Industrial yarn circular blowing spinning heat preservation device

Abstract

The utility model belongs to the technical field of polyester industrial yarn, and discloses an industrial yarn circular blowing spinning heat preservation device which is used for being placed above a circular blowing device after spinning is stopped so as to assist in temperature rise of an assembly spinneret plate. The circular blowing spinning heat preservation device comprises a heat preservation plate and a cylinder. A plurality of through holes are formed in the heat preservation plate, and the number of the through holes is the same as that of the assembly spinneret plates; the aperture of the through hole is greater than or equal to the diameter of the assembly spinneret plate; when the heat preservation plate is arranged above the annular blowing device, the vertical projection of the heat preservation plate on the plane where the upper surface of the annular blowing device is located is located in the upper surface of the annular blowing device, and the central axis of each through hole coincides with the central axis of one assembly spinneret plate. An opening of the cylinder faces upwards, and the cylinder is arranged below the heat preservation plate; the cylinder is fixedly connected with the insulation board; the number of the cylinders is the same as that of the through holes, and the cylinders are in one-to-one correspondence with the through holes; and the vertical projection of the cylinder opening on the insulation board covers the through hole. According to the utility model, the temperature of the assembly spinneret plate can be quickly raised, and the temperature raising time of the assembly spinneret plate is shortened.

Description

Technical Field

[0001] This utility model belongs to the field of polyester industrial yarn technology, and relates to an industrial yarn ring blow spinning heat preservation device. Background Technology

[0002] The production process of industrial yarn is as follows: polyester chips → screw extruder → metering pump → spinning assembly → cooling → oiling → stretching and setting → winding. The spinning assembly is a core device in the industrial yarn production process. Whether the high-temperature, high-pressure melt can flow evenly through the spinneret orifices in the spinning assembly is a crucial factor in determining the stability of industrial yarn production. Low-molecular-weight sublimates are generated during polyester industrial yarn production. Over time, these sublimates accumulate around the spinneret orifices, forming coke deposits. This damages the melt stream exiting the spinneret orifices, significantly impacting subsequent stretching and setting, and can even cause yarn breakage and fuzzing. Therefore, periodic shutdowns and cleaning of the spinneret in the spinning assembly are necessary to ensure normal production.

[0003] In industrial yarn spinning assemblies, the spinneret area is relatively large (generally larger than 150mm in diameter), and its temperature is mainly maintained by heat transfer from the spinning box and the high-temperature polyester melt flowing out of the spinneret orifices. During spinneret removal operations, for ease of operation, the metering pump needs to be shut off, and the spinneret exposed directly to the air. However, this easily causes the spinneret temperature to drop, resulting in poor yarn output when the metering pump is restarted, preventing immediate normal production. It is necessary to continuously run the pump to release the flow for a period of time, allowing the spinneret temperature to rise slowly. This release and heating process is often lengthy (generally 20-50 minutes), which also leads to significant polyester melt waste and reduced production efficiency.

[0004] Patent application CN201120403516.2 discloses a Barmag ring-blowing heat preservation device. This device adds a silicone plate to the air box. When spinning stops, the ring-blowing air box is raised to ensure the silicone plate is in close contact with the spinneret, maintaining the surface temperature of the spinneret and reducing the impact of room temperature on the spinneret. Patent application CN201620816819.X discloses a ring-blowing spinning stop spinneret heat preservation device. This device uses a movable plate to isolate the spinneret and the ring-blowing air into two spaces. This device can block the ring-blowing air from blowing onto the spinneret, slowing down the cooling of the spinneret. These two patents mainly aim to reduce the impact of room temperature and ring-blowing air on the spinneret temperature during stoppage, thus slowing down the cooling of the spinneret. However, in actual operation, after the spinneret is stopped and the spinneret temperature has already decreased, it is necessary to run the metering pump for a long time to raise the spinneret temperature back to the normal process temperature for normal production.

[0005] Therefore, it is of great significance to study an industrial yarn ring blowing and heat preservation device to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to solve the problems existing in the prior art and to provide an industrial yarn ring blowing spinning heat preservation device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An industrial yarn ring blow spinning heat preservation device is provided. The ring blow spinning heat preservation device is placed above the ring blow spinning device after spinning is stopped to assist in the heating of the spinneret of the component. The ring blow spinning heat preservation device includes a heat preservation plate and a cylinder.

