CN215313236U

CN215313236U - Pneumatic liquid spray valve

Info

Publication number: CN215313236U
Application number: CN202121347995.0U
Authority: CN
Inventors: 钟坤; 杜忠华; 姜原; 郭晓双; 王天歌
Original assignee: Nanjing Yunzhijing Electromechanical Technology Co ltd
Current assignee: Nanjing Yunzhijing Electromechanical Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-28
Anticipated expiration: 2031-06-17

Abstract

The utility model relates to a pneumatic liquid spray valve which comprises a valve body, a nozzle, a low-pressure air inlet, a high-pressure air inlet, a valve seat and a piston. A cavity with a preset space and a flow passage with a preset trend are arranged in the valve body; the nozzle is arranged on the valve body, can be detached and replaced, and can adjust the spraying angle and range within a preset range; the low-pressure air inlet is arranged at the bottom of the valve body and is communicated with a low-pressure air source. The high-pressure air inlet is arranged at the bottom of the valve body and is communicated with a high-pressure air source; the valve seat is fixed on the valve body, limited by the upper surface of the valve body and used for adjusting the high-pressure air inlet flow. The piston is movably arranged in the valve body and is controlled to open and close by low-pressure air inlet to open the high-pressure flow passage. The nozzle is provided with a gas cavity and a liquid cavity inside, and the head part is provided with a mixing tank, so that gas and liquid are mixed fully, and the atomization effect is good. The inclination angle of the liquid spraying holes of the nozzle is large, the liquid spraying holes and the gas spraying holes are uniformly distributed, and the aperture proportion is reasonable, so that the spraying range is large.

Description

Pneumatic liquid spray valve

Technical Field

The utility model relates to an atomizing valve, in particular to a pneumatic liquid atomizing valve.

Background

The spray valve is a device for converting flowing liquid into small water drops or water mist to be sprayed, and is widely applied to production and life of die spraying, automobile cleaning, fire fighting, fire prevention and the like at present.

The existing spray valves on the market currently have the following disadvantages: 1) the spraying effect is poor: the design of a spray head structure and a gas and liquid path is unreasonable, the gas and liquid ratio is unscientific, the mixture is insufficient, the spraying angle and the spraying range are small, the spraying distribution is uneven, the spraying state is unstable, the spraying pressure is not controlled in place, and the atomization effect is poor. 2) The consumption of the spray head is fast: the structural design of the internal mesh screen is unreasonable, so that the spray head is easy to block and the like, and the replacement frequency of the spray head is high.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides a pneumatic liquid spraying valve, adopt low pressure air supply control high pressure air inlet piston switching, gas circuit liquid path runner independent distribution, can dismantle spherical porous nozzle, the structure of nozzle end mixture gas-liquid, this kind of structure makes injection state stable through adjusting intake flow, the spraying distributes evenly, the design of hemisphere porous nozzle can be when using arbitrary rotation angle, adjust injection angle and spray range, the convenient dismantlement of screw connection, do not influence other structures, and be suitable for multiple liquid, the selected materials adopts the high strength aluminum alloy, the problem that current product easily blocks up, easy wearing and tearing, the loss is big has been solved.

The technical scheme is as follows: a pneumatic liquid spray valve comprises a valve body, a nozzle, a low-pressure air inlet, a high-pressure air inlet, a valve seat and a piston. The valve body is internally provided with a cavity with a preset space and a flow passage with a preset trend. The nozzle is arranged on the valve body, can be detached and replaced, and can adjust the spraying angle and range within a preset range; the low-pressure air inlet is arranged at the bottom of the valve body and is communicated with a low-pressure air source; the high-pressure air inlet is arranged at the bottom of the valve body and is communicated with a high-pressure air source; the valve seat is fixed on the valve body, limited by the upper surface of the valve body and used for adjusting the high-pressure air inlet flow; the piston is movably arranged in the valve body, and the low-pressure air outlet vents air to control the opening and closing of the piston.

In a further embodiment, a mixing tank is dug at the upper end of the nozzle, a plurality of liquid spraying holes are arranged at equal intervals along the edge of the bottom of the mixing tank, a gas spraying hole is formed in the center of the nozzle, a gas cavity and a liquid cavity are reserved below the nozzle, and gas and liquid are sprayed out and then mixed and atomized in the mixing tank. The nozzle is fixed on the valve body through the nozzle cover and the first screw so as to be convenient to maintain and replace, and the nozzle cover is made of aluminum alloy materials so as to reduce weight and simultaneously resist corrosion and aging.

