A floating ball valve

Abstract

A float valve, characterized in that it includes a valve body with a valve core, a float driving part driving the valve core, the valve core is located at the water inlet end of the valve body valve port, and the float driving part includes a float and a connecting rod driven by the float to swing, the connecting rod passes through the water outlet end of the valve body valve port and is fixedly connected to the valve core. Compared with the prior art, the present invention has the advantages of simple structure, small volume of the float driving part, and can reliably drive the valve core to be close to or away from the valve port.

Description

Technical field:

[0002] The present invention relates to a valve. Background technology:

[0004] The existing float valve drives the valve to open or close by either driving the valve core from the water outlet end of the valve port or driving the valve core from the water inlet end of the valve port. Regardless of the method, the direction of the force driving the valve core is perpendicular to the valve port. In this way, the driving force needs to be greater than the force applied to the valve core in the positive direction of the water force in order to move the valve core away from the valve port or to close the valve port to the valve port. In this case, in order to ensure sufficient driving force, either the volume of the float is increased to increase the force of the float to drive the connecting rod and then drive the valve core, or the length of the connecting rod is increased to increase the torque to increase the force driving the valve core. Regardless of the method, the float drive part requires a relatively large volume. In some use occasions, due to the narrow space, there is not enough space to accommodate the existing float valve, and only other water level control methods with harsh use conditions and high costs can be used. Summary of the invention:

[0006] The object of the present invention is to provide a float valve with a simple structure, a small float drive part and the ability to reliably drive a valve core to be close to or away from a valve port.

[0007] The present invention is implemented as follows: it includes a valve body with a valve core and a float driving part that drives the valve core to move. The valve core is located at the water inlet end of the valve body valve port. The valve body is provided with a connection structure connected to a water supply source. The special feature of the present invention is that the float driving part includes a float and a connecting rod that is driven to swing by the float. The connecting rod passes through the water outlet end of the valve body valve port and is fixedly connected to the valve core.

[0008] During operation, the present invention is connected to a water supply source (external water supply pipe) through a connecting structure. When the water level in the pool is lower than the set water level, the float falls downward under the action of its gravity, driving the connecting rod to swing downward, and the connecting rod drives the valve core to flip open along its upper end fulcrum, so that the center axis of the valve core deviates from the center axis of the valve port, and the center axis of the valve core forms an angle with the center axis of the valve port, so that the lower end of the valve core leaves the valve port. After the lower end of the valve port opens a gap, water enters from the gap, and the thrust of the water entering partially offsets the thrust of the water on the valve core. In this way, under the weight of the float, the valve core is lifted and the valve core is lifted. Driven by force, the gap remains, thereby opening the float valve and injecting water into the pool. Because the force when the valve core opens along its upper end fulcrum is the torque force with the upper end of the valve core as the fulcrum, the force required for opening is very small, so a very short connecting rod and a very small float can meet the force requirements; when the injected water makes the water level of the pool reach the set water level, the connecting rod swings up driven by the float, so that the center axis of the valve core is parallel to the center axis of the valve port, and under the push of the incoming water, the gap disappears, the valve core moves toward the valve port and completely closes the valve port again.

[0009] Here, a connecting rod stop is provided on the valve body outside the water outlet of the valve port. The function of the connecting rod stop is to prevent the connecting rod from continuing to swing upward, causing the center axis of the valve core to deviate from the center axis of the valve port, so that the center axis of the valve core and the center axis of the valve port form an angle to open the valve port, so as to ensure that the valve remains closed when the water level of the pool exceeds the set water level.

[0010] A spring is arranged between the valve body and the valve core outside the water inlet end of the valve port. In this way, even if the water pressure is low, the valve core can be pushed to close the valve port under the action of the spring force.

[0011] Compared with the prior art, the present invention has the advantages of simple structure, small volume of the float driving part, and the ability to reliably drive the valve core to be close to or away from the valve port. Description of the drawings:

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 for Figure 1 Right view of;

[0015] Figure 3 This is the front view of the valve core;

[0016] Figure 4 This is a working principle diagram of the present invention. Specific implementation method:

[0018] The present invention is now described in further detail with reference to the accompanying drawings and embodiments:

[0019] As shown in the figure, the present invention includes a valve body a with a valve core 1, and a float driving part b that drives the valve core 1 to move. The valve core 1 is located at the water inlet end of the valve port 2 of the valve body a. A connecting structure connected to a water supply source is provided on the valve body a. The connecting structure is the part of the valve body outside the water inlet end of the valve port 2. This part of the valve body is a pipe 10 with a threaded connection structure 9. The special feature of the float driving part b is that it includes a float 3 and a connecting rod 4 that is driven by the float 3 to swing up and down. The connecting rod 4 penetrates from the water outlet end of the valve port 2 of the valve body a and is fixedly connected to the valve core 1.

