A process for producing a spunlace fabric

Abstract

The application relates to a spunlace fabric production process and relates to the technical field of spunlace fabric production, which comprises the steps of fiber raw material, opening and mixing, carding and random webbing, pre-wetting, positive and reverse water jetting, post finishing, drying, winding and water treatment, wherein the water treatment step comprises a front pressure collection step, a rear pressure collection step and a calculation step; in the front pressure collection step, a sensor collects the water pressure before filtering of a filter screen; in the rear pressure collection step, the sensor collects the water pressure after filtering of the filter screen; in the calculation step, the difference between the water pressure before filtering and the water pressure after filtering is calculated, and when the difference is not within a standard interval, a prompt is given. The application has the advantages that the operator can be reminded of clogging in time, so that the filtering effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spunlace production, in particular to a spunlace production process. BACKGROUND

[0002] The concept of "spunlace" comes from the mechanical needle process. So-called "spunlace" is to use high-pressure water flow to penetrate into the fiber web, so that the fibers are entangled with each other, and the originally loose fiber web has certain strength and complete structure. The process flow is: fiber metering mixing - opening and removing impurities - mechanical random carding - pre-wetting - forward and reverse water jet - drying - winding - inspection - packaging into warehouse. In the process of producing spunlace, because it needs to use a large amount of water resources, therefore, in the water jet and preset steps, the water generated after treatment will be recycled, and in the recycling process, the water needs to be filtered, and when used for a long time, the filter screen is easy to be blocked, resulting in poor filtering effect. SUMMARY

[0003] In view of the defects in the prior art, one of the purposes of the present application is to provide a spunlace production process which can timely remind the operator of blockage, thereby ensuring good filtering effect.

[0004] The above purpose of the present application is realized by the following technical scheme:

[0005] A spunlace production process, comprising fiber raw material, opening and mixing, carding and random webbing, pre-wetting, forward and reverse water jet, finishing, drying, winding and water treatment steps, the water treatment step comprises a front pressure acquisition step, a rear pressure acquisition step and a calculation step, in the front pressure acquisition step, the sensor acquires the water pressure before the filter screen filters, in the rear pressure acquisition step, the sensor acquires the water pressure after the filter screen filters, in the calculation step, the difference between the water pressure before filtering and the water pressure after filtering is calculated, and when the difference is not in the standard interval, a prompt is given.

[0006] By adopting the above technical scheme, when the difference between the water pressure before filtering and the water pressure after filtering is not in the standard interval in use, it indicates that the filter screen is blocked, so a prompt is given, and the operator can replace the filter screen in time after receiving the prompt, thereby ensuring good filtering effect.

[0007] The application can be further configured in a preferred example that the water treatment step comprises a control module, a front water pressure detection module and a rear water pressure detection module, the front water pressure detection module is installed before the filter screen to detect the water pressure before filtration, the rear water pressure detection module is installed after the filter screen to detect the water pressure after filtration, the front water pressure detection module and the rear water pressure detection module send the detected data to the control module, the control module performs difference calculation on the received data, and prompts when the difference is not in the standard interval.

[0008] By adopting the above technical scheme, in use, the front water pressure detection module and the rear water pressure detection module detect the water pressure before and after filtration respectively, and the control module performs difference calculation, and prompts the operator when the difference is not in the standard interval.

[0009] The application can be further configured in a preferred example that the water treatment step further comprises a replacement device, the replacement device comprises a main pipe, a filter screen and a replacement mechanism, the filter screen is arranged in the main pipe, and the replacement mechanism is used to replace the filter screen in the main pipe.

[0010] By adopting the above technical scheme, in use, the replacement mechanism replaces the filter screen in the main pipe, so that the good filtration effect can be maintained.

[0011] The application can be further configured in a preferred example that the replacement mechanism comprises a removal assembly and a replacement assembly, the removal assembly is used to remove the blocked filter screen from the main pipe, and the replacement assembly is used to place the unblocked filter screen into the main pipe.

[0012] By adopting the above technical scheme, in use, the removal assembly replaces the blocked filter screen, and the replacement assembly places the unblocked filter screen into the main pipe, so that the replacement of the blocked filter screen is completed.

[0013] The application can be further configured in a preferred example that the removal assembly comprises a removal plate, the main pipe is provided with a moving slot for the removal plate to move in and out of the main pipe, and the removal plate is provided with a mounting slot for accommodating the filter screen.

[0014] By adopting the above technical scheme, in use, the blocked filter screen is located in the mounting slot, the removal plate drives the blocked filter screen to move out through the moving slot, so that the replacement of the blocked filter screen is realized.