In a further embodiment, the bottom of the valve body is provided with a positioning part for positioning and installing the valve body, the positioning part is internally provided with a plurality of water inlets, the water inlets are uniformly distributed in a semicircular shape around the center of the positioning part so as to stagger the air inlet holes at the center, and the periphery of the positioning part is provided with a fourth O-shaped ring which can prevent water leakage.

In a further embodiment, the contact surface of the piston and the valve body is sleeved with at least two sealing rings to prevent air leakage; the piston afterbody cover has the spring, and the spring adopts stainless steel for make the piston reset, and the spring other end meets with the piston cap, and the piston cap passes through the second fix with screw on the valve body, and there are two exhaust holes in the centre, is used for getting rid of and reveals the gas.

In a further embodiment, the valve seat is fixed on the valve body through threaded connection and is limited by the upper surface of the valve body, a fifth O-shaped ring is arranged at the tail of the valve seat, the fifth O-shaped ring is one of preferable examples of a sealing mechanism and plays a role in sealing to prevent gas leakage, a gas inlet channel is arranged at the top of the valve seat to control the flow of high-pressure gas, a sixth O-shaped ring is arranged at the lower end of the valve seat to block the high-pressure gas to enable the high-pressure gas to flow in through the gas inlet channel and flow out through a high-pressure gas outlet, the flow of the gas inlet can be controlled by replacing the valve seats with different diameters, a conducting mechanism is arranged at the joint of the valve body and the nozzle and can be a nozzle rod, a circular channel is arranged in the center of the conducting mechanism and used for transmitting the gas, the nozzle rod is made of stainless steel, the upper end of the nozzle rod is chamfered, and the third O-shaped ring is arranged at the upper end of the valve seat.

Has the advantages that: the utility model can control the flow and pressure of inlet air and liquid according to the actual situation, and radically solves the problems of air pressure and hydraulic fluctuation, unscientific proportioning and the like. The nozzle adopts a structural design of six-hole equal liquid discharge and middle hole air injection, a gas cavity liquid cavity is reserved inside the nozzle, a mixing tank is reserved at the head part of the nozzle, gas and liquid are fully mixed, the atomization effect is good, and the nozzle is suitable for various liquids. The spraying range is large, and the angle is adjustable: the inclination angle of the liquid spraying holes of the nozzle is large, the liquid spraying holes and the gas spraying holes are uniformly distributed, the aperture proportion is reasonable, the spraying range is large, the nozzle is connected with the valve body in a spherical mode, and the angle can be adjusted randomly.

Drawings

Fig. 1 is a schematic structural outline of the valve.

Fig. 2 is a bottom view of the present valve.

Fig. 3 is a sectional view of the valve in a closed state.

Fig. 4 is a sectional view of the valve in the open state.

Fig. 5 is a cross-sectional view of the valve seat of the present valve.

Figure 6 is a view of the low pressure outlet of the present valve.

Figure 7 is a view of the high pressure outlet of the present valve.

The figures are numbered: the gas valve comprises a nozzle 1, a liquid spraying hole 1a, a gas spraying hole 1b, a gas cavity 1c, a liquid cavity 1d, a nozzle cover 2, a valve body 3, a screw hole 3a, a water inlet 3b, a high-pressure gas inlet 3c, a low-pressure gas inlet 3d, a positioning part 3e, a cavity 3f, a cavity 3g, a low-pressure gas outlet 3i, a high-pressure gas outlet 3j, a first screw 4, a valve seat 5, a gas guide hole 5a, a second screw 6, a piston cover 7, a gas outlet 7a, a first O-shaped ring 8, a piston 9, a spring 10, a second O-shaped ring 11, a nozzle rod 12, a third O-shaped ring 13, a fourth O-shaped ring 14, a fifth O-shaped ring 15 and a sixth O-shaped ring 16.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.

