Simple device for measuring flattening effect of coating spray gun

Abstract

The utility model discloses a simple device for measuring the flattening effect of a coating spray gun, which comprises a bottom rod and a spray gun arranged in the middle of the bottom rod and provided with an upward nozzle, adapters are arranged at the two ends of the bottom rod, vertical columns are arranged on the adapters along the vertical direction, the top ends of the two vertical columns are respectively connected with the two ends of a long shaft rod, and the long shaft rod is connected with the long shaft rod. A short shaft rod perpendicular to the long shaft rod is arranged in the middle of the long shaft rod. The spray gun is suitable for development of equipment using the spray gun and customer production sites; the size is small, the structure is simple and the measurement effect is obvious; the whole body can be made of stainless steel, so that material cost and processing cost are low; disassembly and assembly are convenient, and cleaning is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of film coating, in particular to a simple device for measuring the flattening effect of a coating spray gun. Background Art

[0002] Coating spray guns are often used in the film coating process of solid preparations. Commonly used coating spray guns contain one control gas, one atomizing gas, one flattening gas and one coating liquid. The control gas controls the on and off of the coating liquid, the atomizing gas atomizes the coating liquid, and the flattening gas makes the atomized gas form an ellipse. In the coating process of solid preparations, the distance from the spray gun to the tablet bed, and the long and short axis sizes of the ellipse formed by the atomized coating liquid affect the quality of the coating, so it is often necessary to adjust the gun before the coating process.

[0003] When adjusting the gun, first determine the distance between the spray gun and the tablet bed, and then control the size of the elliptical atomizing airflow by adjusting the atomizing air pressure and the flattening air pressure. However, in actual coating process applications, it is impossible to accurately measure the size of the major and minor axes of the ellipse, or adjust the spray gun parameters based on the actual coating quality. This causes trouble for the parametric optimization design of the coating process and is not conducive to the refined research of the coating process.

[0004] Only the manufacturers of coating spray guns have the testing conditions to accurately measure the flattening effect of coating spray guns, and the testing equipment is complex and costly. Neither coating machine manufacturers nor their users have the conditions for accurate measurement. Utility Model Content

[0005] In order to solve the problem that the above-mentioned existing coating spray gun flattening effect cannot accurately measure the size of the major axis and the minor axis of the ellipse in actual coating process application, the utility model provides a simple device for measuring the flattening effect of the coating spray gun.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A simple device for measuring the flattening effect of a coating spray gun comprises a bottom rod and a spray gun with a nozzle facing upwards, both ends of the bottom rod are provided with adapters, and columns are provided on the adapters in a vertical direction, the top ends of the two columns are respectively connected to the two ends of a long shaft rod, and a short shaft rod perpendicular to the long shaft rod is provided in the middle of the long shaft rod.

[0008] Preferably, the adapter is fixed to the bottom rod and the column by means of set screws, so that the bottom rod and the column of different lengths can be easily replaced.

[0009] Preferably, the long shaft rod is fixed to the column by means of set screws, so as to facilitate replacement of long shaft rods of different sizes. The long shaft rod and the short shaft rod are centrally fixed by welding or set screws, and the center point of their intersection corresponds to the nozzle position.

[0010] Preferably, the bottom rod, the column, the long axis rod and the short axis rod are all engraved with scales to facilitate measurement of the coverage of the coating liquid sprayed from the nozzle.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model is suitable for the development of equipment using a spray gun and for customer production sites; it has a small size, a simple structure, and an obvious measuring effect; the entire body can be made of stainless steel, and the material and processing costs are low; it is easy to disassemble and assemble, and is simple and convenient to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the range of spraying coating liquid by a spray gun according to an embodiment of the utility model;

[0014] Figure 3 This is a schematic diagram of a scale being arranged on the long shaft rod according to an embodiment of the utility model.

[0015] In the figure: 1, bottom rod, 2, spray gun, 201, nozzle, 202, atomizing gas inlet, 203, control gas inlet, 204, coating liquid inlet, 205, flattening gas inlet, 3, long axis rod, 4, adapter, 5, column, 6, short axis rod, 7, scale. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] like Figures 1 to 3As shown, the embodiment of the utility model includes a bottom rod 1 and a spray gun 2 with a nozzle 201 facing upward and arranged in the middle of the bottom rod 1, adapters 4 are arranged at both ends of the bottom rod 1, and columns 5 are arranged on the adapter 4 in the vertical direction, the top ends of the two columns 5 are respectively connected to the two ends of the long axis rod 3, and a short axis rod 6 perpendicular to the long axis rod 3 is arranged in the middle.

[0019] Preferably, the adapter 4 is fixed to the base rod 1 and the column 5 by means of set screws, so as to facilitate replacement of base rods 1 and columns 5 of different lengths; the long axis rod 3 is fixed to the column 5 by means of set screws, so as to facilitate replacement of long axis rods 3 of different sizes, and the long axis rod 3 and the short axis rod 6 are centered by welding or set screws, and the center point of their intersection corresponds to the position of the nozzle 201.

[0020] When it is necessary to measure the flattening effect of the spray gun 2, the specifications of the bottom rod 1, the column 5, the long axis rod 3 and the short axis rod 6 are determined according to the specifications of the spray gun 2. After the device is assembled, the spray gun 2 is fixed at the center of the bottom rod 1, and the nozzle 201 is facing upwards to correspond to the intersection of the long axis rod 3 and the short axis rod 6;

[0021] In this embodiment, the coating liquid flow rate is adjusted to 10 g / min, the control gas pressure is 0.4 MPa, the atomization pressure is 0.1 MPa, and the flattening pressure is 0.12 MPa. The column 5 is adjusted up and down until the nozzle 201 of the spray gun 2 is 120 mm in height, and the control gas inlet 203 is opened. The coating liquid is sprayed from the nozzle 201 and sprayed onto the scale 7 of the major axis rod 3 and the minor axis rod 6. After 5 seconds, the control gas inlet 203, the atomization gas inlet 202 and the flattening gas inlet 205 are closed in turn, and the droplet coverage length on the major axis rod 3 and the minor axis rod 6 is read, which is the major axis length and minor axis length of the elliptical cross section.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple device for measuring the flattening effect of a coating spray gun, characterized in that: It comprises a bottom rod and a spray gun with a nozzle facing upwards, which is arranged in the middle of the bottom rod. Both ends of the bottom rod are provided with adapters, and columns are arranged on the adapters in the vertical direction. The top ends of the two columns are respectively connected to the two ends of the long axis rod, and a short axis rod perpendicular to the long axis rod is arranged in the middle of the long axis rod.

2. A simple device for measuring the flattening effect of a coating spray gun according to claim 1, characterized in that: The adapter is fixed to the bottom rod and the column by means of set screws, so that the bottom rod and the column of different lengths can be easily replaced.

3. A simple device for measuring the flattening effect of a coating spray gun according to claim 1, characterized in that: The long shaft rod is fixed to the column by means of set screws, which facilitates the replacement of long shaft rods of different sizes. The long shaft rod and the short shaft rod are centrally fixed by welding or set screws, and the center point of their intersection corresponds to the nozzle position.

4. A simple device for measuring the flattening effect of a coating spray gun according to claim 1, characterized in that: The bottom rod, the upright column, the long axis rod and the short axis rod are all engraved with scales, so as to facilitate the measurement of the coverage of the coating liquid sprayed from the nozzle.

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