CN211779013U

CN211779013U - Large-diameter water control valve

Info

Publication number: CN211779013U
Application number: CN202020407568.6U
Authority: CN
Inventors: 陈政妙
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-10-27
Anticipated expiration: 2030-03-26

Abstract

The utility model relates to a heavy-calibre water control valve. The problem that the sealing requirement cannot be met when the calibers of the water inlet pipe and the water outlet pipe are increased by the existing automatic water control valve is mainly solved. The method is characterized in that: install valve clack (6) and diaphragm (7) between inlet tube (3) and end cover (5), back pressure chamber (8) communicate with each other with outlet pipe (4) through inside passageway (12), control chamber (10) on end cover (5), can promote lever (15) shutoff damping orifice (13) when float (14) rise, make control diaphragm (11) shutoff control chamber (10) in order to block the passageway between back pressure chamber (8) and outlet pipe (4). The utility model discloses a valve clack and diaphragm connection structure of independent valve body, stereoplasm, by the pressure in the back pressure chamber of the indoor float control diaphragm of float, utilize differential principle to make the diaphragm promote the valve clack and close, the bore of inlet tube and outlet pipe is unrestricted, can satisfy large-traffic demand, can reach sealed requirement between the valve clack of stereoplasm and the inlet tube simultaneously, the phenomenon of leaking can not appear.

Description

Large-diameter water control valve

Technical Field

The utility model relates to an automatic device of control water level, concretely relates to heavy-calibre water control valve.

Background

The automatic water control valve is a valve for automatically controlling the water level in the container, the opening and the closing of a water inlet of the valve are controlled through the lifting of the floater, when the water level in the container reaches a set water level, the valve clack is automatically closed by the floater under the action of buoyancy, when the water in the container is lower than the set water level, the floater sinks downwards under the action of self gravity, the valve clack is opened, the valve is automatically opened, and water enters the container. The existing water control valve mainly comprises a valve body, a float chamber and a diaphragm type valve core assembly, wherein the float chamber is connected below the valve body, and a water inlet pipe and a water outlet pipe are respectively arranged on two sides of the valve body. The existing automatic water control valve has the following technical defects: the diaphragm type valve core component is of an integrated structure, namely the diaphragm and the valve clack are integrated, the structure is compact, and the diaphragm type valve core component is suitable for a water inlet pipe and a water outlet pipe with small diameters. When the working condition requires a large flow, the calibers of the water inlet pipe and the water outlet pipe are increased, and the diaphragm is made of flexible materials, so that the water inlet pipe and the diaphragm are difficult to seal, water leakage can occur, and the sealing requirement can not be met. Therefore, a large-diameter water control valve which can meet the requirement of large flow and can ensure that the sealing requirement between the valve clack and the water inlet pipe is met is urgently needed.

SUMMERY OF THE UTILITY MODEL

Can not satisfy sealed not enough when overcoming the bore of current automatic water control valve increase inlet tube and outlet pipe, the utility model provides a heavy-calibre water control valve, this heavy-calibre water control valve adopt independent valve body, the valve clack and the diaphragm connection structure of stereoplasm, by the pressure in the back pressure chamber of the indoor float control diaphragm of float, utilize differential principle to make the diaphragm promote the valve clack and close, the bore of inlet tube and outlet pipe is unrestricted, can satisfy large-traffic demand, can reach sealed requirement between the valve clack of stereoplasm and the inlet tube simultaneously, the phenomenon of leaking can not appear.

The technical scheme of the utility model is that: a large-diameter water control valve comprises a valve body and a float chamber, wherein a water inlet pipe and a water outlet pipe are arranged on the valve body, an end cover is connected onto the valve body, the water inlet pipe extends into the valve body and corresponds to the end cover, a valve clack and a diaphragm are arranged between the water inlet pipe and the end cover, the valve clack is composed of a hard valve clack body and an end face sealing gasket, the hard valve clack body is fixed with the diaphragm, the end face sealing gasket is embedded at one end of the hard valve clack body and corresponds to the extending end of the water inlet pipe, the diaphragm is clamped between the valve body and the end cover, a back pressure cavity is formed between the diaphragm and the end cover, and central holes communicated; the upper end of the float chamber is provided with a control cavity, a control diaphragm is arranged in the control cavity, the back pressure cavity is communicated with the water outlet pipe through an internal channel and the control cavity on the end cover, a damping hole is arranged below the control diaphragm, a float is arranged in the float chamber and corresponds to the control lever, and the lever can be pushed to block the damping hole when the float rises, so that the control diaphragm blocks the control cavity to block the channel between the back pressure cavity and the water outlet pipe.

