A kind of adjustable drying oven for non-woven fabric processing

Abstract

The present invention discloses an adjustable drying box for non-woven fabric processing, which belongs to the technical field of non-woven fabric processing, and comprises a box body, a first feed inlet located at the front end of the box body, and a discharge outlet located at the rear end of the box body and at the same level as the first feed inlet. The present invention installs a high-pressure fan at the bottom of the box body, and provides strip nozzles that are connected to the output end of the high-pressure fan on the upper and lower sides of the first feed inlet. In the process of conveying and drying the fabric, the gas discharged from the strip nozzle can be respectively adhered to the upper and lower surfaces of the fabric and discharged in the conveying direction of the fabric, and the fabric is in a loose state inside the box body, so that the fabric can be controlled to shake in a corrugated shape inside the box body, which not only improves the drying rate, but also prevents the fabric from being affected by the tension during conveying, thereby ensuring the quality of the fabric after drying.

Description

Technical Field

[0001] The invention relates to a drying box, in particular to an adjustable drying box used for processing non-woven fabrics, and belongs to the technical field of non-woven fabric processing. Background Art

[0002] Non-woven fabric, also known as non-woven fabric, is a fabric that does not require spinning and weaving. It is made by directly using polymer chips, short fibers or filaments to form a net through air flow or machinery, and then reinforced by processes such as water spunlace, needle punching, and hot rolling. During the processing, non-woven fabrics need to enter a drying oven for drying.

[0003] In the prior art, for example, the utility model with application number 202322155366.3 discloses a drying box for non-woven fabric processing. In order to solve the problem that it is difficult to adjust the drying time according to the thickness of the fabric, which causes some fabrics to be heated for too long and become denatured, the motor is started by the control console to control the screw sleeve and the cloth guide frame to slide left and right synchronously, thereby controlling the size of the cloth area close to the hot air generator. Through the above design, the heating time of the cloth can be adjusted, and it is avoided that some devices are difficult to adjust the drying time according to the thickness of the fabric, thereby avoiding some fabrics from being heated for too long and becoming denatured, thereby improving work efficiency and improving the adjustability and practicality of the device.

[0004] In the prior art, for example, the utility model with application number 202122983928.4 discloses a drying device for the production of multi-layer meltblown non-woven fabrics. In order to solve the problem that the waste heat of the drying hot air cannot be reasonably utilized, and the non-woven fabric is not preheated before this operation, so that the non-woven fabric needs to be heated up for a long time at the beginning of drying, which prolongs the drying time of the non-woven fabric and has low drying efficiency, a preheating box is arranged at the left end of the drying box. The feed guide roller and the discharge guide roller arranged in the preheating box can realize the feeding and discharging of the non-woven fabric, and the feeding and discharging guide rollers are arranged at the feeding and discharging guide rollers. The lower electric heating roller and the upper electric heating roller between the material guide roller and the discharging guide roller can realize preheating treatment of the non-woven fabric after being energized. When the preheated non-woven fabric passes through the drying box, it is dried by the hot air introduced by the circulation pump. The air carrying moisture and residual temperature flows into the duct dehumidifier through the return air hood and is then re-introduced into the heating box for secondary heating. Finally, it is re-introduced into the outlet air hood to dry the non-woven fabric, thereby realizing the recycling of hot air and achieving a good drying effect. The device shortens the drying time of the non-woven fabric by setting a preheating box, has high drying efficiency, and is suitable for popularization and use.

[0005] Similar to the above application, there are still some shortcomings:

[0006] During the drying process of the non-woven fabric, the fabric is always in a taut state, which will cause deformation of the fabric. Moreover, the fabric cannot move and can only operate along a fixed trajectory, affecting the heating effect. In addition, only by the method of squeezing out water, the rate of water removal is low, and at the same time, the squeezing force during water removal cannot be flexibly adjusted according to the different thicknesses of the fabric, resulting in low practicability.