[0015] The application can be further configured in a preferred example that the main pipe is internally provided with guide columns, the guide columns are at least three and the included angle between adjacent guide columns is equal, the guide columns are fixedly connected with the inner wall of the main pipe, the filter screen is provided with a sliding groove matched with the guide columns, and the filter screen can slide in the main pipe.

[0016] By adopting the technical scheme, in use, the filter screen can move in the main pipe, and thus is more easily moved into the installation slot when the filter screen is blocked.

[0017] The application can be further configured in a preferred example that the main pipe is internally further provided with a limiting assembly, the limiting assembly is located below the installation slot, the limiting assembly is used to limit the movement of the filter screen when the filter screen is not blocked, and the limiting assembly cancels the limitation on the filter screen when the filter screen is blocked.

[0018] By adopting the technical scheme, in use, when the filter screen is blocked, the filter screen breaks through the limitation of the limiting assembly and thus enters the installation slot.

[0019] The application can be further configured in a preferred example that the installation slot is internally provided with a connecting piece used to fixedly connect the filter screen.

[0020] By adopting the technical scheme, in use, when the filter screen moves into the installation slot, the connection with the old plate is better.

[0021] The application can be further configured in a preferred example that the replacement assembly comprises a replacement pipe and a water inlet pipe, the replacement pipe and the water inlet pipe are both in communication with the main pipe, the water inlet pipe is arranged above the replacement pipe, the replacement pipe is internally provided with a filter screen, and the filter screen is movable into the main pipe under the action of water pressure.

[0022] By adopting the technical scheme, in use, when the blocked filter screen is removed, the filter screen in the replacement pipe enters the main pipe to perform filtering, so that the replacement of the filter screen is realized.

[0023] The application can be further configured in a preferred example that the control module further comprises a countdown unit, the countdown unit performs countdown when the difference is not in the standard interval, and the control module performs strong prompting when the difference is still not in the standard interval after the countdown is ended.

[0024] By adopting the technical scheme, after a period of time of issuing the prompt, the difference is still not in the standard interval, indicating that the filter screen is not replaced, and thus strong prompting is performed to attract the attention of an operator. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1This is a schematic diagram of the application process structure.

[0026] Fig. 2 This is a schematic diagram illustrating the principle of this application.

[0027] Fig. 3 This is a schematic diagram of the replacement device in this application.

[0028] Figure reference numerals: 11. Fiber raw material; 12. Opening and blending; 13. Carding and forming a web; 14. Pre-wetting; 15. Hydroentangling (both forward and reverse); 16. Finishing; 17. Drying; 18. Winding; 19. Water treatment; 2. Control module; 21. Countdown unit; 22. Indication unit; 3. Front water pressure detection module; 4. Rear water pressure detection module; 5. Main pipe; 51. Moving slot; 52. Replacement port; 53. Limiting valve 531. Ring; 532. Large ring opening; 533. Small ring opening; 534. Deformation groove; 55. Guide post; 56. Limiting protrusion; 6. Old removal component; 61. Old removal plate; 611. Mounting groove; 62. Drive component one; 7. Replacement component; 71. Replacement plate; 711. Replacement groove; 712. Auxiliary post; 72. Drive component two; 81. Replacement pipe; 82. Inlet pipe; 9. Filter screen; 91. Ring body; 92. Mesh body. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] Reference Figs. 1-3 This application discloses a spunlace fabric production process, which includes fiber raw material 11, opening and mixing 12, carding and randomizing into a web 13, pre-wetting 14, forward and reverse spunlace 15, finishing 16, drying 17, winding 18, and water treatment 19. The water treatment 19 step includes a pre-pressure acquisition step, a post-pressure acquisition step, and a calculation step. In the pre-pressure acquisition step, a sensor acquires the water pressure before filtration by the filter screen 9. In the post-pressure acquisition step, a sensor acquires the water pressure after filtration by the filter screen 9. In the calculation step, the difference between the water pressure before filtration and the water pressure after filtration is calculated. When the difference is not within the standard range, a prompt is given.

[0031] The water treatment 19 step comprises a control module 2, a front water pressure detection module 3 and a rear water pressure detection module 4. The control module 2 comprises a countdown unit 21 and a prompt unit 22. The front water pressure detection module 3 is installed before the filter screen 9 to detect the water pressure before filtration. The rear water pressure detection module 4 is installed after the filter screen 9 to detect the water pressure after filtration. The front water pressure detection module 3 and the rear water pressure detection module 4 send the detected data to the control module 2. The control module 2 performs difference calculation on the received data. When the difference is not within the standard range, the prompt unit 22 prompts. The countdown unit 21 counts down. When the countdown ends and the difference is still not within the standard range, the countdown unit 21 sends a prompt signal to the prompt unit 22. The prompt unit 22 prompts after receiving the prompt signal. In this embodiment, the prompt is a single sensory prompt, such as an auditory or visual prompt. The strong prompt is a total sensory prompt, such as an auditory and visual prompt.

