A fabric vacuum dewatering device

Abstract

The utility model discloses a kind of fabric vacuum dewatering devices, it includes vacuum water absorption tank and rotatable first press roll, vacuum water absorption tank includes the slot cover of slot body and being buckled, first press roll is located above slot cover, the slot cover with the first press roll coaxial arrangement, slot cover and first press roll between there is gap, fabric passes through and respectively with slot cover and first press roll and paste, several water inlets that slot cover is parallelly spaced apart and is communicated with slot body on slot cover along the length direction of slot cover, each water inlet is the strip-shaped hole that is obliquely arranged from the width direction of slot cover one side to another side;The spiral line of making roll surface present concave-convex undulating form is arranged on the roll surface of the first press roll, the projection of the spiral line on the slot cover is grid-shaped intersection with each water inlet. The device makes that each point of cloth surface passes through vacuum water absorption tank at least three times is in water absorption state, improves the vacuum water absorption efficiency and the uniformity of vacuum water absorption of fabric, especially loose fabric.

Description

Technical Field

[0001] This utility model relates to the field of printing and dyeing machinery and equipment, and in particular to a fabric vacuum dehydration device. Background Technology

[0002] Vacuum dehydration before fabric drying is an important pretreatment step in textile dyeing and finishing. Its core is to use the principle of vacuum negative pressure to quickly remove excess moisture from the fabric, thereby reducing energy consumption in subsequent drying processes, improving production efficiency, and reducing the damage of high temperature to fabric performance.

[0003] Chinese utility model patent No. 202222555563.X discloses a fabric absorbent, which includes a frame, an air suction box and a negative pressure source mounted on the frame. The upper surface of the air suction box has multiple absorbent holes distributed along the width of the fabric. The negative pressure port of the negative pressure source is connected to the air suction box via a negative pressure pipe. The absorbent holes are strip-shaped, and the projections of adjacent absorbent holes along the width of the fabric overlap. In this patent, the extra suction ports at both ends of the suction head are blocked by a pressure belt adjusted to the same width as the fabric to prevent harmful airflow. This windproof structure suffers from drawbacks such as complex structure, complex control, high manufacturing cost, unsatisfactory performance, and numerous after-sales problems. Furthermore, because there are gaps between the fabric fibers, the smaller the gaps, the smaller the airflow area, and the higher the air velocity during vacuum absorption, the more water is carried away from the fibers. However, for loosely woven fabrics, due to the larger gaps between the fibers, the absorbent's performance is poor. Utility Model Content

[0004] The purpose of this invention is to provide a fabric vacuum dehydration device.

[0005] The technical solution to achieve the purpose of this utility model is: a fabric vacuum dewatering device, which includes a vacuum water absorption tank and a first pressure roller. The vacuum water absorption tank includes a tank body and a tank cover that are interlocked. A water intake port is provided on the tank body and the water intake port is connected to a vacuum pump pipe. The first pressure roller is located above the tank cover. The tank cover is arc-shaped and coaxially arranged with the first pressure roller. There is a gap between the tank cover and the first pressure roller. The fabric passes through the gap and is respectively attached to the tank cover and the first pressure roller. Several water inlets connected to the tank body are arranged parallel to each other along the length direction of the tank cover. Each water inlet is a strip-shaped hole that is inclined from one side to the other side in the width direction of the tank cover. The first pressure roller is a drive roller. The roller surface of the first pressure roller is provided with a spiral pattern that makes the roller surface undulating. The projection of the spiral pattern on the tank cover intersects with each water inlet in a grid pattern.

[0006] Furthermore, the projection of the spiral pattern on the trough cover intersects almost perpendicularly with each of the water inlets. This near-perpendicular intersection minimizes the airflow area and maximizes the wind speed; moreover, multiple intersections can occur, resulting in more water absorption points and a more uniform distribution of these points.

[0007] Furthermore, the vacuum suction tank is vertically and flexibly mounted on the frame. This allows for adjustment of the distance between the vacuum suction tank and the first pressure roller according to the thickness of the fabric.

[0008] Furthermore, a second pressure roller, which can move linearly to one side of the first pressure roller, is installed on the side of the first pressure roller. The second pressure roller is a passive roller and is located on the fabric's travel path. There is a fabric-feeding gap between the first pressure roller and the second pressure roller. When the second pressure roller is working, it contacts the first pressure roller, which on the one hand can offset part of the friction generated at the vacuum water absorption point that resists the fabric's forward movement, and on the other hand can apply appropriate pressure to make the fabric cleaner.

[0009] The fabric vacuum dewatering device of this utility model has a groove cover coaxial with the first pressure roller, and only a fabric-feeding gap is left between the groove cover and the first pressure roller, so that the distance between the first pressure roller and the groove cover is uniform. At the same time, after the spiral pattern intersects with the water inlet, an air inlet channel is formed between adjacent spirals. One water inlet is divided into several small water inlets, which increases the air pressure of the air inlet. Moreover, each point on the fabric surface is in a water-absorbing state at least three times after passing through the vacuum water absorption groove, which improves the vacuum water absorption efficiency and uniformity of the fabric, especially the loose fabric. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of the fabric vacuum dewatering device according to an embodiment of the present invention; where the arrows represent the travel path of the fabric.

[0011] Figure 2 for Figure 1 Enlarged structural diagram of section A;

[0012] Figure 3 This is a left-side structural schematic diagram of the fabric vacuum dewatering device described in an embodiment of this utility model;

[0013] Figure 4 This is a top view of the groove cover according to an embodiment of the present utility model.

