CN212004507U - a float valve - Google Patents

Abstract

The utility model discloses a floating ball valve, comprising a valve outer cylinder with a liquid inlet, a valve cover and a valve seat arranged at the upper and lower ends of the valve outer cylinder, a screw for tightening the valve cover and the valve seat, and a valve seat arranged in the valve outer cylinder. The valve inner cylinder, the valve core connected to the connecting rod and connected to the connecting rod is arranged in the inner valve cylinder and can slide up and down with the connecting rod in the inner valve cylinder. Hinges, fixed hinges arranged on the valve cover, respectively connecting the valve core and the connecting rod, connecting the moving hinge and the connecting rod, and connecting the three pins of the moving hinge and the fixed hinge; the valve outer cylinder, the valve inner cylinder and the valve cover, valve The seat is sealed up and down with a gasket. There is a sliding sealing ring between the valve core and the inner cylinder of the valve; the float valve has a simple structure, no matter the pressure of the liquid entering the float valve, the valve can be opened or closed normally without changing the length of the connecting rod or the volume of the float ball specialty.

Description

a float valve

technical field

The utility model belongs to the technical field of fluid control, in particular to a floating ball valve.

Background technique

The existing common float valve is composed of a crank arm and a float ball and other components, which can be used to automatically control the water inlet of a water tower or a pool, thereby controlling the liquid level.

The working principle of the floating ball valve is: the floating ball must always float on the liquid surface, and when the liquid level rises, the floating ball also rises. When the floating ball rises, the connecting rod also rises. The connecting rod is connected with the valve at the other end. When it rises to a certain position, the connecting rod supports the rubber piston pad to close the water source. When the water level drops, the float ball also drops with the liquid level, and the connecting rod drives the piston pad to open the water source. When the pressure of the inlet water source is relatively high, the connecting rod is driven by the rise of the floating ball, thereby driving the piston pad to close the inlet water source. Since the water inlet pressure on the piston is an axial force, sufficient driving force is required in this case. This driving force can only increase the buoyancy by increasing the volume of the floating ball, so that the piston driven by the connecting rod can obtain a sufficiently large effect. force to close the water inlet. Or in the case that the volume of the floating ball does not change, increase the length of the connecting rod, and drive the piston to close the water inlet by increasing the torque. However, whether it is to increase the volume of the floating ball or increase the length of the connecting rod, due to the space limitation of its use, it cannot provide enough space to install the floating ball valve with large volume floating ball and long connecting rod. Liquid level control method.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a floating ball valve, which has a simple structure, no matter the pressure of the liquid entering the floating ball valve, and does not need to change the length of the connecting rod or the volume of the floating ball The characteristics of opening or closing of the valve can be realized normally.

In order to achieve the above object, the technical scheme adopted by the present utility model is:

A floating ball valve, comprising a valve outer cylinder 01 with a liquid inlet, a valve cover 02 and a valve seat 16 arranged at the upper and lower ends of the valve outer cylinder 01, and a screw 03 for tightening the valve cover 02 and the valve seat 16, arranged on the valve outer cylinder The valve inner cylinder 13 in 01, the valve core 04 which is arranged in the valve inner cylinder 13 and connected with the connecting rod 06 and can slide up and down with the connecting rod in the valve inner cylinder 13, is fixed on the tail of the connecting rod 06 by the nut 08 The floating ball 07 at the end is set on the movable hinge 09 on the connecting rod 06, and the fixed hinge 10 set on the valve cover 02 connects the valve core 04 and the connecting rod 06, the movable hinge 09 and the connecting rod 06, and the movable hinge 09 and the connecting rod respectively. Three pins 05 of the fixed hinge 10.

An upper valve outer sealing gasket 11 is arranged between the valve outer cylinder 01 and the valve cover 02, and an upper valve inner sealing gasket 12 is arranged between the valve inner cylinder 13 and the valve cover 02; the valve outer cylinder 01 and the valve seat 16 There is a lower valve outer sealing gasket 14 therebetween, and a lower valve inner sealing gasket 15 is arranged between the valve inner cylinder 13 and the valve seat 16; a sliding sealing inner sealing ring is arranged between the valve core 04 and the valve inner cylinder 13 17.

The valve outer cylinder 01 is a cylindrical cylinder with a liquid inlet.

The valve inner cylinder 13 is a cylinder, and a plurality of holes are opened on the side of the lower end of the cylinder, and the number and size of the holes are adjustable.

The bottom of the valve seat 16 is a cylindrical cylinder with a liquid outflow nozzle. After the liquid enters from the nozzle of the valve outer cylinder 01, when the valve core 04 is at a high position, the side hole at the lower end of the valve inner cylinder 13 is open. In the state, the liquid enters the valve inner cylinder 13 and flows out from the nozzle at the lower end of the valve seat 16 .

In the above-mentioned floating ball valve, after the liquid enters the interior through the valve outer cylinder 01, since the float ball 07 is in a low position at this time, and the connecting rod 06 is connected by the pin 05, the valve core 04 is in a high position, so the valve inner cylinder 13 is in a high position. The hole on the side of the lower end is in an open state, and the liquid flows through the inner cylinder 13 of the valve and then flows out from the nozzle of the cylinder at the lower end of the valve seat 16 into the container. When the liquid level in the container rises, the float ball 07 also rises, the valve core 04 slides down to a low position driven by the connecting rod 06, the valve inner cylinder 13 is in a closed state, and the liquid stops flowing and entering. The gaskets between the valve inner cylinder 13, the valve outer cylinder 01, the valve cover 02, and the valve seat 16 are tightened and fixed by the screw 03 to prevent leakage. Two sealing rings 17 are installed on the valve core 04 to make the valve close more tightly when the valve core 04 is in a low position.

