Annular blowing air knife for wiredrawing

Abstract

The invention belongs to the technical field of air knives, and particularly relates to a wiredrawing annular blowing air knife which comprises an air inlet pipe, a shell and a cover body, one end of the air inlet pipe is connected with a fan, the other end of the air inlet pipe is installed on the shell, a wire inlet hole penetrates through the middle of the cover body, a wire penetrating part is arranged in the shell, and a gas compression cavity communicated with the air inlet pipe is formed between the wire penetrating part and the inner wall of the shell. The threading part comprises a connecting piece, a first threading part and a second threading part, the first threading part and the second threading part are coaxially arranged, the end part of one end of the first threading part protrudes, the end part of one end of the second threading part is sunken, a gap exists between the protrusion and the sunken part to form an air passing channel, and a mounting hole and a first threading hole which are communicated are sequentially formed in the first threading part; and a second threading hole penetrates through the second threading part. The fan replaces an air compressor to reduce power consumption, gas is pressurized and then purges the surface of the steel wire through the gas channel, and the angle and the gap of the gas channel are set to ensure the purging effect and effectively avoid the problem of crystallization on the surface of the steel wire.

Description

Technical Field

[0001] The invention belongs to the technical field of air knives, and specifically designs a wire drawing annular blowing air knife. Background Art

[0002] In the steel wire production process, the drawn steel wire needs to be washed with high-pressure water. After the high-pressure water washing, the liquid on the surface of the steel wire needs to be removed. On the one hand, this can prevent the crystallization of borax remaining on the surface of the steel wire during the drawing process, and on the other hand, it can facilitate the subsequent production steps. Currently, the steel wire surface is mostly blown by an air compressor in conjunction with an air nozzle to remove the liquid on the surface of the steel wire. On the one hand, the air nozzle blowing cannot guarantee uniform and effective blowing of the steel wire surface, resulting in poor blowing effect, and the liquid on the steel wire surface cannot be effectively removed, resulting in crystallization on the steel wire surface. On the other hand, the air compressor consumes more electricity and wastes energy. Summary of the invention

[0003] In order to solve the problem that the existing method of using an air compressor in conjunction with an air nozzle to blow out the liquid on the surface of the steel wire has poor blowing effect and high power consumption, the present invention provides a wire drawing annular blowing air knife. The air compressor is replaced by a fan to reduce power consumption. The gas is pressurized in the gas compression chamber and then blown out through the air channel to blow the surface of the steel wire. The blowing effect is guaranteed by setting the angle and gap of the air channel, and the crystallization problem on the surface of the steel wire is effectively avoided.

[0004] In order to achieve the above object, the technical solution of the present invention is: A wire drawing annular blowing air knife comprises an air inlet pipe, a shell and a cover body, one end of the air inlet pipe is connected to the fan, and the other end is installed on the shell, the shell inlet end is fixedly provided with a cover body, the middle part of the cover body is penetrated with a wire inlet hole, the shell is coaxially penetrated with a threading portion, a gas compression chamber is formed between the threading portion and the inner wall of the shell, the air inlet pipe is connected with the gas compression chamber, the threading portion comprises a connecting piece and a first threading portion and a second threading portion which are coaxially arranged, one end of the first threading portion is convex, and one end of the second threading portion is concave, the convexity and the concave match each other and there is a gap between the two, the gap between the convex end of the first threading portion and the concave end of the second threading portion constitutes an air passage, the first threading portion and the second threading portion are fixedly connected by a connecting piece, the other end of the first threading portion opposite to the convex end is connected to the cover body, and the other end of the second threading portion opposite to the concave end passes through the outlet end of the shell, and the blowing angle of the steel wire is ensured by setting the air passage to prevent crystallization.

[0005] Preferably, a connected mounting hole and a first threading hole are sequentially opened in the first threading portion, the mounting hole and the wire entry hole are connected to each other, the end of the first threading hole away from the wire entry hole is a raised end of the first threading portion, and the end face of the raised end of the first threading portion is an annular inclined surface with a longer inner side and a shorter outer side, and the steel wire passes through the mounting hole and the first threading hole sequentially.

[0006] Preferably, the second threading portion is penetrated by a second threading hole.

[0007] Preferably, the diameter of the mounting hole is larger than the first wire threading hole, the wire entry hole, the first wire threading hole and the second wire threading hole have the same diameter, the wire entry hole, the mounting hole, the first wire threading hole and the second wire threading hole are coaxially connected to each other in sequence, and the steel wire passes through the wire entry hole, the mounting hole, the first wire threading hole and the second wire threading hole in sequence.

