Shaping hot box for spinning and oil smoke extraction system

Abstract

The utility model belongs to the technical field of polyester filament yarn production, and relates to a shaping hot box for spinning and an oil fume extraction system, the shaping hot box for spinning comprises a box body, a pipe body and a cover plate, and a side plate of the box body is provided with a detection port; the pipe body is fixedly connected with the side plate, and the two ends of the pipe body are marked as a pipe opening a and a pipe opening b respectively. The pipe orifice a covers the detection opening; the plane where the pipe opening b is located is a non-vertical plane, the cover plate is rotationally connected with the highest point of the pipe opening b, a gap exists between the lowest point of the pipe opening b and the cover plate, and the pipe opening b is completely located in the rotating motion area of the cover plate. The oil smoke extraction system for spinning comprises n shaping hot boxes, the n shaping hot boxes are connected with the same main air pipe through sub air pipes respectively, and the main air pipe is connected with an exhaust fan. The device can reflect whether the suction force in each shaping hot box is sufficient or not in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyester filament production, and relates to a shaping hot box for spinning and a fume extraction system. Background Art

[0002] During the production of polyester industrial yarn, the surface oil of the polyester industrial yarn evaporates during high-temperature stretching, generating oil mist in the heat setting box. At this time, an oil fume extraction device is required to extract the oil mist. However, when the oil fume extraction device is blocked by foreign matter such as coke, the suction force inside the heat setting box is insufficient, and the oil mist cannot be extracted in time. When a large amount of oil mist accumulates in the heat setting box, it will produce oil droplets on the heat setting box wall. When the oil droplets fall on the yarn tow, it will cause oil contamination or even breakage of the yarn tow, affecting normal production.

[0003] Since multiple shaping hot boxes share one fume extraction system, the existing technology uses a centrifugal fan to connect the main air duct of the entire production line, and then connects the sub-air ducts of several spinning positions through the main air duct. Each spinning position is equipped with 5 shaping hot boxes, and each shaping hot box is connected to the sub-air duct of the spinning position through a separate flexible connecting pipe. Currently, only a negative pressure detection meter is installed on the main air duct, so only the negative pressure of the entire fume extraction system can be detected. There is no instrument dedicated to suction force detection in the shaping hot box, and it is impossible to know whether the suction force in each shaping hot box is sufficient. When the suction force in a shaping hot box is insufficient, it is impossible to confirm which specific shaping hot box has insufficient pressure.

[0004] Therefore, it is of great significance to provide a spinning heat setting box and a fume extraction system to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and provide a spinning heat setting box and a fume extraction system.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is as follows:

[0007] A spinning heat setting box comprises a box body, a tube body and a cover plate, wherein a detection port is provided on a side plate of the box body;

[0008] The pipe body is fixedly connected to the side plate, and the two ends of the pipe body are marked as pipe opening a and pipe opening b respectively;

[0009] The pipe opening a covers the detection opening;

[0010] The plane where the pipe mouth b is located is a non-vertical plane. The cover plate is rotationally connected to the highest point of the pipe mouth b. There is a gap between the lowest point of the pipe mouth b and the cover plate. The pipe mouth b is completely located within the rotational movement area of ​​the cover plate.

[0011] As the preferred technical solution:

[0012] The spinning heat setting box as described above has a tube body in the form of a trapezoidal frame and a tube opening b in the form of a rectangle.

[0013] The above-mentioned spinning setting hot box has a cover plate which is a rectangular plate.

[0014] In the spinning setting hot box as described above, the cover plate is rotatably connected to the highest point of the pipe opening b via a hinge, and the hinge is a hinge with adjustable tightness.

[0015] In the spinning setting hot box as described above, the side panel is a hot box door.

[0016] The utility model also provides a fume extraction system for spinning, comprising n sub-air ducts, a main air duct and an exhaust fan, characterized in that it also comprises n spinning setting hot boxes as described in any one of the above items, n≥2;

[0017] One end of n air ducts is connected to n shaping hot boxes one by one.

[0018] The other end of each sub-air duct is connected to the main air duct;

[0019] The main air duct is connected to the exhaust fan.

[0020] As the preferred technical solution:

[0021] In the above-mentioned oil fume extraction system for spinning, a negative pressure detection meter is provided on the main air duct.

