CN116464797A - Rain valve with pressure regulating function - Google Patents

Abstract

The application discloses take deluge valve of pressure regulating function relates to deluge valve field, and it includes first valve body, be equipped with water supply chamber, pressure chamber and apopore in the first valve body, first valve body is located the outside of pressure chamber and is provided with first valve gap, first valve body is located the pressure intracavity and is provided with the diaphragm for control water supply chamber and the intercommunication of apopore, through the delivery pipe intercommunication between pressure chamber and the water supply chamber, water supply chamber and water supply facility intercommunication, apopore and system pipe network intercommunication, be provided with communicating pipe on the first valve body, the one end and the pressure chamber intercommunication of communicating pipe, the other end and the apopore intercommunication of communicating pipe, be provided with the pressure regulating pilot valve on the communicating pipe. The water pressure in the water outlet cavity is adjusted, and damage to the rear-end water spraying equipment caused by overlarge water supply side pressure is prevented.

Description

Rain valve with pressure regulating function

Technical Field

The application relates to the field of deluge valves, in particular to a deluge valve with a pressure regulating function.

Background

The deluge valve is a control valve for automatically supplying water by controlling a fire water supply pipeline, is used for connecting water supply facilities (a fire water pump, a fire water tank and the like) and a system pipe network, and can be opened in an electric, hydraulic, pneumatic and mechanical mode.

The deluge valve comprises a water supply cavity, a pressure cavity and a water outlet cavity, and in a quasi-working state, the pressure cavity is communicated with a water supply side to provide water pressure, so that the pressure balance of the water supply cavity is maintained. The pressure cavity is connected with the pressure release pipeline, and when the conflagration takes place, the pressure release pipeline is opened, and pressure cavity waterproof pressure release is greater than pressure cavity this moment, and the balance of diaphragm is broken, and then is in open condition, realizes the intercommunication of water supply cavity and play water cavity, and the water of water supply side gets into the system pipe network from the play water cavity, carries out the action of putting out a fire.

When the pressure cavity is depressurized, the diaphragm is in a fully opened state, and the water pressure at one side of the water supply cavity and one side of the water outlet cavity is basically kept stable. And if the water supply side pressure changes, the pressure of the system pipe network side changes. In practice, the water spraying devices connected to the system pipe network side include water spraying devices with different pressure specifications, if the water supply side pressure is larger, water spraying devices with larger pressure specifications are adapted, and if the water supply side pressure is smaller, water spraying devices with smaller pressure specifications are adapted.

If the water pressure entering the system pipe network side exceeds the maximum pressure born by the water spraying equipment, the water spraying equipment is extremely easy to damage.

Disclosure of Invention

In order to realize the pressure adjustment to the water outlet cavity for the pressure of system pipe network side is in the bearing range of water spraying equipment, guarantees water spraying equipment's normal use, this application provides a rain valve of area pressure regulating function.

The application provides a take deluge valve of pressure regulating function adopts following technical scheme:

the utility model provides a take deluge valve of pressure regulating function, includes first valve body, be equipped with water supply chamber, pressure chamber and apopore in the first valve body, first valve body is located the outside of pressure chamber and is provided with first valve gap, first valve body is located the pressure chamber and is provided with the diaphragm for control water supply chamber and the intercommunication of apopore, through the delivery pipe intercommunication between pressure chamber and the water supply chamber, water supply chamber and water supply facility intercommunication, apopore and system pipe network intercommunication; the first valve body is provided with a communicating pipe, one end of the communicating pipe is communicated with the pressure cavity, the other end of the communicating pipe is communicated with the water outlet cavity, the communicating pipe is provided with a pressure regulating pilot valve, the pressure regulating pilot valve comprises a second valve body and a second valve cover arranged on the second valve body, a valve core is arranged in the second valve body in a lifting mode, a driving piece for driving the valve core to lift is arranged on the second valve cover, the driving piece is connected with the valve core through an elastic piece, a water inlet and a water outlet are arranged on the second valve body, and a valve block for controlling the communication of the water inlet and the water outlet is arranged on the lower side of the valve core; when the valve core drives the valve block to descend, the water inlet is communicated with the water outlet; the valve body is internally provided with a movable gap for lifting the valve core, the bottom of the movable gap is communicated with the water outlet, the water inlet is communicated with one side of the pressure cavity, the water outlet is communicated with one side of the water outlet cavity, and a balance valve is arranged on one side, close to the pressure cavity, of the communicating pipe, which is positioned on the pressure regulating pilot valve.

