Split flexible air blowing box device

Abstract

A split-type flexible air injection box device, in which there is a single ventilation duct inside the air injection box; a plurality of air dispersion ducts penetrating the vertical direction of the box body are arranged in a diamond shape and distributed in the ventilation duct; there are a plurality of long strip-shaped air injection nozzles on the top plate of the air injection box facing the fabric side, arranged horizontally around the air dispersion duct; the front end of the air injection box is a front cover plate that can be separated from the hot air duct of the oven; its rear cover plate can be disassembled; and there are pulleys on both sides of the air injection box, and there are slide rails under the pulleys, and the air injection box can move backward along the slide rails. The technical solution of the present invention has the advantages of being easy to disassemble, clean and repair; the surface air pressure is uniform, which does not affect the stenter setting effect; the turbulence phenomenon between the air injection nozzles is low and the noise is small, etc.

Description

Technical Field

[0001] The present invention relates to an air blowing box device inside a stentering and setting machine for the textile printing and dyeing industry, in particular to a split flexible air blowing box device. Background Art

[0002] In the known printing and dyeing industry, there are multiple air blowing box devices inside the oven of a stentering and setting machine for the textile printing and dyeing industry, symmetrically distributed on the upper and lower sides of the fabric. On the side of the air blowing box device facing the fabric, there are multiple hot air nozzles that spray hot air onto the fabric surface. Inside the air blowing box device, there is an air duct, which is fixedly connected to the hot air duct of the stentering and setting machine oven, forming an integral fixed structure in the shape of a U or an F.

[0003] Due to the fixed structure, when performing internal cleaning and repair, it is necessary to disassemble the whole, which is difficult and time-consuming.

[0004] In addition, for the traditional air blowing box device, in order to recover the sprayed hot air and prevent the hot air from accumulating on the fabric surface, a design of multiple groups of horizontally parallel air ducts inside a single air blowing box device is adopted. A wind dispersing pipe is placed between the air ducts. The wind dispersing pipe is circular, about 5 - 8 cm in size, perpendicular to the air blowing box device and directly connected to the upper and lower surfaces of the air blowing box device, and is isolated from the air duct at the same time, transferring the hot air on the fabric surface to the back of the air blowing box device.

[0005] This structure forms obviously separated strip-shaped low-pressure areas on the fabric surface, resulting in a stepped drop in the air pressure on the fabric surface; for the design of multiple groups of air ducts, there will be a phenomenon of uneven air pressure inside each air duct; the air pressure at the front and rear ends of each air duct will also change. Therefore, for the air blowing box device with the traditional design, the air pressure generated on the fabric surface has large differences in each area and obvious drops, thus affecting the balance of the surface tension of the fabric and being unfavorable to the stability of the stentering and setting effect of the fabric.

[0006] At the same time, corresponding to the above-mentioned structure of multiple groups of parallel air ducts, the adopted air nozzles are small round holes with a diameter of about 0.5 - 1 cm, which are arranged evenly in the horizontal and vertical directions on the surface. The hot air sprayed by adjacent air nozzles will generate turbulent flow with each other, affecting the dehumidification and setting effect of the fabric; in addition, for the small round hole air nozzles, the sprayed wind force is conical and the air pressure is relatively concentrated, which will also cause uneven pressure on the fabric surface, affecting the balance of the surface tension of the fabric and being unfavorable to the stability of the stentering and setting effect of the fabric; and the high air pressure and the turbulent flow phenomenon generated when the small round holes spray air also lead to high noise during operation, which also has an adverse impact on the working environment.

[0007] Therefore, the traditional air blowing box device has defects such as difficult disassembly, cleaning and repair of the overall structure; uneven surface air pressure, affecting the stability of the stentering and setting function; turbulent flow between the air nozzles, affecting the dehumidification and setting effect; and excessive noise in the working state.

[0008] Currently, there is no good comprehensive solution to the defects of the above-mentioned traditional air jet box device. For example, in the technical solution of the "hot air supply system of a stenter" recorded in the patent with the authorization announcement number CN203866566U, a structure is adopted in which air jet nozzles and air dispersion holes are set up in sections, and the air jet nozzles and air dispersion holes of the upper and lower air jet boxes are opposite to each other. Although it well solves the problem that the air jet nozzles interfere with each other, affecting the dehumidification and setting effect, it increases the unevenness of the air pressure on the fabric surface, making the stability of the stenter work worse. In fact, it sacrifices the main working indexes of the stenter to achieve the improvement of local performance, and cannot be regarded as an effective solution. Summary of the Invention

[0009] The purpose of the present invention is to solve the defects of the traditional air jet box device, such as difficult disassembly, cleaning and repair of the overall structure, uneven surface air pressure, serious interference between air jet nozzles and high noise, so as to solve various problems existing in the current technology.