[0007] Therefore, an adjustable drying box for non-woven fabric processing is designed to optimize the above problems. Summary of the Invention

[0008] The main purpose of the present invention is to provide an adjustable drying box for non-woven fabric processing. By providing conveying rollers at the first feeding port and the discharging port of the box body, and the rotating speeds of the conveying rollers are the same, it can ensure the constant-speed conveying of the fabric and at the same time ensure the length of the fabric inside the box body. In addition, by installing a high-pressure blower at the bottom inside the box body and providing strip-shaped nozzles communicated with the output end of the high-pressure blower on the upper and lower sides of the first feeding port, during the process of fabric conveying and drying, the gas discharged from the strip-shaped nozzles can be respectively attached to the upper and lower surfaces of the fabric and discharged towards the conveying direction of the fabric, and the fabric is in a loose state inside the box body, so as to be able to control the fabric to shake in a wavy shape inside the box body, not only improving the drying rate, but also ensuring that the fabric is not affected by the pulling force during conveying, and ensuring the quality of the fabric after drying. By providing an air inlet pipe communicated with the negative pressure box at the bottom inside the water removal tank, and a water suction cover attached to the surface of the fabric at the top of the air inlet pipe, using the negative pressure generated by the high-pressure blower inside the negative pressure box, water can be sucked by the negative pressure, improving the water removal effect on the surface of the fabric. In addition, by using a water suction and discharge mechanism composed of a rubber conveyor belt, air holes, absorbent cotton, extrusion grooves, and extrusion rollers, the water sucked by the negative pressure can be squeezed out, ensuring the drying during gas circulation and higher practicability. By providing a pressure adjustment component composed of a U-shaped frame, a spring, a plug plate, a limiting rod, and a limiting block at the top of the movable pressing roller, the plug plate is attached to the bottom end of the circulating air pipe, and the power of the high-pressure blower can be controlled to control the gas circulation rate and the squeezing force on the movable pressing roller, improving the squeezing water removal effect.

[0009] The object of the present invention can be achieved by adopting the following technical solutions:

[0010] An adjustable drying box for processing non-woven fabrics, comprising a box body, a first feed inlet located at the front end of the box body, and a discharge outlet located at the rear end of the box body and at the same level as the first feed inlet, conveying rollers are symmetrically installed at the box body near the discharge outlet and at the outer end near the first feed inlet, a dewatering box is arranged at one end of the box body near the first feed inlet, and the conveying roller at the outer end of the box body is located inside the dewatering box, a second feed inlet located at the same level as the first feed inlet is opened at the end of the dewatering box, a squeezing dewatering mechanism is arranged inside the dewatering box, and the top of the dewatering box is aligned with the box body A circulating air pipe is provided between the inner top of the body, a steam removal mechanism is provided inside the circulating air pipe, a negative pressure box is installed at the bottom of the water removal box, an air inlet pipe connected to the inside of the negative pressure box is installed at the inner bottom of the water removal box, a water absorption hood is fixed on the top of the air inlet pipe, a water absorption and discharge mechanism is provided inside the negative pressure box, a high-pressure fan is installed at the inner bottom of the box, the input end of the high-pressure fan is connected to the inside of the negative pressure box, strip nozzles are symmetrically provided at one end of the box near the first feed port, the output end of the high-pressure fan is connected to the strip nozzle, and electric heating plates are provided on the top and bottom of the box.

[0011] Preferably, the top and the bottom of the box body at one end near the first feed inlet are both provided with inclined surfaces, and the two sets of inclined surfaces at the end of the box body are symmetrical to each other, and the electric heating plates are all fixed on the inclined surfaces.

[0012] Preferably, the inner top and the inner bottom of the box body are both provided with guide plates, and the two sets of guide plates are symmetrically arranged with the line connecting the first feed port and the discharge port as the axis.

[0013] Preferably, the strip nozzle is arranged parallel to the width direction of the box body, and the length of the strip nozzle is the same as the length of the first feed port, and the exhaust direction of the strip nozzle is parallel to the horizontal plane.

[0014] Preferably, the conveying rollers are all rubber rollers, and the outer sides of the conveying rollers are provided with frosted surfaces.

[0015] Preferably, the steam removal mechanism comprises a condenser and a guide groove, the condenser is installed inside the circulating air pipe, and the condenser is located above the box body, a guide groove is opened at the bottom of the condenser, and the bottom of the condenser is connected to the guide groove.

[0016] Preferably: the water absorption and discharge mechanism includes a rubber conveyor belt, air holes, absorbent cotton, an extrusion groove and an extrusion roller, the rubber conveyor belt is vertically arranged inside the negative pressure box, air holes are evenly opened on the rubber conveyor belt, absorbent cotton is evenly arranged on the outside of the rubber conveyor belt, an extrusion groove is opened at the bottom end of the rubber conveyor belt, an extrusion roller is rotatably installed between the two sides of the extrusion groove, and the side of the extrusion roller is in contact with the absorbent cotton.

