A ceramic glazing spray gun

Abstract

This utility model relates to a ceramic glazing spray gun, comprising a spray gun, a solvent tank, and a glaze tank. The glaze inlet end of the spray gun is connected to a three-way switching valve, and the solvent tank, glaze tank, and spray gun are connected via the three-way switching valve. After the spray gun finishes working, the three-way switching valve instantly switches to the solvent tank, and the solvent in the solvent tank flows into the spray gun, replacing the glaze and filling the fluid channel of the spray gun. Then, the solvent is sprayed out in a mist to flush the inside of the spray gun until clear solvent flows out, thus ensuring that the fine orifices of the nozzle are not blocked.

Description

Technical Field

[0001] This utility model relates to the field of glaze spray gun technology, specifically to a ceramic glaze spray gun. Background Technology

[0002] In ceramic product production lines, glazing of the internal cavities of ceramic products is often required. Existing glazing methods include dipping, pouring, brushing, and spraying. Spraying typically uses a spray gun, employing compressed air as the power source. The air is sprayed through the internal channels of the spray gun and out through the air cap, creating a strong negative pressure at the nozzle tip. This negative pressure draws the glaze out of the nozzle, and under the high-speed force of the compressed air, the paint is atomized into fine droplets, which are then evenly sprayed onto the ceramic surface.

[0003] Existing spray guns are generally left to stand after use, waiting for the next application. The glaze residue inside is cleaned periodically. However, the crystallization time varies depending on the composition of the glaze. Hard glaze crystallizes and wears down the internal components of the spray gun, and can also clog the tiny channels of the air cap, requiring high pressure to clear. However, this physically damages the orifice precision, leading to increased maintenance costs. Utility Model Content

[0004] The purpose of this invention is to design a ceramic glazing spray gun that can be cleaned directly after use, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ceramic glazing spray gun, comprising a spray gun, a solvent tank, and a glaze tank, wherein an air cap nozzle is fixedly connected to the output end of the spray gun, the glaze inlet end of the spray gun is connected to a three-way switching valve, the solvent tank, the glaze tank, and the spray gun are connected through the three-way switching valve, and a cleaning button is also provided on the spray gun, the cleaning button being electrically connected to a controller, and the three-way switching valve being electrically connected to the controller.

[0006] Furthermore, both the solvent tank and the glaze tank are connected to the three-way switching valve via threads.

[0007] Furthermore, the three-way switching valve adopts a double-sealing structure.

[0008] Furthermore, the nozzle of the wind cap is detachably connected to a waste liquid recovery cover.

[0009] Furthermore, a sealing cap is fitted onto the nozzle of the wind cap, and an internal threaded hole is provided in the sealing cap. The end of the waste liquid recovery cover is provided with an external thread, and the sealing cap and the waste liquid recovery cover are connected by the internal threaded hole and the external thread.

[0010] Furthermore, the waste liquid recovery hood is equipped with a filter screen.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] When this invention is in operation, the glaze inlet of the spray gun is connected to the glaze tank through a three-way switching valve, and the spray gun sprays normally. After the spray gun finishes working, pressing the cleaning button will cause the controller to control the three-way switching valve to switch to the solvent tank instantly. The solvent in the solvent tank flows into the spray gun, replacing the glaze and filling the fluid channel of the spray gun. Then the solvent is sprayed out in a mist to flush the inside of the spray gun until clear solvent flows out. This ensures that the fine orifices of the air cap nozzle will not be blocked, eliminating the need for high pressure to unclog and reducing maintenance costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] The names of the components shown in the diagram are as follows:

[0016] 1. Spray gun; 2. Glaze tank; 3. Solvent tank; 4. Three-way switching valve; 5. Waste liquid recovery cover; 6. Sealing cap. Detailed Implementation