[0008] Preferably, the connecting member is a U-shaped plate and is provided in plurality, wherein the two ends of the U-shaped plate are respectively fixedly connected to the side walls of the first threading portion and the second threading portion, and the plurality of connecting members are arranged in a circumferential array along the air passage, and the connecting members are used to ensure that the first threading portion and the second threading portion are coaxially corresponding.

[0009] Preferably, a wear-resistant nozzle is coaxially arranged in the mounting hole, and the wear-resistant nozzle ensures that the steel wire is in the axial position of the threading part.

[0010] Preferably, a plurality of mounting plates are fixedly provided on the outer side of the outlet end of the shell, and through-holes are provided on the mounting plates, and the purge air knife of the present invention is fixed and installed through the mounting plates and the through-holes.

[0011] Preferably, the end of the second threading hole away from the first threading part is configured to be conical to form a threading outlet, with the small end of the threading outlet facing inward and the large end facing outward, so as to avoid contact and wear between the steel wire and the second threading part when passing through the wind knife.

[0012] Preferably, the distance between the two side walls of the air passage is 1.5 mm.

[0013] Preferably, the gas in the gas compression chamber is blown toward the second threading hole along the inclined surface of the raised end of the first threading portion to form an air outlet direction of the air passage, and the angle α between the air outlet direction of the air passage and the axis of the second threading hole is 30°.

[0014] Through the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, since the inclined surface of the protruding end of the first threading portion can guide the gas in the gas compression chamber to blow toward the second threading hole through the air channel, a conical purge airflow is generated through the air channel, thereby achieving all-round cleaning of the surface of the steel wire and effectively removing liquid and impurities on the surface of the steel wire.

[0015] 2. The present invention sets a gap distance in the air channel so that the gas is blown out through the air channel after the gas compression chamber is pressurized, thereby achieving efficient blowing of the steel wire surface. The pressurized gas has obvious blowing effect, further improving the effect of removing liquid and impurities on the steel wire surface.

[0016] 3. The present invention ensures the removal effect of liquid on the surface of the steel wire by setting the conical inclination angle of the air passage (i.e. the angle α between the air outlet direction of the air passage and the axis of the second threading hole), thereby effectively avoiding residue on the surface of the steel wire and avoiding borax crystallization.

[0017] 4. The present invention effectively ensures that the steel wire is located at the axial position of the first threading hole and the second threading hole when passing through the wind knife by installing a wear-resistant nozzle in the installation hole, thereby ensuring the blowing effect and avoiding the contact between the steel wire and the first threading part and the second threading part causing wear of the threading part.

[0018] 5. The annular purge air knife of the present invention can be used in conjunction with a blower to achieve a better purge effect than the current use of an air compressor in conjunction with an air nozzle, and effectively reduce the power consumption of the purge work, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0020] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0021] Figure 3 The structure of the present invention is schematically shown Figure 3 .

[0022] Figure 4 This is an exploded view of the cover body of the present invention after being disassembled.

[0023] The numbers in the accompanying drawings are: 1 is an air inlet pipe, 2 is a shell, 3 is a cover, 4 is a wire inlet hole, 5 is a gas compression chamber, 6 is a connecting piece, 7 is a first wire threading part, 8 is a second wire threading part, 9 is an air passage, 10 is a mounting hole, 11 is a first wire threading hole, 12 is a second wire threading hole, 13 is a mounting plate, 14 is a through hole, 15 is a wire threading outlet, and 16 is a wear-resistant nozzle. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1 to Figure 4As shown, this embodiment provides a drawing annular purge air knife, including an air inlet pipe 1, a shell 2 and a cover body 3. One end of the air inlet pipe 1 is connected to the fan, and the other end is installed on the shell 2. The shell 2 is fixedly provided with a cover body 3 at the inlet end. A wire inlet hole 4 is penetrated in the middle of the cover body 3. The steel wire enters the air knife from the wire inlet hole 4. A threading part is coaxially penetrated in the shell 2. A gas compression chamber 5 is formed between the threading part and the inner wall of the shell 2. The air inlet pipe 1 is connected to the gas compression chamber 5. The gas entering the air inlet pipe 1 is pressurized by the gas compression chamber 5 to ensure the purge pressure. The threading part includes a connection Part 6 and a first threading portion 7 and a second threading portion 8 are coaxially arranged, one end of the first threading portion 7 is convex and one end of the second threading portion 8 is concave, the convexity matches the concave and there is a gap between the two, the gap between the convex end of the first threading portion 7 and the concave end of the second threading portion 8 constitutes an air passage 9, the gas in the gas compression chamber 5 is pressurized and blown out through the air passage 9 to purge the steel wire and remove the liquid on the surface of the steel wire, the other end of the first threading portion 7 opposite to the convex end is connected to the cover body 3, and the other end of the second threading portion 8 opposite to the concave end passes through the outlet end of the shell 2.

