Ceramic tile production spray gun structure

Abstract

This utility model relates to the field of ceramic tile production technology, and specifically to a spray gun structure for ceramic tile production, including an inner tube and an outer tube. The spray gun structure has an air passage and an oil-gas mixing chamber. Its key feature is that a spiral guide vane, spirally surrounding the inner tube, is provided at the rear end of the air passage. The spiral guide vane divides the air passage, forming a spiral guide channel communicating with the oil-gas mixing chamber. An air inlet is provided on the outer tube, communicating with the spiral guide channel, allowing the spiral guide channel to guide the air input from the air inlet to the front end of the air passage. This utility model ensures that the input air is uniformly and stably directed to the oil-gas mixing chamber, preventing airflow disturbances. This results in extremely uniform mixing of coal tar and air, promoting more complete combustion of coal tar and more stable flame output, thus significantly improving the quality of spray granulation.

Description

Technical Field

[0001] This utility model relates to the field of ceramic tile production technology, and in particular to a spray gun structure for ceramic tile production. Background Technology

[0002] Chinese patent document CN209524509U discloses a technical solution entitled "A spray granulation device using coal tar as fuel". The technical solution includes the following technical features: spray gun, outer tube, inner tube, spray blade, nut, air passage, air inlet, oil-gas mixing chamber, through hole, flame outlet, spray hole, etc.; an air passage is formed between the outer tube and the inner tube, and an air inlet connected to the air passage is opened on the side wall of the outer tube; the oil-gas mixing chamber is located at the front end of the inner tube and has a through hole connected to the air passage. The spray gun simply has an air inlet to allow air to pass into the air passage. Furthermore, because the outer wall of the inner tube is only arc-shaped, it's difficult to guide the airflow evenly. (In actual processing, the axial centerline of the air inlet is rarely perpendicular to the axial centerline of the inner tube, making it difficult for the air entering through the inlet to flow evenly to both sides of the inner tube. Moreover, the unevenly flowing air on both sides of the inner tube will re-converge on the side furthest from the air inlet, further exacerbating the unevenness of airflow in the air passage, making it difficult to guide the airflow evenly.) This easily leads to uneven, unstable, and chaotic airflow in the air passage. Consequently, the airflow to each through-hole is prone to unevenness, instability, and chaotic flow, resulting in uneven mixing of coal tar and air in the oil-gas mixing chamber. This leads to incomplete combustion of coal tar and unstable flameout, which significantly affects the quality of spray granulation.

[0003] Therefore, it is essential to design a spray gun structure for tile production to solve the aforementioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned problems and deficiencies and provide a spray gun structure for ceramic tile production. This spray gun structure can ensure that the input air is uniformly and stably directed to the oil-gas mixing chamber without causing airflow disorder. This allows for extremely uniform mixing of coal tar and air, which in turn facilitates more complete combustion of coal tar and more stable flame output, thereby greatly improving the quality of spray granulation.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A spray gun structure for tile production includes an inner tube and an outer tube. The rear end of the outer tube is closed, and the front end of the inner tube passes through the closed end of the outer tube and is placed inside the outer tube. A ventilation gap is reserved between the inner wall of the outer tube and the outer wall of the inner tube, surrounding the inner tube. The inner hole at the front end of the outer tube forms an oil-gas mixing chamber. The key feature is that a spiral guide vane is provided in a spiral shape around the inner tube at the rear end of the ventilation gap. The spiral guide vane divides the ventilation gap to form a spiral guide channel that communicates with the oil-gas mixing chamber. An air inlet is provided on the outer tube that communicates with the spiral guide channel, and the spiral guide channel can guide the air input from the air inlet to the front end of the ventilation gap.

[0007] Preferably, the spiral guide vane is fixedly mounted on the outer wall of the inner tube.

[0008] Preferably, the spiral guide vane is fixedly mounted on the inner wall of the outer tube.

