Dehumidifying and air supplementing structure for non-woven fabric drying oven

Abstract

The utility model provides a moisture removal and air supplement structure for a non-woven fabric drying oven, a plurality of drying mechanisms are arranged on the non-woven fabric drying oven side by side in the first direction, each drying mechanism comprises a drying part, an upper ventilation part, a lower ventilation part, a heating part and an air draft part, the heating part is used for heating to generate hot air, and the air draft part is used for sucking the hot air; hot air enters the drying part through the upper ventilation part and the lower ventilation part, and the air draft part is arranged at the first end, in the second direction, of the drying part; the moisture removal and air supplement structure for the non-woven fabric drying oven comprises a moisture removal assembly, an air supplement assembly and a plurality of negative pressure cavities, the multiple negative pressure cavities communicate in the first direction, the negative pressure cavities are formed between a drying part and an air draft part in the second direction, and the air draft part works to form a negative pressure environment in the negative pressure cavities so that moisture can enter the negative pressure cavities; the moisture removal assembly and the air supplement assembly are both connected with the multiple negative pressure cavities, the moisture removal assembly is used for extracting moisture in the negative pressure cavities, and the air supplement assembly is used for blowing air into the negative pressure cavities, so that moisture removal and air supplement of the negative pressure cavities are uniform, and the situation that the non-woven fabric is locally too wet or too hot is avoided.

Description

Technical Field

[0001] This utility model relates to the field of textile technology, and in particular to a dehumidification and air replenishment structure for a nonwoven fabric drying oven. Background Technology

[0002] In the production of nonwoven fabrics, the drying oven is a crucial piece of equipment. It is used to dry the nonwoven fabrics to ensure product quality and performance. During the drying process, a large amount of moisture evaporates from the surface of the nonwoven fabric, increasing the humidity inside the oven, affecting drying efficiency, and even causing quality problems such as deformation and shrinkage. Therefore, to improve the drying effect, dehumidification and air replenishment are usually required inside the oven to maintain air balance and meet temperature and humidity requirements.

[0003] In the prior art, nonwoven fabric drying ovens generally include several drying sections. The dehumidification and air replenishment of the drying oven are generally achieved by using a fan for forced dehumidification, while fresh air is supplied to the drying oven through an air replenishment device to maintain the air balance inside the drying oven. However, the dehumidification and air replenishment systems inside the drying oven are not effectively matched, and it is impossible to achieve uniform dehumidification and air replenishment in each drying section, resulting in high humidity in some areas, which affects the uniform drying of nonwoven fabrics. Utility Model Content

[0004] The purpose of this application is to provide a dehumidification and air replenishment structure for a non-woven fabric drying oven to solve the problem of uneven dehumidification and air replenishment in the drying oven.

[0005] To achieve this objective, the following technical solution is adopted in this application:

[0006] This application provides a dehumidification and air replenishment structure for a non-woven fabric drying oven. The non-woven fabric drying oven has several drying mechanisms arranged in parallel along a first direction. Each drying mechanism includes a drying section, an upper ventilation section, a lower ventilation section, a heating section, and an exhaust section. The drying section is configured to dry the fabric. The upper ventilation section connects the heating section and the drying section. The lower ventilation section also connects the heating section and the drying section. The heating section is configured to heat to generate hot air. The hot air enters the drying section through the upper and lower ventilation sections. The exhaust section is located at the first end of the drying section along a second direction perpendicular to the first direction and is connected to the upper and lower ventilation sections. The exhaust section is configured to extract the moisture generated by the drying section.

[0007] The dehumidification and air replenishment structure for non-woven fabric drying oven includes a dehumidification component, an air replenishment component, and several negative pressure chambers. The several negative pressure chambers are connected along a first direction. A single negative pressure chamber is located between the drying section and the exhaust section along a second direction. The exhaust section works to create a negative pressure environment in the negative pressure chamber so that the moisture in the drying section can be transferred to the negative pressure chamber.

[0008] Both the dehumidification component and the air supply component are connected to several negative pressure chambers. The dehumidification component is configured to extract moisture from the negative pressure chambers, and the air supply component is configured to blow air into the negative pressure chambers so that the negative pressure chambers can be dehumidified and supplied with air evenly.