Through adopting above-mentioned technical scheme, when the conflagration is happened, the balanced valve is opened, the water in the pressure chamber is got into the pressure regulating pilot valve from communicating pipe at this moment, utilize driving piece drive case to move downwards in advance, the valve piece removes, make water inlet and delivery port intercommunication, after the water in the pressure chamber passes through the pressure regulating pilot valve, the water pressure in the pressure chamber is less than water supply chamber pressure, the diaphragm removes this moment, water supply chamber and play water chamber intercommunication, the water in the play water chamber can get into the pressure regulating pilot valve from the delivery port, in the continuous water draining process of pressure chamber, the aperture of diaphragm becomes progressively greater, the pressure of play water chamber also increases gradually thereupon, after the water pressure of play water chamber reaches a definite value, the water pressure is greater than the pressure of elastic component, at this moment water gets into the clearance, the valve piece is moved in the top, make it rise, drive valve piece makes water inlet and delivery port close, at this moment the diaphragm stops moving, the water pressure of play water chamber tends to be stable. In addition, the moving distance of the valve core can be adjusted through the driving piece, namely, the pressure of the elastic piece is changed, the pressure of the water outlet cavity is also increased along with the valve core until the valve core is jacked, the pressure adjusting pilot valve is closed, namely, the adjustment and change of the lateral pressure of the water outlet cavity are realized, the requirements of different scenes on the water pressure can be met, the water pressure of the water outlet cavity can be adjusted, and the water spraying equipment is adapted, so that damage to water spraying facilities caused by overlarge water pressure of the water supply side can be prevented.

Preferably, the water supply pipe is communicated with a drain pipe, one end of the drain pipe, which is far away from the water supply pipe, is provided with a water outlet, and one side of the drain pipe, which is close to the water outlet, is provided with a pneumatic valve; the drain pipe is communicated with the balance valve and used for controlling the opening and closing of the balance valve, and the communicating part is positioned on one side, close to the water supply pipe, of the pneumatic valve on the drain pipe.

By adopting the technical scheme, in the closed state of the shower valve, the pneumatic valve enables the two sides of the drain pipe not to be communicated, at the moment, one side of the drain pipe close to the water supply pipe is full of water, at the moment, the water pressure can enable the balance valve to be closed, namely, the two sides of the communicating pipe are not communicated; when a fire disaster occurs, the pneumatic valve loses air, water in the drain pipe can be discharged from the drain outlet, namely the water pressure at the balance valve is reduced, and the balance valve is opened at the moment, so that the opening and pressure regulating functions of the deluge valve can be realized.

Preferably, the pipe diameter ratio of the communicating pipe to the drain pipe is 3:1, and the pipe diameter of the water supply pipe is the sum of the pipe diameters of the communicating pipe and the drain pipe.

Through adopting above-mentioned technical scheme, when this deluge valve during operation, the pipe diameter of communicating pipe is 3:1 with the pipe diameter ratio of drain pipe, the water in the pressure chamber can mostly concentrate entering communicating pipe and pass through the pressure regulating pilot valve this moment, pressure release steady voltage, after the export chamber pressure is stable, the pressure regulating pilot valve is closed, the delivery pipe can continue to supply water to the pressure intracavity this moment, and the drain pipe continues the drainage, but because the pipe diameter of delivery pipe is greater than the drain pipe, consequently, the water pressure grow of pressure chamber, the diaphragm aperture reduces, the pressure of play water cavity diminishes this moment, the pressure regulating pilot valve is opened, repeat above-mentioned action, last the shutoff, the pressure regulating pilot valve is carried out dynamic change all the time promptly, the pressure of export chamber is in dynamic balance.

Preferably, the communicating pipe is further communicated with a water drain pipe, a water drain port is formed on one side, far away from the communicating pipe, of the water drain pipe, the water drain pipe is located on one side, close to the pressure cavity, of the balance valve, and a manual valve is arranged on the water drain pipe.

Through adopting above-mentioned technical scheme, when fire extinguishing systems needs emergent start-up, improves and opens efficiency, and the usable manual valve is manual opens the bleeder, and the water in the pressure chamber can follow the bleeder and follow the bleeder discharge this moment, and the diaphragm can be in full open state, realizes the release of fire fighting water, can be used to emergent situation.