[0010] To achieve the above purpose, a split-type flexible air jet box device provided by the present invention has a ventilation duct inside the air jet box. The front end of the ventilation duct is a ventilation opening connected to the hot air duct of the oven, and the rear end is a sealed rear cover plate. There are a plurality of air jet nozzles on the top plate of the air jet box facing the fabric side, and there are a plurality of air dispersion ducts penetrating the vertical direction of the box body inside the ventilation duct.

[0011] To solve the problem of uneven air pressure on the fabric surface, the air jet box in the technical solution of the present invention has a single ventilation duct; and the air dispersion ducts are arranged in a diamond pattern in the ventilation duct, so that the air dispersion ducts in different horizontal arrangements are staggered in the vertical position, presenting a vertical and horizontal staggered arrangement state; thereby evenly distributing the air return volume horizontally and vertically, making the air pressure on the fabric surface more balanced, avoiding the appearance of strip-shaped low-pressure zones; and helping to improve the effect of the stenter function.

[0012] As an optimization, the aforementioned air dispersion duct is a large round hole structure with a diameter of 8-12 cm, and the air dispersion efficiency is higher.

[0013] As an optimization, the lateral array spacing of the aforementioned air dispersion ducts is 8-12 cm, which is basically the same as the diameter of the air dispersion ducts; the lateral spacing of the air dispersion ducts in the same horizontal array is 24-48 cm, about 3-4 times the diameter of the air dispersion ducts. In such an arrangement state, the spacing between adjacent air dispersion ducts is about 2-4 times the diameter of the air dispersion ducts, which not only ensures the air dispersion efficiency but also leaves sufficient space for arranging the air jet nozzles.

[0014] To solve the noise problem and provide a more uniform air jet state, the air jet nozzles in the solution of the present invention adopt a long strip shape.

[0015] Optimized, the size of the air nozzle is 3 - 4 cm in length, 0.4 - 0.6 mm in width, and the short side has rounded corners.

[0016] The air flow ejected by the strip-shaped fan-shaped air nozzle is fan-shaped, and the wind force is softer than that of the traditional round hole design, which well solves the defect that the wind force of the traditional small round hole air nozzle is too concentrated, making the wind pressure on the fabric surface more balanced, thus optimizing the stenter setting effect.

[0017] To overcome the serious problem of interference flow between the air nozzles, the air nozzles are arranged in a scattered horizontal arrangement. Among them, there are two groups of horizontal air nozzle arrays between the horizontal air dispersion ducts; on the vertical sides of the air dispersion ducts, there is a group of horizontal air nozzle arrays on each side, thus forming a structure where the air nozzles surround the air dispersion ducts.

[0018] As an optimization, for two vertically adjacent groups of air nozzle arrays, the air nozzles are staggered in the horizontal position, so the ejected air flows of the two adjacent air nozzle arrays will not overlap, thus reducing the interference flow phenomenon.

[0019] And because the interference flow phenomenon is reduced and the ejected air flow is softer, the noise during the operation of the air nozzle is also reduced, thus improving the working environment of the machine equipment.

[0020] To solve the problem that the traditional structure is difficult to disassemble, the front end of the air nozzle box of the technical solution of the present invention is a front cover plate that can be separated from the hot air duct of the oven; and there are pulleys on both sides of the air nozzle box, and there are connecting and fastening slide rails inside the oven. Below the pulleys on both sides of the air nozzle box, the air nozzle box can move backward along the slide rails, and at this time, the front cover plate of the air nozzle box is separated from the hot air duct.

[0021] As an optimization, there is a high-temperature resistant elastic damping gasket at the joint between the front cover plate and the hot air duct of the oven, which can provide a more sealed working environment and reduce the leakage of hot air; at the same time, when the air nozzle box is docked with the hot air duct of the oven, it reduces the impact force and is beneficial to extending the service life of the equipment.

[0022] For the air nozzle box of the technical solution of the present invention, its rear cover plate can be disassembled, and the inside of the air nozzle box can be cleaned through the opening of the rear cover plate.

