CN217796742U - Multi-flow-channel laminar-flow film spraying nozzle for high-viscosity fluid - Google Patents

Abstract

The utility model relates to a multi-flow channel laminar flow film spraying nozzle for high viscosity fluid, which comprises a base, a first clamping piece group outer piece, a second clamping piece group outer piece and an intermediate piece, wherein the first clamping piece group outer piece and the second clamping piece group outer piece are arranged below the base and are symmetrically arranged in the left-right direction, and the intermediate piece is arranged between the first clamping piece group outer piece and the second clamping piece group outer piece; the top of the base is provided with a fluid inlet, the liquid outlet end of the fluid inlet is branched into a plurality of flow channels, the liquid outlet end of each flow channel is respectively communicated with a flow guide groove, each flow guide groove is composed of a first clamping piece set outer piece, a second clamping piece set outer piece and a middle piece, the flow guide groove is gradually narrowed through an inclined plane structure and gradually changed to the opening of the middle piece and is matched with the middle piece to form a narrow slit, and after fluid enters from the fluid inlet, the fluid is branched into the plurality of flow channels and finally generates film-shaped fluid through the narrow slits to be sprayed out; compared with the prior art, the utility model, can realize that the fluid flow rate size is even under the stable condition of entry pressure, and the efflux face evenly distributed is even.

Description

Multi-flow-channel laminar-flow film spraying nozzle for high-viscosity fluid

[ technical field ]

The utility model belongs to the technical field of the spraying nozzle technique and specifically relates to a multithread way type laminar flow film spraying nozzle for high viscosity fluid.

[ background art ]

Spray nozzles are important components in industrial applications and can be used in numerous industries, such as automotive, LCD, and the like. In industrial production, rust prevention, water prevention, heat insulation, and the like are achieved by spraying a coating body with a high-viscosity fluid (polyvinyl chloride plastisol, polyester resin paint, and the like) using a spray nozzle assembled on an automatic control device.

Nozzles of this type are currently assembled from generally two outer plates of equal size and a thin middle plate known in the art using screws, the middle plate having a generally V-shaped profile at the spray level, but after application using known spray nozzles, an uneven relief (protrusion) may be produced on the coating surface. The uneven surface of the coating surface allows an air gap between the coating body and the fluid, which may cause the adhesion of the fluid to decrease. In some cases, the member to be sprayed interferes with other members in subsequent processing.

[ contents of utility model ]

The utility model aims at solving foretell not enough and providing a multithread way type laminar flow film spraying nozzle for high viscosity fluid, can be under the stable circumstances of entry pressure, the branching runner forms the multinomial export and erupts through the nozzle slot behind the single import of nozzle, and it is even to realize the fluid flow rate size, and efflux face evenly distributed.

The multi-flow-channel laminar flow film spraying nozzle for the high-viscosity fluid comprises a base 1, a first clamping piece group outer piece 4A, a second clamping piece group outer piece 4B and an intermediate piece 5, wherein the first clamping piece group outer piece 4A and the second clamping piece group outer piece 4B are arranged below the base 1 and are arranged in a bilateral symmetry mode, and the intermediate piece 5 is arranged between the first clamping piece group outer piece 4A and the second clamping piece group outer piece 4B; the top of the base 1 is provided with a fluid inlet 1-1, the liquid outlet end of the fluid inlet 1-1 is branched into a plurality of flow channels, the flow channels are arranged at the inner lower part of the base 1, the liquid outlet end of each flow channel is respectively communicated with a flow guide groove, the flow guide groove is arranged corresponding to the flow channels, the flow guide groove is composed of a first clamping piece group outer piece 4A, a second clamping piece group outer piece 4B and a middle piece 5, the lower part of the middle piece 5 is provided with an opening 5-1-3, the flow guide groove is gradually narrowed through an inclined plane structure and gradually changed to the opening 5-1-3 of the middle piece 5 to form a narrow gap 5-1 by matching with the middle piece 5, after fluid enters from the fluid inlet 1-1, the branched fluid enters the flow channels, respectively enters the flow guide groove from the flow channels and is extruded by the inclined plane, then flows into the narrow gap to be converged, and film-shaped fluid is sprayed out through the narrow gap 5-1.

Further, base 1 both sides are provided with location holding down plate 2 and top board 3 respectively, location holding down plate 2 staple bolt is in base 1 and the two 4B outsides of clamping piece group outer, 3 staple bolts of top board are in the base 1 and the one 4A outside of clamping piece group outer, base 1, the one 4A of clamping piece group outer, the two 4B of clamping piece group outer pass through top board 3, and location holding down plate 2 connects as an organic wholely.