Preferably, the two pressure chambers are symmetrically arranged on the first valve body, a connecting pipe is arranged on the first valve body and used for communicating the two pressure chambers, and one end of the connecting pipe is communicated with a part of the communicating pipe between the balance valve and the manual valve.

Through adopting above-mentioned technical scheme, the pressure chamber is provided with two, compares the single chamber, has bigger flow area, and traditional single chamber drenches the valve increase flow area, generally increases the overall dimension that drenches the valve for the pressure chamber increases, needs the size of increase diaphragm simultaneously, and manufacturing cost is higher, and the diaphragm size is bigger, and the life-span of diaphragm can reduce thereupon, adopts two chambeies, and overall dimension is less, has reduced holistic manufacturing cost, and life is longer.

Preferably, the driving piece is a screw rod, the screw rod is in threaded connection with the second valve cover, and the end part of the screw rod is connected with the elastic piece.

Through adopting above-mentioned technical scheme, rotate the screw rod, realize the removal of elastic component, can realize the lift removal of case, and then drive the removal of valve piece, realize opening of pressure regulating pilot valve, and the screw rod decline distance is bigger, the greater the pressure that the elastic component receives, want to push up the case and make the pressure of the water intracavity that pressure regulating pilot valve closed become equally big.

Preferably, the elastic piece is arranged as a first spring, one end of the first spring is connected with the screw rod, and the other end of the first spring is connected with the valve core.

Through adopting above-mentioned technical scheme, when the screw rod rotates, under the compression effect of first spring, drive the case and move down, can make the pressure regulating pilot valve open, when the water pressure of play water chamber department is greater than the elasticity of first spring, the case rises this moment, can close the pressure regulating pilot valve.

Preferably, a communicating cavity is formed at the bottom of the second valve body, the communicating cavity is located below the water inlet and the water outlet, a communicating port communicated with the water inlet is formed at the upper side of the communicating cavity, the communicating cavity is communicated with the water outlet, and the valve block is arranged in the communicating cavity in a lifting mode and used for blocking the communicating port.

Through adopting above-mentioned technical scheme, when the valve piece moves downwards, the intercommunication mouth makes water inlet and delivery port intercommunication, realizes opening of pressure regulating pilot valve, and the water pressure pushes up the valve core and upwards moves when the play water intracavity for the valve piece is blocked up in intercommunication mouth department, realizes closing of pressure regulating pilot valve.

Preferably, a second spring is arranged at the bottom of the communication cavity along the vertical direction, one end of the second spring is connected with the second valve body, and the other end of the second spring is connected with the valve block.

By adopting the technical scheme, the second spring is utilized to apply upward force to the valve block, so that the valve block is abutted against the communication port and is more tightly attached to the communication port, and the tightness is improved; the cooperation first spring helps making the valve piece can slowly open and close, improves holistic life.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pressure of the outlet cavity is regulated by the deluge valve by utilizing the pressure regulating pilot valve, so that the pressure of the outlet cavity is matched with the rated water pressure of the water spraying equipment at the system pipe network side, namely, the water spraying equipment can be matched no matter the water pressure of the water supply side is more than a few, namely, the deluge valve improves the suitability of water supply facilities and the rear-end water spraying equipment; the pressure of the water outlet cavity is utilized to control the opening and closing of one side of the deluge valve, so that the accurate control of the pressure of the water outlet cavity can be realized;

2. the two-chamber type rain valve is adopted, so that the flow area is increased, compared with a single-chamber type rain valve, the whole size is smaller, the transportation is convenient, the number of the diaphragms is two, the diaphragm area is smaller, in practice, the larger the diaphragm area is, the larger the damage is caused when the diaphragm is in a bubbling state, namely, the two diaphragms are adopted, the size of the diaphragms is reduced, and the service life of the diaphragms is prolonged;

3. the pipe diameter ratio of the communicating pipe to the drain pipe is 3:1, water in the pressure cavity is ensured to flow through the pressure regulating pilot valve from the communicating pipe for pressure relief, so that the pressure regulating function is realized, the pipe diameter of the corresponding water supply pipe is the sum of the pipe diameters of the communicating pipe and the pressure regulating pilot valve, when the pressure regulating pilot valve is closed, water in the water inlet cavity can continuously enter the pressure cavity, the opening degree of the diaphragm is reduced, the pressure of the water outlet cavity is reduced along with the opening degree of the diaphragm, the pressure of the first spring is greater than the pressure of the water outlet cavity, the pressure reducing pilot valve is opened again for pressure relief, the pressure of the water outlet cavity is increased again until the pressure reducing pilot valve is closed, and the pressure of the water outlet cavity is always in dynamic balance for a long time.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present application;

FIG. 2 is a cross-sectional view of an embodiment of the present application;

FIG. 3 is a cross-sectional view of a pressure regulating pilot valve in an embodiment of the present application.

