Carbon fiber precursor steam drafting silencer

Abstract

The utility model discloses a carbon fiber precursor steam drafting silencer, and belongs to the technical field of carbon fiber production equipment. Comprising a feeding pipe, the surface of the left end of the feeding pipe is sleeved with a hush pipe, a feeding inner cylinder is inserted into the right end of the hush pipe, a plurality of horn covers are arranged in the hush pipe, a top plate is integrally arranged on the right side of each horn cover, and the surfaces of the rear ends of the horn covers and the surfaces of the top plates are attached to the inner wall of the feeding pipe; according to the utility model, the plurality of horn covers are arranged in the feeding pipe, and the horn covers are provided with small openings of the feeding holes and large openings of the discharging holes at the rear ends, so that high-pressure steam at the front end can be well and preliminarily slowed down; and the high-pressure steam is further emitted to a silencing cavity formed by the outer side and the inner wall of the feeding pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon fiber production equipment, and in particular relates to a carbon fiber precursor steam drawing and silencing device. Background Art

[0002] In the production of high-quality, high-performance carbon fiber precursor, the quality of the precursor determines the quality of the carbon fiber. During the steam drawing process in existing tubular drafting boxes, due to their inherent structural limitations, steam entering the drafting tube and being ejected from both ends generates a high noise level exceeding 100dB, seriously affecting the hearing of operators in this process. Although certain noise reduction measures have been implemented in existing technologies, the noise level still remains high.

[0003] In view of the above problems, a device with better noise reduction effect is needed to reduce the noise generated and benefit the health of on-site personnel. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a carbon fiber precursor steam drawing silencer.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: a carbon fiber precursor steam drawing silencer device, comprising a feed pipe, a silencer pipe is sleeved on the left end surface of the feed pipe, a feed inner cylinder is inserted in the right end of the silencer pipe, a plurality of horn covers are arranged inside the silencer pipe, a top plate is integrally provided on the right side of each horn cover, the rear end surface of the horn cover and the surface of the top plate are both in contact with the inner wall of the feed pipe, a silencer cavity is formed in the feed pipe between the rear end of the horn cover and the top plate, a feed hole is provided at the center of the top plate at the right end of the horn cover, and the horn cover A discharge hole is formed at the left end, and the discharge hole of the horn cover is fitted corresponding to the end surface of the top plate of the rear horn cover. A plurality of silencer holes are opened on the middle surface of the horn cover, and a drainage sleeve is provided on the left end surface of the silencer pipe. The left end of the drainage sleeve and the right end of the silencer pipe are provided with a cover plate. The cover plate at the end of the silencer pipe is plugged into the silencer pipe, and a raw silk discharge pipe is plugged into the cover plate at the end of the drainage sleeve. One end of the raw silk discharge pipe passes through the inside of the drainage sleeve, and the other end of the raw silk discharge pipe passes through the cover plate and extends to the left end of the cover plate. An exhaust pipe is plugged into the top of the drainage sleeve.

[0006] Preferably, a locking nut is sleeved on the surface of the silencer pipe, the right end of the raw silk discharge pipe is inserted into the locking nut, and a cone sleeve is provided at the inner end of the insertion point.

[0007] Preferably, a plurality of partitions are sleeved on the surface of the feed pipe inside the muffler, and a plurality of through holes are opened on the outer circle of the surface of each partition. An auxiliary cavity is formed inside the muffler between two adjacent partitions, and the plurality of auxiliary cavities are connected to each other through the through holes.

[0008] Preferably, the outer surface of the feed pipe is provided with a plurality of through holes running through the feed pipe from top to bottom, and the through holes are arranged corresponding to the auxiliary cavity.

