parallel to each other and arranged at intervals, positioning holes are formed in the supporting plates, and the two positioning rods are hinged to the positioning holes in the two connecting plates respectively.

7. The relief valve according to claim 6, wherein: the bottom of the connecting plate extends downwards to form a limiting boss which is used for being in interference fit with the partition plate and limiting the rotating angle of the partition plate.

8. A relief valve as defined in claim 1 wherein: the shell comprises an overflow upper cover and an overflow base which are mutually inserted, the water inlet pipe is fixedly arranged on the overflow upper cover, and the water outlet pipe is fixedly arranged on the overflow base.

9. The relief valve of claim 8, wherein: an overflow cap for preventing vortex generation is installed at the top of the water inlet pipe.

10. The relief valve of claim 8, wherein: the water inlet pipe is eccentrically arranged relative to the central line of the overflow upper cover.

Images