[0009] Optionally, the dehumidification assembly includes an exhaust fan, a dehumidification duct, several dehumidification outlets, and several first air collection boxes, wherein:

[0010] Each negative pressure chamber has a first air collection box at its top. The first air collection box has a dehumidification port. One end of the dehumidification pipe is connected to several first air collection boxes. The first air collection box is configured to connect the negative pressure chamber and the dehumidification pipe. The exhaust component is connected to the dehumidification pipe and is configured to extract air from the dehumidification pipe to extract moisture from the negative pressure chamber through the dehumidification port on the first air collection box and transport the moisture to the next process.

[0011] Optionally, the make-up air assembly includes a heat exchanger, make-up air ducts, several make-up air inlets, and several second air collection boxes, wherein:

[0012] The other end of the exhaust pipe is connected to the first inlet of the heat exchanger. A second air collection box is set at the bottom of each negative pressure chamber. An air supply port is opened on the second air collection box. The second air collection box is configured to connect one end of the negative pressure chamber and the air supply pipe. The other end of the air supply pipe is connected to the outlet of the heat exchanger. The hot air discharged from the heat exchanger enters the second air collection box through the air supply pipe and then enters the negative pressure chamber through the air supply port.

[0013] Optionally, the first air collection box is connected along the first direction, and one end of the dehumidification pipe is connected to the first air collection box at the outermost end along the first direction inside the non-woven fabric drying oven.

[0014] The second air collection box is connected along the first direction, and one end of the air supply pipe is connected to the second air collection box at the outermost end of the non-woven fabric drying oven along the first direction.

[0015] Optionally, the negative pressure chamber is provided with several sets of fixing components. The fixing components are configured to fix the first air collection box or the second air collection box. The fixing components include a first connector, a second connector, a threaded rod, and several nuts, wherein:

[0016] The first end of the first connector is fixedly installed on the first or second air collecting box. The first connector has a first waist-shaped hole that extends along the second direction. The second connector is fixedly installed on the inner wall of the negative pressure chamber. The second connector has a second waist-shaped hole that extends along the first direction.

[0017] Both ends of the threaded rod are provided with threaded sections. One end of the threaded rod passes through the first waist-shaped hole and the second waist-shaped hole in a vertical direction. At least two nuts are fitted onto the threaded rod. One nut is fitted onto the threaded rod and abuts against the upper end of the first connecting piece. The other nut is fitted onto the threaded rod and abuts against the lower end of the second connecting piece.

[0018] Optionally, both the exhaust duct and the make-up air duct include straight pipes and serpentine pipes, with the straight pipes connected to the serpentine pipes.

[0019] Optionally, the make-up air assembly also includes a connecting pipe. One end of the connecting pipe is connected to the second inlet of the heat exchanger. An opening is provided on the upper ventilation section. The other end of the connecting pipe is connected to the opening. Some of the moisture in the negative pressure chamber enters the exhaust section and then enters the upper ventilation section, and enters the heat exchanger through the connecting pipe connected to the upper ventilation section.

[0020] Compared with the prior art, the dehumidification and air supply structure for a nonwoven fabric drying oven proposed in this application has the following advantages:

[0021] 1) By setting a negative pressure chamber that communicates along the first direction between the drying section and the exhaust section and cooperating with the dehumidification component and the air replenishment component, uniform dehumidification and air replenishment effects can be achieved in the drying oven, improving drying efficiency and avoiding excessive moisture or heat in the nonwoven fabric section.

[0022] 2) By connecting the air collection boxes in series along the first direction and making the pipes connect only to the first and last air collection boxes, the number of pipes is reduced and the cost is lowered while ensuring that the airflow pressure in each area is balanced.

[0023] 3) By setting up connecting pipes, some of the recovered moisture can be redirected to the heat exchanger for heat recovery through the upper ventilation section, further improving energy utilization. At the same time, maintaining closed-loop control of the air circulation path inside the oven is beneficial for system energy saving and environmental protection. Attached Figure Description

[0024] To more clearly illustrate and understand the technical solutions in the embodiments of this application, the accompanying drawings used in the background technology and embodiment descriptions of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0025] Figure 1 This is a first-view perspective three-dimensional structural schematic diagram of the dehumidification and air replenishment structure for a non-woven fabric drying oven provided in the embodiments of this application;

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3This is a second-view perspective three-dimensional structural schematic diagram of the dehumidification and air replenishment structure for a non-woven fabric drying oven provided in the embodiments of this application;

[0028] Figure 4 This is a three-dimensional disassembled structural diagram of the drying mechanism of the nonwoven fabric drying oven provided in the embodiments of this application. Detailed Implementation