[0009] Preferably, the inner and outer sides of the spiral guide vane are connected to the outer wall of the inner tube and the inner wall of the outer tube, respectively.

[0010] Preferably, the spiral guide vane, inner tube, and outer tube are all made of stainless steel.

[0011] Preferably, the extension line of the axial center line of the air inlet is staggered from the inner tube, and the extension line of the axial center line of the air inlet passes between the outer wall of the inner tube and the outer wall of the outer tube. Furthermore, the inlet of the air inlet faces the surface of the spiral guide vane facing the oil-gas mixing chamber.

[0012] Preferably, the outer wall of the outer tube is provided with a mating protrusion, and the inner hole of the mating protrusion is connected to the air inlet.

[0013] Preferably, a first convex ring portion is provided on the outer wall of the mating convex tube, and a first external thread is provided on the first convex ring portion.

[0014] Preferably, a second protruding ring is provided on the outer wall of the rear end of the inner tube, and a second external thread is provided on the second protruding ring.

[0015] Preferably, a convex retaining ring is provided on the front end of the inner tube, and the outer circumferential surface of the convex retaining ring is in contact with the inner wall of the outer tube. The convex retaining ring is provided with a plurality of funnel-shaped vent holes, and the large end of the vent holes faces the vent gap. The vent holes are arranged in a ring array around the inner tube.

[0016] The beneficial effects of this utility model are as follows: In the structure of the spray gun for ceramic tile production, the air entering through the air inlet can first enter the front end of the ventilation gap in a spiral flow form through the spiral guide channel, and then enter the oil-gas mixing chamber in a spiral flow form. This avoids the chaotic flow of air in the ventilation gap, and it can make the input air flow into the oil-gas mixing chamber very evenly and stably, without the occurrence of chaotic airflow. This makes the mixing of coal tar and air extremely uniform, thereby making the combustion of coal tar more complete and the flame more stable, which can greatly improve the quality of spray granulation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the spray gun used in ceramic tile production in this utility model.

[0018] Figure 2 This is one of the cross-sectional structural schematic diagrams of the spray gun structure for ceramic tile production in this utility model.

[0019] Figure 3 This is the second cross-sectional structural diagram of the spray gun structure for ceramic tile production in this utility model. Detailed Implementation

[0020] like Figures 1 to 3 As shown, the present invention discloses a spray gun structure for ceramic tile production, comprising an inner tube 1 and an outer tube 2. The rear end of the outer tube 2 is closed, and the front end of the inner tube 1 passes through the closed end of the outer tube 2 and is placed inside the outer tube 2. A ventilation gap 10 is reserved between the inner wall of the outer tube 2 and the outer wall of the inner tube 1, surrounding the inner tube 1. The inner hole at the front end of the outer tube 2 forms an oil-gas mixing chamber 20. To achieve the purpose of this invention, a spiral guide vane 3 is provided in the rear end of the ventilation gap 10, spirally surrounding the inner tube 1. The spiral guide vane 3 divides the ventilation gap 10 to form a spiral guide channel 30 that communicates with the oil-gas mixing chamber 20. An air inlet 21 is provided on the outer tube 2, communicating with the spiral guide channel 30, so that the spiral guide channel 30 can guide the air input from the air inlet 21 to the front end of the ventilation gap 10.

[0021] In the structure of this spray gun for ceramic tile production, the air entering through the air inlet 21 can first enter the front end of the ventilation gap 10 in a spiral flow form through the spiral guide channel 30, and then enter the oil-gas mixing chamber 20 in a spiral flow form. This avoids the air flowing erratically in the ventilation gap 10, and ensures that the input air is delivered to the oil-gas mixing chamber 20 very evenly and stably, without any chaotic airflow. This makes the mixing of coal tar and air extremely uniform, which in turn makes the coal tar combustion more complete and the flame more stable, which greatly improves the quality of spray granulation.