[0032] The water treatment 19 step comprises a replacement device. The replacement device comprises a main pipe 5, a filter screen 9 and a replacement mechanism. The lower end of the main pipe is provided with a drain valve. The replacement mechanism comprises an old component removal assembly 6 and a new component replacement assembly 7. The filter screen 9 comprises a ring body 91 and a screen body 92 fixedly connected to the ring body 91. The ring body 91 comprises iron material that can be attracted by a magnet. The new component replacement assembly 7 is arranged below the old component removal assembly 6. The old component removal assembly 6 comprises an old component removal plate 61 and a driving member 62 for driving the old component removal plate 61 to move. The main pipe 5 is provided with a moving slot 51. The old component removal plate 61 is moved out of the main pipe 5 under the driving of the driving member 62. The moving slot 51 is provided with a rubber layer for abutting against the old component removal plate 61 to form a sealing structure. The old component removal plate 61 is provided with a mounting groove 611 for accommodating the filter screen 9. The mounting groove 611 is provided with a connecting member for fixing the filter screen 9. In this embodiment, the connecting member is a magnet that attracts the ring body 91.

[0033] The main pipe 5 is further provided with a limiting assembly. The limiting assembly comprises a limiting ring 53. The limiting ring 53 is fixedly connected to the main pipe 5 and is made of rubber. The limiting ring 53 is located below the old component removal plate 61. The limiting ring 53 comprises a large ring opening 531 and a small ring opening 532. The diameter of the large ring opening 531 is greater than that of the small ring opening 532, and the large ring opening 531 is located below the small ring opening 532. The diameter of the small ring opening 532 is slightly smaller than the outer diameter of the ring body 91. For example, the diameter of the small ring opening 532 is 0.5-1 mm smaller than the outer diameter of the ring body 91. In order to increase the deformation effect, the limiting ring 53 can be further provided with a deformation groove 533 extending to the small ring opening 532 near the small ring opening 532.

[0034] The inner wall of the main pipe 5 is further fixedly connected with guide columns 54, the upper ends of the guide columns 54 extend to the connection between the large ring opening 531 and the main pipe 5, the guide columns 54 are at least three, in this embodiment, three, and the included angles between adjacent guide columns 54 are equal, the ring body 91 is further provided with sliding grooves matched with the guide columns 54, and the filter screen 9 can slide in the main pipe 5. The guide columns 54 are further provided with limiting convex points 55, the limiting convex points 55 are made of rubber and located below the limiting ring 53.

[0035] The replacement assembly 7 includes a replacement pipe 81, a water inlet pipe 82 and a replacement part, the water inlet pipe 82 is arranged above the replacement pipe 81 and below the limiting convex points 55, the water inlet pipe 82 and the replacement pipe 81 are both in communication with the main pipe 5, the water inlet pipe 82 and the replacement pipe 81 are both provided with valves and connected with the water outlet of the same water pump. The replacement part includes a replacement plate 71 and a driving part two 72, the replacement plate 71 is provided with a replacement groove 711 for accommodating the filter screen 9, the replacement groove 711 is provided with an auxiliary column 712 coaxial with the guide column 54, the replacement pipe 81 is provided with a replacement opening 52, and the replacement opening 52 is fixedly connected with a rubber layer for abutting against the replacement plate 71. The replacement plate 71 can enter into the replacement pipe 81 from the replacement opening 52 under the action of the driving part two 72. In this embodiment, the driving part one 62 and the driving part two 72 can be electric push rods, hydraulic cylinders or air cylinders.

[0036] The implementation principle of the embodiment is that: in use, the valve on the replacement pipe 81 is in a closed state, the valve on the water inlet pipe 82 is in a conductive state, the water pump draws water into the water inlet pipe 82, and the water enters the main pipe 5 through the water inlet pipe 82, at this time, the filter screen 9 is located above the limiting protrusion 55, under the action of the water flow, the filter screen 9 will move upwards until it moves to the small ring opening 532, when the filter screen 9 is blocked, the resistance of the filter screen 9 to the water flow increases, so under the action of the water flow pressure, the filter screen 9 will exert pressure on the small ring opening 532, so that the small ring opening 532 deforms until the filter screen 9 moves out of the small ring opening 532 and moves into the installation groove 611, when the filter screen 9 is located in the installation groove 611, the ring body 91 is attracted by the magnet, in this process, the difference between the pre-filtering water pressure and the post-filtering water pressure is not in the standard interval, the control module 2 controls the water pump to stop working after a period of time, controls the drain valve to open, the water in the main pipe 5 is drained from the drain valve, controls the valve on the replacement pipe 81 to be conductive, the valve on the water inlet pipe 82 is closed, and controls the driving part one 62 to drive the old plate removing part 61 to move, so that the filter screen 9 moves out of the main pipe 5, controls the driving part two 72 to move, so that the new plate replacing part 71 moves into the replacement pipe 81, and then the unblocked filter screen 9 moves into the replacement pipe 81, and then the water pump works, the water enters the main pipe 5 from the replacement pipe 81, in this process, the filter screen 9 moves into the main pipe 5 under the action of the water pressure and breaks through the limitation of the limiting protrusion 55 under the action of the water pressure, and moves to the small ring opening 532, then the valve on the replacement pipe 81 is closed, and the valve on the water inlet pipe 82 is opened, when the replacement is completed, the difference between the pre-filtering water pressure and the post-filtering water pressure is in the standard interval.