Reference numerals: 1. a first valve body; 11. a water supply chamber; 12. a pressure chamber; 121. a membrane; 13. a water outlet cavity; 14. a connecting pipe; 2. a first valve cover; 3. a water supply pipe; 4. a communicating pipe; 41. a balancing valve; 5. a pressure regulating pilot valve; 51. a second valve body; 511. a water inlet; 512. a water outlet; 513. a clearance gap; 514. a communication port; 515. a receiving groove; 52. a second valve cover; 521. lifting gaps; 6. a drain pipe; 61. a water outlet; 62. a pneumatic valve; 7. a valve core; 71. a second bump; 8. a driving member; 81. a screw; 9. an elastic member; 91. a first spring; 10. a connecting block; 101. a first bump; 20. a communication chamber; 30. a valve block; 301. a third bump; 40. a second spring; 50. a drain pipe; 501. a water discharge port; 502. a manual valve.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a rain valve with a pressure regulating function.

Referring to fig. 1 and 2, the deluge valve with pressure regulating function comprises a first valve body 1, wherein a water supply cavity 11, a pressure cavity 12 and a water outlet cavity 13 are arranged in the first valve body 1, the water supply cavity 11 is communicated with a water supply facility, and the water outlet cavity 13 is communicated with water spraying equipment at the side of a system pipe network; the first valve body 1 is arranged on the outer side of the pressure cavity 12, a first valve cover 2 is arranged in the pressure cavity 12, a diaphragm 121 is arranged in the pressure cavity 12, and the diaphragm 121 is used for controlling the communication between the water supply cavity 11 and the water outlet cavity 13. The water supply cavity 11 is communicated with the pressure cavity 12 through the water supply pipe 3. Normally, water in the water supply cavity 11 enters the pressure cavity 12 from the water supply pipe 3, and the water pressures at two sides of the diaphragm 121 are the same, namely the diaphragm 121 reaches balance, so that the water supply cavity 11 and the water outlet cavity 13 are closed.

Be provided with communicating pipe 4 on the first valve body 1, communicating pipe 4 one end and first valve gap 2 intercommunication, promptly with pressure chamber 12 intercommunication, communicating pipe 4's the other end goes out water cavity 13 intercommunication, installs the pressure regulating pilot valve 5 that adjusts the water pressure in the water cavity 13 on the communicating pipe 4, and communicating pipe 4 is located pressure regulating pilot valve 5 and is close to first valve gap 2 one side and installs balanced valve 41, and this balanced valve 41 opens and shuts through the water pressure control pipeline, is conventional technology, and is not repeated here.

One end of the water supply pipe 3 is communicated with the water supply cavity 11 of the first valve body 1, the other end of the water supply pipe 3 is communicated with the first valve cover 2 through a tee joint, namely is communicated with the pressure cavity 12, a water drain pipe 6 is further communicated on the tee joint, a water outlet 61 is formed at the other end of the water drain pipe 6, a pneumatic valve 62 is arranged on one side, close to the water outlet 61, of the water drain pipe 6, the water drain pipe 6 is connected with the balance valve 41 through the tee joint, and water pressure in the water drain pipe 6 is used for controlling the opening and closing of the balance valve 41; the junction of the drain pipe 6 and the balance valve 41 is located on the side of the pneumatic valve 62 near the first valve cover 2.

The pipe diameter ratio of communicating pipe 4 and drain pipe 6 is 3:1, and the pipe diameter of delivery pipe 3 is the pipe diameter sum of communicating pipe 4 and drain pipe 6, and in this application, the pipe diameter of delivery pipe 3 is 4mm, and the pipe diameter of communicating pipe 4 is 3mm, and the pipe diameter of drain pipe 6 is 1mm. The pipe diameter of the communicating pipe 4 is far larger than that of the drain pipe 6, so that the water in the pressure cavity 12 is ensured to be concentrated and discharged from the communicating pipe 4; and the pipe diameter of the water supply pipe 3 is far greater than the pipe diameter of the water discharge pipe 6, and after the pressure regulating pilot valve 5 is closed, the pressure of water entering the pressure cavity 12 is greater than the pressure in the water discharge pipe 6, namely the water discharge pipe 6 can not cause the pressure cavity 12 to release pressure even if water is continuously discharged.