Furthermore, two sides of an opening 5-1-3 at the lower part of the middle plate 5 are respectively provided with an inclined surface 5-1-4, the opening 5-1-3 gradually widens from top to bottom, and the fluid flowing into the narrow gap 5-1 releases pressure due to the gradual widening of the narrow gap 5-1, so that the flow speed of the high-viscosity fluid in the narrow gap 5-1 is reduced.

Further, a first base flow channel 1-1-1, a second base flow channel 1-1-2 and a third base flow channel 1-1-3 are distributed in the base 1 in a branching manner, the first clamp group outer sheet 4A, the second clamp group outer sheet 4B and the middle sheet 5 form a first flow guide groove A-4A-1, a second flow guide groove A-4A-2, a third flow guide groove A-4A-3, a first flow guide groove B-4B-1, a second flow guide groove B-4B-2 and a third flow guide groove B-4B-3, the first flow guide groove A-4A-1 and the second flow guide groove B-4B-1 are oppositely arranged and communicated with the first base flow channel 1-1-1, the second flow guide groove A-4A-2 and the second flow guide groove B-4B-2 are oppositely arranged and communicated with the second base flow channel 1-1-2, and the third flow guide groove A-4A-3 and the third flow guide groove B-4B-3 are oppositely arranged and communicated with the third base flow channel 1-1-1-3.

Furthermore, six slopes are respectively arranged on the inner upper portions of the first clamping piece group outer piece 4A and the second clamping piece group outer piece 4B, and the six slopes, the first middle piece side face 5-1-1 and the second middle piece side face 5-1-2 of the middle piece 5 respectively form a flow guide groove with a V-shaped gradually-narrowed longitudinal section.

Preferably, the number of the flow passages and the number of the flow guide grooves are respectively 2-5, and the outlet length of the narrow slits 5-1 is more than or equal to 100 times of the width of the narrow slits 5-1.

Preferably, the inner cavity structures of the first clamping piece set outer piece 4A and the second clamping piece set outer piece 4B are the same.

Compared with the prior art, the utility model, have following advantage:

(1) The utility model can form a multi-outlet inlet and an inner cavity diversion trench under the condition of stable inlet pressure, the flow velocity of the fluid can be uniform, and the jet surface is evenly distributed;

(2) The diversion trench of the utility model can meet the blowing and spraying under the specific width, the impact force of the whole jet surface is uniform, and the edge impact force is not weakened;

(3) The utility model adopts the inclined plane matching slit, which is different from the design of the step diversion groove type laminar flow film spraying nozzle, thereby reducing the manufacturing difficulty, saving the processing time and the energy consumption during the manufacturing;

(4) After passing through the diversion trench, the fluid of the utility model is extruded by the inclined plane and then flows into the narrow slit evenly, the narrow slit is gradually widened, the fluid pressure is released, the flow velocity of the high-viscosity fluid in the narrow slit of the nozzle is slowed down, and finally the high-viscosity fluid is evenly and flatly covered on the surface to be sprayed;

(5) The utility model discloses can realize the coating of even cover, satisfy customer specific requirement, solve fluidic adhesion decline and disturb assembly scheduling problem among the practical application, be worth popularizing and applying.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic front structural view of the present invention;

fig. 3 is a schematic side view of the present invention;

fig. 4 is a cross-sectional view of the present invention;

FIG. 5 is a cross-sectional view of the present invention with the center piece removed;

fig. 6 is a side sectional view of the present invention;

fig. 7 is a top view of the first outer clip sheet and the second outer clip sheet of the present invention;

FIG. 8 is a schematic front view of the middle plate of the present invention;

fig. 9 is a schematic top view of the middle plate of the present invention;

in the figure: 1. the device comprises a base 2, a positioning lower pressing plate 3, an upper pressing plate 4A, a first clamping piece group outer piece 4B, a second clamping piece group outer piece 5, a middle piece 1-1, a fluid inlet 1-1-1, a first base runner 1-1-2, a second base runner 1-1-3, a third base runner 4A-1, a first diversion trench A4A-2, a second diversion trench A4A-3, a third diversion trench A4B-1, a first diversion trench B4B-2, a second diversion trench B4B-3, a third diversion trench B4A-2-1, a first slope 4B-2-1, a second slope 5-1, a narrow slit 5-1-1, a first middle piece side face 5-1-2, a second middle piece side face 5-1-3, an opening 5-1-4 and an inclined face.