And a pressure regulating spring is arranged between the diaphragm and the end cover.

The pressure regulating spring is provided with a spring seat, a guide needle is fixed on the spring seat, and the guide needle is inserted into the central hole.

The end cover is connected with the valve body through a bolt.

The utility model discloses following beneficial effect has: the utility model discloses a valve clack and diaphragm connection structure of independent valve body, stereoplasm, by the pressure in the back pressure chamber of the indoor float control diaphragm of float, utilize differential principle to make the diaphragm promote the valve clack and close, the bore of inlet tube and outlet pipe is unrestricted, can satisfy large-traffic demand, can reach sealed requirement between the valve clack of stereoplasm and the inlet tube simultaneously, the phenomenon of leaking can not appear.

Drawings

Fig. 1 is a structural sectional view of the present invention.

Fig. 2 is a sectional view of the installation structure of the valve flap 6 in fig. 1.

In the figure, 1-a valve body, 2-a float chamber, 3-a water inlet pipe, 4-a water outlet pipe, 5-an end cover, 6-a valve clack, 61-a hard valve clack body, 62-an end face sealing gasket, 7-a diaphragm, 8-a back pressure cavity, 9-a central hole, 10-a control cavity, 11-a control diaphragm, 12-an internal channel, 13-a damping hole, 14-a float, 15-a lever, 16-a pressure regulating spring, 17-a spring seat, 18-a guide needle and 19-a bolt.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-2, a large-diameter water control valve includes a valve body 1 and a float chamber 2, the valve body 1 is provided with a water inlet pipe 3 and a water outlet pipe 4, the valve body 1 is connected with an end cover 5, the water inlet pipe 3 extends into the valve body 1 and corresponds to the end cover 5, a valve flap 6 and a diaphragm 7 are installed between the water inlet pipe 3 and the end cover 5, the valve flap 6 is composed of a hard valve flap body 61 and an end face gasket 62, the hard valve flap body 61 is fixed with the diaphragm 7, the end face gasket 62 is embedded in one end of the hard valve flap body 61 and corresponds to the extending end of the water inlet pipe 3, the diaphragm 7 is clamped between the valve body 1 and the end cover 5, a back pressure cavity 8 is formed between the diaphragm 7 and the end cover 5, and a central hole 9 communicated with the back pressure cavity 8 is; the upper end of the float chamber 2 is provided with a control cavity 10, a control diaphragm 11 is arranged in the control cavity 10, the back pressure cavity 8 is communicated with the water outlet pipe 4 through an internal channel 12 and the control cavity 10 on the end cover 5, a damping hole 13 is arranged below the control diaphragm 11, a float 14 is arranged in the float chamber 2, the float 14 corresponds to the control lever 15, the lever 15 can be pushed to block the damping hole 13 when the float 14 rises, and the control diaphragm 11 blocks the control cavity 10 to block the channel between the back pressure cavity 8 and the water outlet pipe 4. By adopting the technical scheme, when water is injected into the container, water enters from the water inlet pipe 3, the valve flap 6 is pushed open under the pressure action of the water, most of the water enters the container through the valve body 1 through the water outlet pipe 4, and the other part of the water enters the backpressure cavity 8 through the central hole 9 and then enters the control cavity 10 through the internal channel 12, the control membrane 11 is pushed open downwards under the pressure action of the water, and the water enters the water outlet pipe 4 from the control cavity 10 and flows into the container. When the water level in the container reaches a preset height, the floater rises upwards under the buoyancy action of water and pushes the lever 15 to plug the damping hole 13, the control diaphragm 11 cannot be pushed away by the water because the damping hole 13 is plugged, the control diaphragm 11 seals the control cavity 10, the back pressure cavity 8 cannot be decompressed, and the area of the diaphragm 7 acted by the water in the back pressure cavity 8 is larger than the area of the valve flap 6 acted by the water in the water inlet pipe 3, so that the diaphragm 7 drives the valve flap 6 to move towards the water inlet pipe 3 until the valve flap 6 seals the water inlet pipe 3, and the water inlet channel is closed. When the water level in the container is lowered, the floater 14 moves downwards under the action of the gravity of the floater, the lever 15 moves downwards to open the damping hole 13, the control diaphragm 11 is opened, the water in the backpressure cavity 8 enters the water outlet pipe 4 to realize the pressure relief of the backpressure cavity 8, and the water in the water inlet pipe 3 pushes the valve clack 6 to inject water into the container again. The utility model discloses a valve clack 6 and diaphragm 7 connection structure of independent valve body 1, stereoplasm, by the pressure in float 14 control diaphragm 7's back pressure chamber 8 in the float room 2, utilize differential principle to make diaphragm 7 promote valve clack 6 and close, the bore of inlet tube 3 and outlet pipe 4 is unrestricted, can satisfy large-traffic demand, can reach sealed requirement between valve clack 6 of stereoplasm and the inlet tube 3 simultaneously, the phenomenon of leaking can not appear.