When a fire disaster occurs, the pneumatic valve 62 loses air, at the moment, water in the drain pipe 6 is discharged from the drain port 61, the junction of the drain pipe 6 and the balance valve 41 loses pressure, the balance valve 41 is opened, water in the pressure cavity 12 enters the pressure regulating pilot valve 5 from the communicating pipe 4 for pressure relief, the opening degree of the diaphragm 121 gradually increases, the water pressure of the water outlet cavity 13 gradually increases until the preset water pressure is reached, the pressure regulating pilot valve 5 is closed for pressure relief, and the diaphragm 121 stops acting, namely the stabilization of the water pressure of the water cavity 13 is realized. When the conventional deluge valve is opened, the diaphragm 121 is in a fully opened state, and the water pressure directly becomes maximum, so that the opening degree of the diaphragm 121 cannot be adjusted and the water pressure cannot be adjusted and stabilized.

Referring to fig. 1 and 3, the pressure regulating pilot valve 5 comprises a second valve body 51 and a second valve cover 52 mounted on the second valve body 51, a water inlet 511 and a water outlet 512 are formed on the second valve body 51, the water inlet 511 is communicated with the communicating pipe 4, the water outlet 512 is communicated with the water outlet cavity 13, a valve core 7 is arranged in the second valve body 51 in a lifting manner, a driving piece 8 for driving the valve core 7 to lift is arranged on the second valve cover 52, the driving piece 8 is arranged as a screw 81, the screw 81 is vertically arranged and is in threaded connection with the second valve cover 52, an elastic piece 9 is arranged between the screw 81 and the valve core 7, and the elastic piece 9 is arranged as a first spring 91; a lifting gap 521 is formed in the second valve cover 52, a connecting block 10 is arranged in the lifting gap 521 in a lifting manner, the lower end of the screw 81 is in interference fit with the connecting block 10, and a first lug 101 is integrally formed on the lower side of the connecting block 10; a movable gap 513 communicated with the lifting gap 521 is formed in the second valve body 51, the valve core 7 is arranged in the movable gap 513 in a lifting manner, a second lug 71 is integrally formed on the upper side of the valve core 7, the first spring 91 is vertically arranged, the upper side of the first spring 91 is sleeved on the periphery of the first lug 101, and the lower side of the first spring 91 is sleeved on the periphery of the second lug 71; the bottom of the movable gap 513 communicates with the water outlet 512.

The bottom of the second valve body 51 is provided with a communication cavity 20, the communication cavity 20 is located below the water inlet 511 and the water outlet 512, a communication port 514 communicated with the water inlet 511 is formed on the upper side of the second valve body 51 located on the communication cavity 20, the communication cavity 20 is communicated with the water outlet 512, a valve block 30 is arranged in the communication cavity 20 in a lifting mode, the valve block 30 is connected with the valve core 7 through a valve rod, the valve block 30 ascends to block the communication port 514, the valve block 30 descends, the communication port 514 is opened, and the water inlet 511 is communicated with the water outlet 512. The second valve body 51 is located at the bottom of the communication cavity 20, a containing groove 515 is formed, a second spring 40 is contained in the containing groove 515, a third protruding block 301 is integrally formed at the lower side of the valve block 30, and the upper side of the second spring 40 is sleeved at the peripheral side of the third protruding block 301.

