CN221797932U - Knitted fabric pre-shrinking device - Google Patents

Abstract

The utility model discloses a knitted fabric preshrinking device, which comprises a workbench; the steam conveying mechanism is arranged below the workbench to spray hot steam to the knitted fabric passing through the surface of the workbench; the steam recovery mechanism is covered above the workbench and sucks the steam passing through the knitted fabric through negative pressure; the steam recovery mechanism comprises a negative pressure cover covered on the workbench, the negative pressure cover is connected with a lifting assembly in a driving way, so that a channel only for the knitted fabric to pass through exists between the negative pressure cover and the table top of the workbench, at least one first negative pressure pipe is connected to the negative pressure cover, a first liquid storage tank is arranged in the inner ring of the connecting end of the first negative pressure pipe and the negative pressure cover, a suction pump is further arranged on the negative pressure cover, and a liquid suction pipe of the suction pump penetrates through the first negative pressure pipe and then stretches into the first liquid storage tank. Through the structure, the sealing performance is effectively improved, and the overflow of hot steam is avoided. Meanwhile, by arranging the first liquid storage tank, condensed water is prevented from converging and dripping on the knitted fabric.

Description

Knitted fabric pre-shrinking device

Technical Field

The utility model relates to the field of fabric preshrinkage, in particular to a knitted fabric preshrinkage device.

Background Art

Knitted fabrics have a much greater expansion rate than woven fabrics due to their fabric-making method, so they are very easy to shrink and cause the fabric size to change. In order to minimize the deformation of the fabric caused by the shrinkage stress in the knitted fabric, it is often necessary to pre-shrink the fabric.

The existing pre-shrinkage methods are generally the following three:

1. Natural pre-shrinkage: Unpack and shake the fabric before cutting, and leave it for a certain period of time without pressure or tension to allow the fabric to shrink naturally and eliminate tension.

2. Wet pre-shrinkage: Soak the fabric directly in clean water, then spread it out to dry. During this period, the fabric's moisture absorption and shrinkage are utilized to achieve pre-shrinkage of the fabric.

3. Heat pre-shrinkage: Use special heat pre-shrinkage equipment to pre-shrink the fabric. Stretch the fabric in a hot state to achieve the pre-shrinkage effect.

It should be pointed out that among the above three preshrinking methods, natural preshrinking and wet preshrinking have lower processing efficiency. Therefore, in the field of large-scale production, thermal preshrinkage accounts for the largest proportion in the preshrinkage field.

However, existing shrinking machines also have certain problems during use. First, when hot steam is withdrawn, the temperature of the hot steam decreases in the pipe and it is easy to condense and liquefy on the pipe wall, and then drip onto the knitted fabric, thereby forming water stains on the surface of the fabric, affecting the quality of the fabric; second, the existing shrinking machine is not well sealed, and hot steam is easy to overflow from both ends of the fabric in and out, resulting in a waste of hot steam.

Utility Model Content

The utility model aims to provide a knitted fabric preshrinking device to solve the problem that the preshrinking machine is prone to dripping during the preshrinking process and the hot steam overflows to cause waste.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A knitted fabric preshrinkage device, comprising

Workbench;

A steam delivery mechanism is disposed below the workbench to spray hot steam onto the knitted fabric passing over the workbench surface;

The steam recovery mechanism is installed above the workbench and uses negative pressure to extract the steam passing through the knitted fabric;

The steam recovery mechanism includes a negative pressure hood mounted on a workbench, the negative pressure hood being driven and connected to a lifting assembly so that a passage only for knitted fabrics to pass through exists between the negative pressure hood and the workbench surface, the negative pressure hood being connected to at least one first negative pressure pipe, a first liquid storage tank being arranged in an inner ring at the connecting end between the first negative pressure pipe and the negative pressure hood, the negative pressure hood being further provided with a suction pump, the suction pipe of the suction pump passing through the first negative pressure pipe and extending into the first liquid storage tank.

Preferably, barrier components are vertically arranged at both ends of the negative pressure hood to separate independent isolation chambers at both ends of the negative pressure hood, and the lower edge of the barrier component is arranged flush with the lower edge of the negative pressure hood. A second negative pressure pipe is connected above the isolation chamber, and the second negative pressure pipe is connected to the first negative pressure pipe. A second liquid storage tank is also arranged on the inner wall of the isolation chamber, and the suction pipe of the suction pump enters the isolation chamber and extends into the second liquid storage tank.

