CN115055017B - Oblique swirl centrifugal atomization spraying device - Google Patents
Oblique swirl centrifugal atomization spraying device Download PDFInfo
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- CN115055017B CN115055017B CN202210717666.3A CN202210717666A CN115055017B CN 115055017 B CN115055017 B CN 115055017B CN 202210717666 A CN202210717666 A CN 202210717666A CN 115055017 B CN115055017 B CN 115055017B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
Abstract
The invention discloses an oblique rotational flow type centrifugal atomization spraying device, which comprises a self-opening valve and an atomization spray nozzle, wherein the atomization spray nozzle comprises a spray nozzle shell, an inner core is arranged in the spray nozzle shell, the inner core divides the inner cavity of the spray nozzle shell into a water inlet cavity and a water outlet cavity, a plurality of rotational flow channels are penetrated through the inner core, and an atomization spray hole which is communicated with the outside of a shell and the water outlet cavity is also arranged on the spray nozzle shell; the water outlet cavity is in a sandwich shape and mainly comprises an annular vertical part and an annular cambered surface part. The centrifugal cyclone separator has the remarkable effects that the centrifugal cyclone separator adopts an oblique water inlet mode to carry out centrifugation, so that the centrifugal cyclone separator has the characteristics of tangential cyclone and longitudinal cyclone, and the entity after cyclone is restrained through the sandwich water outlet cavity, so that the occurrence of turbulence is reduced; can obtain denser and more uniform atomized liquid drops and can improve a certain range.
Description
Technical Field
The invention relates to the field of atomization spraying, in particular to an inclined rotational flow type centrifugal atomization spraying device.
Background
The spray dust fall has the advantages of economy, simplicity, convenience, practicability and the like, is widely applied to the fields of building construction, coal mines and the like, but the spray effect and the trapping efficiency of the spray nozzle still cannot meet the requirement of high-efficiency dust fall. For atomizing nozzles, in addition to their own parameters, the spray pressure is also a critical factor in determining the size of the atomized particles. With the nozzle selected, the spray pressure is proportional to the particle size of the atomized dust, and the smaller the particle size of the atomized dust, the better the effect of capturing the respiratory dust. Due to the complexity of the nozzle atomization process, research into atomization performance is mainly dependent on the development of disciplines such as gas dynamics, two-phase fluid dynamics and numerical methods, and most of the research is experimental besides some theoretical research. In coal mine spraying dust fall, pressure type, rotary type, pneumatic type, ultrasonic wave atomizing nozzles and the like are all applied, the most common use is pressure type atomizing nozzles, and compared with pressure type, swirl type atomizing nozzles have unique advantages, including good spraying performance under low pressure conditions, small influence of viscosity, small air consumption and the like. With these advantages, swirl-type centrifugal atomizing nozzles have been attempted to be applied to gas turbines, internal combustion engines, boilers, industrial processes, and the like.
So far, due to the complexity of the atomization process and the diversity of structures, the theoretical and experimental researches of researchers on the nozzle are still continuously explored and perfected. The system design of the nozzle structure, the research of the atomization mechanism and the derivation of more convincing theory and application systems are still research directions and targets of future scholars.
