Liquid ammonia padding device for superfine fiber low-tension woven fabric
By introducing negative pressure and a detection mechanism into the liquid ammonia impregnation unit, the problem of ammonia leakage was solved, achieving safe production and efficient processing, and improving fabric performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-03-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing liquid ammonia impregnation unit suffers from serious ammonia leakage during production, which endangers the health of operators and the environment. Furthermore, the lack of effective leakage prevention measures leads to frequent accidents.
A liquid ammonia impregnation device for microfiber low-tension woven fabric was designed, equipped with a negative pressure mechanism and a detection mechanism. The negative pressure mechanism forms an internal negative pressure through a piston cylinder and a one-way valve to prevent ammonia leakage, and the detection mechanism detects leakage in a timely manner through an ammonia detection head and an alarm.
It effectively prevents ammonia leakage, ensures a safe working environment, reduces harm to operators and the environment, improves the treatment effect of liquid ammonia, and enhances production safety.
Smart Images
Figure CN121760149A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fabric processing, and more particularly to a liquid ammonia impregnation device for microfiber low-tension woven fabrics. Background Technology
[0002] In the production and processing of microfiber low-tension woven fabrics, liquid ammonia padding is a key process that can significantly improve the performance of the fabric, such as enhancing its strength, improving its dimensional stability, and giving it a unique soft feel, thereby greatly improving the quality of the fabric and meeting the diverse market demand for high-quality textiles. However, the liquid ammonia impregnation process faces a serious problem of ammonia leakage in practical applications. Ammonia has a strong, pungent odor and poses significant hazards to human health and the environment. Once a leak occurs, it not only severely threatens the lives of operators, causing respiratory illnesses, skin burns, and other health problems, but also pollutes the surrounding environment and disrupts the ecological balance. Most existing liquid ammonia impregnation units lack effective leak prevention measures. During normal production, ammonia can easily leak into the working environment due to poor equipment sealing or improper operation. While some units are equipped with simple protective measures, their effectiveness is limited and cannot fundamentally prevent ammonia leakage. Moreover, when ammonia leaks occur, they are often not detected in time, leading to further deterioration and increasing the probability and severity of accidents. Summary of the Invention
[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a liquid ammonia impregnation device for microfiber low-tension woven fabrics. This device is equipped with a negative pressure mechanism to generate internal negative pressure and prevent ammonia leakage. In addition, a detection mechanism is provided to detect ammonia leakage immediately if the negative pressure mechanism is damaged.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A liquid ammonia impregnation device for microfiber low-tension woven fabric includes a housing with a processing chamber inside, the bottom of which is filled with liquid ammonia, and strip-shaped openings on both side walls of the processing chamber; a negative pressure mechanism including a piston cylinder mounted on the rear side of the housing, a piston plate that can slide left and right inside the piston cylinder, the left side space of the piston cylinder communicating with the interior of the housing through a first one-way pipe, and a second one-way pipe communicating with the left side space of the piston cylinder, the first one-way pipe housing a first one-way valve, and the second one-way pipe housing a second one-way valve. The use of the negative pressure mechanism can generate negative pressure inside the housing to prevent ammonia leakage; a guiding mechanism for guiding the fabric; and a rolling mechanism for improving the liquid ammonia treatment effect.
[0005] Preferably, a first one-way valve is installed inside the first one-way pipe, and a second one-way valve is installed inside the second one-way pipe. The flow direction of the first one-way valve is one-way into the piston cylinder inside the processing chamber, and the flow direction of the second one-way valve is one-way outward discharge from the piston cylinder.
[0006] Preferably, the guiding mechanism includes three guide rollers disposed inside the processing chamber, and the three guide rollers are arranged in an L-shape.
[0007] Preferably, the rolling mechanism includes two rolling rolls rotatably connected between the front and rear inner walls of the processing chamber. The rear ends of the rotation shafts of the two rolling rolls extend to the outside and are fixedly connected to transmission gears. The two transmission gears mesh. A first mounting bracket is installed on the front side of the housing. A drive motor is installed on the first mounting bracket. The output shaft of the drive motor extends into the processing chamber and is fixedly connected to the front rotation shaft of one of the rolling rolls. The fabric body is commonly arranged on the three guide rollers.
[0008] Preferably, a second mounting bracket is installed on the rear side of the housing, and a gearbox is installed on the second mounting bracket. The input shaft of the gearbox is fixedly connected to the rear end of the rotating shaft of one of the rolling rolls. A drive disc is fixedly connected to the output end of the gearbox. A linkage rod is rotatably connected to the rear eccentric part of the drive disc. The other end of the linkage rod is rotatably connected to the right side of the piston plate.
[0009] Preferably, a second spiral frame is installed on the right side of the housing, and a first spiral frame is installed on the left side of the housing.