Preferably, the discharge pipe of the suction pump is connected to a liquid storage barrel, and the liquid storage barrel is fixed on the negative pressure cover.

Preferably, the barrier assembly includes a barrier plate vertically arranged in the negative pressure cover, a first rotating shaft is rotatably arranged below the barrier plate, the lower edge of the first rotating shaft is flush with the lower edge of the negative pressure cover, and a first water wiping plate is also arranged at the lower end of the barrier plate, and the first water wiping plate smoothly fits on the surface of the first rotating shaft.

Preferably, a second rotating shaft is rotatably provided at both ends of the negative pressure cover for material inlet and outlet, and the lower edge of the second rotating shaft is flush with the lower edge of the negative pressure cover. Second water wiping plates are also respectively provided at both ends of the negative pressure cover for material inlet and outlet, and the second water wiping plates smoothly fit the surface of the second rotating shaft.

Preferably, sealing plates extending downward are symmetrically arranged on the left and right sides of the negative pressure cover, and a sealing groove for sealingly inserting the sealing plate is provided on the workbench.

Compared with the prior art, the beneficial effects of the utility model are:

1. This solution collects the condensed water condensed and flowing down in the first negative pressure tube by setting a first liquid storage tank in the first negative pressure tube, so as to prevent the condensed water from dripping on the knitted fabric. The collected condensed water is quickly sucked out by the suction pump set on the negative pressure cover, so as to prevent the condensed water from overflowing in the first liquid storage tank.

2. An isolation chamber is separated by a barrier component to isolate the outside from the inside of the negative pressure hood, thereby preventing the outside cold air from entering and disturbing the internal temperature, thereby ensuring the quality of pre-shrinkage. In addition, a second negative pressure pipe is provided to promptly draw back the hot air overflowing from the negative pressure hood to ensure the efficiency of hot air recovery. A second liquid storage tank is provided in the second negative pressure pipe to receive the condensed water to prevent the condensed water from dripping onto the knitted fabric. It should be noted that the condensed water in the second liquid storage tank is promptly sucked away by the suction pump to prevent the condensed water from overflowing in the second liquid storage tank.

3. The purpose of setting up a liquid storage tank is to store the condensed water sucked by the suction pump to avoid the situation where the condensed water overflows onto the workbench due to direct discharge.

4. A first rotating shaft is arranged below the barrier component to reduce the friction between the barrier component and the knitted fabric passing through. At the same time, a first water wiping board is arranged on the first rotating shaft to wipe off the water vapor on the first rotating shaft, thereby ensuring the dryness of the surface of the first rotating shaft.

5. A second rotating shaft is provided to further reduce the friction between the lower edge of the negative pressure cover and the surface of the knitted fabric while ensuring the sealing performance, so as to ensure that the knitted fabric is not scratched. At the same time, a second water wiping board is provided to keep the surface of the second rotating shaft dry.

6. Sealing plates are arranged on the left and right sides of the negative pressure hood so that when the negative pressure hood is lowered, the sealing plates can be inserted into the sealing grooves in a sealed manner, thereby further improving the sealing performance on the left and right sides of the sealing hood and preventing hot steam from overflowing from the gap between the sealing hood and the left and right sides of the workbench.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a state diagram of the utility model when pre-shrinking;

FIG2 is a state diagram of the steam recovery mechanism of the utility model when it is raised;

FIG3 is a cross-sectional view of the present utility model.

Figure numerals: 100. workbench 101. sealing groove 200. steam conveying mechanism 201. negative pressure cover 202. lifting assembly 203. first negative pressure pipe 204. first liquid storage tank 205. suction pump 206. liquid storage barrel 207. second negative pressure pipe 208. second liquid storage tank 209. second rotating shaft 210. second water wiping plate 211. blocking plate 212. first rotating shaft 213. first water wiping plate 214. blocking assembly 215. sealing plate 300. steam recovery mechanism.

DETAILED DESCRIPTION

The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

A knitted fabric preshrinking device as shown in FIGS. 1 to 3 includes a workbench 100 , a steam recovery mechanism 300 and a steam delivery mechanism 200 .

Specifically, a plurality of air holes are evenly distributed on the workbench, and the steam delivery mechanism 200 is arranged below the workbench to spray hot steam through the air holes on the workbench 100 to the knitted fabric passing upward.