Disclosure of Invention
The invention provides an oblique rotational flow type centrifugal atomization spraying device, which mainly adopts the following technical scheme:
the device comprises an automatic valve and an atomizing nozzle, wherein an outlet of the automatic valve is communicated with an inlet of the atomizing nozzle;
the atomization spray nozzle comprises a spray nozzle shell, an inner core is arranged in the spray nozzle shell and is tightly adhered to the inner wall of the spray nozzle shell, the inner core divides the inner cavity of the spray nozzle shell into a water inlet cavity and a water outlet cavity, a plurality of rotational flow channels are penetrated through the inner core, two ends of each rotational flow channel are respectively communicated with the water inlet cavity and the water outlet cavity, the water inlet cavity is communicated with the outlet of the self-opening valve, an atomization spray hole is further formed in the spray nozzle shell, and the outside of the spray nozzle shell is communicated with the water outlet cavity through the atomization spray hole;
the key points are as follows: a part of inner wall of the spray head shell forms a water outlet outer wall, a part of outer wall of the inner core forms a water outlet inner wall, and the water outlet outer wall and the water outlet inner wall are restrained into the water outlet cavity;
the water outlet outer wall comprises a first cylinder section, a first cambered surface section and a circular surface section, wherein the central lines of the first cylinder section, the first cambered surface section and the circular surface section are mutually overlapped, the first cambered surface section is connected between the first cylinder section and the circular surface section, and the radius of the first cylinder section is R 1 The radius of the first cambered surface section is R 2 The arc length of the first cambered surface section is pi R 2 2, the radius of the circular surface section is R 3 ，R 2 +R 3 ＝R 1 One end of the first cylinder section is tangent to one end of the first cambered surface section and is in linear transition connection, the other end of the first cambered surface section is tangent to the outer edge of the circular surface section and is in linear transition connection, the center line of the circular surface section is perpendicular to the plane in which the circular surface section is positioned, and the atomizing spray hole is formed in the center position of the circular surface section;
the inner water outlet wall comprises a second cylinder section, a second cambered surface section and a conical guide surface, the central lines of which are mutually overlapped, the second cambered surface section is connected between the second cylinder section and the conical guide surface, and the radius of the second cylinder section is r 1 The radius of the second cambered surface section is r 2 The arc length of the second cambered surface section is pi r 2 2, the bottom circle radius of the conical output surface is r 3 ，r 2 +r 3 ＝r 1 One end of the second cylinder section is tangent to one end of the second cambered surface section and is in linear transition connection, the other end of the second cambered surface section is in circular connection with the bottom of the conical guide-out surface, and the top of the conical guide-out surface faces the atomizing spray hole;
the center line of the first cylinder section coincides with the center line of the second cylinder section, a linear drainage cavity is formed between the first cylinder section and the second cylinder section, and the rotational flow channel is communicated with the linear drainage cavity.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is an enlarged view of the portion i of fig. 1;
FIG. 3 is a schematic view of the swirl passage 23a running inside the core 23;
fig. 4 is a schematic plan view of the core 23;
FIG. 5 is a dimension marking of a first cylindrical segment, a first arcuate segment, a circular segment, a second cylindrical segment, a second arcuate segment, and a tapered lead-out face;
fig. 6 is a schematic structural view of a main portion of the comparative head 1;
fig. 7 is a schematic view showing the structure of the main part of the comparative shower head 2;
fig. 8 is a graph of particle size distribution of atomized droplets.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1 to 5, an oblique rotational flow type centrifugal atomization spraying device comprises an automatic valve 1 and an atomization spray nozzle 2, wherein an outlet of the automatic valve 1 is communicated with an inlet of the atomization spray nozzle 2;
the atomizing nozzle 2 comprises a nozzle shell, an inner core 23 is arranged in the nozzle shell, the inner core 23 divides the inner cavity of the nozzle shell into a water inlet cavity 2a and a water outlet cavity 2b, a plurality of rotational flow channels 23a are penetrated through the inner core 23, two ends of each rotational flow channel 23a are respectively communicated with the water inlet cavity 2a and the water outlet cavity 2b, the water inlet cavity 2a is communicated with the outlet of the self-opening valve 1, an atomizing spray hole is further arranged on the nozzle shell, and the atomizing spray hole is communicated with the outside of the nozzle shell and the water outlet cavity 2b;
a part of the inner wall of the spray head shell forms a water outlet outer wall, a part of the outer wall of the inner core 23 forms a water outlet inner wall, and the water outlet outer wall and the water outlet inner wall are restrained into a water outlet cavity 2b;
the water outlet outer wall comprises a first cylinder section, a first cambered surface section and a circular surface section, wherein the central lines of the first cylinder section, the first cambered surface section and the circular surface section are mutually overlapped, the first cambered surface section is connected between the first cylinder section and the circular surface section, and the radius of the first cylinder section is R 1 The radius of the first cambered surface section is R 2 The arc length of the first cambered surface section is pi R 2 2, the radius of the circular surface section is R 3 ，R 2 +R 3 ＝R 1 One end of the first cylinder section is tangent to one end of the first cambered surface section and is in linear transition connection, the other end of the first cambered surface section is tangent to the outer edge of the circular surface section and is in linear transition connection, the center line of the circular surface section is perpendicular to the plane in which the circular surface section is positioned, and the atomizing spray hole is formed in the center position of the circular surface section;
the inner water outlet wall comprises a second cylinder section, a second cambered surface section and a conical guide surface, the central lines of which are mutually overlapped, the second cambered surface section is connected between the second cylinder section and the conical guide surface, and the radius of the second cylinder section is r 1 The radius of the second cambered surface section is r 2 The arc length of the second cambered surface section is pi r 2 2, the bottom circle radius of the conical output surface is r 3 ，r 2 +r 3 ＝r 1 One end of the second cylinder section is tangent to one end of the second cambered surface section and is in linear transition connection, the other end of the second cambered surface section is in circular connection with the bottom of the conical guide-out surface, and the top of the conical guide-out surface faces the atomizing spray hole;
the center line of the first cylinder section coincides with the center line of the second cylinder section, an annular linear drainage cavity is formed between the first cylinder section and the second cylinder section, and the rotational flow channel 23a is communicated with the linear drainage cavity.