[0020] A connecting rod stop 5 is arranged on the valve body a outside the water outlet end of the valve port 2.

[0021] A guide groove 6 parallel to the swing direction of the connecting rod is provided on the valve body a outside the water outlet end of the valve port 2 corresponding to the connecting rod 4. The connecting rod stop 5 is located at the top of the guide groove 6, and the connecting rod 4 swings up and down along the guide groove 6.

[0022] The middle part of the connecting rod stop 5 is provided with a notch 7. The function of the notch 7 is to prevent foreign matter from being retained at the connecting rod stop 5, so that the connecting rod 4 cannot reach the connecting rod stop 5 and the valve cannot be closed.

[0023] A spring 8 is arranged between the valve body a and the valve core 1 outside the water inlet end of the valve port 2 .

[0024] A mesh frame 11 (such as a stainless steel mesh) is arranged in the pipe 10 of the valve body a outside the water inlet end of the valve port 2, and the spring 8 is arranged between the mesh frame 11 and the valve core 1. The mesh frame 11 not only serves to position the spring 8, but also serves to filter foreign matter, thereby preventing the foreign matter from entering the valve port 2 with the water so that the valve core 1 cannot close the valve port 2.

[0025] An annular sealing cushion 12 is provided on the end face of the water inlet end of the valve port 2. The valve core 1 is made of hard materials that are not easily deformed (such as ceramics, metals (stainless steel or copper), and hard plastics). Only by using hard materials can it be effectively ensured that when the center axis A of the valve core 1 deviates from the center axis B of the valve port 2 under the drive of the connecting rod 4, the center axis A of the valve core 1 forms an angle with the center axis B of the valve port 2, so that the lower end of the valve core 1 leaves the valve port 2, and the lower end of the valve port 2 opens a gap; at the same time, it is also convenient for the connecting rod 4 to be fixedly connected to the valve core 1, and after the fixed connection, the positional relationship between the connecting rod 4 and the valve core 1 will not be offset. The annular sealing cushion 12 provided on the end face of the water inlet end of the valve port 2 ensures that the valve core 1 seals and covers the valve port 2.

[0026] like Figure 1 , Figure 2 As shown, a power transmission mechanism c is arranged between the float 3 and the connecting rod 4. The power transmission mechanism c includes a rocker rod 13 with one end fixedly connected to the float and the other end swingably connected to the valve body a. The rocker rod 13 swings up and down perpendicular to the center axis B of the valve port 2. A slide groove 14 is arranged on the rocker rod 13, and the connecting rod 4 slides through the slide groove 14.

[0027] A water level regulating mechanism 16 is provided on the swing rod 13 .

[0028] like Figure 3 As shown, the valve core 1 is disc-shaped, and a plurality of notches 17 are arranged around the disc-shaped valve core 1. The function of the notches 17 is that when the valve is opened, the valve core 1 rotates under the driving force of the flowing water acting on the notches 17, so that foreign matter carried by the water is not easy to stay on the valve core 1 or the valve port 2, ensuring that no foreign matter affects the sealing closure of the valve.

[0029] The mesh frame 11 (stainless steel mesh 11 ) is fixed on the step on the inner wall of the pipe 10 by interference fit or by means of a screw ring 18 .

[0030] like Figure 4As shown, when the water level of pool d is lower than the set water level, the float 3 drives the connecting rod 4 to swing down through the swing rod 13, and the connecting rod 4 drives the valve core 1 to flip open from the valve port 2 along its upper end fulcrum G, so that the central axis A of the valve core 1 deviates from the central axis B of the valve port 2, and the central axis A of the valve core 1 forms an angle D with the central axis of the valve port B, so that the lower end of the valve core 1 leaves the valve port 2, and after the gap F is opened at the lower end of the valve port 2, water enters from the gap F, and the thrust of the entering water partially offsets the thrust of the water on the valve core 1. In this way, driven by the gravity of the float 3, the gap F is maintained, so that the float valve is opened and water is injected into the pool d; when the injected water makes the water level of pool d reach the set water level, the connecting rod 4 is driven by the float 3 to swing up, so that the central axis A of the valve core 1 is parallel to the central axis B of the valve port 2, and the gap F disappears under the push of the incoming water, and the valve core 1 moves toward the valve port 2 and completely closes the valve port 2 again.