[0017] Preferably: the extrusion dewatering mechanism includes a fixed pressure roller, a movable pressure roller and a pressure regulating assembly, the fixed pressure roller is rotatably installed between the two sides inside the dewatering box, and the fixed pressure roller is close to the second feed port, the movable pressure roller is rotatably installed on the top of the fixed pressure roller, and the pressure regulating assembly is arranged on the top of the movable pressure roller.

[0018] Preferably: the pressure regulating assembly includes a cam-shaped frame, a spring and a blocking plate, the cam-shaped frame is vertically slidably arranged between the two sides of the dewatering tank, the end of the movable pressure roller is rotatably connected to the end of the cam-shaped frame, the blocking plate is attached to the bottom end of the circulating air pipe, springs are evenly arranged between the blocking plate and the cam-shaped frame, and a limiting assembly is provided on the top of the cam-shaped frame.

[0019] Preferably: the limit assembly includes a limit rod and a limit block, the limit rod is evenly and vertically installed on the top of the cam frame, the limit rod passes through the inside of the spring and penetrates the blocking plate and the water removal tank, the limit rod extends to the top of the water removal tank, the limit rod is slidably connected to the water removal tank and the blocking plate, and the top of the limit rod is fixed with a limit block.

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides an adjustable drying box for non-woven fabric processing. By arranging conveying rollers at the first feed inlet and the discharge outlet of the box body, and the rotation speeds of the conveying rollers are the same, the constant speed conveying of the fabric can be ensured, and the length of the fabric inside the box body can be ensured at the same time. In addition, by installing a high-pressure fan at the bottom of the box body, and strip nozzles connected to the output end of the high-pressure fan are arranged on the upper and lower sides of the first feed inlet, the gas discharged from the strip nozzle can be respectively attached to the upper and lower surfaces of the fabric and discharged in the conveying direction of the fabric during the conveying and drying of the fabric, and the fabric is in a loose state inside the box body, so that the fabric can be controlled to shake in a corrugated shape inside the box body, which not only improves the drying rate, but also prevents the fabric from being affected by the tension during conveying, thereby ensuring the quality of the fabric after drying.

[0022] An air intake pipe communicating with the negative pressure box is provided at the inner bottom of the water removal box, and a water absorption cover in contact with the surface of the fabric is provided at the top of the air intake pipe. A high-pressure fan is used to generate negative pressure inside the negative pressure box, and water can be absorbed by the negative pressure, thereby improving the water removal effect on the surface of the fabric. In addition, a water absorption and discharge mechanism composed of a rubber conveyor belt, air holes, water-absorbing cotton, an extrusion groove, and an extrusion roller is used to squeeze out the water absorbed by the negative pressure, thereby ensuring dryness during gas circulation, and having higher practicality.

[0023] By arranging a pressure regulating assembly consisting of a cam frame, a spring, a blocking plate, a limit rod and a limit block on the top of the movable pressing roller, and the blocking plate is attached to the bottom end of the circulating air pipe, the circulation rate of the gas and the squeezing force on the movable pressing roller can be controlled by controlling the power of the high-pressure fan, thereby improving the extrusion and water removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front cross-sectional view of a preferred embodiment of an adjustable drying oven for non-woven fabric processing of the present invention;

[0025] Figure 2 This is a preferred embodiment of an adjustable drying oven for non-woven fabric processing of the present invention. Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 A diagram of a strip nozzle of a preferred embodiment of an adjustable drying oven for non-woven fabric processing according to the present invention;

[0027] Figure 4 This is a diagram showing the internal structure of a dewatering box in a preferred embodiment of an adjustable drying box for non-woven fabric processing of the present invention;

[0028] Figure 5 A diagram of a pressure regulating component in a preferred embodiment of a regulating drying oven for non-woven fabric processing according to the present invention;

[0029] Figure 6 This is a diagram showing the internal structure of a negative pressure box in a preferred embodiment of an adjustable drying box for non-woven fabric processing of the present invention;

[0030] Figure 7 This is a preferred embodiment of an adjustable drying oven for non-woven fabric processing of the present invention. Figure 1 Enlarged view of point B in the middle;

[0031] Figure 8 The present invention is a front view of a preferred embodiment of an adjustable drying oven for non-woven fabric processing.

