TWI730871B - Dual fluid spray gun - Google Patents

Abstract

The present invention discloses a dual-fluid spray gun, which includes a handle portion, a pipe portion, a spray head, and a plurality of nozzles arranged on the spray head in series. The spray head has a first and second sets of ports and a plurality of air outlets formed on the preset outer end surface, and a plurality of air intake channels formed inside and communicated with the first set of ports and the air outlets, and a plurality of air outlets communicated with each air outlet. The lead-in channel, and at least one distribution channel connected to each lead-in channel and the second set of interfaces. With the combination of the above components, the first and second sets of interfaces are respectively connected to a gas source and a liquid source. When the gas of the gas source is output from the nozzle, it will provide a negative pressure suction to the liquid source to automatically draw the liquid source The spraying material to the nozzle is output along with the gas, so that the nozzle head can spray gas and spraying material on multiple molds at the same time.

Description

Dual fluid spray gun-

The invention relates to a technical field related to a spraying equipment, in particular to a dual-fluid spray gun.

According to the high-temperature mold filling and molding production equipment, before the operation is filled, the mold will be cleaned (air jet) or (and) sprayed material (liquid spray) or other similar materials will be applied to ensure the smooth production of the next filling and molding.

In addition, the total mold assembly formed by high-temperature mold filling is composed of a plurality of molds combined with each other. For example, a generally inverted mold usually has two horizontal alignment forms, or an upper and a lower alignment form.

As shown in Figures 6 and 7, the method of providing gas and spraying material to the mold (not shown in the figure) in the prior art is achieved by using a single-hole spray gun 90. The structure of the single-hole spray gun 90 roughly includes a handle portion 91 with a control trigger 912, a double-layer pipe portion 92 connected with the handle portion 91, and a set of nozzles 93 arranged at the free end of the double-layer pipe portion 92.

The above-mentioned double-layer tube 92 includes an outer tube 922 and an inner tube 924 accommodated in the outer tube 922. One end of the inner and outer tubes 924 and 922 is connected to the handle 91 and the other end is connected to the nozzle 93.

The handle 91 is further connected to a gas source (not shown in the figure) and a liquid source (not shown in the figure) respectively, and the gas (not shown in the figure) of the gas source is controlled by the control trigger 912 along the double-layer pipe 92 The outer pipe 922 flows to the nozzle 93 to output, and to the nozzle A negative pressure is formed at one end of the inner tube 924 at 93. The spray material (not shown in the figure) from the liquid source is sucked by negative pressure and flows to the nozzle 93 along the inner tube 924 of the double-layer tube 92, and is sprayed toward the mold (not shown in the figure) controlled by the spray gun 90.

The above-mentioned structure design of sucking the liquid source (spraying substance) by negative pressure has only a single nozzle. When the user wants to spray two fluids (air source, liquid source) on the mold, he needs to hold the single-hole spray gun 90 for each mold. For spraying, such as a horizontally aligned mold, the user needs to spray the left mold first, and then repeatedly spray the right mold.

However, because the liquid source (spraying substance) is not pressurized, the sprayed water molecules will become very dense, the diameter of the water particles can be greatly reduced, and the spraying can be applied to the surface of the mold more efficiently.

As shown in Figures 6, 8, and 9, in order to simultaneously spray multiple molds with air and liquid sources. Some manufacturers have changed the original double-layer pipe section 92 to a single-layer pipe section 94 design, and preset a plurality of discharge ports 952 in the double-hole nozzle 95, and then cooperated with the liquid storage equipment of the liquid source, using a pressure barrel or The pressure pump and other equipment (due to the design without negative pressure mechanism) push the sprayed substance in the liquid storage device to move to the handle portion 10. The user makes the air source and pressurized liquid source flow along the single-layer pipe section 94 to the double-hole nozzle 95 through the control panel 12, and output through the discharge port 952, so as to spray multiple molds (not shown) at the same time The purpose of this process is that if the pressure is not properly controlled in this process, the pressure of the gas source will be poured back into the liquid storage device that provides the liquid source, or the gas and liquid mixture in the single pipe section 94 is uneven, resulting in poor spray efficiency of the liquid source. .

The spray material (such as mold release agent) related to the liquid source is a special mixing chemistry (such as a mixture of grease and water, or a chemical mixture with the addition of mineral powder) that uses water molecules as a medium. The mixing process will produce physical and chemical damage (such as shear, centrifugal force, high temperature, etc.), which will cause the sprayed material to separate due to physical and chemical damage, and reduce the original functional design of the sprayed material.

Moreover, when the pressurized liquid source (spraying material) is sprayed, the water molecule particles will appear coarse.

In view of this, how to avoid applying positive pressure to the spray material of the liquid source and to avoid repeated spraying actions on the mold assembly multiple times is really necessary for improvement.