[0010] Preferably, the system further includes a detection mechanism, which comprises symmetrically arranged grooves at the top and bottom of the first circular frame. A reciprocating screw is rotatably connected between the inner walls of the left and right sides of each groove. Each reciprocating screw is provided with a matching slider. Each slider is slidably connected to the inner wall of the corresponding groove. An ammonia detection head is installed on the opposite side of each of the two sliders. A connecting frame is installed at the upper end of the housing, and an alarm is installed at the upper end of the connecting frame.
[0011] Preferably, the front end of the lower reciprocating lead screw extends to the outside, and a first synchronous pulley is installed on both the lower reciprocating lead screw and the output shaft of the drive motor. The two first synchronous pulleys are connected by a first synchronous belt. The rear ends of both reciprocating lead screws extend to the outside and are equipped with second synchronous pulleys. The two second synchronous pulleys are connected by a second synchronous belt.
[0012] Compared with the prior art, the beneficial effects of this invention are as follows: 1. The main body of the fabric enters the processing chamber through the first loop frame and moves along a specific path under the guidance of three L-shaped guide rollers to ensure uniform immersion in the bottom liquid ammonia. The drive motor drives the rolling rollers to rotate, and the fabric immersed in liquid ammonia is rolled between two rolling rollers, which effectively improves the liquid ammonia treatment effect, significantly enhances the fabric performance, and meets the production requirements of high-quality fabrics.
[0013] 2. The gearbox transmits power from the rolling rolls to the drive plate. The drive plate drives the piston plate to slide through the linkage rod, causing the air in the processing chamber to circulate through the one-way pipe, forming an internal negative pressure. This prevents ammonia from leaking from the first forming frame, ensuring a safe working environment and reducing harm to operators and the surrounding environment. The structure is reasonable and the operation is stable and reliable.
[0014] 3. The drive motor drives two reciprocating lead screws to rotate synchronously via a synchronous pulley and belt. The slider drives the ammonia detection head to move back and forth at the top and bottom of the first circular frame, achieving comprehensive detection. Once an ammonia leak is detected, the alarm will sound immediately, allowing staff to discover and handle the situation as soon as possible, nipping potential safety hazards in the bud and improving production safety. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the liquid ammonia impregnation device for a microfiber low-tension woven fabric proposed in this invention. Figure 2 for Figure 1 Rear view diagram; Figure 3 for Figure 1 A top-down view; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 1 A schematic diagram of the cross-sectional structure; Figure 6 for Figure 5 Enlarged view of point B.
[0016] In the diagram: 1. Housing, 2. First mounting bracket, 3. Drive motor, 4. First synchronous pulley, 5. First synchronous belt, 6. Connecting bracket, 7. Alarm, 8. First loop frame, 9. Second loop frame, 10. Fabric body, 11. Piston cylinder, 12. Piston plate, 13. Linkage rod, 14. Drive disc, 15. Transmission gear, 16. Gearbox, 17. Second synchronous pulley, 18. Second synchronous belt, 19. Second mounting bracket, 20. Rotary shaft, 21. Processing chamber, 22. Guide roller, 23. Rolling roller, 24. First one-way tube, 25. Second one-way tube, 26. First one-way valve, 27. Second one-way valve, 28. Slide groove, 29. Reciprocating screw, 30. Slider, 31. Ammonia detection head. Detailed Implementation
[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0019] Reference Figures 1-6 A liquid ammonia impregnation device for microfiber low-tension woven fabric includes a housing 1. A second loop frame 9 is installed on the right side of the housing 1. The second loop frame 9 is a docking frame that is sealed to the device in the subsequent processing process so that ammonia will not leak here. A first loop frame 8 is installed on the left side of the housing 1. A processing chamber 21 is provided inside the housing 1. The bottom of the processing chamber 21 is filled with liquid ammonia. Strip-shaped openings are provided on both sides of the processing chamber 21. The system also includes a negative pressure mechanism, which includes a piston cylinder 11 installed on the rear side of the housing 1. The piston cylinder 11 is equipped with a piston plate 12 that can slide left and right. The left side space of the piston cylinder 11 is connected to the inside of the housing 1 through a first one-way pipe 24. The left side space of the piston cylinder 11 is connected to a second one-way pipe 25. A first one-way valve 26 is installed inside the first one-way pipe 24, and a second one-way valve 27 is installed inside the second one-way pipe 25. The flow direction of the first one-way valve 26 is one-way into the piston cylinder 11 from the inside of the processing chamber 21, and the flow direction of the second one-way valve 27 is one-way outward discharge from the piston cylinder 11. The use of the negative pressure mechanism can generate negative pressure inside the housing 1 to prevent ammonia leakage. Furthermore, the other end of the second one-way pipe 25 is connected to an external ammonia recovery system to facilitate the recovery and treatment of ammonia.