[0032] In the figure: 1, box body; 101, first feed inlet; 102, discharge outlet;

[0033] 2. Dewatering tank; 201. Second feed inlet;

[0034] 3. Extrusion and water removal mechanism; 301. Fixed pressure roller; 302. Movable pressure roller; 303. Pressure adjustment assembly; 3031. Frame; 3032. Spring; 3033. Blocking plate; 3034. Limit rod; 3035. Limit block;

[0035] 4. Negative pressure box; 5. Air intake pipe; 6. Water absorption hood;

[0036] 7. water absorption and discharge mechanism; 701. rubber conveyor belt; 702. air hole; 703. water absorption cotton; 704. extrusion groove; 705. extrusion roller;

[0037] 8. High-pressure fan; 9. Conveying roller; 10. Strip nozzle; 11. Electric heating plate; 12. Circulating air pipe;

[0038] 13. Steam removal mechanism; 1301. Condenser; 1302. Guide groove;

[0039] 14. Drainage plate. DETAILED DESCRIPTION

[0040] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0041] like Figure 1-Figure 8 As shown, the present embodiment provides an adjustable drying box for processing non-woven fabrics, comprising a box body 1, a first feed port 101 located at the front end of the box body 1, and a discharge port 102 located at the rear end of the box body 1 and at the same level as the first feed port 101, conveying rollers 9 are symmetrically installed at the inside of the box body 1 near the discharge port 102 and at the outer end near the first feed port 101, a dewatering box 2 is provided at one end of the box body 1 near the first feed port 101, and the conveying roller 9 at the outer end of the box body 1 is located inside the dewatering box 2, a second feed port 201 located at the same level as the first feed port 101 is opened at the end of the dewatering box 2, and an extrusion dewatering mechanism 3 is provided inside the dewatering box 2. A circulating air pipe 12 is provided between the top of the water tank 2 and the inner top of the box body 1, and a steam removal mechanism 13 is provided inside the circulating air pipe 12. A negative pressure box 4 is installed at the bottom of the dewatering box 2, and an air intake pipe 5 connected to the inside of the negative pressure box 4 is installed at the inner bottom of the dewatering box 2. A water absorption hood 6 is fixed on the top of the air intake pipe 5, and a water absorption and discharge mechanism 7 is provided inside the negative pressure box 4. A high-pressure fan 8 is installed at the inner bottom of the box body 1, and the input end of the high-pressure fan 8 is connected to the inside of the negative pressure box 4. A strip nozzle 10 is symmetrically arranged at one end of the box body 1 near the first feed port 101, and the output end of the high-pressure fan 8 is connected to the strip nozzle 10. Electric heating plates 11 are provided on the top and bottom of the box body 1.

[0042] The general working principle is as follows: the dewatering tank 2 is connected to the interior of the box body 1 through the circulating air pipe 12, the dewatering tank 2 is connected to the negative pressure box 4, the input end of the high-pressure fan 8 is connected to the interior of the negative pressure box 4, and the output end of the high-pressure fan 8 is connected to the interior of the box body 1, so that the gas circulation can be realized. When drying, the electric heating plate 11 is energized, and the interior of the box body 1 is in a high temperature state. The fabric is horizontally inserted from the second feed port 201 on the dewatering tank 2, and after dehydration, it enters the interior of the box body 1 through the first feed port 101, and the conveying roller 9 at the first feed port 101 is used to press and convey the fabric to control the feeding rate. After the drying is completed, The fabric is then discharged from the discharge port 102, and when discharged, it is pressed and conveyed by two sets of conveying rollers 9 at the discharge port 102 to control the discharge rate. The rotation speeds of the conveying rollers 9 at the first feed port 101 and the discharge port 102 are the same, and the length of the fabric inside the box body 1 is greater than the straight length of the box body 1. After the fabric enters the dewatering box 2, it is first squeezed and dewatered by the squeezing and dewatering mechanism 3, and then the fabric moves in contact with the top of the water absorption hood 6, and the high-pressure fan 8 is started to generate air pressure inside the negative pressure box 4, and hot air is extracted from the inside of the box body 1. The hot air will cool down after passing through the steam removal mechanism 13, and the cooling The gas after entering the dehydration box 2 can preheat the fabric, and the hot air passes through the fabric. The moisture is affected by the suction force and moves downward with the gas into the interior of the negative pressure box 4, and then the water droplets are absorbed and discharged to the outside of the device through the water absorption and discharge mechanism 7, and then the clean gas is blown by the high-pressure fan 8 and sprayed out from the strip nozzle 10. After the negative pressure water absorption, the fabric enters at a uniform speed from the first feed port 101. Since the total length of the fabric inside the box 1 is greater than the horizontal length of the box 1, the fabric will droop downward, and the high-speed airflow sprayed by the upper and lower groups of strip nozzles 10 will exert impact force on the starting end of the fabric, and the upper and lower groups of strip nozzles 10 will The air flow rate sprayed by the group of strip nozzles 10 will vary depending on the distance from the high-pressure fan 8, and the impact force applied to the upper and lower surfaces of the fabric will also vary. Therefore, the fabric will not be in a horizontal state, and the impact force applied to the fabric will be transmitted along the fabric. Since the fabric itself has a certain elasticity and flexibility, when the impact force is transmitted to the other end, it is easy to cause vibration and shaking, especially when the fabric is relatively thin, this situation is more obvious, so the fabric will appear to swing in a corrugated shape, which not only increases the gas flow rate inside the box 1, but also allows the fabric to be more fully in contact with the hot air, thereby accelerating the drying rate of the fabric.