In view of the above-mentioned problems and deficiencies of the prior art, the main purpose of the present invention is to provide a dual-fluid spray gun that solves the above-mentioned deficiencies of the prior art through structural innovation and ingenuity.

According to the above objective of the present invention, the present invention provides a dual-fluid spray gun, which includes a handle portion, a tube portion, a spray head, and a plurality of nozzles arranged in the spray head in series. The spray head has a first and second sets of ports and a plurality of air outlets formed on the preset outer end surface, and a plurality of air intake channels formed inside and communicated with the first set of ports and the air outlets, and a plurality of air outlets communicated with each air outlet. The lead-in channel, and at least one distribution channel connected to each lead-in channel and the second set of interfaces. With the combination of the above components, the first and second sets of interfaces are respectively connected to a gas source and a liquid source. When the gas of the gas source is output from the nozzle, it will provide a negative pressure suction to the liquid source to automatically draw the liquid source The spraying material to the nozzle is output along with the gas, so that the nozzle head can spray gas and spraying material on multiple molds at the same time.

10: Handle

12: Control the trigger

20: Double-layer pipe

22: Outer tube

24: inner tube

30: Porous nozzle

31: The first set of interfaces

32: The second set of interfaces

322: Socket

33: air outlet

34: airway

35: Leading Path

352: Extension

36: Allocation Road

37: adjustment hole

40: Nozzle

42: Throat

A: O-ring

S: Adjust the lock

<Previous Skills>

90: Single hole spray gun

91: Handle

912: control trigger

92: Double-layer pipe

93: Nozzle

922: Outer Tube

924: inner tube

94: Single layer pipe

95: Two-hole nozzle

952: Outlet

[Figure 1] is a three-dimensional schematic diagram of an embodiment of the present invention.

[Figure 2] is a schematic partial cross-sectional view of the embodiment shown in Figure 1.

[Fig. 3] is an exploded schematic diagram of partial components of the embodiment shown in Fig. 1. [Fig.

[Figure 4] is a partial cross-sectional view of the spray head of the present invention (1).

[Figure 5] is a partial cross-sectional schematic diagram of the spray head of the present invention (2).

[Figure 6] is a schematic diagram of an embodiment of a single-hole spray gun in the prior art.

[Fig. 7] is a schematic partial cross-sectional view of the embodiment shown in Fig. 6.

[Figure 8] is a schematic diagram of an embodiment of a double-hole spray gun in the prior art.

[Figure 9] is a schematic partial cross-sectional view of the embodiment shown in Figure 8.

Hereinafter, please refer to related drawings to further describe the embodiments of the dual-fluid spray gun of the present invention. In order to facilitate the understanding of the embodiments of the present invention, the same components are described below with the same symbols.

Please refer to FIGS. 1 to 5, the dual-fluid spray gun of the present invention includes a handle portion 10, a tube portion 20, a porous spray head 30 and a plurality of nozzles 40.

The handle portion 10 (previous art) has a preset contour and a control trigger 12, and is connected with a gas source (not shown in the figure) and a liquid source (not shown in the figure).

The above-mentioned double-layer tube portion 20 (as shown in FIG. 2) has an outer tube 22 and an inner tube 24 contained in the outer tube 22. One ends of the aforementioned outer tube 22 and inner tube 24 are connected to the handle portion 10, and respectively transmit gas from a gas source (not shown in the figure) and spray liquid from a liquid source (not shown in the figure).

The above-mentioned porous nozzle head 30 has a first set of ports 31, a second set of ports 32, a plurality of air outlets 33, a plurality of air intake channels 34, a plurality of material channels 35, at least one distribution channel 36, and a plurality of adjustment holes 37.

The first and second sets of ports 31 and 32 (as shown in FIGS. 2, 4 and 5) are concentric and connected recesses formed on the predetermined outer end surface of the porous nozzle head 30. In implementation, the inner wall ring of the second socket 32 is provided with at least one accommodating groove 322 to provide at least one O-ring A for accommodating.

The aforementioned first socket 31 is provided with one end of the outer tube 22 for plugging.

The aforementioned second socket 32 is provided with one end of the inner tube 24 for plugging.

The air outlets 33 (as shown in FIGS. 2 to 5) are respectively recessed and formed on the predetermined outer end surface of the porous nozzle head 30. During implementation, the position and number of each air outlet 33 can be changed according to the combination of different molds, and the position and number are not limited. Therefore, the overall outline of the porous nozzle head 30 may be slightly T-shaped or Y-shaped. Or it has a cross-shaped profile when viewed from above.

The air intake passages 34 (as shown in FIG. 4) are connected to the first set of ports 31 and the matched air outlets 33, and are formed in the porous nozzle head 30.

Each of the guide passages 35 (as shown in FIG. 5) has one end communicated with the matching air outlet 33 and is formed inside the porous nozzle head 30, and the air outlets 33 are concentric. In implementation, the lead channel 35 is adjacent to the end of the air outlet 33 and has an extension end 352 that extends to the inner side of the air outlet 33 and is close to the nozzle 40.