This embodiment provides a pneumatic liquid spraying valve, adopt low pressure air supply control high pressure air inlet piston switching, gas circuit liquid path independent distribution, can dismantle spherical porous nozzle, the structure of nozzle end mixture gas-liquid, this kind of structure makes injection state stable through adjusting intake flow, the spraying distributes evenly, the design of hemisphere porous nozzle can be when using arbitrary rotation angle, adjust injection angle and spray range, the convenient dismantlement of screw connection, and do not influence other structures, and be suitable for multiple liquid, the selected materials adopts the high strength aluminum alloy, the problem that current product easily blockked up, the loss is big has been solved. The whole spray valve has the advantages of compact structure, simple structure, easy processing, effective material saving, processing loss reduction and time consumption reduction. The specific technical scheme is as follows:

the pneumatic liquid spray valve includes: the nozzle comprises a nozzle 1, a nozzle cover 2, a valve body 3, a first screw 4, a valve seat 5, a second screw 6, a piston cover 7, a first O-shaped ring 8, a piston 9, a spring 10, a second O-shaped ring 11, a nozzle rod 12, a third O-shaped ring 13, a fourth O-shaped ring 14, a fifth O-shaped ring 15 and a sixth O-shaped ring 16, wherein the nozzle 1 is provided with a liquid spraying hole 1a, a gas spraying hole 1b, a gas cavity 1c and a liquid cavity 1d, the bottom of the valve body 3 is provided with a screw hole 3a, a water inlet 3b, a high-pressure gas inlet 3c, a low-pressure gas inlet 3d, a positioning part 3e, a cavity 3f, a cavity 3g, a low-pressure gas outlet 3i and a high-pressure gas outlet 3j, a gas guide hole 5a is arranged below the valve seat 5, an exhaust hole 7a is arranged on the piston cover 7, and is characterized in that the gas is fed through the low-pressure gas inlet 3d, the low-pressure gas outlet 3i controls the opening and closing of the piston 9, and the valve seat 5 adjusts the high-pressure gas flow, the liquid path and the gas path are independently distributed, the nozzle 2 adopts a porous distribution and a detachable structure, the spraying angle and the spraying range can be adjusted, and the design can greatly improve the performance of the spray valve.

Nozzle 1 is the aluminum alloy material, is spherical, and 1 upper ends of nozzle have dug the mixing tank, and the tank bottom is opened along the edge has 6 equidistant hydrojet holes 1a, and open at the center has fumarole 1b, and the below is left air cavity 1c and liquid cavity 1d, reaches the mixing atomization in the mixing tank after the gas-liquid blowout. The nozzle 1 is fixed on the valve body 3 through the nozzle cover 2 and the first screw 4 so as to be convenient for maintenance and replacement, and the nozzle cover 2 is made of aluminum alloy materials so as to reduce the weight and simultaneously resist corrosion and aging. The first screw 4 and the second screw 6 are both cylindrical-head socket head cap screws made of stainless steel, are high in strength, are not prone to filament and are easy to pull and twist. The valve body 3 is made of aluminum alloy, the bottom of the valve body is provided with a screw hole 3a and a positioning part 3e for installing and fixing the valve body, 3 water inlets 3b are arranged in the positioning part 3e, the water inlets 3b are uniformly distributed around the semicircular shape, the purpose is to stagger the air inlet holes at the center, and a fourth O-shaped ring 14 is arranged on the periphery of the positioning part 3e and can prevent water leakage. The bottom of the valve body 3 is also provided with a high-pressure air inlet 3c and a low-pressure air inlet 3d which are respectively connected with a high-pressure air source and a low-pressure air source, low-pressure air flows in through the air inlet 3d and flows out from a low-pressure air outlet 3i in the cavity 3f to jack the piston 9, and the high-pressure air inlet 3c is connected with the valve seat 5. The piston rod 9 is made of plastic, the weight is light, the sealing performance is good, a first O-shaped ring 8 and a second O-shaped ring 11 are sleeved on the contact surface of the piston rod and the valve body 3 and used for preventing air leakage and air blowby, a spring 10 is sleeved on the tail portion of the piston and made of stainless steel, the spring 10 is used for enabling the piston to reset, the other end of the spring 10 is connected with a piston cover 7, the piston cover is fixed on the valve body 3 through a second screw 6, and two exhaust holes 7a are formed in the middle of the piston cover and used for removing leaked air. Valve seat 5 passes through threaded connection to be fixed on valve body 3, it is spacing by valve body 3 upper surface, 5 afterbody of valve seat is equipped with fifth O shape circle 15, be used for preventing gas leakage, there is inlet channel 5a at the valve seat top, be used for controlling high-pressure gas flow, sixth O shape circle 16 is equipped with at 5a lower extreme, be used for the separation high-pressure gas, make it flow in through inlet channel 5a, high-pressure gas outlet 3j flows out, can control the inlet flow size through the valve seat of changing different latus rectum, there is nozzle rod 12 valve body and nozzle junction, the center has circular passageway to be used for transmitting gas, nozzle rod 12 is stainless steel, the upper end chamfer, and be equipped with third O shape circle 13.