[0043] In this embodiment, the top and bottom of the box body 1 near the first feed port 101 are both provided with inclined surfaces, and the two sets of inclined surfaces at the end of the box body 1 are symmetrical to each other, and the electric heating plates 11 are all fixed on the inclined surfaces.

[0044] Partial working principle: The setting of the inclined surface can effectively reduce the internal space of the box 1, avoid heating dead corners, and facilitate the circulation of hot air.

[0045] In this embodiment, the inner top and the inner bottom of the box body 1 are both provided with guide plates 14 , and two sets of guide plates 14 are symmetrically arranged with the line connecting the first feed port 101 and the discharge port 102 as the axis.

[0046] Partial working principle: The hot air rotates around the guide plate 14 during the circulation process, the gas on the top of the fabric flows clockwise, and the air flow on the bottom of the fabric flows counterclockwise.

[0047] In this embodiment, the strip nozzle 10 is arranged parallel to the width direction of the box body 1, and the length of the strip nozzle 10 is the same as the length of the first feed port 101, and the exhaust direction of the strip nozzle 10 is parallel to the horizontal plane.

[0048] Partial working principle: The gas discharged from the strip nozzle 10 can be sprayed evenly on the surface of the fabric, and the fabric can shake regularly.

[0049] In this embodiment, the conveying rollers 9 are all rubber rollers, and the outer sides of the conveying rollers 9 are provided with frosted surfaces.

[0050] Partial working principle: The frosted surface of the conveying roller 9 can increase the friction between the conveying roller and the fabric, ensuring the uniform speed conveying of the fabric.

[0051] In this embodiment, the steam removal mechanism 13 includes a condenser 1301 and a guide groove 1302. The condenser 1301 is installed inside the circulating air pipe 12, and the condenser 1301 is located above the box 1. The guide groove 1302 is opened at the bottom of the condenser 1301, and the bottom of the condenser 1301 is connected to the guide groove 1302.

[0052] Local working principle: the water vapor generated by drying will enter the interior of the circulating air pipe 12. The use of the condenser 1301 can condense the water vapor into droplets to dry the circulating airflow, and the condenser 1301 will also cool the water vapor. After entering the interior of the dewatering tank 2, it only plays a preheating role without generating water vapor.

[0053] In this embodiment, the water absorption and discharge mechanism 7 includes a rubber conveyor belt 701, air holes 702, absorbent cotton 703, an extrusion groove 704 and an extrusion roller 705. The rubber conveyor belt 701 is vertically arranged inside the negative pressure box 4. The air holes 702 are evenly arranged on the rubber conveyor belt 701. The absorbent cotton 703 is evenly arranged on the outside of the rubber conveyor belt 701. The bottom end of the rubber conveyor belt 701 is provided with an extrusion groove 704. An extrusion roller 705 is rotatably installed between the two sides of the extrusion groove 704. The side of the extrusion roller 705 is in contact with the absorbent cotton 703.