[0017] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0018] Example: Please refer to Figure 1A ceramic glazing spray gun includes a spray gun 1, a solvent tank 3, and a glaze tank 2. A nozzle cap is fixedly connected to the output end of the spray gun 1. A waste liquid recovery cover 5 is detachably connected to the nozzle cap. The waste liquid recovery cover 5 contains a filter screen that filters out glaze waste after cleaning and collects waste solvent, preventing environmental pollution from the glaze waste. A sealing cap 6 is fitted onto the nozzle cap, with an internal threaded hole. The end of the waste liquid recovery cover 5 has an external thread. The sealing cap 6 and the waste liquid recovery cover 5 are connected via the internal and external threads. During cleaning, the waste liquid recovery cover 5 is directly fixed to the nozzle cap of the spray gun 1 via the sealing cap 6 for easy disassembly and cleaning. The glaze inlet end of the spray gun 1 is connected to a three-way switching valve 4. The solvent tank 3, glaze tank 2, and spray gun 1 are connected via the three-way switching valve 4. Both the solvent tank 3 and glaze tank 2 are threadedly connected to the three-way switching valve 4. The solvent in the solvent tank 3 is directly connected to an external cleaning solvent pipeline via an external circulation cleaning interface. The valve core of the three-way switching valve 4 is made of ceramic or Hastelloy, the valve body is made of 316L stainless steel, and the sealing ring is made of fluororubber or PTFE, which is resistant to glaze particles and chemical solvents. The three-way switching valve 4 adopts a double-sealing structure to ensure zero cross-contamination during valve switching. The spray gun 1 is also equipped with a cleaning button, which is electrically connected to the controller, and the three-way switching valve 4 is also electrically connected to the controller. The glaze inlet of the spray gun 1 is connected to the glaze tank 2 through the three-way switching valve 4, and the spray gun 1 sprays normally. When the spray gun 1 finishes working, pressing the cleaning button will cause the controller to control the three-way switching valve 4 to switch instantly to the solvent tank 3. The solvent in the solvent tank 3 flows into the spray gun 1, replacing the glaze and filling the fluid channel of the spray gun 1. Then the solvent is sprayed out in a mist to flush the inside of the spray gun 1 until clear solvent flows out. This ensures that the fine orifices of the air cap nozzle are not blocked, eliminating the need for high-pressure unblocking and reducing maintenance costs.

[0019] The working principle of this embodiment is as follows: The glaze inlet end of the spray gun 1 is connected to the glaze tank 2 through the three-way switching valve 4 for spraying. After the spray gun 1 finishes working, the waste liquid recovery cover 5 is fixed to the air cap nozzle of the spray gun 1 through the sealing cover 6. Then, after pressing the cleaning button, the controller controls the three-way switching valve 4 to switch to the solvent tank 3 instantly. The solvent in the solvent tank 3 flows into the spray gun 1, replacing the glaze and filling the fluid channel of the spray gun 1. Then the solvent is sprayed out in a mist to flush the inside of the spray gun 1 until clear solvent flows out. This is how it works.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0021] In all the above embodiments, the controller can be a programmable logic controller, PLC, or microcontroller commonly used in the market, used to control the valve switching of the three-way switching valve, etc. The controller can make corresponding action commands to the three-way switching valve according to the feedback signal to control the automatic cleaning of the spray gun and other corresponding operations. The specific control method of the control system is not within the protection scope of this utility model and will not be described in detail here.

[0022] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A ceramic glazing spray gun, characterized in that: The device includes a spray gun (1), a solvent tank (3), and a glaze tank (2). The output end of the spray gun (1) is fixedly connected to a wind cap nozzle. The glaze inlet end of the spray gun (1) is connected to a three-way switching valve (4). The solvent tank (3), the glaze tank (2), and the spray gun (1) are connected through the three-way switching valve (4). The spray gun (1) is also equipped with a cleaning button, which is electrically connected to the controller. The three-way switching valve (4) is electrically connected to the controller.

2. The ceramic glazing spray gun according to claim 1, characterized in that: Both the solvent tank (3) and the glaze tank (2) are connected to the three-way switching valve (4) via threads.

3. The ceramic glazing spray gun according to claim 1, characterized in that: The three-way switching valve (4) adopts a double-sealing structure.

4. The ceramic glazing spray gun according to claim 1, characterized in that: The nozzle of the wind cap is detachably connected to a waste liquid recovery cover (5).

5. The ceramic glazing spray gun according to claim 4, characterized in that: A sealing cap (6) is fitted onto the nozzle of the wind cap. An internal threaded hole is provided in the sealing cap (6). An external thread is provided at the end of the waste liquid recovery cover (5). The sealing cap (6) and the waste liquid recovery cover (5) are connected by the internal threaded hole and the external thread.

6. The ceramic glazing spray gun according to claim 4, characterized in that: The waste liquid recovery hood (5) is equipped with a filter screen.

Images