CN102021663A - Polyurethane deaeration device - Google Patents

Abstract

The invention discloses a polyurethane deaeration device, which comprises a conical internal cylinder, wherein the upper end of the internal cylinder is provided with a liquid inlet; the lower end of the liquid inlet is connected with a plurality of evenly distributed liquid distribution pipes by a cylindrical cavity; baffle tubes are arranged below the liquid distribution pipes; each baffle tube is formed by vertically connecting a plurality of round-table cavities, wherein each round-table cavity is provided with an upper opening and a lower opening; and the liquid distribution outlet of each liquid distribution pipe is opposite to the inner wall at the top of the baffle tube. The polyurethane deaeration device provided by the invention has the advantages of increasing the deaeration area of polyurethane basic solution, improving the effect of polyurethane deaeration, and ensuring good deaeration effects although a large amount of polyurethane basic solution is subject to deaeration continuously.

Description

Spandex defoaming device

technical field

The invention relates to spandex production equipment, in particular to a spandex defoaming device.

Background technique

At present, the general defoaming device for spandex production includes a cone-shaped inner cylinder with a liquid outlet at the lower end and a liquid inlet at the upper part. The lower end of the liquid inlet is connected with an annular flow device. The inner wall of the inner cylinder is vacuumed inside the cone-shaped inner cylinder. When in use, the spandex stock solution is sent from the liquid inlet to the annular splitter device. The spandex stock solution flows out from the outlet of the annular splitter device and flows down the inner wall of the cone-shaped inner barrel, thereby Carry out defoaming treatment, and the spandex stock solution after defoaming flows out from the liquid outlet.

However, since the spandex stock solution flows down directly along the inner wall of the cone-shaped inner cylinder for defoaming, the defoaming area through which the spandex stock solution flows is relatively small. The limited defoaming area will cause the bubbles in the spandex stock solution to not be completely removed, which will affect the fineness and strength of the spandex yarn.

Contents of the invention

The object of the present invention is to provide a spandex defoaming device with a large defoaming area, and improve the defoaming effect of the spandex defoaming device when a large amount of spandex is continuously degassed.

In order to achieve the above object, the present invention provides a spandex defoaming device, which includes a conical inner cylinder, a liquid inlet is installed at the upper end, and several evenly distributed liquid separators are connected to the lower end of the liquid inlet through a cylindrical cavity. A baffle tube is installed below the liquid distribution tube, and the baffle tube is composed of several round table cavities with upper and lower openings connected in the vertical direction. The outlet of each liquid distribution tube is connected with The position of the inner wall at the top of the baffle is corresponding.

In the spandex defoaming device of the present invention, there are six circular frustum cavities, and the wide bottom of each circular frustum cavity is fixed on the inner wall of the tapered inner cylinder.

In the spandex defoaming device of the present invention, a support plate is installed above the baffle, the bottom of the cylindrical cavity is located on the support plate, each of the liquid pipes is fixed on the support plate, and each A dispensing tube outlet protrudes from the support plate.

In the spandex defoaming device of the present invention, the outer wall of the tapered inner cylinder is provided with a matching heat preservation jacket.

In the spandex defoaming device of the present invention, several liquid pipes are connected through a cylindrical cavity at the lower end of the liquid inlet, and a baffle tube is installed below the liquid pipe, and the baffle tube is composed of several round table cavities with upper and lower openings. It is connected in the vertical direction. The outlet of each dispensing pipe corresponds to the position of the inner wall of the top of the baffle. When in use, the spandex stock solution is injected from the liquid inlet, and the spandex stock solution flows through the cylindrical cavity and the dispensing pipe in turn. to the baffle tube, and then repeatedly turn back along the baffle tube and then flow out, thereby increasing the defoaming area of the spandex stock solution and improving the effect of spandex degassing. Good defoaming effect.

Description of drawings

Fig. 1 is a front sectional view of the spandex defoaming device of the present invention.

Detailed ways

The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:

Referring to Fig. 1, the spandex defoaming device of the present embodiment comprises a conical inner cylinder 1, a liquid inlet 2 and a liquid outlet 7 are installed at its upper and lower ends respectively, and the lower end of the liquid inlet 2 is connected to the cylindrical cavity. The inlet of 3 is welded, the four evenly distributed outlets of the cylindrical cavity 3 are respectively welded with a liquid pipe 4, and a support plate fixed on the inner wall of the cone-shaped inner cylinder 1 is installed horizontally below the cylindrical cavity 3 8. The bottom of the cylindrical cavity 3 is located on the support plate 8, each liquid pipe 4 is fixed on the support plate 8, and the outlet 4a of each liquid pipe protrudes from the support plate 8, and a baffle is installed under the support plate 8 5. The baffle tube 5 is composed of six circular table cavities with upper and lower openings welded in the vertical direction. The wide bottom edge of each circular table cavity is welded and fixed on the inner wall of the tapered inner cylinder 1. Each liquid pipe The outlet 4a of the liquid pipe 4 corresponds to the position of the inner wall at the top of the baffle tube 5 . In order to increase the thermal insulation performance of the spandex defoaming device, a matching thermal insulation jacket 6 is laid on the outer wall of the conical inner cylinder 1 . When in use, the spandex stock solution is injected from the liquid inlet 2, and the spandex stock solution flows through the cylindrical cavity 3 and the liquid distribution tube 4 to the baffle tube 5 in turn, and then turns back along the baffle tube 5 repeatedly six times and then passes through the liquid outlet 7 flow out.

The above embodiment is only a description of the preferred implementation of the present invention, and is not intended to limit the scope of the present invention. On the premise of not departing from the design spirit of the present invention, ordinary engineers and technicians in the field can make various modifications to the technical solution of the present invention. and improvements, all should fall within the scope of protection determined by the claims of the present invention.

Claims (4)

1. A spandex defoaming device, comprising a conical inner cylinder (1), a liquid inlet (2) is installed on its upper end, it is characterized in that the lower end of the liquid inlet (2) passes through the cylindrical cavity (3) Several evenly distributed liquid pipes (4) are connected, and a baffle (5) is installed under the liquid pipe (4). The body is connected in the vertical direction, and the liquid distribution pipe outlet (4a) of each liquid distribution pipe (4) corresponds to the position of the inner wall of the top of the baffle (5). 2. spandex defoaming device according to claim 1, is characterized in that, there are six said conical truncated cavities, and the wide base of each said conical truncated cavity is fixed on the bottom of said tapered inner cylinder (1). on the inner wall. 3. The spandex defoaming device according to claim 2, characterized in that a support plate (8) is installed above the deflector (5), and the bottom of the cylindrical cavity (3) is located on the support plate (8), each of the liquid dispensing tubes (4) is fixed on the support plate (8), and each liquid dispensing tube outlet (4a) protrudes from the support plate (8). 4. The spandex defoaming device according to claim 3, characterized in that, the outer wall of the tapered inner cylinder (1) is provided with a matching heat preservation jacket (6).

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