CN201875269U - Negative pressure quick closing floating ball switch - Google Patents

Abstract

The utility model discloses a negative pressure quick-closing float switch, which belongs to the technical field of float switches for water purifier equipment. One end is formed with a water inlet, and the other end is formed with a water inlet and a water outlet connected to it. The lower part of the valve body is formed with a water outlet. The upper end of the water outlet is provided with a sealing ring gasket, which divides the space in the valve body. It is an upper valve chamber and a lower valve chamber, the upper valve chamber communicates with the water inlet, the lower valve chamber communicates with the water inlet hole, and the upper valve chamber communicates with the water outlet hole through the through hole. The utility model has reasonable structure and equipment, can change the opening or closing state of the sealing ring gasket by changing the pressure of the water tank to realize the communication or closing between the water inlet and the water outlet, and there is no mechanical float of the existing mechanical float switch Rust and wear, flexible action, reliable performance, long service life.

Description

A negative pressure quick-closing float switch

technical field

The utility model relates to the technical field of a float switch, in particular to a negative pressure quick-closing float switch.

Background technique

At present, the wall-mounted direct water dispenser sold in the market has a mechanical float switch inside the water tank inside the direct water dispenser. Due to the unreasonable structural setting of the mechanical float switch, the mechanical float of the existing wall-mounted direct water dispenser The pressure of the ball is limited, and none of them can withstand a pressure of 8 kg or more. If the pressure exceeds this limit, it is easy to cause the failure of the mechanical float switch, which will cause the water tank to overflow. Therefore, the service life of the mechanical float switch is short, the reliability is poor, and it is prone to leakage, which will eventually affect the use and quality of the entire product. It is really necessary to reasonably improve the existing mechanical float switch.

Utility model content

The purpose of the utility model is to overcome the deficiencies and defects of the prior art, and to provide a negative pressure quick-closing float switch with reasonable structure, high reliability and low leakage.

In order to realize the above-mentioned purpose of the invention, the utility model adopts the following technical solutions:

The utility model is a negative pressure quick-closing float switch, which includes a valve body, the valve body is formed by connecting an upper valve body and a lower valve body, one end of the valve body is formed with a water inlet, and the other end is formed with a water inlet and a water inlet. The water outlet hole connected with it, the lower part of the valve body is formed with a water outlet, the upper end of the water outlet is provided with a sealing ring gasket, and the sealing ring gasket divides the space in the valve body into an upper valve chamber and a lower valve chamber. The chamber is connected with the water inlet, the lower valve chamber is connected with the water inlet hole, and the upper valve chamber is connected with the water outlet hole through the through hole. The lower part is provided with a convex part which is clamped in the center hole of the sealing ring gasket, and the pressure plate is provided with a pressure relief hole, one end of the pressure relief hole is provided on the convex part, and the other end is provided at the bonding place of the pressure plate and the sealing ring gasket; A switch adjustment device is provided at the outer end of the water outlet, and the switch adjustment device includes a guide rod, a rubber sleeve connected to the guide rod and a floating ball connected to the other end of the guide rod, and the guide rod is rotatable through a fixed pin. It is arranged on the valve body, and the rubber sleeve is arranged on the outer end of the outlet hole.

Further, the cross-sectional area of the water outlet hole is larger than the cross-sectional area of the water inlet hole.

Further, the cross-sectional area of the pressure relief hole is smaller than the cross-sectional area of the water inlet hole.

Further, a return spring is provided between one end of the guide rod connected to the rubber sleeve and the valve body.

Further, the sealing ring gasket is provided with a film boss ring.

