CN201014003Y - Self-adjusting float valve - Google Patents

Abstract

The utility model discloses an automatic adjustment float valve which is composed of a valve body, a water inlet, a water outlet and the like. The cylinder spool, the upper valve plate and the lower valve plate have holes matching the spool, the spool is axially fixed by the upper and lower guide rings, a sealing ring is provided between the upper shaft of the spool and the valve body cover and The connecting rod is connected with the floating ball, the upper chamber and the lower chamber are connected by a pressure regulating pipe, and the valve core is provided with a bowl-shaped upper and lower sealing ring on the edge of the hole of the upper valve plate and the lower valve plate. The valve core is designed as a cylinder, so that the radial force of the valve body under water pressure is zero, and at the same time, there is almost no axial force, so that the opening of the valve depends entirely on the buoyancy of the floating ball. The utility model is simple in structure and sensitive in operation. The cost is low and automatic adjustment is realized, which is a major innovation to the existing technology.

Description

Self-adjusting float valve

technical field

The utility model relates to a liquid flow control valve, in particular to an automatic adjustment float valve used for automatic control of the water level of pools and water towers.

Background technique

At present, the general-purpose control valves for pools and water towers generally have the following three forms: First, the existing ordinary valves are opened and closed by manpower at regular intervals. Valves rely on electrical signals to control the motor to open and close the valve. Its disadvantages are: in harsh environments such as wind and rain, humidity, high temperature, low temperature, etc., it is prone to failure, and a special machine room is required, which consumes energy and causes high cost of use; the third is the hydraulic automatic control valve, the existing hydraulic automatic adjustment valve, If the piston area is too large, it is easy to get out of control if the water pressure in the pipeline is unstable during use, resulting in poor sealing of the piston. When used at low temperature, due to the small diameter of the control pipe, it is easy to freeze the pipe, which will cause the valve to be out of control, so it is not suitable for use in harsh conditions. In short, the float control valves currently on the market all have shortcomings such as large volume, low flow rate, high wear and easy damage to the piston, complex structure, and easy damage to small parts.

Contents of the invention

The purpose of the utility model is to provide a self-adjusting float valve with simple structure, sensitive operation and low cost, which can be used in harsh environments.

The technical scheme of the utility model is realized in this way. The automatic adjustment float valve is composed of a valve body, a water inlet, a water outlet, etc., and the inner cavity of the valve body is divided into three cavities: upper, middle and lower by the upper valve plate and the lower valve plate. , the valve body is equipped with a cylindrical spool, the upper valve plate and the lower valve plate have holes matching the spool, the spool is axially fixed by the upper and lower guide rings, and the upper shaft of the spool and the valve body cover are set There is a sealing ring and is connected with the floating ball through the connecting rod. There is a pressure regulating pipe between the upper cavity and the lower cavity.

The beneficial effects of the utility model are: using the theory of liquid pressure, the valve core is designed as a cylinder, so that the radial force of the valve core under water pressure is zero, and at the same time, almost no axial force is generated, so that the opening of the valve depends entirely on the floating ball Due to the buoyancy force, the valve closes when the buoy floats up, and opens when it sinks, so as to achieve the purpose of self-control of the valve without human control at all. There is a pressure regulating tube in the valve body, which connects the upper cavity and the water outlet, and keeps the upper cavity in a low pressure state, and cooperates with the floating ball to make the valve reach the automatic adjustment state. In addition, the valve sealing ring is made of high-elastic and wear-resistant special materials, and is designed as a bowl-shaped slope toward the water. According to the theory of liquid pressure, when the valve core sinks and the valve is closed, the water pressure will cause the sealing ring to slightly deform, making the sealing ring It is closely combined with the lower valve plate of the valve core to completely eliminate the problem of water leakage, so as to achieve the effect of efficient sealing. The utility model is simple in structure, sensitive in operation, low in cost, realizes automatic adjustment, and is a major innovation to the prior art.

Description of drawings

Figure 1 is a schematic diagram of the automatic adjustment float valve.

Figure 2 is a schematic cross-sectional view of the automatic adjustment float valve.

Figure 3 Partial enlarged view A of the self-adjusting float valve.

Figure 4 Partial enlarged view B of the self-adjusting float valve.

In Figure 1---Figure 4, 1-sealing ring, 2-shaft, 3-upper cavity, 4-upper sealing ring, 5-spool, 6-water inlet, 7-middle cavity, 8-lower Sealing ring, 9-lower chamber, 10-connecting rod, 11-upper valve plate, 12-valve body, 13-pressure regulating tube, 14-floating ball, 15-lower valve plate, 16-water outlet.

Detailed ways

The utility model is described in detail below in conjunction with the accompanying drawings. The automatic adjustment float valve is composed of a valve body (12), a water inlet (6), and a water outlet (16). The plate (15) is divided into upper, middle and lower cavities (3, 7, 9), the valve body (12) is provided with a cylindrical valve core (5), and the upper valve plate and the lower valve plate (11, 15) There is a hole matching the valve core (5), the valve core (5) is axially fixed by the upper and lower guide rings, and a sealing ring ( 1) It is connected with the floating ball (14) through the connecting rod (10), the pressure regulating tube (13) is connected between the upper chamber (3) and the lower chamber (9), and the valve core (5) is connected with the upper valve plate (11), the hole edge of lower valve plate (15) is provided with bowl-shaped upper and lower sealing rings (4,8).

Claims (1)

1. The self-adjusting float valve is composed of a valve body, water inlet, water outlet, etc. It is characterized in that the inner cavity of the valve body is divided into upper, middle and lower chambers by the upper valve plate and the lower valve plate, and the valve body is equipped with columns The upper valve plate and the lower valve plate have holes matching the valve core. The valve core is axially fixed by the upper and lower guide rings. There is a sealing ring between the upper shaft of the valve core and the valve body cover and passes The connecting rod is connected with the floating ball, and the pressure regulating pipe is connected between the upper cavity and the lower cavity. The valve core is provided with a bowl-shaped upper and lower sealing ring on the edge of the hole of the upper valve plate and the lower valve plate.

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