CN110000021A - A kind of mixed flexible nozzle of second level rotation - Google Patents

Abstract

The present invention relates to a kind of second levels to revolve mixed flexible nozzle.It includes oil pipe, cone valve, tracheae, shell, level-one rotary mixing tube and second level rotary mixing tube that second level, which revolves mixed flexible nozzle, low pressure oil return hole is offered at the top of oil pipe, cone valve is set in oil pipe, boss is formed on cone valve side wall, drainback passage is offered in cone valve, drainback passage is connected with the low pressure oil return hole of oil pipe, is connected at the top of oil pipe bottom and level-one rotary mixing tube, and junction is equipped with the first sealing ring；Joint at the top of level-one rotary mixing tube bottom and second level rotary mixing tube, level-one rotary mixing tube and second level rotary mixing tube junction are formed with the mixed chamber of rotation, level-one rotary mixing tube and second level rotary mixing tube are all set in shell, and second level rotary mixing tube bottom is connected with outer casing bottom, and cover top portion connect and is connected with gas-pipe thread；Tracheae is set with and is fixed on oil pipe lateral wall.Total design rationally, solves the problems, such as to manually adjust, realizes the function of needing soft readjustment flow with power, and enhance atomizing effect, practical.

Description

A two-stage rotary mixing flexible nozzle

technical field

The invention relates to a two-stage rotary mixing flexible nozzle.

Background technique

The fuel nozzle is used to atomize the liquid fuel into fine droplets, evaporate quickly and fully mix with the combustion air to form a natural mixture, and fully burn and release heat under the excitation of ignition energy.

The fuel nozzle mainly adopts the bubble atomization technology. The principle of bubble atomization is: the fuel and the atomizing medium (water vapor or compressed air) generate a large number of oil-packed vapor bubbles through the bubble atomization generator, which are fully mixed in the mixing chamber. After spraying, the blasting atomization is realized by using a higher pressure difference.

At present, the adjustable flow nozzle needs to manually rotate the water spray block to adjust the flow, and some even need to stop work for adjustment, and cannot be adjusted online at any time, which is extremely inconvenient. Under the same flow rate, the nozzle holes of the multi-nozzle structure are smaller and more likely to be blocked.

SUMMARY OF THE INVENTION

The present invention aims to solve the above problems, and provides a two-stage rotary mixing flexible nozzle, the cone valve of which can automatically adjust the opening according to the pressure of the oil in the oil pipe, which not only plays the role of flexibly adjusting the flow, but also plays the role of oil return to save energy Oil; in addition, the primary atomization is carried out through the first-stage rotating mixing tube and the rotating mixing chamber, and the gas and oil are mixed to form a bubble flow, and then the second-stage rotating mixing tube is used for secondary atomization to enhance the atomization effect; the whole structure is designed reasonably , realizes the function of flexibly adjusting the flow according to the power requirements, and enhances the atomization effect, and has strong practicability; the technical solutions adopted are as follows:

A two-stage rotary mixing flexible nozzle, comprising an oil pipe, a cone valve, an air pipe, a casing, a primary rotary mixing pipe and a secondary rotary mixing pipe, a low-pressure oil return hole is opened on the top of the oil pipe, and the cone valve is arranged in the oil pipe , a boss for separating the oil cavity of the oil pipe is formed on the side wall of the cone valve, an oil return channel is opened in the cone valve, the oil return channel is connected with the low pressure oil return hole of the oil pipe, and the bottom of the oil pipe is connected to The top of the first-stage rotary mixing pipe is connected, and a first sealing ring is arranged at the connection; A mixing chamber is formed at the connection, the first-stage mixing pipe and the second-stage mixing pipe are both arranged in the casing, the bottom of the second-grade mixing pipe is connected with the bottom of the casing, and the connection is provided with a third sealing ring; The top of the casing is screwed with the air pipe, and the air pipe is communicated with the inner cavity of the casing; the air pipe is sheathed and fixed on the outer side wall of the oil pipe.

Optionally, two cone surfaces are formed at the bottom of the cone valve, and the cone angle of the upper cone surface is larger than the cone angle of the lower cone surface.

Optionally, the top of the oil pipe is provided with a surplus cavity for facilitating the movement of the poppet valve.

Optionally, a plurality of circumferentially inclined primary air holes are formed on the side wall of the primary swirling mixing pipe, and the swirling mixing chamber is communicated with the trachea through the primary air holes.

Optionally, an upper conical surface and a lower conical surface are formed on the side wall of the first-stage rotating mixing tube, and the cone angle of the upper conical surface is larger than the cone angle of the lower conical surface.

Optionally, the inclination angle of the primary air hole is 30 degrees.

Optionally, the mixing chamber is in the shape of a spindle.

Optionally, the secondary swirling mixing pipe is provided with a plurality of circumferentially inclined secondary air holes, and the output channel of the secondary swirling mixing pipe is communicated with the air pipe through the secondary air holes.