[0014] Figure 5 This is a schematic diagram of the projection of the spiral pattern described in this embodiment of the invention onto the groove cover. Detailed Implementation

[0015] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] like Figures 1 to 5 As shown, a fabric vacuum dewatering device includes a vacuum suction tank 1 and a first pressure roller 2. The vacuum suction tank 1 is vertically mounted on a frame and includes a tank body 11 and a tank cover 12 that interlock. A suction port 111 is provided at the bottom of the tank body 11 and is connected to a vacuum pump (not shown) via a pipe. The first pressure roller 2 is located above the tank cover 12, which is coaxially arranged with the first pressure roller 2. A gap D exists between the tank cover 12 and the first pressure roller 2, through which the fabric 100 passes. The water inlets 121, which are connected to the trough cover 12 and the first pressure roller 2 respectively, are arranged parallel to each other along the length of the trough cover 12. Each water inlet 121 is a strip-shaped hole that is inclined from one side to the other in the width direction of the trough cover 12. The first pressure roller 2 is an active roller. The roller surface of the first pressure roller is provided with spiral patterns 21 that make the roller surface undulating. The projection of the spiral patterns 21 on the trough cover 12 is almost perpendicular to each of the water inlets 121.

[0017] Furthermore, a second pressure roller 3 that can move linearly to the side of the first pressure roller 2 is installed on the side of the first pressure roller 2. The second pressure roller 3 is a passive roller. The second pressure roller 2 is located on the travel path of the fabric 100. There is a fabric-feeding gap between the first pressure roller 2 and the second pressure roller 3.

[0018] During operation, the fabric 100 passes between the vacuum absorption tank 1 and the first pressure roller 2, and is respectively attached to the tank cover 12 and the first pressure roller 2. The spiral pattern 21 of the first pressure roller 2 intersects with the water inlet 121 on the tank cover in a grid pattern, forming air intake channels between adjacent spirals, and dividing each water inlet 121 on the tank cover 12 into several small water inlets, increasing the air pressure at the water inlet. The air at the feeding end carries the moisture in the fabric 100 into the tank body 11 of the vacuum absorption tank, and is then extracted through the suction port 111. During this process, the rotating first pressure roller 2 drives the fabric 100 forward. The curvature of the bottom of the first pressure roller 2 ensures that each point on the fabric surface is in a water-absorbing state at least three times when passing through the vacuum absorption tank 1, and the vacuum absorption uniformity is good. At the same time, when the second pressure roller 3 is working, it comes into contact with the first pressure roller 2. On the one hand, it can offset part of the resistance to the fabric's forward movement caused by the friction generated at the vacuum water absorption point. On the other hand, it can apply appropriate pressure to the fabric passing between the first and second pressure rollers, thereby making the fabric cleaner.

[0019] This invention improves the vacuum water absorption efficiency and uniformity of fabrics, especially loosely woven fabrics. Compared with the prior art, it does not require an additional windproof structure, and the vacuum dehydration structure is simpler.

[0020] The number and density of the water inlets described in this utility model are customized according to production needs, and the size of the vacuum cavity formed by the tank can also be customized as needed.

[0021] The gap between the groove cover and the first pressure roller is slightly larger than the thickness of the fabric. On the one hand, this allows the fabric to pass through the gap between the groove cover and the first pressure roller. On the other hand, this gap ensures that air on the fabric surface can be drawn into the vacuum water absorption groove.

[0022] The lifting structure of the vacuum suction tank can be a conventional lifting structure in the mechanical field, such as a screw jack, and will not be described in detail here. The liftable design allows the gap between the vacuum suction tank and the first pressure roller to be finely adjusted according to different fabric thicknesses, and also facilitates the fabric feeding operation.

[0023] The second pressure roller is set as needed. The linear displacement structure of the second pressure roller is a conventional structure in the mechanical field and will not be described in detail here.

[0024] The projection of the oblique ridge on the trough cover should intersect with the water inlet. When the ridges intersect almost perpendicularly, the resulting airflow area is minimized and the wind speed is maximized. Furthermore, multiple intersections can be formed, resulting in more water absorption points and a more uniform arrangement of these points.

[0025] Furthermore, the terms "first" and "second" are used only to distinguish between the same structural components and should not be interpreted as indicating or implying relative importance.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent process transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fabric vacuum dewatering apparatus characterized by: It includes a vacuum water suction tank and a first compression roller, the vacuum water suction tank includes a slot body and a slot cover, the slot body is provided with a water suction port, the water suction port is communicated with a vacuum pump pipeline, the first compression roller is located above the slot cover, the slot cover is arc-shaped, the slot cover is coaxially arranged with the first compression roller, the slot cover and the first compression roller have a gap, the fabric passes through the gap and is attached to the slot cover and the first compression roller respectively, a plurality of water inlet ports communicated with the slot body are arranged on the slot cover in parallel along the length direction of the slot cover, each water inlet port is a strip-shaped hole obliquely arranged from one side to the other side of the width direction of the slot cover; the first compression roller is a driving roller, the roller surface of the first compression roller is provided with a spiral thread that makes the roller surface present a concave-convex undulating form, the projection of the spiral thread on the slot cover and each water inlet port are grid-shapedly crossed.

2. The fabric vacuum dewatering device of claim 1, wherein: The projection of the spiral thread on the slot cover and each water inlet port are nearly vertically crossed.

3. The fabric vacuum dewatering device of claim 1, wherein: The vacuum water suction tank is installed on the rack in a lifting manner.

4. The fabric vacuum dewatering device of claim 1, wherein: A second compression roller linearly movable to one side of the first compression roller is installed on the side surface of the first compression roller, the second compression roller is a driven roller, the second compression roller is located on the running path of the fabric, and the first compression roller and the second compression roller have a cloth passing gap.

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