Each cyclone channel 23a is spirally wound around the center line of the second cylinder section, the inlet end of the cyclone channel 23a is communicated with the water inlet cavity 2a, and the outlet end of the cyclone channel 23a extends radially outwards while being spirally wound in the direction of the water outlet cavity 2b;
the inner core 23 is provided with a ring-shaped rotational flow leading-out cavity 23b, the inlet end of the rotational flow leading-out cavity 23b is communicated with the outlet ends of all the rotational flow channels 23a, and the outlet end of the rotational flow leading-out cavity 23b extends radially outwards and is in butt joint communication with the linear drainage cavity.
The inner core 23 is provided with a thimble hole 23c corresponding to the conical guide-out surface, a thimble block 24 is movably embedded in the thimble hole 23c, the end face of the extending end of the thimble block 24 forms the conical guide-out surface, the bottom of the thimble hole 23c is also provided with a spray hole closing spring 25, the spray hole closing spring 25 acts on the thimble block 24 to enable the thimble block to have a trend of approaching to the outer wall of the water outlet, and the water pressure in the water outlet cavity 2b acts on the conical guide-out surface to enable the thimble block 24 to have a trend of being far away from the outer wall of the water outlet.
The atomization spray hole comprises an inner taper hole section, a middle section and an outer taper hole section which are communicated in sequence, wherein the big hole end of the inner taper hole section is communicated with the water outlet cavity 2b, the small hole end of the inner taper hole section is communicated with the middle section, the small hole end of the outer taper hole section is communicated with the middle section, the big hole end of the outer taper hole section is communicated with the outside of the spray head shell, and the taper of the inner taper hole section is smaller than that of the outer taper hole section;
the conical outlet surface of the ejector pin block 24 is also provided with a sealing head 29 matched with the atomization spray hole.
The water inlet cavity 2a is cylindrical, the central line of the water inlet cavity 2a coincides with the central line of the second cylindrical section, a cylindrical filter screen 26 which is coaxial with the water inlet cavity 2a is arranged in the water inlet cavity 2a, and the inlet end of the cyclone channel 23a is annularly and uniformly distributed on the outer side of the cylindrical filter screen 26;
the spray head shell is provided with a spray head inlet, one end of the cylindrical filter screen 26 is closed by abutting against the inner core 23, and the other end of the cylindrical filter screen 26 is communicated with the spray head inlet.
The shower nozzle shell includes front cover 21 and back lid 22 of mutual lock, the edge seal clamp of inner core 23 is established front cover 21 with back lid 22 between, the inner wall of front cover 21 forms the play water outer wall, the inside of back lid 22 forms the chamber of intaking 2a.
One end fixedly connected with filter screen fixing base 27 of tube-shape filter screen 26 be equipped with on the inner core 23 with the corresponding filter screen fixed orifices of filter screen fixing base 27, filter screen fixing base 27 threaded connection is in the filter screen fixed orifices, the loose end of tube-shape filter screen 26 is inserted and is established in the shower nozzle entry, the outer wall of the loose end of tube-shape filter screen 26 with the laminating of the inner wall of shower nozzle entry is sealed.
The inner core 23 is provided with a circle of wedge-shaped guide ring 28 surrounding the filter screen fixing hole, one end face of the wedge-shaped guide ring 28 is connected with the inner core 23, the thickness of the other end of the wedge-shaped guide ring 28 is gradually reduced to zero, the inner wall of the wedge-shaped guide ring 28 is tightly attached to the outer wall of the filter screen fixing seat 27, and the outer wall of the wedge-shaped guide ring 28 forms an annular guide inclined plane.