[0029] To facilitate understanding of this application, a more complete description of the application will be provided below with reference to the accompanying drawings. Preferred embodiments of the application are shown in the drawings. However, the application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figures 1 to 4 As shown in the embodiment of this application, a dehumidification and air replenishment structure for a non-woven fabric drying oven is provided. The non-woven fabric drying oven is located along a first direction ( Figure 1 Several drying mechanisms 10 are arranged side by side in the direction of X. Each drying mechanism 10 includes a drying section 11, an upper ventilation section 12, a lower ventilation section 13, a heating section 14, and an exhaust section 15. The drying section 11 is configured to dry the fabric. The upper ventilation section 12 connects the heating section 14 and the drying section 11. The lower ventilation section 13 connects the heating section 14 and the drying section 11. The heating section 14 is configured to heat to generate hot air. The hot air enters the drying section 11 through the upper ventilation section 12 and the lower ventilation section 13. The exhaust section 15 is arranged in the drying section 11 along the second direction (X direction). Figure 1The first end of the exhaust unit 15 (in the Y direction) is connected to the upper ventilation unit 12 and the lower ventilation unit 13. The exhaust unit 15 is configured to extract the moisture generated by the drying unit 11. The dehumidification and air replenishment structure for the non-woven fabric drying oven includes a dehumidification component 20, an air replenishment component 30 and several negative pressure chambers 40. The several negative pressure chambers 40 are connected along the first direction. A single negative pressure chamber 40 is disposed between the drying unit 11 and the exhaust unit 15 along the second direction. The operation of the exhaust unit 15 creates a negative pressure environment in the negative pressure chamber 40 so that the moisture from the drying unit 11 is transferred to the negative pressure chamber 40. The dehumidification component 20 and the air replenishment component 30 are both connected to the several negative pressure chambers 40. The dehumidification component 20 is configured to extract the moisture in the negative pressure chamber 40, and the air replenishment component 30 is configured to blow air into the negative pressure chamber 40 so that the negative pressure chamber 40 is uniformly dehumidified and replenished.

[0031] Specifically, the exhaust section 15, the drying section 11, and the negative pressure chamber 40 are connected along the second direction.

[0032] Specifically, the exhaust unit 15 includes a direct-connected circulating fan 150, which not only has excellent energy-saving effect but also saves installation space.

[0033] Specifically, the first direction is perpendicular to the second direction.

[0034] By providing a negative pressure chamber 40 that communicates in the first direction between the drying section 11 and the exhaust section 15 and cooperating with the dehumidification component 20 and the air replenishment component 30, uniform dehumidification and air replenishment effects can be achieved in the drying oven, improving drying efficiency and preventing the nonwoven fabric section from becoming too wet or too hot.

[0035] In one embodiment, the dehumidification assembly 20 includes an exhaust fan (not shown in the figure), a dehumidification pipe 21, a plurality of dehumidification ports 22, and a plurality of first air collection boxes 23, wherein: a first air collection box 23 is provided at the top of each negative pressure chamber 40, and a dehumidification port 22 is provided on the first air collection box 23; one end of the dehumidification pipe 21 is connected to a plurality of first air collection boxes 23; the first air collection boxes 23 are configured to connect the negative pressure chamber 40 and the dehumidification pipe 21; the exhaust fan is connected to the dehumidification pipe 21; the exhaust fan is configured to extract air from the dehumidification pipe 21 to extract moisture from the negative pressure chamber 40 through the dehumidification ports 22 on the first air collection boxes 23 and transport the moisture to the subsequent process.

[0036] By setting a first air collection box 23 at the top of each negative pressure chamber 40 and connecting it to the air extraction component and dehumidification pipe 21, the moisture can be collected and discharged in a concentrated manner, thereby improving the dehumidification efficiency and ensuring the stability and controllability of the dehumidification path.

[0037] In one embodiment, the air supply assembly 30 includes a heat exchanger 31, an air supply duct 32, a plurality of air supply ports 33, and a plurality of second air collection boxes 34, wherein: the other end of the exhaust duct 21 is connected to the first inlet of the heat exchanger 31, and a second air collection box 34 is provided at the bottom of each negative pressure chamber 40. An air supply port 33 is provided on the second air collection box 34. The second air collection box 34 is configured to connect the negative pressure chamber 40 with one end of the air supply duct 32. The other end of the air supply duct 32 is connected to the outlet of the heat exchanger 31. The hot air discharged from the heat exchanger 31 enters the second air collection box 34 through the air supply duct 32 and then enters the negative pressure chamber 40 through the air supply port 33.