Optionally, the outlet of the output channel of the secondary mixing tube is tapered.

Optionally, a second sealing ring is provided at the threaded connection between the gas pipe and the casing.

Optionally, the oil pipe, the poppet valve, the gas pipe, the casing, the primary mixing pipe and the secondary mixing pipe are all coaxially arranged.

The invention has the following advantages: the poppet valve can automatically adjust the opening according to the pressure of the oil in the oil pipe, which not only plays the role of flexibly adjusting the flow, but also plays the role of returning oil to save oil; The primary atomization is carried out, the gas and oil are mixed to form a bubble flow, and then the secondary atomization is carried out through the secondary rotating mixing tube to enhance the atomization effect; the whole structure is reasonably designed, which realizes the function of flexible adjustment according to the power requirement, and enhances the Atomization effect, strong practicability.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Figure 1: Schematic diagram of the structure of the second-stage rotary mixing flexible nozzle of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection connected, or integrally connected; either directly or indirectly through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in FIG. 1 , it should be noted here that it should be understood that the use of the directional words should not limit the protection scope claimed by the present application.

In some optional embodiments, a secondary swirling and mixing flexible nozzle includes an oil pipe 1, a poppet valve 2, an air pipe 3, a casing 6, a primary swirling mixing pipe 5 and a secondary swirling mixing pipe 7, and the top of the oil pipe 1 A low pressure oil return hole 11 is opened, the cone valve 2 is arranged in the oil pipe 1, and a boss for separating the oil cavity of the oil pipe is formed on the side wall of the cone valve 2, and the oil cavity of the oil pipe is divided into high pressure by the boss. The oil cavity 15 and the low pressure oil cavity 13, the cone valve 2 is provided with an oil return passage 21, the oil return passage 21 is communicated with the low pressure oil return hole 11 of the oil pipe, and the bottom of the oil pipe 1 is connected with the first-stage rotary mixed pipe The top of 5 is connected, and the first sealing ring 41 is provided at the connection; the oil return channel 21 of the cone valve is communicated with the injection channel 51 of the first-stage rotary mixing pipe, and the bottom of the first-stage rotary mixing pipe 5 is connected with the second-stage rotary mixing pipe. The top of the mixing pipe 7 is fixedly connected, and a mixing cavity 8 is formed at the connection between the first-level rotating mixing pipe 5 and the second-level rotating mixing pipe 7, and the first-level rotating mixing pipe 5 and the second-level rotating mixing pipe 7 are both arranged in the In the casing 6, the bottom of the secondary rotating mixing pipe 7 is connected with the bottom of the casing 6, and a third sealing ring 43 is provided at the connection; The cavities communicate with each other; the gas pipe 3 is sheathed and fixed on the outer side wall of the oil pipe 1 .

Using the above embodiment, the bottom of the cone valve 2 is formed with two cone surfaces, and the cone angle of the upper cone surface is larger than the cone angle of the lower cone surface. Through the two cone surfaces of the poppet valve, the pressure from the oil resistance on the poppet valve is further reduced, so that the high-pressure oil transitions smoothly and helps to prolong the service life of the poppet valve.

Optionally, the top of the oil pipe 1 is provided with a surplus cavity 12 for facilitating the movement of the poppet valve. A spring is arranged between the boss of the cone valve and the surplus cavity of the oil pipe.

Optionally, a plurality of circumferentially inclined primary air holes 52 are formed on the side wall of the primary swirling mixing pipe 5 , and the swirling mixing chamber 8 communicates with the air pipe 3 through the primary air holes 52 .

Using the above embodiment, the sidewall of the first-stage rotating mixing pipe 5 is formed with an upper cone surface and a lower cone surface, the cone angle of the upper cone surface is larger than the cone angle of the lower cone surface, and the first-stage air hole is arranged in the lower cone surface. On the cone surface, the cone angle of the upper cone surface is larger than the cone angle of the lower cone surface, which helps the gas in the trachea to enter the mixing chamber through the primary air hole more smoothly, reducing the influence of the vibration caused by the gas pressure on the nozzle. .

Optionally, the inclination angle of the primary air hole 52 is 30 degrees.

Optionally, the mixing chamber 8 is in the shape of a spindle.

Using the above embodiment, the secondary swirling mixing pipe 7 is provided with a plurality of circumferentially inclined secondary air holes 72 , and the output channel 71 of the secondary swirling mixing pipe 7 communicates with the gas pipe 3 through the secondary air holes 72 . A cone surface is formed on the side wall of the secondary rotating mixing pipe, and the secondary air hole is arranged on the cone surface. The transition buffer of the cone surface helps the gas in the trachea to enter the output channel through the secondary air hole more smoothly. in order to reduce the impact of vibration from the gas pressure on the nozzle.

Optionally, the outlet of the output channel 71 of the secondary rotating mixing pipe 7 is tapered; through the tapered design at the outlet, the contact surface is enlarged, which helps to reduce the pressure of the atomized gas.