[0025] The first threading portion 7 and the second threading portion 8 are fixedly connected by a connecting piece 6. The connecting piece 6 is a U-shaped plate and is provided in plurality. Both ends of the U-shaped plate are respectively fixedly connected to the side walls of the first threading portion 7 and the second threading portion 8. The plurality of connecting pieces 6 are arranged in a circumferential array along the air passage 9. On the one hand, the connecting piece 6 will not affect the air intake of the air passage 9. On the other hand, the coaxial fixed connection between the first threading portion 7 and the second threading portion 8 is ensured.

[0026] The first threading portion 7 is provided with a connecting mounting hole 10 and a first threading hole 11 in sequence, the mounting hole 10 and the wire entry hole 4 are connected to each other, the end of the first threading hole 11 away from the wire entry hole 4 is a raised end of the first threading portion 7, and the end face of the raised end of the first threading portion 7 is an annular inclined surface with a longer inner side and a shorter outer side, a wear-resistant nozzle 16 is coaxially arranged in the mounting hole 10, the wear-resistant nozzle 16 is made of cemented carbide YG8, the inner diameter of the wear-resistant nozzle 16 is slightly larger than the diameter of the steel wire, but smaller than the diameter of the first threading hole 11, and the wear-resistant nozzle 16 is used to ensure that the steel wire passes through the first threading hole 10 Close to or located on the axis of the first threading hole 10 to avoid contact with the first threading part 7 and causing wear of the first threading part 7, the second threading part 8 is penetrated by the second threading hole 12, the diameter of the mounting hole 10 is larger than the first threading hole 11, the wear-resistant mouth 16 is limited, and cooperates with the cover body 3 to avoid axial movement of the wear-resistant mouth 16, the inner diameter of the wear-resistant mouth 16 is smaller than the inner diameter of the first threading hole 11, the wire entry hole 4, the first threading hole 11 and the second threading hole 12 have the same diameter, the wire entry hole 4, the mounting hole 10, the first threading hole 11 and the second threading hole 12 are coaxially connected to each other in sequence.

[0027] As an implementable embodiment, when the diameter of the steel wire is 6.5-8 mm, the inner diameter of the wear-resistant nozzle 16 is 10 mm.

[0028] The cover body 3 is fixedly connected to the end of the inlet terminal of the housing 2 by means of bolts to ensure the installation limit of the wear-resistant nozzle 16.

[0029] A plurality of mounting plates 13 are fixedly disposed on the outer side of the outlet end of the housing 2 , and a through hole 14 is opened on the mounting plate 13 , and the air knife of the present invention is fixed and installed through the mounting plate 13 and the through hole 14 .

[0030] The end of the second threading hole 12 away from the first threading portion 7 is set to be conical to form a threading outlet 15, and the small end of the threading outlet 15 faces inward and the large end faces outward, which effectively prevents the steel wire from contacting the inner wall of the second threading portion 8 when passing through the wind knife.

[0031] The spacing between the two side walls of the air passage 9 is 1.5 mm. The gas in the gas compression chamber 5 is blown toward the second threading hole 12 along the inclined surface of the raised end of the first threading portion 7 to form the air outlet direction of the air passage 9. The angle α between the air outlet direction of the air passage 9 and the axis of the second threading hole 12 is 30°.

[0032] After testing, the present invention found that when the gap distance of the air passage 9 is 2 mm and the angle between the air outlet direction and the axis of the second threading hole 12 is 60° or 45°, the liquid purging effect on the surface of the steel wire is poor, and borax crystallizes under the action of the residual liquid; when the gap distance of the air passage 9 is 1.5 mm and the angle between the air outlet direction and the axis of the second threading hole 12 is 30°, the residual liquid on the surface of the steel wire is basically purged and cleared, and there is no crystallization phenomenon.