The distribution channel 36 (as shown in FIG. 5) connects each guide channel 35 with the second set of ports 32 and is formed inside the porous nozzle head 30.

The adjustment hole 37 (shown in Figures 2, 3, and 5) is connected to each matching guide passage 35 and the distribution passage 36, and is recessed on the preset outer end surface of the porous nozzle head 30, and provides two adjustment locks S locks Suppose, adjust the size of the connecting cross section between the distribution channel 36 and each matching lead channel 35.

The above-mentioned nozzles 40 (shown in Figures 1 to 3) are matched with the air outlet 33 assembled in the porous nozzle head 30, and have a throat 42 smaller than the cross-sectional area of the air outlet 33, so that the air outlet 33 together define an imitation text The passage of the ditube.

Therefore, the foregoing is an introduction to the components and assembly methods of a preferred embodiment of the dual-fluid spray gun provided by the present invention. Hereinafter, the features of the embodiments of the present invention are introduced as follows.

First, referring to Figures 1 to 5, select the air outlet 33 of the porous nozzle head 30 that matches the number of molds, and connect the air source and the liquid source to the handle part 10 respectively. connection. By controlling the trigger 12 of the handle part 10, the gas of the gas source enters the first set of ports 31 of the porous nozzle head 30 from the outer tube 22 of the double-layer tube part 20, and enters the matched air outlets 33 after passing through the air intake passages 34. Then output from the throat 42 of each nozzle 40.

In the process, since the gas is compressed by the throat 42 when the gas outlet 33 enters the nozzle 40, a high-speed jet is formed and output from the nozzle 40, and a negative pressure is formed at the extension end 352 adjacent to the guide passage 35. And this negative pressure along each guide channel 35, distribution channel 36, the second set of interfaces 32 and the inner tube 24, draw spray material (such as release agent) from the liquid source and then the nozzle 40 accompanied by gas output, because the porous spray head 30 has A plurality of gas outlets 33 matching the number of molds can be used to coat multiple molds with gas and spraying materials at the same time.

Taking a common horizontally aligned mold as an example, when applying gas and spraying material, it only needs to be done once to simultaneously coat the gas and spraying material on the molds on both sides of the horizontal. It is different from the previous technique, which requires repeated operations twice, resulting in a problem of poor efficiency due to time loss.

Expected benefits that can be achieved in this case:

1. Provide the double-layer pipe part 20 to independently connect the gas source and liquid source, and the porous nozzle head 30 can be designed with multi-directional air outlet 33 (for multi-directional spray) according to requirements, which improves productivity and energy saving.

2. The liquid (spraying substance) of the liquid source is exempt from pressure, and the molecular particles of the sprayed liquid (spraying substance) can be greatly reduced.

3. The liquid (spraying material) of the liquid source is not pressurized and will not destroy the functional design of the original chemical product.

4. The liquid (spraying material) of the liquid source is not pressurized. It can reduce energy consumption.

The above description is only the preferred embodiments of the present invention, and is intended to clarify the characteristics of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Equal changes made by those skilled in the art according to the present invention, as well as changes well known to those skilled in the art, should still fall within the scope of the present invention.

10: Handle

12: Control the trigger

20: Double-layer pipe

30: Porous nozzle

40: Nozzle

Claims (3)

A dual-fluid spray gun, which includes A handle with a control trigger; A double-layer tube part having an outer tube and an inner tube accommodated in the outer tube, and one end of the inner tube and the outer tube are connected with the handle part; A multi-hole spray head with a first set of ports, a second set of ports, multiple air outlets, multiple air intake channels, multiple intake channels, and at least one distribution channel; The first and second sockets are concentric and connected recesses formed on the predetermined outer end surface of the porous nozzle head, and the first socket is connected with the outer tube, and the second socket is connected with the inner tube ； Each of the air outlets is respectively recessed and formed on the preset outer end surface of the porous nozzle; Each of the air intake channels is formed inside the porous nozzle head and communicates with the first set of ports and the matched air outlets; Each of the lead-in channels is formed inside the porous nozzle head and communicates with each matching air outlet; and The distribution channel is formed inside the porous nozzle head and communicates with each of the guide channels and the second set of ports; and A plurality of nozzles are assembled to the porous nozzle head to match each of the air outlets, have a cross-sectional area smaller than the air outlet, and communicate and match each of the air outlets and external throat holes. The dual-fluid spray gun as described in claim 1, wherein each of the The feed channel is adjacent to the end of each air outlet and has an extension end extending to the inner side of each air outlet and close to the throat. The dual-fluid spray gun according to claim 1, wherein the porous spray head further has a plurality of adjustment holes that communicate and match each of the guide channel and the distribution channel, and provide a plurality of adjustment locks for locking.

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