Sand casting flow coater

Abstract

The utility model provides a sand mould foundry flow coating device, include: agitator tank and spray assembly, wherein, the communication has coating inlet pipe on agitator tank, spray assembly includes coating outlet pipe, diaphragm pump, pressure stabilizing tank and coating ejection pipe, wherein, one end of coating outlet pipe communicates with the bottom of agitator tank, diaphragm pump is installed on agitator tank, and the other end of coating outlet pipe communicates with the feed pipe of diaphragm pump, pressure stabilizing tank communicates with the discharge pipe of diaphragm pump, and coating ejection pipe is communicated and set between diaphragm pump and pressure stabilizing tank, the sand mould foundry flow coating device of the utility model embodiment can stabilize the output coating, makes the coating thickness even of covering sand mould surface, guarantees product quality.

Description

Technical Field

[0001] This utility model relates to the field of sand casting technology, and in particular to a sand casting flow coating device. Background Technology

[0002] Sand casting flow coating is a modern and efficient coating method that uses a specialized flow coating machine and pumping system to uniformly cover the surface of the sand mold or core with casting coating in a continuous and stable liquid flow.

[0003] Currently, a pneumatic diaphragm pump is installed before the mixing tank outlet of the flow coater to pressurize and spray the coating material, achieving the purpose of flow coating. However, because the pneumatic diaphragm pump operates in a pulse spraying process, the sprayed coating flow rate is unstable, resulting in significant variations in the coating thickness covering the sand mold surface, which affects the final product quality. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0005] Therefore, one objective of this utility model is to provide a sand casting flow coating device that can stably output coating material, so that the coating thickness covering the surface of the sand mold is uniform, thus ensuring product quality.

[0006] To achieve the above objectives, the first aspect of this utility model provides a sand casting flow coating device, comprising: a mixing tank and a spraying assembly, wherein the mixing tank is connected to a paint inlet pipe; the spraying assembly includes a paint outlet pipe, a diaphragm pump, a pressure stabilizing tank, and a paint spraying pipe, wherein one end of the paint outlet pipe is connected to the bottom of the mixing tank; the diaphragm pump is mounted on the mixing tank, and the other end of the paint outlet pipe is connected to the inlet pipe of the diaphragm pump; the pressure stabilizing tank is connected to the outlet pipe of the diaphragm pump; and the paint spraying pipe is connected between the diaphragm pump and the pressure stabilizing tank.

[0007] In addition, the sand casting flow coating device proposed above according to this utility model may also have the following additional technical features: Specifically, the mixing tank includes a tank body, a mixing assembly, and a base, wherein the mixing assembly is mounted on the tank body, and one end of the mixing assembly extends into the interior of the tank body; the base is disposed on the tank body.

[0008] Specifically, the stirring assembly includes a drive motor, a central shaft, and stirring blades. The drive motor is mounted on the tank body, the central shaft is rotatably connected to the tank body, one end of the central shaft is connected to the output shaft of the drive motor, and the other end of the central shaft extends towards the bottom of the tank body; the stirring blades are disposed on the central shaft.

[0009] Specifically, the stirring blades are multiple, and the stirring blades are arranged along the direction of the central axis.

[0010] Specifically, valves are installed on the paint inlet pipe, the paint outlet pipe, and the paint spraying pipe, respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The sand casting flow coating device of the present invention, by adding a pressure stabilizing tank after the diaphragm pump, adjusts the pressure change brought about by each pumping of the diaphragm pump, thereby stabilizing the output of coating material, making the coating thickness covering the surface of the sand mold uniform, and ensuring product quality.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a three-dimensional structural diagram of a sand casting flow coating device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the stirring assembly of a sand casting flow coating device according to an embodiment of the present invention.

[0014] Reference numerals: 1. Mixing tank; 11. Paint inlet pipe; 12. Tank body; 13. Mixing assembly; 131. Drive motor; 132. Central shaft; 133. Mixing blades; 14. Base; 2. Spraying assembly; 21. Paint outlet pipe; 22. Diaphragm pump; 23. Pressure stabilizing tank; 24. Paint spraying pipe. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0016] The sand casting flow coating apparatus of this utility model is described below with reference to the accompanying drawings.

[0017] like Figures 1-2 As shown, the sand casting flow coating device of this utility model embodiment may include: a mixing tank 1 and a spraying assembly 2.

[0018] The mixing tank 1 is connected to a paint inlet pipe 11.

[0019] It should be noted that one end of the paint inlet pipe 11 described in this embodiment is connected to an external paint supply device, thereby providing a continuous supply of paint to this device.

[0020] The spraying assembly 2 includes a paint outlet pipe 21, a diaphragm pump 22, a pressure stabilizing tank 23, and a paint spraying pipe 24.

[0021] One end of the paint outlet pipe 21 is connected to the bottom of the mixing tank 1, the diaphragm pump 22 is installed on the mixing tank 1, the other end of the paint outlet pipe 21 is connected to the feed pipe of the diaphragm pump 22, the pressure stabilizing tank 23 is connected to the discharge pipe of the diaphragm pump 22, and the paint spraying pipe 24 is connected between the diaphragm pump 22 and the pressure stabilizing tank 23.

[0022] It should be noted that one end of the paint spraying pipe 24 described in this embodiment is equipped with a spray gun, which facilitates the uniform spraying of paint onto the surface of the sand mold.

[0023] In the embodiments of this application, the interior of the pressure stabilizing tank 23 is divided into two chambers by an elastic diaphragm (usually made of rubber or fluororubber).