[0023] As an optimization, in the technical solution of the present invention, there is a horizontal air baffle in the middle of the ventilation duct, and there is a gap between the rear of the air baffle and the rear cover plate. This structure helps to balance the air pressure of the air nozzles in different areas before and after the air nozzle box, and further optimizes the stenter setting effect on the fabric.

[0024] The advantages and effective benefits of the present invention are that it provides a split-type flexible air nozzle box device, which has the advantages of a split-type structure, being easy to disassemble, clean and repair; uniform surface air pressure, not affecting the stenter setting effect; low interference flow phenomenon and low noise between the air nozzles, thus solving various problems existing in the current technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a traditional design solution;

[0026] Figure 2 is Figure 1 a schematic diagram of the air flow in the top view state of the solution shown;

[0027] Figure 3 is a schematic diagram of the air flow in a partial cross-section of the solution shown in FIG. 1;

[0028] Figure 4 is a schematic structural diagram of other prior design solutions;

[0029] Figure 5 is a three-dimensional structural diagram of the first embodiment of the design solution of the present invention;

[0030] Figure 6 is Figure 5 a top view of the embodiment shown;

[0031] Figure 7 is Figure 5 a bottom view of the embodiment shown;

[0032] Figure 8 is Figure 5 a left view of the embodiment shown;

[0033] Figure 9 is Figure 5 a cross-sectional view of the embodiment shown along the Figure 6 D-D line direction;

[0034] Figure 10 is Figure 9 a schematic diagram of the air flow of the cross-sectional view shown;

[0035] Figure 11 is Figure 5 a schematic diagram of the internal air flow of the embodiment shown;

[0036] Figure 12 is a side perspective view of the second embodiment of the present invention;

[0037] Figure 13 is a schematic structural diagram of the present invention installed in an oven system.

[0038] In the figure, 1 is an air injection box; 2 is an air injection nozzle; 3 is a diffuser duct; 4 is a pulley; 5 is a front cover plate; 6 is a rear cover plate; 7 is a ventilation duct; 8 is a slide rail; 9 is an elastic damping gasket; 10 is a hot air duct; 11 is an oven frame; 12 is a fabric. DETAILED DESCRIPTION OF THE INVENTION

[0039] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0040] As Figure 1 shown, in the traditional air jet box 1, there are multiple isolated independent ventilation ducts 7 inside. On the side facing the fabric of the ventilation duct 7, there are air jet nozzles 2 arranged in regular horizontal and vertical patterns. Between the ventilation ducts 7, there is a group of independent air dispersion ducts 3 that penetrate the vertical direction of the air jet box 1.

[0041] For the traditional air jet box 1, the front ends of the independent ventilation ducts 7 are fixedly connected to the hot air ducts of the stenter oven, and the rear end is closed. When cleaning the air jet box 1, it is necessary to disassemble the screws to separate the air jet box 1 from the hot air duct, and then clean and repair it, which is difficult and time-consuming.

[0042] As Figure 2 shown, the hot air indicated by the arrow flows from the front end to the rear end of the air jet box 1. Since the ventilation ducts 7 are independent of each other and the distances from the hot air ducts are different, the pressures in the ventilation ducts 7 are not the same.

[0043] Since the air dispersion ducts 3 are arranged in horizontal strips, a strip-shaped low-pressure area A without air jet nozzles 2 is formed, and the areas B1 - B2 of the ventilation ducts 7 where the air jet nozzles 2 are concentrated have a significantly higher air jet pressure than area A.

[0044] Inside a single ventilation duct 7, in the front B1 area, the air flow pressure is also higher than that in the rear B2 area.

[0045] Therefore, in the design of this traditional air jet box, the air pressure differences in each area on its surface are large and the drop is obvious, thus affecting the balance of the surface tension of the fabric and being unfavorable for the stability of the stenter setting effect of the fabric.

[0046] As Figure 3 shown, in the traditional air jet box design, between multiple air jet nozzles 2, the ejected airflows interfere with each other in area C to form turbulent flows, thus affecting the dehumidification and setting effect of the fabric and also generating high wind noise.