[0022] Based on the aforementioned structure, the following three installation structures for the spiral guide vanes are presented:

[0023] In the first method, the spiral guide vane 3 is fixedly mounted on the outer wall of the inner tube 1. Fixing the spiral guide vane 3 to the outer wall of the inner tube 1 allows for convenient and stable installation and positioning, thereby further improving the applicability of the spray gun structure for ceramic tile production while ensuring reliability.

[0024] In the second configuration, the spiral guide vane 3 is fixedly mounted on the inner wall of the outer tube 2. This fixed mounting ensures stable installation and further improves the reliability of the spray gun structure used for tile production.

[0025] The third type, such as Figure 2 and Figure 3 As shown, the inner and outer sides of the spiral guide vane 3 are connected to the outer wall of the inner tube 1 and the inner wall of the outer tube 2, respectively. This not only facilitates the stable installation and positioning of the spiral guide vane 3, but also forms a more stable spiral guide channel 30 through the spiral guide vane 3, thereby achieving a more stable spiral guide effect and further improving the reliability and applicability of the spray gun structure for ceramic tile production.

[0026] The connection between the spiral guide vane 3 and the inner tube 1 and the outer tube 2 can be either a fixed connection or a tight abutment connection. When the tight abutment connection is adopted, the spiral guide vane 3 is tightly clamped and positioned by the outer wall of the inner tube 1 and the inner wall of the outer tube 2, which can meet the needs of actual production and use.

[0027] The spiral guide vane 3, inner tube 1, and outer tube 2 are all made of stainless steel. This not only achieves high structural strength but also effectively improves durability, thereby contributing to further enhancing the reliability and applicability of the spray gun structure used in ceramic tile production.

[0028] like Figures 1 to 3 As shown, the extension of the axial center line of the air inlet 21 is staggered from the inner tube 1, and the extension of the axial center line of the air inlet 21 passes between the outer wall of the inner tube 1 and the outer wall of the outer tube 2. Furthermore, the inlet of the air inlet 21 faces the surface of the spiral guide vane 3 towards the oil-gas mixing chamber 20. This allows the air input through the air inlet 21 to be blown more comprehensively and stably onto the spiral guide surface of the spiral guide vane 3, and the spiral guide vane 3 to guide the air more comprehensively and stably to the front end of the ventilation gap 10 before entering the oil-gas mixing chamber 20. This helps to further improve the reliability and applicability of the spray gun structure used for ceramic tile production.

[0029] like Figure 1 and Figure 2As shown, a connecting protrusion 22 is provided on the outer wall of the outer tube 2, and the inner hole of the connecting protrusion 22 is connected to the air inlet 21. This facilitates the connection of the air pipe, thereby improving the convenience of use.

[0030] like Figure 2 As shown, a first protruding ring portion 221 is provided on the outer wall of the docking protrusion 22, and a first external thread 222 is provided on the first protruding ring portion 221. This not only enables the docking protrusion 22 to have high structural strength, but also facilitates the stable and reliable docking of related air supply pipes with the docking protrusion 22, thereby helping to further improve the reliability and applicability of the spray gun structure for ceramic tile production.

[0031] like Figure 2 and Figure 3 As shown, a second protruding ring portion 11 is provided on the outer wall of the rear end of the inner tube 1, and a second external thread 12 is provided on the second protruding ring portion 11. This not only improves the structural strength of the inner tube 1, but also facilitates the improvement of the stability and reliability of the connection between the coal tar supply pipe and the inner tube 1, thereby helping to further improve the reliability and applicability of the spray gun structure for ceramic tile production.