[ detailed description of the invention ]

As shown in the attached drawings, the utility model relates to a broad width spray nozzle for high viscosity fluid, which mainly utilizes the broad width spray nozzle technology of high viscosity fluid to evenly spray coating body, in particular to a multi-flow channel laminar flow film spray nozzle for high viscosity fluid, comprising a base 1, a first clamping piece group outer piece 4A, a second clamping piece group outer piece 4B and a middle piece 5, wherein the first clamping piece group outer piece 4A and the second clamping piece group outer piece 4B are arranged below the base 1 and are arranged symmetrically left and right, and the middle piece 5 is arranged between the first clamping piece group outer piece 4A and the second clamping piece group outer piece 4B; a positioning lower pressing plate 2 and an upper pressing plate 3 are respectively arranged on two sides of the base 1, the positioning lower pressing plate 2 is hooped on the outer sides of the base 1 and the clamping piece group outer piece two 4B, the upper pressing plate 3 is hooped on the outer sides of the base 1 and the clamping piece group outer piece one 4A, the base 1, the clamping piece group outer piece one 4A and the clamping piece group outer piece two 4B are connected into a whole through the upper pressing plate 3; the top of the base 1 is provided with a fluid inlet 1-1, the liquid outlet end of the fluid inlet 1-1 is branched into a plurality of flow channels, the plurality of flow channels are arranged at the inner lower part of the base 1, the liquid outlet end of each flow channel is respectively communicated with a flow guide groove, the flow guide grooves are arranged corresponding to the flow channels, each flow guide groove is composed of a first clamping piece group outer piece 4A, a second clamping piece group outer piece 4B and a middle piece 5, the lower part of the middle piece 5 is provided with an opening 5-1-3, the flow guide grooves gradually narrow through an inclined surface structure and gradually change to the openings 5-1-3 of the middle piece 5 to form narrow slits 5-1 by matching with the middle piece 5, and after fluid enters from the fluid inlet 1-1, the fluid branches enter the plurality of flow channels, respectively enter the flow guide grooves from the flow channels and are extruded by the inclined surfaces, then flow into the narrow slits to be converged, and film-shaped fluid is sprayed out through the narrow slits 5-1.

Wherein, the two sides of the opening 5-1-3 at the lower part of the middle sheet 5 are respectively provided with an inclined surface 5-1-4, the opening 5-1-3 gradually widens from top to bottom, and the fluid flowing into the narrow slit 5-1 releases pressure because the narrow slit 5-1 gradually widens, thereby slowing down the flow velocity of the high-viscosity fluid in the narrow slit 5-1. The base 1 is internally provided with a base flow channel I1-1-1, a base flow channel II 1-1-2 and a base flow channel III 1-1-3 in a branching way, the clamping piece group outer piece I4A, the clamping piece group outer piece II 4B and the middle piece 5 form a flow guide groove A I4A-1, a flow guide groove A II 4A-2, a flow guide groove A III 4A-3, a flow guide groove B I4B-1, a flow guide groove B II 4B-2 and a flow guide groove B III 4B-3, the flow guide groove A I4A-1 and the flow guide groove B I4B-1 are oppositely arranged and communicated with the base flow channel I1-1-1, the flow guide groove A II 4A-2 and the flow guide groove B II 4B-2 are oppositely arranged and communicated with the base flow channel II 1-1-2, the flow guide groove A III 4A-3 and the flow guide groove B III 4B-3 are oppositely arranged and communicated with the base flow guide groove III 1-1-1-3. Six slopes are respectively arranged on the inner upper parts of the first clamping piece group outer piece 4A and the second clamping piece group outer piece 4B, and a flow guide groove with a V-shaped longitudinal section, which gradually narrows, is respectively formed by the six slopes, and the first middle piece side face 5-1-1 and the second middle piece side face 5-1-2 of the middle piece 5.

The invention will be further described with reference to the following specific examples:

the utility model provides a wide-width layer multi-runner flow film spraying nozzle, which mainly comprises a base, a positioning lower pressing plate, an upper pressing plate, a first clamping piece group outer piece, a second clamping piece group outer piece, a middle piece, a base fluid inlet, a first base runner 1-1-1, a second base runner 1-1-2, a third base runner 1-1-3 … and a base runner X1-1-X, wherein the first base runner and the second base runner are respectively marked as a first base runner 1-1-1; and respectively identified as 4A-1, 4A-2, 4A-3 … A-X;4B-1, 4B-2, 4B-3 … B-X; according to the wide multi-runner laminar flow film spraying nozzle, the inner cavity structures of the first clamping piece group outer piece and the second clamping piece group outer piece are the same; the nozzle fluid inlet 1-1 is branched into a plurality of flow channels, fluid flows into the whole nozzle inner cavity substantially uniformly through the base flow channel I1-1-1, the base flow channel II 1-1-2, the base flow channel III 1-1-3 and the base flow channel X1-1-X, and the number of the flow channels X is more than 1 and less than 5.