Optionally, a second sealing ring 42 is provided at the threaded connection between the gas pipe 3 and the housing 6 .

Optionally, the oil pipe 1 , the poppet valve 2 , the gas pipe 3 , the casing 6 , the primary swirling mixing pipe 5 and the secondary swirling mixing pipe 7 are all coaxially arranged.

With the above embodiment, the high pressure oil enters the high pressure oil chamber 15 from the oil inlet hole 14, and the opening degree of the poppet valve 2 is controlled under the combined action of the oil pressure and the spring force. When the pressure of the high-pressure oil chamber 15 increases, the spring is compressed and the height of the poppet valve 2 is adjusted. The distance between the poppet valve 2 and the injection channel 51 is getting larger and larger, and at the same time, the amount of oil flowing out from the injection channel 51 is increasing. On the contrary, when the fluid in the high-pressure oil chamber 15 becomes smaller, the pressure in the high-pressure oil chamber 15 is small, the spring is extended, the poppet valve 2 is lowered, and the amount of oil flowing out from the injection channel 51 is also reduced until the pressure of the fluid is equal to After the elastic force reaches a balance, the oil in the spray channel 51 will be sprayed evenly, and will be atomized once through the mixing chamber, and then mixed with the gas entering from the secondary air hole 72 for secondary atomization to ensure the atomization effect.

The present invention is described above by way of example, but the present invention is not limited to the above-mentioned specific embodiments, and any changes or modifications made based on the present invention belong to the scope of protection of the present invention.

Claims (10)

1. A secondary rotary mixing flexible nozzle, characterized in that: it comprises an oil pipe (1), a cone valve (2), a gas pipe (3), a casing (6), a primary rotary mixing pipe (5) and a secondary rotary mixing Pipe (7), the top of the oil pipe (1) is provided with a low pressure oil return hole (11), the cone valve (2) is arranged in the oil pipe (1), and the side wall of the cone valve (2) is formed with a A boss that separates the oil cavity of the oil pipe, the cone valve (2) is provided with an oil return passage (21), the oil return passage (21) is communicated with the low pressure oil return hole (11) of the oil pipe, and the oil pipe ( 1) The bottom is connected with the top of the first-level rotary mixing pipe (5), and the joint is provided with a first sealing ring (41); Fixed connection, a mixing cavity (8) is formed at the connection between the first-level rotating mixing pipe (5) and the second-level rotating mixing pipe (7), and the first-level rotating mixing pipe (5) and the second-level rotating mixing pipe ( 7) All are arranged in the casing (6), the bottom of the secondary mixing pipe (7) is connected with the bottom of the casing (6), and a third sealing ring (43) is provided at the connection; the top of the casing (6) It is threadedly connected with the gas pipe (3), and the gas pipe (3) is communicated with the inner cavity of the casing (6); the gas pipe (3) is sheathed and fixed on the outer wall of the oil pipe (1). 2 . The two-stage rotary mixing flexible nozzle according to claim 1 , wherein the top of the oil pipe ( 1 ) is provided with a surplus cavity ( 12 ) for facilitating the movement of the poppet valve. 3 . 3. The flexible second-stage rotary mixing nozzle according to claim 1, wherein a plurality of circumferentially inclined first-stage air holes (52) are formed on the side wall of the first-stage rotary mixing pipe (5). and the mixing chamber (8) communicates with the trachea (3) through the primary air hole (52). 4. The flexible nozzle for secondary rotary mixing according to claim 1 or 3, characterized in that: an upper conical surface and a lower conical surface are formed on the side wall of the primary rotary mixing pipe (5). The taper angle of the taper surface is greater than the taper angle of the lower taper surface. 5 . The two-stage rotary mixing flexible nozzle according to claim 3 , wherein the inclination angle of the first-stage air holes ( 52 ) is 30 degrees. 6 . 6 . The two-stage rotary mixing flexible nozzle according to claim 1 , wherein the rotary mixing cavity ( 8 ) is in the shape of a spindle. 7 . 7 . The flexible second-stage rotary mixing nozzle according to claim 1 , wherein a plurality of circumferentially inclined secondary air holes ( 72 ) are provided on the second-stage rotary mixing pipe ( 7 ). The output channel (71) of the rotating mixing pipe (7) is communicated with the gas pipe (3) through the secondary air hole (72). 8 . The flexible nozzle for secondary rotary mixing according to claim 7 , wherein the outlet of the output channel ( 71 ) of the secondary rotary mixing pipe ( 7 ) is tapered. 9 . 9 . The two-stage rotary mixing flexible nozzle according to claim 1 , wherein a second sealing ring ( 42 ) is provided at the threaded connection between the gas pipe ( 3 ) and the casing ( 6 ). 10 . 10. The flexible nozzle for secondary rotary mixing according to claim 1, characterized in that: the oil pipe (1), the cone valve (2), the gas pipe (3), the casing (6), the primary rotary mixing pipe (5) and the secondary rotary mixing pipe (7) are coaxially arranged.