[0009] The utility model has the beneficial effects: by arranging multiple trumpet covers inside the feed pipe, the trumpet covers have a small opening of the feed port and a large opening of the rear end discharge port, so that the front end high-pressure steam can be preliminarily slowed down, and at the same time, with the multiple silencer holes opened on the middle surface of each trumpet cover, the high-pressure steam is further emitted to the outside and the silencer cavity formed by the inner wall of the feed pipe, and then sent to the auxiliary cavity through the through holes on the surface of the feed pipe again, so as to further reduce the sound generated by the circulation of high-pressure steam, and finally the steam is sent forward to the drainage sleeve again through the through holes on the internal partition of the silencer pipe, thereby changing the size of the space in the cavity and thereby weakening the sound at different frequencies. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0011] Figure 2 This is a schematic diagram of a sectional three-dimensional structure of the utility model;

[0012] Figure 3 It is a schematic cross-sectional structural diagram of the present utility model.

[0013] In the figure: 1. Feed pipe; 11. Feed inner cylinder; 12. Feed hole; 13. Partition; 131. Through hole; 132. Auxiliary chamber; 2. Silencer pipe; 3. Locking nut; 31. Cone sleeve; 4. Drain sleeve; 41. Exhaust pipe; 42. Cover plate; 43. Raw silk discharge pipe; 5. Speaker cover; 51. Top plate; 52. Silencer hole; 53. Feed hole; 54. Discharge hole; 55. Silencer chamber. DETAILED DESCRIPTION

[0014] The technical solution of the present invention will be further specifically described below with reference to the embodiments and the accompanying drawings.

[0015] Example: A carbon fiber precursor steam drawing silencer, such as Figure 1-Figure 3As shown, it includes a feed pipe 1, a silencer pipe 2 is sleeved on the left end surface of the feed pipe 1, a feed inner cylinder 11 is inserted in the right end of the silencer pipe 2, and a plurality of speaker covers 5 are provided inside the silencer pipe 2. A top plate 51 is integrally provided on the right side of each speaker cover 5. The rear end surface of the speaker cover 5 and the surface of the top plate 51 are both fitted with the inner wall of the feed pipe 1, and a silencer cavity 55 is formed in the feed pipe 1 between the rear end of the speaker cover 5 and the top plate 51. A feed hole 53 is provided at the center of the top plate 51 at the right end of the speaker cover 5, and a discharge hole 54 is formed at the left end of the speaker cover 5. The discharge hole 54 of the speaker cover 5 is fitted corresponding to the end face of the top plate 51 of the latter speaker cover 5, and the middle section of the speaker cover 5 A plurality of silencer holes 52 are provided on the surface, and the opening of the silencer holes 52 makes the internal cavity of the speaker cover 5 and the silencer cavity 55 communicate with each other. A drain sleeve 4 is provided on the left end surface of the silencer pipe 2, and a cover plate 42 is provided on the left end of the drain sleeve 4 and the right end of the silencer pipe 2. The cover plate 42 at the end of the silencer pipe 2 is plugged into the silencer pipe 2, and a raw silk discharge pipe 43 is plugged into the cover plate 42 at the end of the drain sleeve 4. A shaft retaining spring is provided at the connection between the raw silk discharge pipe 43 and the cover plate 42. One end of the raw silk discharge pipe 43 passes through the inside of the drain sleeve 4, and the other end of the raw silk discharge pipe 43 passes through the cover plate 42 and extends to the left end of the cover plate 42. An exhaust pipe 41 is plugged into the top of the drain sleeve 4.

[0016] A locking nut 3 is sleeved on the surface of the silencer pipe 2, the right end of the raw silk discharge pipe 43 is inserted into the locking nut 3, and a cone sleeve 31 is provided at the inner end of the insertion point. The raw silk discharge pipe 43 increases the tightness of the connection with the locking nut 3 through the cone barrel.

[0017] The surface of the feed pipe 1 located inside the silencer 2 is sleeved with multiple partitions 13, and the outer circle of the surface of each partition 13 is provided with multiple through holes 131. An auxiliary cavity 132 is formed inside the silencer 2 between two adjacent partitions 13, and the multiple auxiliary cavities 132 are interconnected through the through holes 131. The partition 13 sleeved on the left end of the silencer 2 cooperates with the cover plate 42 on the right end to achieve sealing at both ends of the silencer 2. At the same time, the end of the speaker cover 5 located at the leftmost end inside the silencer 2 is fitted with the partition 13. The outer surface of the feed pipe 1 is provided with multiple through holes 12 that pass through it up and down, and the through holes 12 are arranged corresponding to the auxiliary cavities 132.