[0033] When in use, the steel wire passes through the wire inlet hole 4, the wear-resistant nozzle 16, the first wire inlet hole 11, the second wire inlet hole 12 and the threading outlet 15 in turn. During this process, the fan continuously transports the gas from the air inlet pipe 1 to the gas compression chamber 5, and blows it to the surface of the steel wire in the second threading hole 12 through the air passage 9. The gap of the air passage 9 is set to 1.5 mm, so that the gas is pressurized and blown to the surface of the steel wire, and the gas is blown to the surface of the steel wire in a cone shape, so as to achieve comprehensive and efficient purging of the residual liquid on the surface of the steel wire. At the same time, the air outlet direction is limited by the air passage 9 to ensure the purging effect, effectively ensure the dryness of the steel wire surface, and avoid the problem of borax crystallization.

[0034] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A wire drawing annular purge air knife, characterized in that: The invention comprises an air inlet pipe (1), a shell (2) and a cover body (3), wherein one end of the air inlet pipe (1) is connected to a fan and the other end is mounted on the shell (2); the cover body (3) is fixedly provided at the inlet end of the shell (2); a wire inlet hole (4) is penetrated through the middle of the cover body (3); a wire threading portion is coaxially penetrated through the inside of the shell (2); a gas compression chamber (5) is formed between the wire threading portion and the inner wall of the shell (2); the air inlet pipe (1) is connected to the gas compression chamber (5); the wire threading portion comprises a connecting piece (6) and a first wire threading portion (7) and a second wire threading portion (8) coaxially arranged. The first threading portion (7) has a protruding end and a recessed end, the protruding end matches the recessed end and a gap exists between the two ends, the gap between the protruding end of the first threading portion (7) and the recessed end of the second threading portion (8) forms an air passage (9), the first threading portion (7) and the second threading portion (8) are fixedly connected via a connecting member (6), the other end of the first threading portion (7) opposite to the protruding end is connected to the cover body (3), and the other end of the second threading portion (8) opposite to the recessed end passes through the outlet end of the shell (2).

2. The wire drawing annular purge air knife according to claim 1, characterized in that: The first threading portion (7) is provided with a mounting hole (10) and a first threading hole (11) which are connected in sequence. The mounting hole (10) and the wire entry hole (4) are connected to each other. The end of the first threading hole (11) away from the wire entry hole (4) is a protruding end of the first threading portion (7). The end surface of the protruding end of the first threading portion (7) is an annular inclined surface which is longer inside and shorter outside.

3. The wire drawing annular blowing air knife according to claim 1, characterized in that: The second threading portion (8) is penetrated by a second threading hole (12).

4. The wire drawing annular purge air knife according to claim 1, characterized in that: The diameter of the mounting hole (10) is larger than that of the first threading hole (11); the diameters of the wire entry hole (4), the first threading hole (11) and the second threading hole (12) are the same; the wire entry hole (4), the mounting hole (10), the first threading hole (11) and the second threading hole (12) are coaxially connected to each other in sequence.

5. The wire drawing annular purge air knife according to claim 1, characterized in that: The connecting member (6) is a U-shaped plate body and is provided in plurality. The two ends of the U-shaped plate body are respectively fixedly connected to the side walls of the first threading portion (7) and the second threading portion (8). The plurality of connecting members (6) are arranged in a circumferential array along the air passage (9).

6. The wire drawing annular blowing air knife according to claim 1, characterized in that: A wear-resistant nozzle (16) is coaxially arranged in the mounting hole (10).

7. The wire drawing annular blowing air knife according to claim 1, characterized in that: A plurality of mounting plates (13) are fixedly arranged on the outer side of the outlet end of the housing (2), and a through hole (14) is formed on the mounting plate (13).

8. The wire drawing annular purge air knife according to claim 1, characterized in that: One end of the second threading hole (12) away from the first threading portion (7) is configured to be conical to form a threading outlet (15), with the small end of the threading outlet (15) facing inwards and the large end facing outwards.

9. The wire drawing annular blowing air knife according to claim 6, characterized in that: The distance between the two side walls of the air passage (9) is 1.5 mm.

10. The wire drawing annular blowing air knife according to claim 1, characterized in that: The gas in the gas compression chamber (5) is blown toward the second threading hole (12) along the inclined surface of the raised end of the first threading portion (7), forming an air outlet direction of the air passage (9), and the angle α between the air outlet direction of the air passage (9) and the axis of the second threading hole (12) is 30°.

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