And a pressure regulating spring 16 is arranged between the diaphragm 7 and the end cover 5. The pressure regulating spring 16 functions to regulate the back pressure.

A spring seat 17 is arranged on the pressure regulating spring 16, a guide needle 18 is fixed on the spring seat 17, and the guide needle 18 is inserted into the central hole 9. The guide pin 18 plays a guiding role to prevent the pressure regulating spring 16 from being inclined.

The end cover 5 is connected with the valve body 1 through a bolt 19. The end cover 5 is convenient to disassemble and assemble.

The above-mentioned embodiments can not be regarded as the limitations of the present invention, and any float-type water control valve with any structure can be used in the improvement of the present invention, and any product identical to the spirit and substance of the present invention should be regarded as being within the protection scope of the present invention.

Claims

1. The utility model provides a heavy-calibre water control valve, includes valve body (1) and float chamber (2), is equipped with inlet tube (3) and outlet pipe (4) on valve body (1), its characterized in that: the valve is characterized in that an end cover (5) is connected to the valve body (1), the water inlet pipe (3) extends into the valve body (1) and corresponds to the end cover (5), a valve clack (6) and a diaphragm (7) are installed between the water inlet pipe (3) and the end cover (5), the valve clack (6) is composed of a hard valve clack body (61) and an end face sealing gasket (62), the hard valve clack body (61) is fixed to the diaphragm (7), the end face sealing gasket (62) is embedded in one end of the hard valve clack body (61) and corresponds to the extending end of the water inlet pipe (3), the diaphragm (7) is clamped between the valve body (1) and the end cover (5), a back pressure cavity (8) is formed between the diaphragm (7) and the end cover (5), and center holes (9) communicated with the back pressure cavity (8) are formed in the hard valve clack body (61); the upper end of float chamber (2) is equipped with control chamber (10), is equipped with control diaphragm (11) in control chamber (10), internal channel (12), control chamber (10) on back pressure chamber (8) through end cover (5) communicate with each other with outlet pipe (4), and control diaphragm (11) below is equipped with damping hole (13), is equipped with float (14) in float chamber (2), and float (14) are corresponding with control lever (15), can promote lever (15) shutoff damping hole (13) when float (14) rise, makes control diaphragm (11) shutoff control chamber (10) in order to block the passageway between back pressure chamber (8) and outlet pipe (4).

2. The heavy-calibre water control valve of claim 1, wherein: and a pressure regulating spring (16) is arranged between the diaphragm (7) and the end cover (5).

3. The large bore water control valve of claim 2, wherein: the pressure regulating spring (16) is provided with a spring seat (17), a guide needle (18) is fixed on the spring seat (17), and the guide needle (18) is inserted into the central hole (9).

4. A large bore water control valve as claimed in claim 1, 2 or 3, wherein: the end cover (5) is connected with the valve body (1) through a bolt (19).