[0032] like Figure 2 and Figure 3 As shown, a convex retaining ring 4 is provided on the front end of the inner tube 1, and the outer circumferential surface of the convex retaining ring 4 is in contact with the inner wall of the outer tube 2. The convex retaining ring 4 has several funnel-shaped vent holes 41, with the larger end of the vent holes 41 facing the venting gap 10. The vent holes 41 are arranged in a ring array around the inner tube 1. This not only enables the convex retaining ring 4 to accurately and stably position the front end of the inner tube 1, but also prevents coal tar from entering the venting gap 10 and allows the air entering the oil-gas mixing chamber 20 to have a greater velocity. This facilitates faster and more stable dispersion of coal tar and faster replenishment of air, thereby enabling more complete combustion of coal tar. This helps to further improve the reliability and applicability of the spray gun structure used for ceramic tile production.

[0033] In actual manufacturing and use, the spray gun structure for tile production can also be equipped with a spray blade with spray holes (not shown in the figure) and a nut with flame outlet (not shown in the figure) on the front end of the outer tube 2. The spray blade and nut can directly adopt the existing installation structure, which can better meet the needs of actual use.

Claims

1. A spray gun structure for ceramic tile production, comprising an inner tube (1) and an outer tube (2), wherein the rear end of the outer tube (2) is closed, and the front end of the inner tube (1) passes through the closed end of the outer tube (2) and is placed in the outer tube (2), wherein a ventilation gap (10) surrounding the inner tube (1) is reserved between the inner wall of the outer tube (2) and the outer wall of the inner tube (1), and the inner hole at the front end of the outer tube (2) constitutes an oil-gas mixing chamber (20), characterized in that: The rear end of the ventilation gap (10) is provided with a spiral guide plate (3) that spirals around the inner tube (1). The spiral guide plate (3) divides the ventilation gap (10) to form a spiral guide channel (30) that communicates with the oil-gas mixing chamber (20). The outer tube (2) is provided with an air inlet (21) that communicates with the spiral guide channel (30), and the spiral guide channel (30) can guide the air input from the air inlet (21) to the front end of the ventilation gap (10).

2. The tile production spray gun structure according to claim 1, characterized in that: The spiral guide vane (3) is fixedly installed on the outer wall of the inner tube (1).

3. The tile production spray gun structure according to claim 1, characterized in that: The spiral guide vane (3) is fixedly installed on the inner wall of the outer tube (2).

4. The tile production spray gun structure according to claim 1, characterized in that: The inner and outer sides of the spiral guide vane (3) are connected to the outer wall of the inner tube (1) and the inner wall of the outer tube (2), respectively.

5. The tile production spray gun structure according to any one of claims 1 to 4, characterized in that: The spiral guide vane (3), inner tube (1) and outer tube (2) are all made of stainless steel.

6. The tile production spray gun structure according to claim 1, characterized in that: The extension of the axial center line of the air inlet (21) is staggered from the inner tube (1), and the extension of the axial center line of the air inlet (21) passes between the outer wall of the inner tube (1) and the outer wall of the outer tube (2). The inlet of the air inlet (21) is also directed toward the surface of the spiral guide vane (3) toward the oil-gas mixing chamber (20).

7. The tile production spray gun structure according to claim 1, characterized in that: The outer wall of the outer tube (2) is provided with a connecting protrusion (22), and the inner hole of the connecting protrusion (22) is connected to the air inlet (21).

8. The tile production spray gun structure according to claim 7, characterized in that: The outer wall of the connecting protrusion (22) is provided with a first protruding ring (221), and the first protruding ring (221) is provided with a first external thread (222).

9. The tile production spray gun structure according to claim 1, characterized in that: The inner tube (1) has a second protruding ring (11) on the outer wall at the rear end, and the second protruding ring (11) has a second external thread (12).

10. The tile production spray gun structure according to claim 1, characterized in that: A convex retaining ring (4) is provided on the front end of the inner tube (1), and the outer circumferential surface of the convex retaining ring (4) is in contact with the inner wall of the outer tube (2). A number of funnel-shaped vent holes (41) are provided on the convex retaining ring (4), and the large end of the vent hole (41) faces the vent gap (10). The vent holes (41) are arranged in a ring array around the inner tube (1).

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