When the atomizing nozzle is used, a liquid path and a high-low pressure gas source are connected correctly, gas enters from a low-pressure gas outlet 3i to jack up a piston during action, the hydraulic source is started, high-pressure gas flows through the nozzle 1 through 3j, the gas and the liquid flow respectively flow from a nozzle gas cavity 1c, a liquid cavity 1d passes through a gas orifice 1b and a liquid orifice 1a, and the mixture is mixed at the tail end of a mixing tank to achieve atomization.

In conclusion, compared with the prior art, the utility model has the following remarkable effects:

the atomization effect is good, and the method is applicable to various liquids: the utility model can control the inflow and the pressure of the inlet air according to the actual situation, and fundamentally solves the problems of air pressure, water pressure fluctuation, unscientific proportioning and the like. The nozzle adopts a structural design of six-hole equal liquid discharge and middle hole air injection, a gas cavity liquid cavity is reserved inside the nozzle, gas and liquid are fully mixed, the atomization effect is good, and the nozzle is suitable for various liquids.

The spraying range is large, and the angle is adjustable: the inclination angle of the liquid spraying holes of the nozzle is large, the liquid spraying holes and the gas spraying holes are uniformly distributed, so that the spraying range is large, the nozzle is connected with the valve body in a spherical manner, and the angle can be adjusted at will.

The structure is light and handy, workable: the valve body is mainly made of aluminum alloy, so that the weight of a product is reduced, meanwhile, the valve body is compact in structure, simple in shape and easy to process, raw materials can be effectively saved, processing loss is reduced, and time consumption is reduced.

Long service life and easy maintenance: the key elements are made of stainless steel and high-strength aluminum alloy, and the alloy is corrosion-resistant, wear-resistant and long in service life. The nozzle is designed to be easy to disassemble, and the valve does not need to be disassembled and the working hours are saved during later-period replacement and maintenance.

The driving mode is safe and reliable: and the pneumatic driving is adopted, other actuating mechanisms are not needed, and the danger of water and electricity mixing is avoided.

Easy adaptation and popularization: the utility model has the advantages of small volume, light weight, no complex structure, low processing difficulty, high material utilization rate, low cost, stable performance, simple assembly and easy realization of mass use.

As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A pneumatic liquid aerosol valve comprising:

the valve body is internally provided with a cavity with a preset space and a flow channel with a preset trend;

the nozzle is detachably arranged on the valve body, and the spraying angle and range can be adjusted within a preset range;

the low-pressure air inlet is arranged at the bottom of the valve body and communicated with a low-pressure air source;

the high-pressure air inlet is arranged at the bottom of the valve body and communicated with a high-pressure air source;

the valve seat is fixed on the valve body, limited by the upper surface of the valve body and used for adjusting the flow of high-pressure inlet air;

and the piston is movably arranged in the valve body, and is used for discharging air from the low-pressure air outlet and controlling the piston to open and close the high-pressure flow passage.

2. A pneumatic liquid spray valve according to claim 1 wherein: the spray nozzle is characterized in that a mixing tank is dug at the upper end of the spray nozzle, a plurality of liquid spraying holes distributed at equal intervals are formed in the bottom of the mixing tank along the edge, a gas spraying hole is formed in the center of the spray nozzle, a gas cavity and a liquid cavity are reserved below the spray nozzle, and gas and liquid are sprayed out and then mixed and atomized in the mixing tank.

3. A pneumatic liquid spray valve according to claim 1 wherein: the bottom of the valve body is provided with a positioning part for positioning and installing the valve body, and a plurality of water inlets are arranged in the positioning part.

4. A pneumatic liquid spray valve according to claim 1 wherein: a sealing ring is sleeved on the contact surface of the piston and the valve body; the piston afterbody cover is equipped with the spring, the piston lid is installed to one side of valve body, the one end of spring with the piston lid meets.

5. A pneumatic liquid spray valve according to claim 1 wherein: the tail part of the valve seat is provided with a sealing mechanism; and an air inlet channel is arranged at the top of the valve seat.

6. A pneumatic liquid spray valve according to claim 1 wherein: the connection part of the valve body and the nozzle is provided with a conduction mechanism, and the center of the conduction mechanism is provided with a circular channel for transmitting gas.