CN218454216U - Galvanized pipe inside and outside purging device - Google Patents

Abstract

The utility model discloses a galvanized pipe inside and outside purging device, which comprises a frame, an inside blowing mechanism, a clamping mechanism, an air supply mechanism, an outside blowing mechanism and a feeding mechanism, wherein the inside blowing mechanism comprises an inside blowing pipe, an air inlet and an inside blowing head; the number of the clamping mechanisms is three, and the three clamping mechanisms are respectively positioned at the front part, the middle part and the rear part of the inner blowpipe; the clamping mechanism comprises a bidirectional screw, an upper nut pair, an upper clamping block, a lower nut pair and a lower clamping block, and the external blowing mechanism comprises an external blowing head and an external blowing pipe. Carry galvanized pipe through carrying the sheave to pass interior blowpipe and outer blowing head, blowpipe in the three fixture cooperation centre gripping, the in-process that makes galvanized pipe pass interior blowpipe, blowpipe in the centre gripping all the time, the position of blowpipe in keeping, evenly blow away the unnecessary zinc liquid of galvanized pipe internal surface through a plurality of interior blowing heads, evenly blow away the unnecessary zinc liquid of galvanized pipe surface through a plurality of outer blowing heads, accomplish to the galvanized pipe inside and outside wall and cover comprehensively, evenly blow and sweep, the effect of sweeping is improved, control galvanized pipe thickness effectively, the quality of galvanized pipe is improved.

Description

Galvanized pipe inside and outside purging device

Technical Field

The utility model relates to a galvanized pipe processing technology field, especially a device sweeps inside and outside galvanized pipe.

Background

The process flow of the hot-dip galvanized pipe comprises the following steps: black tubes, alkali washing, water washing, acid washing, clear water rinsing, assistant soaking, drying, hot dip galvanizing, external blowing, internal blowing, air cooling, water cooling, passivation, water rinsing, inspection, weighing and warehousing. After the hot-dip galvanizing process is finished, the pipe needs to be blown outwards and inwards, so that redundant zinc liquid on the inner wall and the outer wall of the galvanized pipe is blown away, and a smooth surface is obtained.

The patent with publication number CN207699654U discloses a purging device for a galvanized pipe, which comprises a purging table, a front short leg and a rear long leg, wherein a transverse air passage is fixedly installed on the edge of the rear end of the purging table, air blowing pipes are installed on two sides of the transverse air passage, a plurality of outer blowing holes are formed in the vertical surface of one side of the purging table of the transverse air passage at intervals, an inner blowing pipe is welded at the center of each outer blowing hole, a baffle is hinged on the left side of the purging table, left and right side beams of the purging table extend forwards out of the table surface of the purging table and then bend upwards, a front supporting beam is welded between two ends bent upwards, the height of the front supporting beam, which is higher than the table surface of the purging table, is the radius of the galvanized pipe, and a water guide groove is hung below the front supporting beam through a hanger rod.

Above-mentioned patent adopts places many galvanized pipes in the mode that sweeps the platform, through set up a plurality of outer blowing holes on the facade of sweeping platform one side in horizontal air flue orientation, and the centre of a circle department that blows the hole outside every sets up the mode of interior blowpipe, sweeps inside and outside galvanized pipe, because galvanized pipe is longer, can't accomplish to cover comprehensively, evenly sweep to the inner wall of tubular product, sweeps the effect relatively poor.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an inside and outside purging device for a galvanized pipe.

In order to realize the above purpose, the utility model provides an inside and outside zinc-plated pipe sweeps device, include:

a frame;

the internal blowing mechanism comprises an internal blowing pipe, an air inlet and an internal blowing head; the inner blowpipe is obliquely arranged on one side of the rack, two ends of the inner blowpipe are arranged in a closed manner, and the middle part of the inner blowpipe is partitioned to divide the inner cavity into a front cavity and a rear cavity which are independent; the number of the air inlets is two, the inner blowing pipe is radially arranged on the inner blowing pipe, one air inlet is communicated with the rear end of the front cavity, and the other air inlet is communicated with the rear end of the rear cavity; the inner blowing head is arranged on the inner blowing pipe and communicated with the inner blowing pipe, and the inner blowing pipe is uniformly arranged along the axial direction of the inner blowing pipe;