[0047] As Figure 4 shown, in the technical solution of the "hot air supply system of a stenter" recorded in the patent with the authorized announcement number CN203866566U, the air jet nozzles 2 of the upper and lower air jet boxes and the air dispersion ducts 3 are arranged opposite to each other, and it can be considered that the turbulent flow phenomenon is basically solved. However, the airflow flowing in the direction indicated by the arrow will generate a strong regional pressure, causing the fabric 12 to deform, so the stability of the stenter setting work is worse. In fact, the main working indicators of the stenter are sacrificed to achieve the improvement of local performance, and it cannot be regarded as an effective solution.

[0048] As Figure 5 shown in the first embodiment of the technical solution of the present invention, inside the air injection box 1, there is only a single ventilation duct 7, and the air dispersion ducts 3 with a diameter of 10 cm are arranged in a diamond pattern inside the ventilation duct, so that the air dispersion ducts 3 arranged horizontally in different rows are staggered vertically, presenting a vertical and horizontal staggered arrangement state; for the air dispersion ducts 3 in different horizontal rows, their vertical spacing is 10 cm; for the air dispersion ducts 3 in the same horizontal row, their horizontal spacing is 35 cm. The air injection nozzles 2 used are round-edge rectangular holes of 0.5 cm X 3.5 cm; they are arranged horizontally and dispersed around the periphery of the air dispersion duct 3; the front end of the air injection box 1 has a front cover plate 6; the tail of the air injection box 1 has a detachable rear cover plate 6, and in addition, there are pulleys 4 on both sides of the air injection box 1.

[0049] As Figure 6 shown, Figure 5 In the top view of the embodiment, the arrangement form of the air injection nozzles 2 lies in that there are two groups of horizontally arranged air injection nozzle 2 arrays between the air dispersion ducts 3 in the same horizontal direction; on both vertical sides of the air dispersion duct 3, there is one group of horizontal air injection nozzle 2 arrays each.

[0050] In this arrangement, there are two rows of air injection nozzle 2 arrays between the air dispersion ducts 3 in the same horizontal direction, and there are also two rows of air injection nozzle 2 arrays between the air dispersion ducts 3 in different horizontal directions. Therefore, the arrangement of the air injection nozzles 2 and the air dispersion ducts 3 tends to be average in each area, and the high-pressure area B formed by the airflow ejected from the air injection nozzles 2 intersects with the low-pressure area A formed by the air dispersion ducts 3, avoiding the phenomenon of obvious division between the high-pressure area and the low-pressure area and uneven air pressure in the traditional technical solution. Moreover, the area of the low-pressure area formed by the dispersed air dispersion ducts 3 is significantly lower than that of the traditional solution, indicating that the effective air injection area of the technical solution of the present invention is higher than that of the traditional design, and there is an obvious improvement in work efficiency.

[0051] As Figure 7 shown, the ventilation duct 7 of this embodiment penetrates the vertical plane of the entire air injection box 1.

[0052] As Figure 8 shown, the front cover plate 5 unfolds outward at the edge of the ventilation duct 6 and has an elastic damping gasket 9 on its surface.

[0053] As Figure 9 shown, along Figure 6 the vertical sectional view of the D-D line, it can be seen that for the vertical ventilation duct 7, its spacing is equal to the diameter of the ventilation duct 7, and within this spacing range, there are only two groups of air injection nozzles 2.

[0054] As Figure 10 shown, when the embodiment of the present invention works, the turbulence situation between adjacent air injection nozzles 2 is greatly reduced.

[0055] AsFigure 11 As shown, the design of a single ventilation duct 7, combined with a large-diameter air-diffusing duct 3 inside the ventilation duct 7, forms a function of diverting the hot air flow, making the air pressure in each area of the ventilation duct 7 relatively average, thereby optimizing the balance of the air flow pressure ejected from each air nozzle 2.

[0056] As Figure 12 shown, inside the ventilation duct 7, a horizontal air separation plate 13 is installed, and there is a gap between the air separation plate 13 and the rear cover plate 6. Thus, an independent ventilation channel for the tail end is formed below the ventilation duct 7, making the air flow ejected from the air nozzles at the head and tail of the air spraying box 1 more balanced, and also contributing to the balance of the air spraying pressure in each area of the air spraying box.