[0037] The embodiments of the specific implementation are the preferred embodiments of the application, but do not limit the protection scope of the application, so: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A process for the production of a hydroentangled fabric comprising the steps of fiber feedstock (11), opening and mixing (12), carding and random web formation (13), pre-wetting (14), forward and reverse hydroentanglement (15), post finishing (16), drying (17), winding (18) and water treatment (19), characterized in that: The water treatment (19) step includes a front pressure collection step, a rear pressure collection step and a calculation step. In the front pressure collection step, a sensor collects the water pressure before the filter screen (9) filters. In the rear pressure collection step, a sensor collects the water pressure after the filter screen (9) filters. In the calculation step, the difference between the water pressure before filtering and the water pressure after filtering is calculated, and a prompt is given when the difference is not within the standard range. The water treatment (19) step includes a control module (2), a front water pressure detection module (3) and a rear water pressure detection module (4). The front water pressure detection module (3) is installed before the filter screen (9) to detect the water pressure before filtering. The rear water pressure detection module (4) is installed after the filter screen (9) to detect the water pressure after filtering. The front water pressure detection module (3) and the rear water pressure detection module (4) send the detected data to the control module (2). The control module (2) calculates the difference of the received data, and gives a prompt when the difference is not within the standard range. The water treatment (19) step also includes a replacement device. The replacement device includes a main pipe (5), a filter screen (9) and a replacement mechanism. The filter screen (9) is arranged in the main pipe (5). The replacement mechanism is used to replace the filter screen (9) in the main pipe (5). The replacement mechanism includes a removal assembly (6) and a replacement assembly (7). The removal assembly (6) is used to remove the clogged filter screen (9) from the main pipe (5). The replacement assembly (7) is used to place the unclogged filter screen (9) into the main pipe (5). The removal assembly (6) includes a removal plate (61). The main pipe (5) is provided with a moving slot (51) for the removal plate (61) to move in and out of the main pipe (5). The removal plate (61) is provided with a mounting groove (611) for accommodating the filter screen (9). The main pipe (5) is provided with guide columns (54). There are at least three guide columns (54), and the included angles between adjacent guide columns (54) are equal. The guide columns (54) are fixedly connected with the inner wall of the main pipe (5). The filter screen (9) is provided with a sliding groove matched with the guide columns (54). The filter screen (9) can slide in the main pipe (5). The main pipe (5) is also provided with a limiting assembly. When the filter screen (9) is not clogged, the limiting assembly is used to limit the movement of the filter screen (9). When the filter screen (9) is clogged, the limiting assembly cancels the limitation of the filter screen (9). The limiting assembly includes a limiting ring (53). The limiting ring (53) is fixedly connected with the main pipe (5) and is made of rubber. The limiting ring (53) is located below the removal plate (61). The limiting ring (53) includes a large ring opening (531) and a small ring opening (532). The diameter of the large ring opening (531) is larger than that of the small ring opening (532), and the large ring opening (531) is located below the small ring opening (532).The replacement assembly (7) comprises a replacement pipe (81) and a water inlet pipe (82), the replacement pipe (81) and the water inlet pipe (82) are communicated with the main pipe (5), the water inlet pipe (82) is arranged above the replacement pipe (81), the replacement pipe (81) is provided with a filter screen (9), the filter screen (9) is movable into the main pipe (5) under the action of water pressure, the mounting groove (611) is provided with a connecting piece for fixing and connecting the filter screen (9), the connecting piece is a magnet, the filter screen (9) comprises a ring body (91) and a screen body (92) fixedly connected with the ring body (91), and the ring body (91) can be adsorbed by the magnet.

2. A process for producing a hydroentangled fabric according to claim 1, characterized in that: The control module (2) further comprises a countdown unit (21), when the difference is not in the standard interval, the countdown unit (21) counts down, and when the countdown ends and the difference is still not in the standard interval, the control module (2) gives a strong prompt.

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