Specifically, taking a three-branch flow passage scheme as an example, six flow guide grooves which are identical to each other are sequentially arranged in the inner cavity of the nozzle, fluid is branched into three flow passages from a fluid inlet of the body (the nozzle base), namely 1-1-1, 1-1-2 and 1-1-3, the fluid is guided into the six flow guide grooves (4A-1, 4A-2, 4A-3, 4B-1, 4B-2 and 4B-3) of the clamping piece group, the fluid is extruded through the gradually narrowed flow guide grooves formed by six slopes (such as 4A-2-1, 4B-2-1 and the like) of the first clamping piece group and the second clamping piece group and two side surfaces (5-1-1 and 5-1-2) of the middle piece, so that the flow rate and the surface uniformity of the fluid in the nozzle cavity are adjusted, the required thickness during fluid injection is gradually controlled, and finally, the fluid is injected through narrow gaps formed by the first clamping piece group and the second clamping piece group and the middle piece. The length of the outlet of the nozzle slit is more than or equal to 100 times of the width of the slit, and if the width of the slit 5-1 is equal to Y mm, the length of the outlet of the corresponding slit is more than or equal to 100x Y mm. The thickness C5 of the intermediate sheet controls both the width of the slit and the thickness of the fluid ejected from the thin film.

The nozzle is used for spraying a jet flow of high-viscosity fluid, wherein the fluid sprayed by the jet flow of the narrow slit of the nozzle is the high-viscosity fluid with a specific volume flow rate; the jet flow plane passing through the nozzle narrow slit is generally flat, the flow velocity distribution is uniform, the jet flow plane passing through the nozzle narrow slit has a specific coverage width, and the width depends on the whole length of the nozzle, the process requirement and the fluid viscosity volume flow. Through a fluid inlet, a plurality of base runners are branched, uniform flow speed is reduced, uniform distribution flow is adjusted and distributed in an inner cavity, and 1-straw-X-straw-5 corresponding to the number of the runners is adjusted according to the length of a nozzle; all the fluid is ejected through the nozzle slot, where the jet plane is laminar and uniform as a thin film.

Therefore, the utility model discloses well fluid makes the fluid flow direction unanimous gradually through six guiding gutters after once the slope compression that narrows gradually, and basically there is not the lateral flow after assembling to the narrow slit, and the flow direction is unanimous through the narrow slit blowout, and it is even to produce the size, direction and export vertically film form fluid blowout.

The utility model discloses with traditional single fluid import and outlet nozzle base design, change into the branching runner behind the single import, form many exports, realize and control fluid jet flow face flow and velocity of flow evenly distributed to a certain extent, the coating surface evenly adheres the state after using this nozzle coating simultaneously, and the coating surface does not have the difference in height by a wide margin, improves production efficiency and solves the interference problem that the fluid adhesion descends. The nozzle fluid of the base passes through a plurality of outlets of the base and enters a plurality of square grooves (1-in-X-type (5) of the clamping piece group), the square grooves are gradually narrowed through an inclined surface structure and gradually changed to the opening of the middle clamping piece, and narrow slits are formed by matching with the middle piece. After passing through the feed inlet of the square groove, the fluid is uniformly extruded by the inclined plane and then flows into the narrow slit, the narrow slit is gradually widened, the fluid pressure is released, the flow speed of the high-viscosity fluid in the narrow slit of the nozzle is slowed down, and finally the high-viscosity fluid is uniformly and flatly covered on the sprayed surface. The nozzle device can realize uniform coating, meet specific requirements of customers, and solve the problems of reduced adhesion force of fluid, interference on assembly and the like in practical application.

The wide-width multi-channel spraying nozzle for high-viscosity fluid uses a spraying flow to implement a process with a specific width flow, and the plane basic flow velocity of the spraying flow is stable and uniform. The jet flow surface of the nozzle has more process requirements and volume flow of fluid, has a specific jet width, and is in a laminar state with uniform distribution. The material uniformly and quickly flows into the whole inner cavity of the nozzle from the fluid inlet, then the uniform flow speed is reduced through the forked flow channels, the uniform distribution flow is adjusted and distributed in the inner cavity, then the material uniformly flows into the gradually-widened narrow slit after being extruded by the inclined surface, and finally the material is ejected out of the flat ejection surface of the film laminar flow through the narrow slit.

The present invention is not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and are all included in the protection scope of the present invention.