The self-opening and closing valve 1 comprises a valve shell, a valve inlet and a valve outlet are arranged on the valve shell, two opposite valve core seats 13 are arranged in the valve shell, the two valve core seats 13 are respectively arranged at two sides of a connecting line of the valve inlet and the valve outlet, the valve core seats 13 are slidably assembled in the valve shell, the two valve core seats 13 are close to or far away from each other when sliding, and the valve outlet is communicated with the nozzle inlet;
the front surfaces of the two valve core seats 13 are close to each other, the back surfaces of the two valve core seats 13 are far away from each other, the front surfaces of the valve core seats 13 comprise pressed inclined surfaces, closed planes and pressure relief inclined surfaces which are sequentially connected, the closed planes of the two valve core seats 13 are close to each other and are attached and abutted against each other, the pressed inclined surfaces are respectively close to and face the valve inlet, the pressure relief inclined surfaces are respectively close to and face the valve outlet, an adjustable flow channel is formed between the two valve core seats 13, a core seat adjusting cavity is formed between the two valve core seats 13 and the valve shell, and the core seat adjusting cavity and the adjustable flow channel are separated through the corresponding valve core seat 13; the back of the valve core seat 13 is respectively connected with a valve core spring 14, and the valve core spring 14 is tightly connected with the inner wall of the valve shell;
a horn-shaped pressure receiving cavity is formed between the pressure receiving inclined surfaces of the two valve core seats 13, a throttling cavity is formed between the sealing planes of the two valve core seats 13, a horn-shaped pressure releasing cavity is formed between the pressure releasing inclined surfaces of the two valve core seats 13, the large opening end of the pressure receiving cavity is communicated with the valve inlet, and the large opening end of the pressure releasing cavity is communicated with the valve outlet. When the acting force of the water inlet pressure on the valve core seat 13 is smaller than the acting force of the valve core spring 14 on the valve core seat 13, the two valve core seats 13 are close to each other and make the sealing planes of the two valve core seats contact and cling to each other, and at the moment, the throttling cavity disappears and the volume is zero; when the acting force of the water inlet pressure on the valve core seat 13 is larger than the acting force of the valve core spring 14 on the valve core seat 13, the two valve core seats 13 are far away from each other, the throttling cavity reappears, and the small opening end of the pressurized cavity and the small opening end of the pressure relief cavity are respectively communicated with the throttling cavity.
The swirl channel 23a is a circular channel, and the radius of the swirl channel 23a is R t ；
R 1 -r 1 ≤R t ≤1.5*R 1 -r 1 。
The particle size and range of the droplets after atomization of the swirl nozzle of example 1 at different working pressures (0.1-0.5 MPa) were measured and compared by taking the arithmetic mean value. As comparison, two types of comparison spray heads are arranged, and the same test is carried out under the same working pressure; the main differences between the comparative head 1 and the swirl head in example 1 are: the outlet chamber at the outlet side of the cyclone channel is hemispherical, as shown in fig. 6. The main differences of the comparison spray head 2 and the comparison spray head 1 are: the swirl passages in the comparative spray head 2 are equally radially spaced from their centerline when spirally wound in the axial direction, as shown in fig. 7.
The particle size distribution of the three spray heads is shown in fig. 8, and it can be seen from fig. 8: the swirling nozzle provided in example 1 provided smaller particle size and more concentrated distribution of droplets after atomization.
The range (mean) of the swirl nozzle was measured to be about 11% higher compared to comparative nozzle 1 and about 17% higher compared to comparative nozzle 2.