The steam recovery mechanism 300 is hooded on the workbench to absorb and reuse the hot steam after passing through the fabric. It should be noted that in this embodiment, the steam recovery mechanism 300 includes a negative pressure hood 201, which is hooded on the workbench, and a channel is left between its lower edge and the table top of the workbench for only the knitted fabric to pass through. A group of lifting components 202 that drive the negative pressure hood to move up and down on the workbench are connected to the negative pressure hood 201. Specifically, the lifting component includes at least one lifting cylinder vertically installed on the negative pressure hood and a pillar fixed on the support surface, and the lifting cylinder is vertically installed on the pillar to drive the negative pressure hood to move vertically. At the same time, at least one first negative pressure pipe 203 is also connected to the negative pressure hood 201, one end of the first negative pressure pipe is connected to the negative pressure hood, and the other end is connected to the negative pressure suction device to timely withdraw the hot steam in the negative pressure hood. In order to prevent the condensed water condensed on the wall of the first negative pressure pipe 203 from dripping onto the knitted fabric and affecting the pre-shrinkage quality. A first liquid storage tank 204 is also provided on the inner wall of the connection between the first negative pressure pipe and the negative pressure cover. When the condensed water flows down along the wall of the first negative pressure pipe, it is collected in the first liquid storage tank. In order to prevent the condensed water from overflowing in the first liquid storage tank, a suction pump 205 is also provided on the negative pressure cover. After the suction pipe extending from the suction pump passes through the wall of the first negative pressure pipe, the end thereof extends into the first liquid storage tank to suck the condensed water in the first liquid storage tank out to the outside in time.

It should be noted that, on the basis of the above scheme, in order to improve the sealing of the negative pressure hood 201, especially to prevent external air from directly entering the working chamber of the negative pressure hood, and the hot steam in the negative pressure hood from overflowing. Barrier components 214 are also vertically arranged at both ends of the negative pressure hood where the knitted fabric enters and exits, and the barrier components separate the two ends of the negative pressure hood into independent isolation chambers. It should be noted that the lower edge of the barrier component is flush with the lower edge of the negative pressure hood to maintain a sealed connection with the knitted fabric passing through in synchronization with the lower edge of the negative pressure hood. Two second negative pressure tubes 207 are also arranged above the negative pressure hood, and the second negative pressure tubes extend to be connected to the first negative pressure tube. Due to the action of the second negative pressure tube, while the first negative pressure tube sucks the inside of the working chamber of the negative pressure hood, the gas in the isolation chamber is extracted by the second negative pressure tube, thereby isolating the working chamber of the negative pressure hood from the external environment. It should be noted that in order to prevent the condensed water condensed on the inner wall of the second negative pressure tube from dripping onto the knitted fabric, a second liquid storage tank 208 is also arranged on the inner wall of the isolation chamber. The suction tube of the suction pump enters the isolation chamber and extends into the second liquid storage tank 208 to promptly suck out the condensed water stored in the second liquid storage tank.

It should be noted that, in the above-mentioned embodiment, the barrier assembly 214 includes a barrier plate 211 vertically arranged in the negative pressure hood, which isolates the space at both ends of the negative pressure hood from the middle working chamber to form an isolation chamber. At the same time, in order to reduce the friction of the knitted fabric during movement, a first rotating shaft 212 is rotatably arranged below the barrier plate, and the lower edge of the first rotating shaft is flush with the lower edge of the negative pressure hood. At the same time, in order to ensure the sealing and prevent condensed water from condensing on the surface of the first rotating shaft, and at the same time improve the sealing between the first rotating shaft and the barrier plate, a first water wiping plate 213 is also connected to the lower end of the barrier plate. The first water wiping plate is made of a water-absorbing material and smoothly fits on the surface of the first rotating shaft to wipe the surface of the rotated first rotating shaft dry.

Similarly, in order to improve the sealing between the isolation chamber and the outside. A second rotating shaft 209 is rotatably provided at both ends of the inlet and outlet of the negative pressure cover, and the lower edge of the second rotating shaft is flush with the lower edge of the negative pressure cover. At the same time, a second water wiping board 210 is also provided at both ends of the inlet and outlet of the negative pressure cover. The second water wiping board is also made of absorbent material, such as cotton, sponge and other materials, and is smoothly fitted with the surface of the second rotating shaft, so as to reduce the resistance received by the knitted fabric during the transmission process while maintaining the sealing.