[0020] It also includes a guiding mechanism, which is used to guide the fabric. The guiding mechanism includes three guide rollers 22 arranged in an L-shape inside the processing chamber 21. The fabric body 10 is provided on the three guide rollers 22. The system also includes a rolling mechanism to improve the liquid ammonia treatment effect. The rolling mechanism includes two rolling rollers 23 rotatably connected between the front and rear inner walls of the treatment chamber 21. The rear ends of the rotating shafts of the two rolling rollers 23 extend to the outside and are fixedly connected to transmission gears 15. The two transmission gears 15 mesh. A first mounting frame 2 is installed on the front side of the housing 1. A drive motor 3 is installed on the first mounting frame 2. The output shaft of the drive motor 3 extends into the interior of the treatment chamber 21 and is fixedly connected to the front rotating shaft of one of the rolling rollers 23. When the rolling roller 23 rotates, the fabric soaked in liquid ammonia is rolled by the rolling roller 23 to improve the treatment effect of the fabric.
[0021] The housing 1 has a second mounting bracket 19 installed on its rear side. A gearbox 16 is mounted on the second mounting bracket 19. The input shaft of the gearbox 16 is fixedly connected to the rear end of the rotating shaft of one of the rolling rolls 23. The output end of the gearbox 16 is fixedly connected to a drive disc 14. A linkage rod 13 is rotatably connected to the rear eccentric part of the drive disc 14. The other end of the linkage rod 13 is rotatably connected to the right side of the piston plate 12. The gearbox 16 is an accelerator that allows the drive disc 14 to rotate quickly, ensuring a negative pressure effect.
[0022] The system also includes a detection mechanism, which comprises symmetrically arranged grooves 28 at the top and bottom of the first loop frame 8. Each groove 28 has a reciprocating screw 29 rotatably connected between its left and right inner walls. Each reciprocating screw 29 is equipped with a matching slider 30. When the reciprocating screw 29 rotates, the slider 30 moves back and forth within the groove 28. Each slider 30 is slidably connected to the inner wall of the corresponding groove 28. Ammonia detection heads 31 are installed on opposite sides of the two sliders 30. A connecting frame 6 is installed at the upper end of the housing 1, and an alarm 7 is installed at the upper end of the connecting frame 6. The front end of the lower reciprocating screw 29 extends to the outside. The lower reciprocating screw 29 and the output shaft of the drive motor 3 are each equipped with a first synchronous pulley 4. The two first synchronous pulleys 4 are connected by a first synchronous belt 5. The rear ends of the two reciprocating screws 29 extend to the outside and are equipped with second synchronous pulleys 17. The two second synchronous pulleys 17 are connected by a second synchronous belt 18.
[0023] In this invention, the fabric body 10 enters the processing cavity 21 through the first loop frame 8 on the left side of the housing 1. Under the guidance of three L-shaped guide rollers 22 in the guiding mechanism, the fabric body 10 moves along a specific path in the processing cavity 21.
[0024] The bottom of the processing chamber 21 is filled with liquid ammonia, and the fabric body 10 is immersed in liquid ammonia during the movement. At the same time, the drive motor 3 on the first mounting frame 2 starts, and its output shaft drives one of the rolling rollers 23 fixedly connected to it to rotate. The transmission gear 15 at the rear end of the rotating shaft of the rolling roller 23 rotates accordingly. By meshing with another transmission gear 15, it drives the other rolling roller 23 to rotate synchronously. The fabric body 10 immersed in liquid ammonia is rolled between the two rolling rollers 23, which improves the liquid ammonia treatment effect. The transmission 16 on the second mounting bracket 19 at the rear of the housing 1 has its input shaft fixedly connected to the rear end of the rotating shaft of one of the rolling rolls 23. The transmission 16 outputs power to the drive disc 14, which rotates rapidly. This rotation, via the eccentrically connected linkage rod 13, causes the piston plate 12 inside the piston cylinder 11 to slide left and right. When the piston plate 12 slides to the right, air inside the processing chamber 21 enters the space on the left side of the piston cylinder 11 through the first one-way pipe 24. When the piston plate 12 slides to the left, air in the space on the left side of the piston cylinder 11 is discharged through the second one-way pipe 25. This cycle creates a negative pressure inside the housing 1, preventing ammonia from leaking from the first loop frame 8. When the drive motor 3 starts, the first synchronous pulley 4 on its output shaft drives the first synchronous pulley 4 located at the front end of the lower reciprocating lead screw 29 to rotate via the first synchronous belt 5, thereby driving the lower reciprocating lead screw 29 to rotate; the second synchronous pulley 17 at the rear end of the lower reciprocating lead screw 29 drives the second synchronous pulley 17 at the rear end of the upper reciprocating lead screw 29 to rotate via the second synchronous belt 18, so that the two reciprocating lead screws 29 rotate synchronously. When the two reciprocating lead screws 29 rotate, the slider 30 on them drives the ammonia detection head 31 to move back and forth between the top and bottom of the first loop frame 8, performing a comprehensive ammonia detection at the first loop frame 8. If an ammonia leak is detected, the ammonia detection head 31 transmits a signal to the alarm 7 at the upper end of the connecting frame 6, and the alarm 7 sounds an alarm to remind the staff to deal with it in time.