The beneficial effects are that: the nozzle adopted by the invention has the characteristics of tangential rotational flow and longitudinal rotational flow by adopting an oblique water inlet mode for centrifugation, and the entity after rotational flow is restrained by the layered water outlet cavity, so that the occurrence of turbulence is reduced; can obtain denser and more uniform atomized liquid drops and can improve a certain range.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The oblique rotational flow type centrifugal atomization spraying device comprises an automatic opening and closing valve (1) and an atomization nozzle (2), wherein an outlet of the automatic opening and closing valve (1) is communicated with an inlet of the atomization nozzle (2);
the atomizing nozzle (2) comprises a nozzle shell, an inner core (23) is arranged in the nozzle shell, the inner core (23) divides the inner cavity of the nozzle shell into a water inlet cavity (2 a) and a water outlet cavity (2 b), a plurality of rotational flow channels (23 a) are communicated with the inner core (23), two ends of each rotational flow channel (23 a) are respectively communicated with the water inlet cavity (2 a) and the water outlet cavity (2 b), the water inlet cavity (2 a) is communicated with the outlet of the self-opening valve (1), an atomizing spray hole is further formed in the nozzle shell, and the outside of the nozzle shell is communicated with the water outlet cavity (2 b);
the method is characterized in that: a part of inner wall of the spray head shell forms a water outlet outer wall, a part of outer wall of the inner core (23) forms a water outlet inner wall, and the water outlet outer wall and the water outlet inner wall are restrained into a water outlet cavity (2 b);
the water outlet outer wall comprises a first cylinder section, a first cambered surface section and a circular surface section, wherein the central lines of the first cylinder section, the first cambered surface section and the circular surface section are mutually overlapped, the first cambered surface section is connected between the first cylinder section and the circular surface section, and the radius of the first cylinder section is R 1 The radius of the first cambered surface section is R 2 The arc length of the first cambered surface section is pi R 2 2, the radius of the circular surface section is R 3 ，R 2 +R 3 =R 1 One end of the first cylinder section is tangent to one end of the first cambered surface section and is in linear transition connection, the other end of the first cambered surface section is tangent to the outer edge of the circular surface section and is in linear transition connection, the center line of the circular surface section is perpendicular to the plane in which the circular surface section is positioned, and the atomizing spray hole is formed in the center position of the circular surface section;
the inner water outlet wall comprises a second cylinder section, a second cambered surface section and a conical guide surface, the central lines of which are mutually overlapped, the second cambered surface section is connected between the second cylinder section and the conical guide surface, and the radius of the second cylinder section is r 1 The radius of the second cambered surface section is r 2 The arc length of the second cambered surface section is pi r 2 2, the bottom circle radius of the conical output surface is r 3 ，r 2 +r 3 =r 1 One end of the second cylinder section is tangent to one end of the second cambered surface section and is in linear transition connection, the other end of the second cambered surface section is in circular connection with the bottom of the conical guide-out surface, and the top of the conical guide-out surface faces the atomizing spray hole;
the center line of the first cylinder section coincides with the center line of the second cylinder section, an annular linear drainage cavity is formed between the first cylinder section and the second cylinder section, and the rotational flow channel (23 a) is communicated with the linear drainage cavity.
2. The diagonal swirl centrifugal atomizing spray device according to claim 1, wherein: each rotational flow channel (23 a) is spirally coiled around the central line of the second cylinder section, the inlet end of the rotational flow channel (23 a) is communicated with the water inlet cavity (2 a), and the outlet end of the rotational flow channel (23 a) is spirally coiled in the direction of the water outlet cavity (2 b) and simultaneously extends radially outwards;
the inner core (23) is provided with a circle of annular rotational flow leading-out cavity (23 b), the inlet end of the rotational flow leading-out cavity (23 b) is communicated with the outlet ends of all the rotational flow channels (23 a), and the outlet end of the rotational flow leading-out cavity (23 b) extends radially outwards and is in butt joint communication with the linear drainage cavity.
3. The diagonal swirl centrifugal atomizing spray device according to claim 1, wherein: the inner core (23) is provided with a thimble hole (23 c) corresponding to the conical outlet surface, a thimble block (24) is movably embedded in the thimble hole (23 c), the end face of the extending end of the thimble block (24) forms the conical outlet surface, the bottom of the thimble hole (23 c) is also provided with a jet hole sealing spring (25), the jet hole sealing spring (25) acts on the thimble block (24) to enable the thimble block to have a trend of approaching to the outer wall of water outlet, and the water pressure in the water outlet cavity (2 b) acts on the conical outlet surface to enable the thimble block (24) to have a trend of being far away from the outer wall of water outlet.
4. A diagonal swirl centrifugal atomizing spray device according to claim 3, wherein: the atomizing spray hole comprises an inner taper hole section, a middle section and an outer taper hole section which are communicated in sequence, wherein the big hole end of the inner taper hole section is communicated with the water outlet cavity (2 b), the small hole end of the inner taper hole section is communicated with the middle section, the small hole end of the outer taper hole section is communicated with the middle section, the big hole end of the outer taper hole section is communicated with the outside of the spray head shell, and the taper of the inner taper hole section is smaller than that of the outer taper hole section;
and a sealing head (29) matched with the atomizing spray hole is also arranged on the conical output surface of the thimble block (24).