[0018] The principle of the present invention is as follows: the carbon fiber precursor bundle with steam enters from the right end of the feed pipe 1, passes through the feed inner cylinder 11, and is then aligned with the feed port on the first horn cover 5 and sent to the feed port of the next horn cover 5, and then passes through multiple horn covers 5 at a time and is sent to the precursor discharge pipe 43 through the last partition 13, so that the carbon fiber precursor bundle is discharged. When the steam enters the interior of the first horn cover 5, the steam is sent to the interior of the horn cover 5 through the small mouth of the feed port, so that the cavity becomes larger and the noise is reduced first. Then part of the steam enters the interior of the second horn cover 5 backward, and the other part of the steam is discharged into the silencer cavity 55 through the multiple silencer holes 52 opened on the surface of the horn cover 5, and then is discharged outwardly to the auxiliary cavity 132 through the through hole 12 again, and then the steam there is discharged to the left into the drainage sleeve 4 through the through hole 131 on the partition 13, and then the steam is discharged through the exhaust pipe 41.

[0019] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A carbon fiber precursor steam drawing silencer, comprising a feed pipe (1), characterized in that: The left end surface of the feed pipe (1) is sleeved with a silencer pipe (2), and the right end of the silencer pipe (2) is inserted with a feed inner cylinder (11). A plurality of horn covers (5) are provided inside the silencer pipe (2), and a top plate (51) is provided integrally on the right side of each horn cover (5). The rear end surface of the horn cover (5) and the surface of the top plate (51) are both in contact with the inner wall of the feed pipe (1), and a silencer cavity (55) is formed in the feed pipe (1) between the rear end of the horn cover (5) and the top plate (51). A feed hole (53) is provided at the center of the top plate (51) at the right end of the horn cover (5), and a discharge hole (54) is formed at the left end of the horn cover (5), and the discharge hole (54) of the horn cover (5) corresponds to the rear end of the horn cover (5). The top plate (51) of the cover (5) is fitted with an end surface, a plurality of silencer holes (52) are opened on the middle surface of the speaker cover (5), a drainage sleeve (4) is provided on the left end surface of the silencer pipe (2), the left end of the drainage sleeve (4) and the right end of the silencer pipe (2) are both provided with a cover plate (42), the cover plate (42) at the end of the silencer pipe (2) is plugged into the silencer pipe (2), a raw silk discharge pipe (43) is plugged into the cover plate (42) at the end of the drainage sleeve (4), one end of the raw silk discharge pipe (43) passes through the interior of the drainage sleeve (4), and the other end of the raw silk discharge pipe (43) passes through the cover plate (42) and extends to the left end of the cover plate (42), and an exhaust pipe (41) is plugged into the top of the drainage sleeve (4).

2. The carbon fiber precursor steam drawing silencer according to claim 1, characterized in that: The surface of the muffler pipe (2) is sleeved with a locking nut (3), the right end of the raw silk discharge pipe (43) is inserted into the locking nut (3), and a cone sleeve (31) is provided at the inner end of the insertion point.

3. The carbon fiber precursor steam drawing silencer according to claim 1, characterized in that: The surface of the feed pipe (1) located inside the muffler pipe (2) is sleeved with a plurality of partitions (13), and the outer circle of the surface of each partition (13) is provided with a plurality of through holes (131). An auxiliary cavity (132) is formed inside the muffler pipe (2) between two adjacent partitions (13), and the plurality of auxiliary cavities (132) are interconnected through the through holes (131).

4. The carbon fiber precursor steam drawing silencing device according to claim 3, characterized in that: The outer surface of the feed pipe (1) is provided with a plurality of through holes (12) running through it from top to bottom, and the through holes (12) are arranged corresponding to the auxiliary cavity (132).

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