The screw 81 is screwed in advance so that the valve block 30 is separated from the communication port 514, and at this time, the first spring 91 is in a compressed state, and a certain pressure is applied, and this pressure value is set to F1. When the balance valve 41 is opened, water in the pressure cavity 12 flows from the water inlet 511 to the water outlet 512 for pressure relief, the opening of the diaphragm 121 gradually increases, the pressure of the water outlet cavity 13 gradually increases, water in the water outlet cavity 13 enters the movable gap 513 from the water outlet 512, the water pressure of the water outlet cavity 13 is set to be F2, when F2 is greater than F1, the valve core 7 moves upwards to drive the valve block 30 to move upwards, the communication port 514 is closed, and the water pressure of the water outlet cavity 13 is stable. However, the water supply chamber 11 continues to supply water into the pressure chamber 12, at this time, the opening of the diaphragm 121 gradually becomes smaller, so that the water pressure of the water outlet chamber 13 decreases until F2 is smaller than F1, the valve core 7 descends, the valve block 30 is separated from the communication port 514, the pressure regulating pilot valve 5 is opened, the pressure chamber 12 is depressurized, the opening of the diaphragm 121 again becomes larger, the pressure of the water outlet chamber 13 becomes larger along with the opening of the diaphragm 121 until F2 is larger than F1, and the pressure regulating pilot valve 5 is closed. In the operation process of the deluge valve, the pressure regulating pilot valve 5 is always in a state of not being opened and closed, so that the pressure of the water outlet cavity 13 is in dynamic balance. By changing the pressure value F1 of the first spring 91, the pressure F2 of the water outlet chamber 13 can be adjusted.

Referring to fig. 1 and 2, the communicating pipe 4 is further connected to a drain pipe 50, a drain port 501 is formed on a side of the drain pipe 50 away from the communicating pipe 4, and a connection point between the drain pipe 50 and the communicating pipe 4 is located on a side of the balance valve 41 away from the pressure regulating pilot valve 5. A manual valve 502 is mounted on the drain pipe 50. When the deluge valve needs to be opened in an emergency, the manual valve 502 is opened manually, and the pressure cavity 12 is decompressed, so that the deluge valve can be opened quickly.

In addition, in the present application, two pressure chambers 12 are symmetrically arranged, a connecting pipe 14 is arranged on the first valve body 1, one end of the connecting pipe 14 is communicated with the communicating pipe 4, the other end of the connecting pipe is communicated with the other pressure chamber 12, and a communication position between the connecting pipe 14 and the communicating pipe 4 is located between the balance valve 41 and the manual valve 502. The two pressure chambers 12 are arranged, compared with a single chamber, the single-way shower valve has larger flow area, if the one-way shower valve is used for realizing the flow of larger water quantity, the size of the pressure chamber 12 needs to be increased, the size of the diaphragm 121 is increased, and meanwhile, the whole size of the shower valve needs to be increased; the double-cavity deluge valve in the application has smaller overall size change, lower manufacturing cost, smaller size of the two diaphragms 121 and longer service life.

The implementation principle of the deluge valve with the pressure regulating function is as follows: screwing the screw 81 to adjust the compression amount of the first spring 91, and normally, opening the pressure regulating pilot valve 5; when a fire disaster occurs, the pneumatic valve 62 loses air, water in the water drain pipe 6 is discharged from the water drain port 61, the water in the water drain pipe 6 loses pressure, the balance valve 41 is opened, water in the pressure cavity 12 enters the pressure regulating pilot valve 5 from the communicating pipe 4 and is discharged from the water outlet 512 for pressure relief, at the moment, the opening degree of the diaphragm 121 is gradually increased, the pressure at the water outlet cavity 13 side is gradually increased until the pressure is larger than the compression force of the first spring 91, at the moment, the valve core 7 drives the valve block 30 to move upwards, the communicating port 514 is closed, and the pressure cavity 12 stops pressure relief; since the water supply cavity 11 is always supplying water to the pressure cavity 12, that is, the opening of the diaphragm 121 is reduced again, the pressure of the water outlet cavity 13 is reduced until the pressure is smaller than that of the first spring 91, the pressure regulating pilot valve 5 is opened, and the operation is repeated, so that the water pressure of the water outlet cavity 13 is dynamically balanced; through the deluge valve of this application, adjust water pressure, can make water spraying equipment more easily adapt to water supply facilities, and help preventing because of water supply side pressure is too big, lead to water spraying equipment damage.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. The utility model provides a take deluge valve of pressure regulating function, includes first valve body (1), be equipped with water supply chamber (11), pressure chamber (12) and play water chamber (13) in first valve body (1), the outside that first valve body (1) are located pressure chamber (12) is provided with first valve gap (2), first valve body (1) are located pressure chamber (12) and are provided with diaphragm (121) for control water supply chamber (11) and play water chamber (13) intercommunication, through delivery pipe (3) intercommunication between pressure chamber (12) and water supply chamber (11), water supply chamber (11) and water supply facility intercommunication, play water chamber (13) and system pipe network intercommunication, its characterized in that: the novel valve is characterized in that a communicating pipe (4) is arranged on the first valve body (1), one end of the communicating pipe (4) is communicated with the pressure cavity (12), the other end of the communicating pipe is communicated with the water outlet cavity (13), a pressure regulating pilot valve (5) is arranged on the communicating pipe (4), the pressure regulating pilot valve (5) comprises a second valve body (51) and a second valve cover (52) arranged on the second valve body (51), a valve core (7) is arranged in the second valve body (51) in a lifting mode, a driving piece (8) for driving the valve core (7) to lift is arranged on the second valve cover (52), the driving piece (8) is connected with the valve core (7) through an elastic piece (9), a water inlet (511) and a water outlet (512) are arranged on the second valve body (51), and a valve block (30) for controlling the water inlet (511) and the water outlet (512) to be communicated is arranged on the lower side of the valve core (7). When the valve core (7) drives the valve block (30) to descend, the water inlet (511) is communicated with the water outlet (512); a movable gap (513) for lifting the valve core (7) is formed in the second valve body (51), the bottom of the movable gap (513) is communicated with the water outlet (512), the water inlet (511) is communicated with one side of the pressure cavity (12), the water outlet (512) is communicated with one side of the water outlet cavity (13), and a balance valve (41) is arranged on one side, close to the pressure cavity (12), of the pressure regulating pilot valve (5) of the communicating pipe (4).