Compared with the prior art, the utility model has the following advantages:

1) A floating ball valve of the present invention has a valve outer cylinder 01, from which the liquid flows, while in other floating ball valves, the liquid flows axially from the valve core, and the valve core is pushed up by the axial jacking force. After the liquid flows from the valve outer cylinder 01 and enters the valve inner cylinder 13, the valve core is in a state of sliding up and down due to the opening on the side of the valve inner cylinder 13 in the present utility model, so the opening or closing between the valve core and the valve inner cylinder is Due to the shearing action, the valve core is no longer affected by the force on the valve core when the liquid flows axially in the prior art, so the floating ball valve is applicable regardless of the pressure of the liquid entering the floating ball valve.

2) In this utility model, due to the opening or closing of the valve core and the valve inner cylinder, the force of the oil flow in the prior art to push the valve core axially is optimized as a shear force, regardless of the pressure of the liquid entering the float valve. , the floating ball valve is applicable, so the selection of the size of the floating ball and the length of the connecting rod only needs to satisfy the driving force of the floating ball swinging up and down to overcome the friction force of the valve core moving up and down and its own gravity.

Description of drawings

Figure 1 shows the structure of the float valve.

Figure 2 is a schematic diagram of the working principle of the float valve.

Detailed ways

The present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, the present invention is a floating ball valve, comprising a valve outer cylinder 01 with a liquid inlet, a valve cover 02 and a valve seat 16 arranged at the upper and lower ends of the valve outer cylinder 01, and the valve cover 02 is tightened The screw 03 of the valve seat 16, the valve inner cylinder 13 arranged in the valve outer cylinder 01, the valve inner cylinder 13 connected to the connecting rod 06 and the valve inner cylinder 13 can slide up and down along with the connecting rod in the valve inner cylinder 13. The valve core 04, the floating ball 07 fixed on the end of the connecting rod 06 by the nut 08, the movable hinge 09 set on the connecting rod 06, and the fixed hinge 10 set on the valve cover 02 are respectively connected to the valve core 04 and the connecting rod 06, connecting The movable hinge 09 and the connecting rod 06, and the three pins 05 connecting the movable hinge 09 and the fixed hinge 10. An upper valve outer sealing gasket 11 is arranged between the valve outer cylinder 01 and the valve cover 02, and an upper valve inner sealing gasket 12 is arranged between the valve inner cylinder 13 and the valve cover 02; the valve outer cylinder 01 and the valve seat 16 There is a lower valve outer sealing gasket 14 therebetween, and a lower valve inner sealing gasket 15 is arranged between the valve inner cylinder 13 and the valve seat 16; a sliding sealing inner sealing ring is arranged between the valve core 04 and the valve inner cylinder 13 17.

The working principle of the floating ball valve of the present invention is as follows: after the liquid enters the interior through the valve outer cylinder 01, since the floating ball 07 is in a low position at this time, the connecting rod 06 is connected by the pin shaft 05 to keep the valve core 04 in a high position. Therefore, the hole on the side of the lower end of the valve inner cylinder 13 is in an open state, and the liquid flows through the valve inner cylinder 13 and then flows out from the tube orifice at the lower end of the valve seat 16 into the container. When the liquid level in the container rises, the float ball 07 also rises, the valve core 04 slides down to a low position driven by the connecting rod 06, the valve inner cylinder 13 is in a closed state, and the liquid stops flowing and entering. The gaskets between the valve inner cylinder 13, the valve outer cylinder 01, the valve cover 02, and the valve seat 16 are tightened and fixed by the screw 03 to prevent leakage. Two sealing rings 17 are installed on the valve core 04 to make the valve close more tightly when the valve core 04 is in a low position.

Claims (5)

1. A floating ball valve, characterized in that it comprises a valve outer cylinder (01) with a liquid inlet, a valve cover (02) and a valve seat (16) arranged on the upper and lower ends of the valve outer cylinder (01), and the valve cover is tightened (02) The screw (03) with the valve seat (16), the valve inner cylinder (13) arranged in the valve outer cylinder (01), the valve inner cylinder (13) connected to the connecting rod (06) The valve core (04), which can slide up and down with the connecting rod in the inner valve cylinder (13), is fixed to the floating ball (07) at the end of the connecting rod (06) through the nut (08), and is arranged on the connecting rod (06) The upper moving hinge (09), the fixed hinge (10) arranged on the valve cover (02), respectively connects the valve core (04) and the connecting rod (06), connects the moving hinge (09) and the connecting rod (06), and connects Three pins (05) of the movable hinge (09) and the fixed hinge (10). 2. A floating ball valve according to claim 1, characterized in that: an upper valve outer sealing gasket (11) is arranged between the valve outer cylinder (01) and the valve cover (02), and the valve inner cylinder (13) ) and the valve cover (02) are provided with an upper valve inner gasket (12); a lower valve outer gasket (14) is arranged between the valve outer cylinder (01) and the valve seat (16), and the valve inner cylinder is provided with a lower valve outer gasket (14). A lower valve inner sealing gasket (15) is arranged between (13) and the valve seat (16); a sliding sealing inner sealing ring (17) is arranged between the valve core (04) and the valve inner cylinder (13). 3. A floating ball valve according to claim 1, characterized in that: the valve outer cylinder (01) is a cylindrical cylinder with a liquid inlet. 4 . The ball float valve according to claim 1 , wherein the valve inner cylinder ( 13 ) is a cylinder, a plurality of holes are opened on the side surface of the lower end of the cylinder, and the number and size of the holes are adjustable. 5 . 5 . The ball float valve according to claim 1 , wherein the bottom of the valve seat ( 16 ) is a cylindrical cylinder with a liquid outflow nozzle. 6 .

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