5. The diagonal swirl centrifugal atomizing spray device according to claim 1, 2, 3 or 4, wherein: the water inlet cavity (2 a) is cylindrical, the central line of the water inlet cavity (2 a) coincides with the central line of the second cylindrical section, a cylindrical filter screen (26) which is coaxial with the water inlet cavity (2 a) is arranged in the water inlet cavity, and the inlet end of the cyclone channel (23 a) is annularly and uniformly distributed on the outer side of the cylindrical filter screen (26);
the spray head shell is provided with a spray head inlet, one end of the cylindrical filter screen (26) is closed by abutting against the inner core (23), and the other end of the cylindrical filter screen (26) is communicated with the spray head inlet.
6. The diagonal swirl centrifugal atomizing spray device according to claim 5, wherein: the shower nozzle shell includes front cover (21) and back lid (22) of mutual lock, the edge seal clamp of inner core (23) is established front cover (21) with between back lid (22), the inner wall of front cover (21) forms the play water outer wall, the inside of back lid (22) forms intake chamber (2 a).
7. The diagonal swirl centrifugal atomizing spray device according to claim 5, wherein: one end fixedly connected with filter screen fixing base (27) of tube-shape filter screen (26) be equipped with on inner core (23) with the corresponding filter screen fixed orifices of filter screen fixing base (27), filter screen fixing base (27) threaded connection is in the filter screen fixed orifices, the expansion end of tube-shape filter screen (26) is inserted and is established in the shower nozzle entry, the outer wall of the expansion end of tube-shape filter screen (26) with the laminating of the inner wall of shower nozzle entry is sealed.
8. The diagonal swirl centrifugal atomizing spray device according to claim 7, wherein: the inner core (23) is provided with a circle of wedge-shaped guide ring (28) around the filter screen fixing hole, one end face of the wedge-shaped guide ring (28) is connected with the inner core (23), the thickness of the other end of the wedge-shaped guide ring (28) is gradually reduced to zero, the inner wall of the wedge-shaped guide ring (28) is tightly attached to the outer wall of the filter screen fixing seat (27), and the outer wall of the wedge-shaped guide ring (28) forms an annular guide inclined plane.
9. The diagonal swirl centrifugal atomizing spray device according to claim 1, 2, 3 or 4, wherein: the self-opening and closing valve (1) comprises a valve shell, a valve inlet and a valve outlet are arranged on the valve shell, two opposite valve core seats (13) are arranged in the valve shell, the two valve core seats (13) are respectively positioned at two sides of a connecting line of the valve inlet and the valve outlet, the valve core seats (13) are slidably assembled in the valve shell, and the two valve core seats (13) are mutually close to or far away from each other when sliding;
the front surfaces of the two valve core seats (13) are close to each other, the back surfaces of the two valve core seats (13) are far away from each other, the front surfaces of the valve core seats (13) comprise pressed inclined surfaces, closed planes and pressure relief inclined surfaces which are sequentially connected, the closed planes of the two valve core seats (13) are close to each other and are abutted against each other, the pressed inclined surfaces are respectively close to and face the valve inlet, the pressure relief inclined surfaces are respectively close to and face the valve outlet, an adjustable flow channel is formed between the two valve core seats (13), a core seat adjusting cavity is formed between the two valve core seats (13) and the valve shell, and the core seat adjusting cavity and the adjustable flow channel are separated through the corresponding valve core seat (13); the back of the valve core seat (13) is respectively connected with a valve core spring (14), and the valve core spring (14) is connected with the inner wall of the valve shell in a propping way.
10. The diagonal swirl centrifugal atomizing spray device according to claim 1, 2, 3 or 4, wherein: the swirl channel (23 a) is a circular channel, and the radius of the swirl channel (23 a) is R t ；
（R 1 -r 1 ）≤R t ≤1.5*（R 1 -r 1 ）。
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| CN202210717666.3A CN115055017B (en) | 2022-06-23 | 2022-06-23 | Oblique swirl centrifugal atomization spraying device |
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| CN202210717666.3A CN115055017B (en) | 2022-06-23 | 2022-06-23 | Oblique swirl centrifugal atomization spraying device |
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