The beneficial effects of the utility model are: the structure and equipment of the utility model are reasonable, and the opening or closing state of the sealing ring gasket can be changed by changing the pressure of the water tank to realize the connection or closure between the water inlet and the water outlet, and there is no existing The mechanical float of the mechanical float switch is rusted and worn, with flexible action, reliable performance and long service life.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

In the picture:

1. Lower valve body, 2. Upper valve body, 3. Pressure plate, 4. Seal ring gasket,

5. Rubber sleeve, 6. Guide rod, 7. Pressure relief hole, 8. Water inlet hole,

9. Through hole, 10. Water outlet hole, 11. Film boss ring, 12. Fixed pin,

13, floating ball, 14, convex part

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, the utility model is a negative pressure quick-closing float switch, which includes a valve body, the valve body is formed by connecting the upper valve body 2 and the lower valve body 1, the lower valve body 1 and the upper valve body 2 generally made of metal materials in order to withstand higher water pressure.

One end of the valve body is formed with a water inlet A, and the other end is formed with a water inlet 8 and a water outlet 10 connected thereto. The cross-sectional area of the water outlet 10 is greater than that of the water inlet 8 cross-section. The lower part of the valve body is formed with a water outlet B, and the upper end of the water outlet B is provided with a sealing ring gasket 4, that is, the water inlet A and the water outlet B are separated from each other by the sealing ring gasket 4.

The sealing ring gasket 4 divides the space in the valve body into an upper valve chamber D and a lower valve chamber C, the upper valve chamber D communicates with the water inlet A, the lower valve chamber C communicates with the water inlet 8, and the upper valve chamber The chamber D communicates with the water outlet hole 10 through the through hole 9 , that is, the upper valve chamber D communicates with the lower valve chamber C through the through hole 9 , the water outlet hole 10 and the water inlet hole 8 .

The sealing ring gasket 4 is generally made of plastic material with good compressive and tensile strength, a central hole is arranged in the middle, and a film boss ring 11 is arranged around the central hole. The pressure plate 3 is arranged on the sealing ring gasket 4, and the lower part of the pressure plate 3 is provided with a convex portion 14 which is stuck in the center hole of the sealing ring gasket 4. The pressure plate 3 is provided with a pressure relief hole 7, and one end of the pressure relief hole 7 is provided At the protruding portion 14 , the other end is located at the bonding place between the pressure plate 3 and the sealing ring gasket 4 . The cross-sectional area of the pressure relief hole 7 is smaller than the cross-sectional area of the water inlet hole 8 .

The outer end of the water outlet hole 10 is provided with a switch adjustment device, the switch adjustment device includes a guide rod 6, a rubber sleeve 5 connected to the guide rod 6 and a float 13 connected to the other end of the guide rod 6, the guide rod 6 is rotatably arranged on the valve body through the fixed pin 12, the rubber sleeve 5 is arranged at the outer end of the water outlet hole 10, and a return spring is arranged between the end of the guide rod 6 connected to the rubber sleeve 5 and the valve body.

Working principle of the present utility model: in the course of work, assume that the utility model is now in a closed state. At this time, the rubber sleeve 5 has sealed the water outlet hole 10 under the action of the guide rod 6, and the upper valve chamber D and the lower valve chamber C is connected through the through hole 9, the water outlet hole 10 and the water inlet hole 8, and the water pressure is the same. Since the bottom of the sealing ring gasket 4 and the pressure plate 3 are exposed to the air outside the water outlet B at this time, the pressure received is less than the water pressure. The sealing ring gasket 4 and the pressure plate 3 are unbalanced in pressure, and it is under the pressure difference that the sealing ring gasket 4 seals the water outlet B. In addition, at this time, because one end of the pressure relief hole 7 located at the junction of a sealing ring gasket 4 and the pressure plate 3 is closed, the pressure relief hole 7 is also in a closed state.

When the water level in the water tank is lower than the control water level, the floating ball 13 descends, drives the guide rod 6 to make the rubber sleeve 5 leave the water outlet hole 10, and the water outlet hole 10 is opened. area, the water in the upper valve chamber D flows through the through hole 9 and discharges through the water outlet hole 10, the water pressure in the upper valve chamber D decreases, and under the action of the pressure difference, the sealing ring gasket 4 and the pressure plate 3 move upward, and the water outlet B opens. In addition, at this time, there will be a gap between the pressure plate 3 and the sealing ring gasket 4, so that the pressure relief hole 7 is also in an open state, and part of the water in the upper valve chamber D flows out through the pressure relief hole 7, and the water pressure in the upper valve chamber D Rapidly lowering, the sealing ring gasket 4 leaves the water outlet B quickly, and the water valve is in a fully open state soon, and the water inlet A and the water outlet B are in a connected state.