[0009] The insulation board has multiple through holes, the number of which is the same as the number of spinnerets in the component; the diameter of the through holes is greater than or equal to the diameter of the spinnerets in the component; when the insulation board is placed above the ring blowing device, the vertical projection of the insulation board onto the plane of the upper surface of the ring blowing device is located inside the upper surface of the ring blowing device (including the case of complete overlap), and the central axis of each through hole coincides with the central axis of a spinneret in the component.

[0010] The opening of the cylinder faces upward and is positioned below the insulation board; the cylinder is fixedly connected to the insulation board; the number of cylinders is the same as the number of through holes, and the cylinders and through holes correspond one-to-one; the vertical projection of the cylinder opening onto the insulation board covers the through holes.

[0011] The device described in this application is placed above the ring blower after the spinning stop operation is completed. The ring blower is raised so that the insulation board and the spinning box are in close contact to prevent heat loss from the spinneret. At this time, the cylinder is located below the spinneret. The metering pump is turned on, and the cylinder receives the high-temperature melt. The heat is transferred by the high-temperature melt, which makes the spinneret heat up quickly. This effectively saves the time required to start the pump and release the heat for the spinneret. After using this insulation device, actual verification showed that normal production can be started within 5 minutes after the cleaning operation.

[0012] As a preferred technical solution:

[0013] As described above, in an industrial yarn ring blow spinning heat preservation device, when the heat preservation plate is placed above the ring blow device, the vertical projection of the heat preservation plate onto the plane containing the upper surface of the ring blow device coincides with the upper surface of the ring blow device.

[0014] In the industrial yarn ring blow spinning heat preservation device described above, when the heat preservation plate is placed above the ring blow device, the vertical projection of the cylinder is located inside the vertical projection of the ring blow filter element.

[0015] As described above, the industrial filament ring blow spinning heat preservation device has an inverted frustum-shaped cylinder, and the diameter of the large end of the inverted frustum-shaped cylinder is equal to the inner diameter of the ring blow filter element. At this time, the inverted frustum-shaped cylinder is inserted into the interior of the ring blow filter element, and the ring blow air can be prevented from blowing onto the spinneret of the component, thereby reducing the heat loss of the spinneret of the component.

[0016] As described above, the industrial yarn ring blowing and heat preservation device has a smooth inner surface of the inverted frustum-shaped cylinder, which facilitates the removal of the polyester melt after cooling.

[0017] As described above, in an industrial yarn ring blow spinning heat preservation device, when the heat preservation plate is placed above the ring blow spinning device, the heat preservation plate is in contact with the upper surface of the ring blow spinning device.

[0018] As described above, an industrial yarn ring blowing spinning heat preservation device has a layer of ceramic fiber on the upper surface of the heat preservation plate to improve heat preservation capacity and reduce heat loss.

[0019] As described above, the industrial wire ring blowing spinning heat preservation device uses an iron heat preservation board, which has high strength and can effectively prevent deformation.

[0020] Beneficial effects:

[0021] This invention, by tightly attaching the industrial yarn ring blowing spinning heat preservation device to the spinning box, can prevent heat loss from the component spinneret. At the same time, it can also utilize the temperature of the high-temperature melt inside the cylinder for heat transfer, enabling the component spinneret to heat up quickly, effectively saving the time required for the component spinneret to start pump discharge and heat up. Attached Figure Description

[0022] Figure 1 This is a front view of the insulation board in the industrial yarn ring blowing spinning insulation device of this utility model;

[0023] Figure 2 This is a top view of the insulation board in the industrial yarn ring blowing spinning insulation device of this utility model;

[0024] Figure 3 This is a schematic diagram illustrating the use of the industrial yarn ring blowing and heat preservation device of this utility model;

[0025] Figure 4 A schematic diagram showing a spinning box without the industrial yarn ring blowing spinning heat preservation device of this utility model;

[0026] Among them, 1-insulation board, 2-cylinder, 3-spinning box, 4-ring blow filter element, 5-ring blow lifting cylinder, 6-component spinneret. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0028] An industrial yarn ring blowing spinning heat preservation device, such as Figure 3 As shown, it is used to place above the ring blower after spinning is stopped to assist in heating the spinneret of the assembly;

[0029] like Figure 1 , Figure 2 As shown, the ring-blown spinning heat preservation device includes a heat preservation plate 1 and a cylinder 2;

[0030] Insulation board 1 is an iron insulation board with a layer of ceramic fiber on its upper surface;

[0031] The insulation board 1 has multiple through holes, the number of which is the same as the number of spinnerets in the component; the diameter of the through holes is greater than or equal to the diameter of the spinnerets in the component.