[0022] Beneficial effects:

[0023] When the negative pressure gauge of the main air duct shows that the negative pressure is normal, that is, the fume extraction negative pressure system of the production line is operating normally, but the negative pressure of a certain fixed hot box is insufficient due to the blockage of the branch pipe, the utility model can timely know whether the suction in the hot box is sufficient by observing the state of the cover plate (whether it is drooping), and can timely confirm which hot box has insufficient suction, and then promptly clean up foreign matter such as coke in the corresponding sub-air duct to ensure normal production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model when the suction force inside the spinning setting hot box is insufficient;

[0025] Figure 2 This is a schematic diagram of the structure of the utility model when the internal suction force of the spinning setting hot box is sufficient;

[0026] Among them, 1-cover, 2-tube body, 3-hinge, 4-hot box door. DETAILED DESCRIPTION

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

[0028] A spinning heat box, such as Figure 1 As shown, it includes a box body, a tube body 2 and a cover plate 1, and a detection port is provided on the hot box door 4 of the box body;

[0029] The tube body 2 is a trapezoidal frame, which is fixedly connected to the hot box door 4. The two ends of the tube body 2 are respectively marked as the tube opening a and the tube opening b;

[0030] The pipe opening a covers the detection opening;

[0031] The pipe opening b is rectangular, and the plane where the pipe opening b is located is a non-vertical plane;

[0032] The cover plate 1 is a rectangular plate, which is rotatably connected to the highest point of the pipe mouth b through a hinge 3 with adjustable tightness. There is a gap between the lowest point of the pipe mouth b and the cover plate 1, and the pipe mouth b is completely located within the rotational movement area of ​​the cover plate 1.

[0033] A fume extraction system for spinning, comprising n sub-air ducts, a main air duct, an exhaust fan, and n of the above-mentioned spinning setting hot boxes, where n is greater than or equal to 2;

[0034] One end of n air ducts is connected to n shaping hot boxes one by one.

[0035] The other end of each sub-air duct is connected to the main air duct;

[0036] The main air duct is connected to the exhaust fan, and a negative pressure detection meter is provided on the main air duct.

[0037] The use of the above device: During the production of polyester industrial yarn, the oil mist in the hot box will be continuously sucked out through the air duct and the exhaust fan connected to it. Figure 2 As shown, if the suction force in the hot box is sufficient, the cover 1 will be adsorbed on the pipe mouth b, as shown in FIG. Figure 1 As shown, when there is a gap between the cover plate 1 and the lowest point of the pipe mouth b (drooping state), it indicates that the suction force in the shaping hot box is insufficient, that is, it can be judged that the sub-air duct of the shaping hot box is blocked by coking foreign matter. At this time, it is only necessary to clean the coking foreign matter in time to continue normal production.

Claims

1. A spinning heat box, comprising a box body, characterized in that: It also includes a tube body (2) and a cover plate (1), and a detection port is provided on the side plate of the box body; The tube body (2) is fixedly connected to the side plate, and the two ends of the tube body (2) are respectively marked as tube opening a and tube opening b; The pipe opening a covers the detection opening; The plane where the pipe opening b is located is a non-vertical plane, the cover plate (1) is rotatably connected to the highest point of the pipe opening b, a gap exists between the lowest point of the pipe opening b and the cover plate (1), and the pipe opening b is completely located within the rotational motion area of ​​the cover plate (1).

2. A spinning heat box according to claim 1, characterized in that: The tube body (2) is a trapezoidal frame, and the tube opening b is a rectangle.

3. A spinning heat box according to claim 2, characterized in that: The cover plate (1) is a rectangular plate.

4. A spinning heat box according to claim 1, characterized in that: The cover plate (1) is rotatably connected to the highest point of the pipe mouth b via a hinge (3), and the hinge (3) is a hinge with adjustable tightness.

5. A spinning heat box according to claim 1, characterized in that: The side plate is a hot box door (4).

6. A fume extraction system for spinning, comprising n sub-ducts, a main duct and an exhaust fan, characterized in that: It also includes n spinning heat boxes according to any one of claims 1 to 5, n ≥ 2; One end of n air ducts is connected to n shaping hot boxes one by one. The other end of each sub-air duct is connected to the main air duct; The main air duct is connected to the exhaust fan.

7. The oil fume extraction system for spinning according to claim 6, characterized in that: A negative pressure detection gauge is installed on the main air duct.

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