With the rise of the water level in the water tank, when approaching the control water level, the floating ball 13 drives the guide rod 6 to make the rubber sleeve 5 close to the water outlet hole 10, so that the water flow decreases. The water pressure at 10 places of the water outlet hole increases. The amount of water flowing out of the water inlet hole 8 will gradually increase, and the water pressure will increase, pushing the sealing ring gasket 4 and the pressure plate 3 close to the water outlet B, and the gap between the sealing ring gasket 4 and the pressure plate 3 will become smaller, so that the leakage The pressure hole 7 is gradually blocked until it is completely blocked, and finally the sealing ring gasket 4 seals the water outlet B. At this time, the rubber sleeve 5 has sealed the water outlet 10, and the closing process of the water valve is completed. In order to effectively help the floating ball 13 to return, a return spring is arranged between the end of the guide rod 6 connected to the rubber sleeve 5 and the valve body.

The utility model has reasonable structure and equipment, can change the opening or closing state of the sealing ring gasket by changing the pressure of the water tank to realize the communication or closing between the water inlet and the water outlet, and there is no mechanical float of the existing mechanical float switch Rust and wear, flexible action, reliable performance, long service life.

The above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application scope are all included in the utility model patent application scope .

Claims (5)

1. A negative pressure quick-closing float switch, which includes a valve body, the valve body is formed by connecting an upper valve body (2) and a lower valve body (1), and one end of the valve body is formed with a water inlet (A) , the other end forms the water inlet hole (8) and the water outlet hole (10) connected with it, the lower part of the valve body forms a water outlet (B), and the upper end of the water outlet (B) is provided with a sealing ring gasket (4) , the sealing ring gasket (4) divides the space in the valve body into an upper valve chamber (D) and a lower valve chamber (C), the upper valve chamber (D) communicates with the water inlet (A), and the lower valve chamber ( C) It communicates with the water inlet hole (8), and the upper valve chamber (D) communicates with the water outlet hole (10) through the through hole (9); the middle part of the sealing ring gasket (4) is provided with a central hole, and the pressure plate (3) Set on the sealing ring gasket (4), the lower part of the pressure pole (3) is provided with a convex part (14) which is stuck in the center hole of the sealing ring gasket (4), and the pressure plate (3) is provided with a pressure relief hole (7), one end of the pressure relief hole (7) is set at the convex portion (14), and the other end is set at the joint between the pressure plate (3) and the sealing ring gasket (4); it is characterized in that: the water outlet hole (10 ) is provided with a switch adjustment device at the outer end, and the opening and adjustment device includes a guide rod (6), a rubber sleeve (5) connected to the guide rod (6) and a floating ball connected to the other end of the guide rod (6) ( 13), the guide rod (6) is rotatably arranged on the valve body through the fixed pin (12), and the rubber sleeve (5) is arranged at the outer end of the water outlet hole (10). 2. A negative pressure quick-closing float switch according to claim 1, characterized in that: the cross-sectional area of the water outlet hole (10) is larger than the cross-sectional area of the water inlet hole (8). 3. A negative pressure quick-closing float switch according to claim 1, characterized in that: the cross-sectional area of the pressure relief hole (7) is smaller than the cross-sectional area of the water inlet hole (8). 4. A negative pressure quick-closing float switch according to any one of claims 1-3, characterized in that: a valve body is provided between one end of the guide rod (6) connected to the rubber sleeve (5) and the valve body return spring. 5. A negative pressure quick-closing float switch according to claim 4, characterized in that: the sealing ring gasket (4) is provided with a film boss ring (11). the

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