[0038] The heat exchanger 31 converts the discharged hot and humid air into hot and dry air, which is then sent into the negative pressure chamber 40 through the second air collection box 34 after passing through the air supply pipe 32. This achieves the recovery and utilization of heat energy, improves energy efficiency, saves energy, and also achieves stable and balanced air supply, which is beneficial to the thermal stability of the entire oven.

[0039] In one embodiment, the first air collection box 23 is connected along the first direction, and one end of the dehumidification pipe 21 is connected to the first air collection box 23, which is the outermost part of the first end of the non-woven fabric drying oven along the first direction; the second air collection box 34 is connected along the first direction, and one end of the air supply pipe 32 is connected to the second air collection box 34, which is the outermost part of the second end of the non-woven fabric drying oven along the first direction.

[0040] By connecting the air collection boxes in series along the first direction and ensuring that the pipes only connect the first and last air collection boxes, the number of pipes is reduced and the cost is lowered while ensuring that the airflow pressure in each area is balanced.

[0041] In one embodiment, a plurality of fixing components 41 are provided inside the negative pressure chamber 40. The fixing components 41 are configured to fix the first air collecting box 23 or the second air collecting box 34. The fixing components 41 include a first connector 410, a second connector 420, a threaded rod 430, and a plurality of nuts 440. The first end of the first connector 410 is fixedly installed on the first air collecting box 23 or the second air collecting box 34. The first connector 410 has a first oblong hole 4100 extending along a second direction. The second connector 420 is fixedly installed... On the inner wall of the negative pressure chamber 40, the second connector 420 is provided with a second oblong hole 4200, which extends along the first direction; both ends of the threaded rod 430 are provided with threaded sections, and one end of the threaded rod 430 passes through the first oblong hole 4100 and the second oblong hole 4200 in a vertical direction. At least two nuts 440 are fitted onto the threaded rod 430. One nut 440 is fitted onto the threaded rod 430 and abuts against the upper end of the first connector 410, and the other nut 440 is fitted onto the threaded rod 430 and abuts against the lower end of the second connector 420.

[0042] Preferably, four nuts 440 are fitted onto the threaded rod 430, and the four nuts 440 respectively abut against the upper and lower surfaces of the first connector 410 and the upper and lower surfaces of the second connector 420.

[0043] The cooperation of the first connector 410, the second connector 420, the threaded rod 430 and the nut 440 enables the stable installation and adjustable connection of the air collection box in the negative pressure chamber 40, which facilitates the positioning and maintenance of the air collection box, and improves the reliability and installation efficiency of the system. The waist-shaped hole set along the vertical direction enhances the stability of the threaded rod 430 and prevents the air collection box from shifting in the horizontal direction.

[0044] In one embodiment, both the exhaust duct 21 and the air supply duct 32 include a straight pipe 210 and a serpentine pipe 211, with the straight pipe and the serpentine pipe connected to each other.

[0045] By incorporating a combination of serpentine and straight pipes in the exhaust duct 21 and the air supply duct 32, adjustments can be made according to different installation environments, improving space utilization while enhancing the system's heat exchange capacity and flow rate regulation function.

[0046] In one embodiment, the air supply assembly 30 further includes a connecting pipe 35. One end of the connecting pipe 35 is connected to the second inlet of the heat exchanger 31. An opening is provided on the upper ventilation section 12. The other end of the connecting pipe 35 is connected to the opening. Some of the moisture in the negative pressure chamber 40 enters the exhaust section 15 and then enters the upper ventilation section 12. It then enters the heat exchanger 31 through the connecting pipe 35 connected to the upper ventilation section 12.

[0047] By setting up the connecting pipe 35, some of the recovered moisture can be redirected to the heat exchanger 31 through the upper ventilation section 12 for heat recovery treatment, further improving energy utilization efficiency. At the same time, it maintains closed-loop control of the air circulation path in the oven, which is beneficial to system energy saving and environmental protection.