[0057] As Figure 13 shown, the hot air duct 10 is fixed on one side of the oven frame 11. The hot air duct 10 has upper and lower ports, which are respectively connected to the upper and lower air spraying boxes 1 to form an F-shaped structure. There is a fabric 12 passing horizontally between the two air spraying boxes 1. The side of the two air spraying boxes 1 facing the fabric is the area where the air nozzles are located. The technical solution of the present invention adopts a split-type air spraying box design. There are pulleys 4 on both sides of the air spraying box. Below the pulleys, there is a slide rail 8 firmly connected to the oven frame 11. The air spraying box 1 can move on the slide rail, so that the front cover plate 5 of the air spraying box 1 is separated from or in contact with the port of the hot air duct. The surface of the front cover plate 5 has an elastic damping gasket 9, which not only plays a role in sealing the duct and reducing the leakage of hot air, but also can reduce the impact force when the air spraying box 1 is docked with the hot air duct 10, which is beneficial to extending the service life of the equipment.

[0058] As shown in the figure, the rear cover plate 6 of the technical solution of the present invention can be disassembled. During simple cleaning work, the inside can be directly cleaned from the tail end of the air spraying box. When the equipment needs to be overhauled, the air spraying box can also be easily separated, reducing the working intensity and saving the required working time.

[0059] The split-type structure of the technical solution of the present invention can also replace the air spraying box with different nozzle structures according to the stretching and shaping characteristics of different fabrics, so that the overall equipment works in a better state.

[0060] As described above, the present invention provides a split-type flexible air injection box device, which has the advantages of adopting a split structure, being easy to disassemble, clean and repair; having uniform surface air pressure and not affecting the stenter setting effect; having a low turbulence phenomenon and low noise between the air injection nozzles, etc., thereby solving various problems existing in the current technology. The above description is only the preferred embodiment of the present invention. In the actual deployment process of the present invention, due to different production process requirements, it is impossible to completely operate according to the above embodiments. Therefore, the embodiments of the present invention should not be understood as a limitation to the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and adjustments can still be made, and these improvements and adjustments should also be regarded as within the effective protection scope of the present invention.

Claims

1. A split-type flexible air blowing box device, in which there is a ventilation duct in the air blowing box. The front end of the ventilation duct is a ventilation opening connected to the hot air duct of the oven, and the rear end is a sealed rear cover plate. There are a plurality of air blowing nozzles on the top plate of the air blowing box facing the fabric side. There are multiple air dispersing ducts penetrating the vertical direction of the box body in the ventilation duct. It is characterized in that: Inside the air injection box is a single ventilation duct; the air dispersion ducts are arranged in a diamond pattern within the ventilation duct, presenting a crisscross arrangement; the air injection nozzles are in a long strip shape and are arranged horizontally in a scattered manner; the front end of the air injection box is a front cover plate that can be separated from the hot air duct of the oven; there are pulleys on both sides of the air injection box. The scattered horizontal arrangement of the air injection nozzles means that there are two groups of horizontal air injection nozzle arrays between the horizontal air dispersion ducts. On both vertical sides of the air dispersion ducts, there is one group of horizontal air injection nozzle arrays each. For two vertically adjacent groups of air injection nozzle arrays, their air injection nozzles are staggered horizontally. In this arrangement, there are two rows of air injection nozzle arrays between the air dispersion ducts in the same horizontal direction, and there are also two rows of air injection nozzle arrays between the air dispersion ducts in different horizontal directions. The arrangement of the air injection nozzles and the air dispersion ducts tends to be average in each area. The high-pressure area B formed by the airflow ejected from the air injection nozzles and the low-pressure area A formed by the air dispersion ducts intersect with each other. There is a horizontal air baffle in the middle of the ventilation duct, and there is a gap between the rear of the air baffle and the rear cover plate. There are firmly connected slide rails inside the oven, located below the pulleys on both sides of the air injection box; the air injection box can move backward along the slide rails. At this time, the front cover plate of the air injection box is separated from the hot air duct, and there is a high-temperature resistant elastic damping gasket at the joint between the front cover plate and the hot air duct of the oven.

2. The split flexible air blowing box device according to claim 1, characterized in that: The air dispersion duct is a large round hole structure with a diameter of 8 - 12 cm.

3. The split-type flexible air blowing box device according to claim 1, wherein: The spacing of the horizontal array of air dispersion ducts is 8 - 12 cm in diameter; The horizontal spacing of the air dispersion ducts in the same horizontal array is 30 - 40 cm.

4. The split flexible air blowing box device according to claim 1, characterized in that: The size of the air injection nozzle is 3 - 4 cm in length, 0.4 - 0.6 mm in width, and the short side has a rounded corner.

5. The split flexible air blowing box device according to claim 1, characterized in that: The rear cover plate can be disassembled.

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