In order to further improve the sealing performance of the left and right sides of the negative pressure cover during pre-shrinking, a downwardly extending sealing plate 215 is symmetrically arranged on the left and right sides of the negative pressure cover. At the same time, a sealing groove 101 is respectively opened on the left and right sides of the workbench surface, and the sealing plate is sealed and inserted into the sealing groove during pre-shrinking.

It should also be noted that in order to prevent the sucked condensed water from flowing down to the workbench due to being sent out, a liquid storage barrel 206 is fixedly installed on the negative pressure cover 201, and the discharge pipe of the suction pump is connected to the liquid storage barrel.

Working principle: When pre-shrinkage is required, the lifting assembly drives the negative pressure hood to descend to form a channel with the workbench surface that is only for the knitted fabric to pass through in a sealed manner. At the same time, the sealing plates on the left and right sides of the negative pressure hood are inserted into the sealing grooves to achieve left and right sealing. After the above steps are completed, the steam delivery mechanism introduces hot steam into the negative pressure hood through the air holes on the workbench surface to heat and pre-shrink the knitted fabric passing through the negative pressure hood. During this period, the condensed water formed by the condensation of the hot steam entering the first negative pressure pipeline and the second negative pressure pipeline is collected in the corresponding first liquid storage tank and the second liquid storage tank, and is sucked out by the suction pump to prevent the condensed water from dripping onto the knitted fabric.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a knitted fabric preshrinking device which characterized in that: comprising

A work table (100);

a steam delivery mechanism (300) arranged below the workbench (100) for spraying hot steam to the knitted fabric passing through the surface of the workbench (100);

A steam recovery mechanism (200) which is covered above the workbench (100) and sucks the steam passing through the knitted fabric by negative pressure;

The steam recovery mechanism (200) comprises a negative pressure cover (201) covered on a workbench (100), a lifting component (202) is connected to the negative pressure cover (201) in a driving mode, so that a channel only for knitted fabric to pass through exists between the negative pressure cover (201) and a table top of the workbench (100), at least one first negative pressure pipe (203) is connected to the negative pressure cover (201), a first liquid storage tank (204) is arranged in the connecting end of the first negative pressure pipe (203) and the negative pressure cover (201), a suction pump (205) is further arranged on the negative pressure cover (201), and a liquid suction pipe of the suction pump (205) penetrates through the first negative pressure pipe (203) and then stretches into the first liquid storage tank (204).

2. A knitted fabric preshrinking device as claimed in claim 1, characterized in that: the utility model discloses a suction pump, including negative pressure cover (201), separation subassembly (214) are vertically provided with respectively at both ends of negative pressure cover (201) to separate independent isolation room respectively at negative pressure cover (201) both ends, the lower edge of separation subassembly (214) sets up along the parallel and level with negative pressure cover (201) down, and isolation room top is connected with a second negative pressure pipe (207), second negative pressure pipe (207) with first negative pressure pipe (203) are linked together, still encircle on the inner wall of isolation room and are equipped with second reservoir (208), and the pipette of suction pump (205) stretches into in second reservoir (208) after entering the isolation room.

3. A knitted fabric preshrinking device as claimed in claim 2, characterized in that: the liquid discharge pipe of the suction pump (205) is connected with a liquid storage barrel (206), and the liquid storage barrel (206) is fixedly arranged on the negative pressure cover (201).

4. A knitted fabric preshrinking device as claimed in claim 3, characterized in that: the separation assembly (214) comprises a vertical separation plate (211) arranged in the negative pressure cover (201), a first rotating shaft (212) is rotatably arranged below the separation plate (211), the lower edge of the first rotating shaft (212) is flush with the lower edge of the negative pressure cover (201), a first water wiping plate (213) is further arranged at the lower end of the separation plate (211), and the first water wiping plate (213) is attached to the surface of the first rotating shaft (212) in a smooth mode.

5. A knitted fabric preshrinking device as set forth in claim 4, wherein: the utility model discloses a negative pressure cover, including negative pressure cover (201), advance, ejection of compact both ends rotatable is provided with second pivot (209), the lower edge of second pivot (209) with the lower edge parallel and level of negative pressure cover (201), advance, ejection of compact both ends of negative pressure cover (201) still are provided with second water wiping board (210) respectively, second water wiping board (210) smooth laminating is in second pivot (209) surface.

6. A knitted fabric preshrinking device as set forth in claim 5, wherein: the left side and the right side of the negative pressure cover (201) are symmetrically provided with sealing plates (215) which extend downwards, and the workbench (100) is provided with sealing grooves (101) which can be used for sealing and inserting the sealing plates (215).