[0054] Local working principle: the liquid droplets sucked from the fabric by the high-pressure fan 8 enter the absorbent cotton 703. After being absorbed by the absorbent cotton 703, the gas is recirculated to the inside of the box 1, and the rubber conveyor belt 701 is always in a rotating state. The rubber conveyor belt 701 rotates clockwise, and during the rotation, the extrusion roller 705 squeezes the absorbent cotton 703, squeezes the water and drips it into the inside of the extrusion groove 704, and then discharges it to the outside.

[0055] In this embodiment, the extrusion dewatering mechanism 3 includes a fixed pressure roller 301, a movable pressure roller 302 and a pressure regulating assembly 303. The fixed pressure roller 301 is rotatably installed between the two sides inside the dewatering box 2, and the fixed pressure roller 301 is close to the second feed port 201. The movable pressure roller 302 is rotatably installed on the top of the fixed pressure roller 301, and the pressure regulating assembly 303 is arranged on the top of the movable pressure roller 302.

[0056] Local working principle: After the fabric enters the dewatering tank 2 from the second feed port 201, it passes between the fixed pressure roller 301 and the movable pressure roller 302. The pressure regulating component 303 applies downward pressure to the movable pressure roller 302, and the squeezing force on the fabric can be controlled according to the moisture content of the fabric.

[0057] In this embodiment, the pressure regulating assembly 303 includes a cam-shaped frame 3031, a spring 3032 and a blocking plate 3033. The cam-shaped frame 3031 is vertically slidably arranged between the two sides of the dewatering tank 2. The end of the movable pressure roller 302 is rotatably connected to the end of the cam-shaped frame 3031. The blocking plate 3033 is attached to the bottom end of the circulating air pipe 12. The springs 3032 are evenly arranged between the blocking plate 3033 and the cam-shaped frame 3031. A limiting assembly is provided at the top of the cam-shaped frame 3031.

[0058] Local working principle: In the initial state, the blocking plate 3033 is attached to the bottom of the circulating air pipe 12 to block the circulating air pipe 12. During the circulation of the gas, when the gas enters the dewatering tank 2 from the circulating air pipe 12, downward pressure is applied to the blocking plate 3033. The pressure is transmitted downward and applied to the movable pressure roller 302. By controlling the output power of the high-pressure fan 8 and changing the circulation rate of the airflow, the pressure of the movable pressure roller 302 during squeezing and dewatering can be regulated at the same time.

[0059] In this embodiment, the limiting assembly includes a limiting rod 3034 and a limiting block 3035. The limiting rod 3034 is evenly and vertically installed on the top of the cam frame 3031. The limiting rod 3034 passes through the inside of the spring 3032 and penetrates the blocking plate 3033 and the dewatering box 2. The limiting rod 3034 extends to the top of the dewatering box 2. The limiting rod 3034 is slidably connected to the dewatering box 2 and the blocking plate 3033. The limiting block 3035 is fixed on the top of the limiting rod 3034.

[0060] Partial working principle: when controlling the movement of the movable pressing roller 302, due to the existence of the limiting rod 3034, it is possible to ensure that the movable pressing roller 302 moves vertically, thereby ensuring the squeezing effect on the fabric.

[0061] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. An adjustable drying oven for processing nonwoven fabrics, comprising a box body (1), a first feed inlet (101) located at the front end of the box body (1), and a discharge outlet (102) located at the rear end of the box body (1) and at the same level as the first feed inlet (101), characterized in that: Conveying rollers (9) are symmetrically installed at the inner part of the box body (1) near the discharge port (102) and the outer end part near the first feed port (101); a dewatering box (2) is arranged at one end of the box body (1) near the first feed port (101); the conveying rollers (9) at the outer end part of the box body (1) are located inside the dewatering box (2); a second feed port (201) located at the same level as the first feed port (101) is opened at the end part of the dewatering box (2); an extrusion dewatering mechanism (3) is arranged inside the dewatering box (2); a circulating air pipe (12) is arranged between the top of the dewatering box (2) and the inner top part of the box body (1); a steam removal mechanism (101) is arranged inside the circulating air pipe (12); 3), a negative pressure box (4) is installed at the bottom of the water removal box (2), an air intake pipe (5) connected to the inside of the negative pressure box (4) is installed at the inner bottom of the water removal box (2), a water absorption cover (6) is fixed on the top of the air intake pipe (5), a water absorption and discharge mechanism (7) is provided inside the negative pressure box (4), a high-pressure fan (8) is installed at the inner bottom of the box body (1), the input end of the high-pressure fan (8) is connected to the inside of the negative pressure box (4), a strip nozzle (10) is symmetrically arranged at one end of the box body (1) near the first feed port (101), the output end of the high-pressure fan (8) is connected to the strip nozzle (10), and electric heating plates (11) are provided at the top and bottom of the box body (1); The water absorption and discharge mechanism (7) comprises a rubber conveyor belt (701), air holes (702), water-absorbing cotton (703), an extrusion groove (704) and an extrusion roller (705). The rubber conveyor belt (701) is vertically arranged inside the negative pressure box (4). The air holes (702) are evenly arranged on the rubber conveyor belt (701). The outer side of the rubber conveyor belt (701) is evenly arranged with water-absorbing cotton (703). The bottom end of the rubber conveyor belt (701) is provided with an extrusion groove (704). An extrusion roller (705) is rotatably installed between two sides of the extrusion groove (704). The side of the extrusion roller (705) is in contact with the water-absorbing cotton (703).