[0024] When the diaphragm pump 22 generates a high-pressure pulse, the flow rate of the coating entering the pressure stabilizing tank 23 instantaneously exceeds the flow rate leaving the outlet, causing the liquid level inside the tank to rise and the pressure to increase. The gas compression process absorbs excess energy (liquid and pressure), which is equivalent to temporarily "storing" some of the excess coating, thereby preventing a sharp rise in pressure at the pipeline outlet.

[0025] When the pump is in a low-pressure pulse (flow trough): the flow rate of paint entering the liquid chamber is less than the flow rate leaving the outlet. At this time, the compressed gas expands, pushes the diaphragm, and squeezes out the previously stored paint to replenish the outlet pipe, thereby preventing the pressure at the pipe outlet from dropping.

[0026] Specifically, the paint to be sprayed is supplied to the interior of the mixing tank 1 by an external paint supply device through the paint inlet pipe 11. After the paint is stirred evenly in the mixing tank 1, it enters the pressure stabilizing tank 23 through the paint outlet pipe 21 and the diaphragm pump 22 under the suction action of the diaphragm pump 22. The pressure stabilizing tank 23 is used to adjust the pressure difference brought by each suction of the diaphragm pump 22. Then the paint is stably sprayed out through the paint spray pipe 24. Under the action of the external spray gun, the paint is evenly covered on the surface of the sand mold, thereby ensuring the quality of the product.

[0027] In one embodiment of this utility model, such as Figure 1 As shown, the mixing tank 1 includes a tank body 12, a mixing assembly 13, and a base 14.

[0028] The stirring assembly 13 is installed on the tank 12, with one end of the stirring assembly 13 extending into the interior of the tank 12, and the base 14 is disposed on the tank 12.

[0029] In one embodiment of this utility model, such as Figure 2 As shown, the stirring assembly 13 includes a drive motor 131, a central shaft 132, and stirring blades 133.

[0030] The drive motor 131 is mounted on the tank body 12, the central shaft 132 is rotatably connected to the tank body 12, one end of the central shaft 132 is connected to the output shaft of the drive motor 131, and the other end of the central shaft 132 extends to the bottom of the tank body 12. The stirring blade 133 is set on the central shaft 132.

[0031] Specifically, after the coating enters the mixing tank 1, the mixing component 13 operates, and the drive motor 131 drives the central shaft 132 to rotate rapidly. Under the action of the mixing blades 133, the coating is fully mixed in the mixing tank 1.

[0032] Understandably, placing the paint in mixing tank 1 and stirring it can prevent the paint from settling, which can not only avoid clogging of the spray gun, but also make the paint sprayed more evenly.

[0033] As one possibility, there may be multiple fan blades of the stirring blade 133, and multiple stirring blades 133 may be arranged along the direction of the central axis 132.

[0034] It is understandable that the number of fan blades on the stirring blade 133 and the number of stirring blades 133 arranged along the central axis 132 can be 2, 3, 4, etc. The specific number can be determined according to the actual situation, and no specific limit is made here.

[0035] In one embodiment of this application, valves are respectively installed on the paint inlet pipe 11, the paint outlet pipe 21, and the paint spraying pipe 24.

[0036] It is understandable that valves are installed on the paint inlet pipe 11, paint outlet pipe 21, and paint spraying pipe 24. The valves are opened before use and closed after use, thereby improving the safety of the device during use.

[0037] In summary, the sand casting flow coating device of this utility model, by adding a pressure stabilizing tank after the diaphragm pump, adjusts the pressure change brought about by each pumping of the diaphragm pump, thereby stabilizing the output of coating material, making the coating thickness covering the surface of the sand mold uniform, and ensuring product quality.

[0038] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sand casting flow coating device, characterized in that, include: A mixing tank (1) and a spraying assembly (2), wherein, The mixing tank (1) is connected to a paint inlet pipe (11); The spraying assembly (2) includes a paint outlet pipe (21), a diaphragm pump (22), a pressure stabilizing tank (23), and a paint spraying pipe (24), wherein, One end of the paint outlet pipe (21) is connected to the bottom of the mixing tank (1); The diaphragm pump (22) is installed on the mixing tank (1), and the other end of the paint outlet pipe (21) is connected to the feed pipe of the diaphragm pump (22); The pressure stabilizing tank (23) is connected to the discharge pipe of the diaphragm pump (22); The paint spray pipe (24) is connected between the diaphragm pump (22) and the pressure stabilizing tank (23).

2. The sand casting flow coating device according to claim 1, characterized in that, The mixing tank (1) includes a tank body (12), a mixing assembly (13), and a base (14), wherein, The stirring assembly (13) is mounted on the tank (12), and one end of the stirring assembly (13) extends into the interior of the tank (12); The base (14) is mounted on the tank (12).

3. The sand casting flow coating device according to claim 2, characterized in that, The stirring assembly (13) includes a drive motor (131), a central shaft (132), and stirring blades (133), wherein, The drive motor (131) is mounted on the tank (12), the central shaft (132) is rotatably connected to the tank (12), one end of the central shaft (132) is connected to the output shaft of the drive motor (131), and the other end of the central shaft (132) extends toward the bottom of the tank (12). The stirring blade (133) is mounted on the central shaft (132).

4. The sand casting flow coating device according to claim 3, characterized in that, The stirring blades (133) have multiple fan blades, and the stirring blades (133) are arranged in multiple directions along the central axis (132).

5. The sand casting flow coating device according to claim 1, characterized in that, Valves are installed on the paint inlet pipe (11), the paint outlet pipe (21), and the paint spraying pipe (24), respectively.

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