2. The deluge valve with pressure regulating function according to claim 1, characterized in that: a drain pipe (6) is communicated with the water supply pipe (3), a drain outlet (61) is formed at one end, far away from the water supply pipe (3), of the drain pipe (6), and a pneumatic valve (62) is arranged at one side, close to the drain outlet (61), of the drain pipe (6); the water draining pipe (6) is communicated with the balance valve (41) and used for controlling the opening and closing of the balance valve (41), and the communicating position is positioned on one side, close to the water supply pipe (3), of the pneumatic valve (62) on the water draining pipe (6).

3. The deluge valve with pressure regulating function according to claim 2, characterized in that: the pipe diameter ratio of the communicating pipe (4) to the drain pipe (6) is 3:1, and the pipe diameter of the water supply pipe (3) is the sum of the pipe diameters of the communicating pipe (4) and the drain pipe (6).

4. The deluge valve with pressure regulating function according to claim 1, characterized in that: the water drain pipe (50) is further communicated with the communicating pipe (4), a water drain port (501) is formed in one side, far away from the communicating pipe (4), of the water drain pipe (50), the water drain pipe (50) is located on one side, close to the pressure cavity (12), of the balance valve (41), and a manual valve (502) is arranged on the water drain pipe (50).

5. The deluge valve with pressure regulating function according to claim 4, characterized in that: the pressure chambers (12) are symmetrically arranged on the first valve body (1), connecting pipes (14) are arranged on the first valve body (1), the connecting pipes (14) are used for communicating the two pressure chambers (12), and one ends of the connecting pipes (14) are communicated with a part, located between the balance valve (41) and the manual valve (502), of the communicating pipe (4).

6. The deluge valve with pressure regulating function according to claim 1, characterized in that: the driving piece (8) is arranged to be a screw rod (81), the screw rod (81) is in threaded connection with the second valve cover (52), and the end part of the screw rod (81) is connected with the elastic piece (9).

7. The deluge valve with pressure regulating function according to claim 5, characterized in that: the elastic piece (9) is arranged to be a first spring (91), one end of the first spring (91) is connected with the screw rod (81), and the other end of the first spring (91) is connected with the valve core (7).

8. The deluge valve with pressure regulating function according to claim 1, characterized in that: the bottom of second valve body (51) is formed with intercommunication chamber (20), intercommunication chamber (20) are located the below of water inlet (511) and delivery port (512), the upside of intercommunication chamber (20) is formed with intercommunication mouth (514) with water inlet (511) intercommunication, intercommunication chamber (20) and delivery port (512) intercommunication, valve piece (30) go up and down to set up in intercommunication chamber (20) for shutoff intercommunication mouth (514).

9. The deluge valve with pressure regulating function of claim 7, characterized in that: the second valve body (51) is located the bottom of intercommunication chamber (20) and is provided with second spring (40) along vertical direction, second spring (40) one end is connected with second valve body (51), the other end of second spring (40) is connected with valve piece (30).