[0048] The above embodiments merely illustrate the basic principles and characteristics of this application. This application is not limited to the above examples. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A dehumidification and air supply structure for a non-woven fabric drying oven, characterized in that, The nonwoven fabric drying oven has several drying mechanisms arranged side by side along a first direction. Each drying mechanism includes a drying section, an upper ventilation section, a lower ventilation section, a heating section, and an exhaust section. The drying section is configured to dry the fabric. The upper ventilation section connects the heating section and the drying section. The lower ventilation section connects the heating section and the drying section. The heating section is configured to heat to generate hot air. The hot air enters the drying section through the upper ventilation section and the lower ventilation section. The exhaust section is located at a first end of the drying section along a second direction perpendicular to the first direction and is connected to the upper ventilation section and the lower ventilation section. The exhaust section is configured to extract the moisture generated by the drying section. The dehumidification and air replenishment structure for the nonwoven fabric drying oven includes a dehumidification component, an air replenishment component, and several negative pressure chambers. The several negative pressure chambers are connected along the first direction, and a single negative pressure chamber is disposed between the drying section and the exhaust section along the second direction. The exhaust section works to create a negative pressure environment in the negative pressure chamber so that the moisture from the drying section is transferred to the negative pressure chamber. Both the dehumidification component and the air supply component are connected to a plurality of negative pressure chambers. The dehumidification component is configured to extract moisture from the negative pressure chambers, and the air supply component is configured to blow air into the negative pressure chambers so that the negative pressure chambers can be uniformly dehumidified and supplied with air.

2. The dehumidification and air supply structure for a nonwoven fabric drying oven according to claim 1, characterized in that, The dehumidification assembly includes an exhaust fan, a dehumidification duct, several dehumidification outlets, and several first air collection boxes, wherein: Each negative pressure chamber has a first air collecting box at its top, and the first air collecting box has a dehumidification port. One end of the dehumidification pipe is connected to several first air collecting boxes. The first air collecting box is configured to connect the negative pressure chamber and the dehumidification pipe. The exhaust fan is connected to the dehumidification pipe and is configured to draw air from the dehumidification pipe to draw moisture from the negative pressure chamber through the dehumidification port on the first air collecting box and transport the moisture to the next process.

3. The dehumidification and air supply structure for a nonwoven fabric drying oven according to claim 2, characterized in that, The makeup air assembly includes a heat exchanger, makeup air ducts, several makeup air inlets, and several second air collection boxes, wherein: The other end of the exhaust pipe is connected to the first inlet of the heat exchanger. A second air collection box is provided at the bottom of each negative pressure chamber. The second air collection box is provided with a makeup air port. The second air collection box is configured to connect the negative pressure chamber and one end of the makeup air pipe. The other end of the makeup air pipe is connected to the outlet of the heat exchanger. The hot air discharged from the heat exchanger enters the second air collection box through the makeup air pipe and then enters the negative pressure chamber through the makeup air port.

4. The dehumidification and air supply structure for a nonwoven fabric drying oven according to claim 3, characterized in that, The first air collecting box is connected along the first direction, and one end of the dehumidification pipe is connected to the first air collecting box at the outermost end of the first end along the first direction inside the non-woven fabric drying oven. The second air collection box is connected along the first direction, and one end of the air supply pipe is connected to the second air collection box at the outermost end of the non-woven fabric drying oven along the first direction.

5. The dehumidification and air supply structure for a nonwoven fabric drying oven according to claim 3, characterized in that, The negative pressure chamber is provided with several sets of fixing components, which are configured to fix the first air collecting box or the second air collecting box. Each fixing component includes a first connector, a second connector, a threaded rod, and several nuts, wherein: The first end of the first connector is fixedly installed on the first air collecting box or the second air collecting box. The first connector has a first waist-shaped hole that extends along the second direction. The second connector is fixedly installed on the inner wall of the negative pressure chamber. The second connector has a second waist-shaped hole that extends along the first direction. Both ends of the threaded rod are provided with threaded sections. One end of the threaded rod passes through the first waist-shaped hole and the second waist-shaped hole in a vertical direction. At least two nuts are sleeved on the threaded rod. One nut is sleeved on the threaded rod and abuts against the upper end of the first connecting member, and the other nut is sleeved on the threaded rod and abuts against the lower end of the second connecting member.

6. The dehumidification and air supply structure for a nonwoven fabric drying oven according to claim 3, characterized in that, Both the exhaust pipe and the air supply pipe include a straight pipe and a serpentine pipe, and the straight pipe is connected to the serpentine pipe.

7. The dehumidification and air supply structure for a nonwoven fabric drying oven according to claim 3, characterized in that, The make-up air assembly also includes a connecting pipe, one end of which is connected to the second inlet of the heat exchanger. An opening is provided on the upper ventilation section, and the other end of the connecting pipe is connected to the opening. After some of the moisture in the negative pressure chamber enters the exhaust section, it enters the upper ventilation section and then enters the heat exchanger through the connecting pipe that communicates with the upper ventilation section.

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