[0032] Cylinder 2 is an inverted frustum-shaped cylinder with a smooth inner surface, and the diameter of the large end of the inverted frustum-shaped cylinder is equal to the inner diameter of the annular filter element;

[0033] The opening of cylinder 2 faces upward, and cylinder 2 is set below insulation board 1; cylinder 2 is fixedly connected to insulation board 1; the number of cylinders 2 is the same as the number of through holes, and cylinders 2 correspond one-to-one with through holes; the vertical projection of the cylinder opening on insulation board 1 covers the through holes.

[0034] like Figure 3 As shown, when the insulation board 1 is placed above the ring blowing device, the insulation board 1 is in contact with the upper surface of the ring blowing device, the vertical projection of the insulation board 1 on the plane where the upper surface of the ring blowing device is located coincides with the upper surface of the ring blowing device, and the central axis of each through hole coincides with the central axis of a component spinneret 6.

[0035] When the insulation plate 1 is positioned above the ring blowing device, the vertical projection of the cylinder 2 is located inside the vertical projection of the ring blowing filter element.

[0036] The above-mentioned device is used as follows: when the industrial yarn stops spinning, the spinning box body... Figure 4 As shown, when production needs to resume after the spinning stop operation is completed, such as... Figure 3 As shown, first place the above-mentioned industrial yarn ring blow spinning heat preservation device above the ring blow device, so that the central axis of each through hole coincides with the central axis of a component spinneret 6. Then, start the ring blow lifting cylinder 5 to press the heat preservation plate 1 tightly against the spinning box 3. Then, turn on the metering pump to let the cylinder 2 receive the high-temperature melt. Use the temperature of the high-temperature melt to transfer heat and make the component spinneret 6 heat up quickly. When the component spinneret 6 reaches the production temperature, start the ring blow lifting cylinder 5 again to separate the heat preservation plate 1 from the spinning box 3. After removing the industrial yarn ring blow spinning heat preservation device, normal production of industrial yarn can begin.

Claims

1. An industrial yarn ring blowing spinning heat preservation device, characterized in that, The ring-blown spinning heat preservation device is placed above the ring-blown spinning device after spinning stops to assist the component spinneret in heating up; the ring-blown spinning heat preservation device includes a heat preservation plate (1) and a cylinder (2); The insulation board (1) is provided with multiple through holes, the number of which is the same as the number of spinnerets in the component; the diameter of the through holes is greater than or equal to the diameter of the spinnerets in the component; when the insulation board (1) is set above the ring blowing device, the vertical projection of the insulation board (1) on the plane of the upper surface of the ring blowing device is located inside the upper surface of the ring blowing device, and the central axis of each through hole coincides with the central axis of a spinneret in the component. The opening of the cylinder (2) faces upward and is set below the insulation board (1); the cylinder (2) is fixedly connected to the insulation board (1); the number of cylinders (2) is the same as the number of through holes, and the cylinders (2) correspond one-to-one with the through holes; the vertical projection of the cylinder opening on the insulation board (1) covers the through holes.

2. The industrial yarn ring blowing spinning heat preservation device according to claim 1, characterized in that, When the insulation board (1) is placed above the ring blowing device, the vertical projection of the insulation board (1) onto the plane of the upper surface of the ring blowing device coincides with the upper surface of the ring blowing device.

3. The industrial yarn ring blowing spinning heat preservation device according to claim 2, characterized in that, When the insulation plate (1) is placed above the ring blowing device, the vertical projection of the cylinder (2) is located inside the vertical projection of the ring blowing filter element.

4. The industrial yarn ring blowing spinning heat preservation device according to claim 3, characterized in that, The cylinder (2) is an inverted frustum-shaped cylinder, and the diameter of the large end of the inverted frustum-shaped cylinder is equal to the inner diameter of the ring blow filter element.

5. The industrial yarn ring blowing spinning heat preservation device according to claim 4, characterized in that, The inner surface of the inverted frustum-shaped cylinder is smooth.

6. The industrial yarn ring blowing spinning heat preservation device according to claim 3, characterized in that, When the insulation board (1) is placed above the ring blowing device, the insulation board (1) is attached to the upper surface of the ring blowing device.

7. The industrial yarn ring blowing spinning heat preservation device according to claim 1, characterized in that, The upper surface of the insulation board (1) is provided with a layer of ceramic fiber.

8. The industrial yarn ring blowing spinning heat preservation device according to claim 1, characterized in that, The insulation board (1) is an iron insulation board.

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