Claims (8)

1. A multi-flow-channel laminar-flow film spray nozzle for high-viscosity fluids, characterized by: the clamping device comprises a base (1), a first clamping piece group outer piece (4A), a second clamping piece group outer piece (4B) and a middle piece (5), wherein the first clamping piece group outer piece (4A) and the second clamping piece group outer piece (4B) are arranged below the base (1) and are arranged in a bilateral symmetry mode, and the middle piece (5) is arranged between the first clamping piece group outer piece (4A) and the second clamping piece group outer piece (4B); the top of the base (1) is provided with a fluid inlet (1-1), the liquid outlet end of the fluid inlet (1-1) is branched into a plurality of flow channels, the flow channels are arranged at the inner lower part of the base (1), the liquid outlet end of each flow channel is respectively communicated with a flow guide groove, the flow guide grooves are arranged corresponding to the flow channels, each flow guide groove is composed of a first clamping piece group outer piece (4A), a second clamping piece group outer piece (4B) and a middle piece (5), the lower part of the middle piece (5) is provided with an opening (5-1-3), the flow guide grooves are gradually narrowed through an inclined surface structure and gradually changed to the openings (5-1-3) of the middle piece (5), and form narrow slits (5-1) through cooperation with the middle piece (5), after fluid enters from the fluid inlet (1-1), the branched fluid enters the flow channels, respectively enters the flow guide grooves from the flow channels, is extruded by the inclined surfaces, flows into the narrow converging slits, and generates fluid spraying films through the narrow slits (5-1).

2. The multi-channel type laminar flow film spray nozzle for high viscosity fluid according to claim 1, wherein: base (1) both sides are provided with location holding down plate (2) and top board (3) respectively, location holding down plate (2) staple bolt is in base (1) and the two (4B) outsides of clamping piece group, top board (3) staple bolt is in base (1) and the one (4A) outside of clamping piece group outsides, base (1), the one (4A) of clamping piece group outsides, clamping piece group outsides two (4B) pass through top board (3), and location holding down plate (2) are connected as an organic wholely.

3. The multi-flow-channel type laminar thin film spray nozzle for high-viscosity fluid according to claim 1, characterized in that: two sides of an opening (5-1-3) at the lower part of the middle plate (5) are respectively provided with an inclined surface (5-1-4), the opening (5-1-3) is gradually widened from top to bottom, and the fluid flowing into the narrow gap (5-1) releases pressure due to the gradual widening of the narrow gap (5-1) so as to slow down the flow speed of the high-viscosity fluid in the narrow gap (5-1).

4. The multi-flow-channel type laminar thin film spray nozzle for high-viscosity fluid according to claim 1, characterized in that: the base is characterized in that a base flow channel I (1-1-1), a base flow channel II (1-1-2) and a base flow channel III (1-1-3) are distributed in the base (1) in a branching manner, the clamp group outer sheet I (4A), the clamp group outer sheet II (4B) and the middle sheet (5) form a flow guide groove A I (4A-1), a flow guide groove A II (4A-2), a flow guide groove A III (4A-3), a flow guide groove B I (4B-1), a flow guide groove B II (4B-2) and a flow guide groove B III (4B-3), the flow guide groove A I (4A-1) and the flow guide groove B I (4B-1) are arranged oppositely and communicated with the base flow channel I (1-1), the flow guide groove A II (4A-2) and the flow guide groove B II (4B-2) are arranged oppositely and communicated with the base flow channel II (1-1-2), and the flow guide groove A III (4A-3) and the flow guide groove B I (4A-3) and the base flow guide groove (1-3) are arranged oppositely communicated with the base flow channel I (1-1-3).

5. The multi-flow-channel type laminar thin film spray nozzle for high-viscosity fluid according to claim 1, characterized in that: six slopes are respectively arranged on the inner upper portions of the first clamping piece group outer piece (4A) and the second clamping piece group outer piece (4B), and a flow guide groove with a V-shaped longitudinal section is formed by the six slopes and the first middle piece side face (5-1-1) and the second middle piece side face (5-1-2) of the middle piece (5).

6. The multi-flow-channel type laminar thin film spray nozzle for high-viscosity fluid according to claim 1, characterized in that: the flow channel and the diversion trench are respectively provided with 2-5.

7. The multi-channel type laminar flow film spray nozzle for high viscosity fluid according to claim 1, wherein: the length of the outlet of the narrow slit (5-1) is more than or equal to 100 times of the width of the narrow slit (5-1).

8. The multi-flow-channel type laminar thin film spray nozzle for high-viscosity fluid according to claim 1, characterized in that: the inner cavity structures of the first clamping piece group outer piece (4A) and the second clamping piece group outer piece (4B) are the same.

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