[0025] After being treated with liquid ammonia and rolled, the main body of the fabric 10 is led out through the second loop frame 9 on the right side of the shell 1.
[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A liquid ammonia padding apparatus for ultra-fine fiber low-tension woven fabric, characterized by, Include: The shell (1) is internally provided with a processing cavity (21), the processing cavity (21) is filled with liquid ammonia in the bottom, and the two side walls of the processing cavity (21) are provided with strip-shaped ports; The negative pressure mechanism includes a piston cylinder (11) mounted on the rear side of the shell (1), the piston cylinder (11) is provided with a left-right slidable piston plate (12), the left side space of the piston cylinder (11) is communicated with the inside of the shell (1) through a first one-way pipe (24), the left side space of the piston cylinder (11) is communicated with a second one-way pipe (25), the first one-way pipe (24) is internally provided with a first one-way valve (26), the second one-way pipe (25) is internally provided with a second one-way valve (27), the use of the negative pressure mechanism can produce negative pressure in the shell (1), avoiding ammonia leakage; The guide mechanism is used for guiding the cloth; The rolling mechanism is used for improving the treatment effect of liquid ammonia.
2. A liquid ammonia padding apparatus for a microfiber low-tension woven fabric according to claim 1, wherein The first one-way valve (26) flows into the piston cylinder (11) from the processing cavity (21), and the second one-way valve (27) flows out of the piston cylinder (11) to the outside.
3. A liquid ammonia padding apparatus for a microfiber low-tension woven fabric according to claim 1, wherein The guide mechanism includes three guide rollers (22) arranged in the processing cavity (21), and the three guide rollers (22) are arranged in an L shape.
4. The liquid ammonia padding apparatus for ultra-fine fiber low-tension woven fabric according to claim 1, characterized in that, The rolling mechanism includes two rolling rollers (23) rotatably connected between the front and rear inner walls of the processing cavity (21), the rear ends of the rotating shafts of the two rolling rollers (23) extend to the outside, and are fixedly connected with transmission gears (15), the two transmission gears (15) are engaged, a first mounting bracket (2) is mounted on the front side of the shell (1), a driving motor (3) is mounted on the first mounting bracket (2), the output shaft of the driving motor (3) extends to the inside of the processing cavity (21) and is fixedly connected with the front end rotating shaft of one of the rolling rollers (23), and three guide rollers (22) are provided with a fabric main body (10) in common.
5. A liquid ammonia padding apparatus for a microfiber low-tension woven fabric according to claim 4, wherein A second mounting bracket (19) is mounted on the rear side of the shell (1), a transmission (16) is mounted on the second mounting bracket (19), the input shaft of the transmission (16) is fixedly connected with the rear end of the rotating shaft of one of the rolling rollers (23), the output end of the transmission (16) is fixedly connected with a driving disc (14), the rear side eccentric portion of the driving disc (14) is rotatably connected with a linkage rod (13), and the other end of the linkage rod (13) is rotatably connected with the right side of the piston plate (12).
6. The liquid ammonia padding apparatus for ultra-fine fiber low-tension woven fabric according to claim 1, wherein A second back-shaped frame (9) is mounted on the right side of the shell (1), and a first back-shaped frame (8) is mounted on the left side of the shell (1).
7. A liquid ammonia padding apparatus for a microfiber low-tension woven fabric according to claim 6, wherein It also includes detection mechanism, the detection mechanism includes chute (28) that is symmetrically opened in first meander frame (8) top and inner bottom, the left and right two sides of each chute (28) inner wall is rotatably connected with reciprocating screw rod (29), each reciprocating screw rod (29) is provided with the slider (30) that can cooperate, each slider (30) is slidably connected with the inner wall of corresponding chute (28), the opposite side of two sliders (30) is equipped with ammonia detection head (31), the upper end of shell (1) is installed with connecting frame (6), the upper end of connecting frame (6) is installed with alarm (7).
8. A liquid ammonia padding apparatus for a microfiber low-tension woven fabric according to claim 7, wherein The front end of the reciprocating screw rod (29) located below extends to the outside, the reciprocating screw rod (29) located below is installed with first synchronous wheel (4) on the output shaft of driving motor (3), two first synchronous wheels (4) are drivenly connected through first synchronous belt (5), the rear end of two reciprocating screw rods (29) extends to the outside and is installed with second synchronous wheel (17), two second synchronous wheels (17) are drivenly connected through second synchronous belt (18).