Claims

1. A float valve, characterized in that It includes a valve body with a valve core and a float driving part driving the valve core, the valve core is located at the water inlet end of the valve body valve port, and the valve body is provided with a connection structure connected to a water supply source. The float driving part includes a float and a connecting rod driven to swing by the float, the connecting rod passes through the water outlet end of the valve body valve port and is fixedly connected to the valve core, and a connecting rod stop is provided on the valve body outside the water outlet end of the valve port; When the water level in the pool is lower than the set water level, the float falls down under the action of its gravity, driving the connecting rod to swing down, and the connecting rod drives the valve core to open along its upper end fulcrum, so that the central axis of the valve core deviates from the central axis of the valve port, and the central axis of the valve core forms an angle with the central axis of the valve port, so that the lower end of the valve core leaves the valve port. After the lower end of the valve port opens a gap, water enters through the gap, and the thrust of the incoming water partially offsets the thrust of the water on the valve core. In this way, driven by the gravity of the float, the gap remains, thereby opening the float valve and injecting water into the pool. Since the force when the valve core opens along its upper end fulcrum is the force with the upper end of the valve core as the fulcrum. The force of the moment is small, so the force required to open it is very small. In this way, a very short connecting rod and a very small floating ball can meet the force requirement. When the water injected makes the water level of the pool reach the set water level, the connecting rod is driven by the floating ball to swing up, so that the center axis of the valve core is parallel to the center axis of the valve port. Under the push of the incoming water, the gap disappears, the valve core moves toward the valve port and completely closes the valve port again. The function of the connecting rod stop is to prevent the connecting rod from continuing to swing up, causing the center axis of the valve core to deviate from the center axis of the valve port, so that the center axis of the valve core and the center axis of the valve port form an angle to open the valve port, so as to ensure that when the water level of the pool exceeds the set water level, the valve remains closed. A guide groove parallel to the swing direction of the connecting rod is arranged at the corresponding connecting rod on the valve body outside the water outlet of the valve port, the connecting rod stop is located at the top of the guide groove, the connecting rod swings up and down along the guide groove, a power transmission mechanism is arranged between the float and the connecting rod, the power transmission mechanism includes a swing rod fixedly connected to the float at one end and swingably connected to the valve body at the other end, the swing rod swings up and down perpendicular to the central axis of the valve port, a slide groove is arranged on the swing rod, and the connecting rod slides through the slide groove; A notch is provided in the middle of the connecting rod stop; An annular sealing cushion is provided on the end face of the water inlet of the valve port, and the valve core is made of a hard material that is not easily deformed; The valve core is made of hard material to effectively ensure that when the center axis of the valve core deviates from the center axis of the valve port under the drive of the connecting rod, the center axis of the valve core and the center axis of the valve port form an angle, so that the lower end of the valve core leaves the valve port, and the lower end of the valve port opens a gap; at the same time, it is also convenient for the connecting rod to be fixedly connected to the valve core, and after the fixed connection, the positional relationship between the connecting rod and the valve core will not shift, and an annular sealing cushion is used to ensure that the valve core seals and covers the valve port.

2. The float valve according to claim 1, characterized in that: A spring is arranged between the valve body and the valve core outside the water inlet end of the valve port.

3. The float valve according to claim 2, characterized in that: The part of the valve body outside the water inlet end of the valve port is a pipe with a threaded connection structure, and a mesh frame spring is arranged in the pipe and arranged between the mesh frame and the valve core.

4. The float valve according to claim 3, characterized in that: The mesh frame is fixed to the step on the inner wall of the pipe by means of screw rings.

5. The float valve according to claim 1, 2, 3 or 4, characterized in that: The material of the valve core is hard plastic or stainless steel, and the valve core is disc-shaped, and a plurality of notches are arranged around the disc-shaped valve core.

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