2. The adjustable drying oven for nonwoven fabric processing according to claim 1, characterized in that: The top and bottom of the box body (1) at one end near the first feed port (101) are both provided with inclined surfaces, and the two sets of inclined surfaces at the end of the box body (1) are symmetrical to each other, and the electric heating plates (11) are all fixed on the inclined surfaces.

3. The adjustable drying oven for nonwoven fabric processing according to claim 2, characterized in that: The inner top and the inner bottom of the box body (1) are both provided with flow guide plates (14), and the two sets of flow guide plates (14) are symmetrically arranged with the line connecting the first feed port (101) and the discharge port (102) as the axis.

4. The adjustable drying oven for nonwoven fabric processing according to claim 1, characterized in that: The strip nozzle (10) is arranged parallel to the width direction of the box body (1), and the length of the strip nozzle (10) is the same as the length of the first feed port (101), and the exhaust direction of the strip nozzle (10) is parallel to the horizontal plane.

5. The adjustable drying oven for non-woven fabric processing according to claim 1, characterized in that: The conveying rollers (9) are all rubber rollers, and the outer sides of the conveying rollers (9) are provided with frosted surfaces.

6. The adjustable drying oven for nonwoven fabric processing according to claim 1, characterized in that: The steam removal mechanism (13) comprises a condenser (1301) and a guide groove (1302). The condenser (1301) is installed inside the circulating gas pipe (12), and the condenser (1301) is located above the box (1). The bottom of the condenser (1301) is provided with a guide groove (1302), and the bottom of the condenser (1301) is connected to the guide groove (1302).

7. The adjustable drying oven for nonwoven fabric processing according to claim 6, characterized in that: The squeezing dewatering mechanism (3) comprises a fixed pressing roller (301), a movable pressing roller (302) and a pressure regulating assembly (303); the fixed pressing roller (301) is rotatably mounted between two sides inside the dewatering box (2), and the fixed pressing roller (301) is close to the second feed inlet (201); the movable pressing roller (302) is rotatably mounted on the top of the fixed pressing roller (301), and the pressure regulating assembly (303) is arranged on the top of the movable pressing roller (302).

8. The adjustable drying oven for nonwoven fabric processing according to claim 7, characterized in that: The pressure regulating assembly (303) comprises a cam-shaped frame (3031), a spring (3032) and a blocking plate (3033); the cam-shaped frame (3031) is vertically slidably arranged between two sides of the dewatering tank (2); the end of the movable pressure roller (302) is rotatably connected to the end of the cam-shaped frame (3031); the blocking plate (3033) is attached to the bottom end of the circulating air pipe (12); the spring (3032) is evenly arranged between the blocking plate (3033) and the cam-shaped frame (3031); and a limiting assembly is arranged at the top of the cam-shaped frame (3031).

9. The adjustable drying oven for nonwoven fabric processing according to claim 8, characterized in that: The limiting assembly comprises a limiting rod (3034) and a limiting block (3035), wherein the limiting rod (3034) is evenly and vertically installed on the top of the cam frame (3031), the limiting rod (3034) passes through the inside of the spring (3032) and penetrates the blocking plate (3033) and the water removal box (2), the limiting rod (3034) extends to the top of the water removal box (2), the limiting rod (3034) is slidably connected to the water removal box (2) and the blocking plate (3033), and the limiting block (3035) is fixed on the top of the limiting rod (3034).

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