the three clamping mechanisms are fixedly arranged on the rack and are respectively positioned at the front part, the middle part and the rear part of the inner blowing pipe; the blow pipe clamping device comprises a mounting frame, a bidirectional screw, a first driving motor, an upper nut pair, an upper fixing plate, an upper clamping block, a lower nut pair, a lower fixing plate and a lower clamping block, wherein the mounting frame is fixedly connected with a rack;

the two air supply mechanisms are respectively connected with the clamping mechanisms at the middle part and the rear part; the air inlet sealing device comprises a hard pipe and a flexible pipe, wherein the hard pipe is communicated with the flexible pipe, the flexible pipe is communicated with an air source, and the hard pipe is fixedly connected with an upper layer fixing plate and is used for being in butt joint and sealing fit with an air inlet;

the external blowing mechanism comprises an external blowing head and an external blowing pipe, the external blowing head is fixedly connected with the frame, the external blowing head is sleeved on the periphery of the internal blowing pipe, the output end of the external blowing pipe is communicated with the external blowing head, and the input end of the external blowing pipe is communicated with an air source;

the feeding mechanism comprises a second driving motor and a plurality of rotating shafts, the second driving motor is fixedly installed on the rack, the rotating shafts are rotatably installed on the rack, conveying grooved wheels are installed on the rotating shafts, the central connecting line of each rotating shaft is parallel to the axis of the inner blowing pipe, and the second driving motor drives the rotating shafts to rotate.

Preferably, the rotating shaft is provided with a driven chain wheel, the output end of the second driving motor is provided with a driving chain wheel, and the driving chain wheel is in transmission connection with the driven chain wheel through a transmission chain.

Preferably, the hard pipe and/or the air inlet are provided with sealing elements on the opposite end faces.

Preferably, the front end of the inner blowing head is provided with a plurality of inner blowing ports, and the inner blowing ports are communicated with the inner cavity of the inner blowing pipe.

Preferably, three proximity switches for detecting the position of the galvanized pipe are mounted on the rack, the proximity switches correspond to the clamping mechanisms one by one, and the proximity switches are located on one side of the corresponding clamping mechanisms.

Preferably, the flexible pipe is provided with a first electromagnetic valve.

Preferably, the length of the front cavity and the length of the rear cavity are both larger than the length of the galvanized pipe to be purged.

Preferably, an annular cavity and an external blowing air channel are arranged in the external blowing head, and the annular cavity is communicated with the external blowing air pipe and the external blowing air channel.

Preferably, a second electromagnetic valve is mounted on the external blowing pipe.

Preferably, a guide rod is fixed on the mounting frame, the guide rod is parallel to the two-way screw rod, and the upper-layer nut pair and the lower-layer nut pair are slidably mounted on the guide rod.

The beneficial effects of the technical scheme are as follows: the galvanized pipe which is conveyed by the conveying grooved pulley and completes hot dip galvanizing passes through the inner blowing pipe and the outer blowing heads, the three clamping mechanisms are matched with each other to clamp the inner blowing pipe, so that the galvanized pipe passes through the inner blowing pipe in the process of clamping the inner blowing pipe all the time, the position of the inner blowing pipe is kept, redundant zinc liquid on the inner surface of the galvanized pipe is uniformly blown away by the plurality of inner blowing heads, redundant zinc liquid on the outer surface of the galvanized pipe is uniformly blown away by the plurality of outer blowing heads, the inner wall and the outer wall of the galvanized pipe are completely covered and uniformly blown away, the blowing effect is improved, the thickness of the galvanized pipe is effectively controlled, and the quality of the galvanized pipe is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a working state diagram of an embodiment of the present invention;

fig. 3 is a top view partially schematic view of an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an internal blowing mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a clamping mechanism according to an embodiment of the present invention;

fig. 6 is a side view of a clamping mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an external blowing head according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an internal blowing head according to an embodiment of the present invention;

fig. 9 is a state diagram of the hard tube of the embodiment of the present invention when it is butted with the air inlet;

in the figure, 1, a frame; 2. an internal blowing mechanism; 21. an inner blowpipe; 211. a front cavity; 212. a rear cavity; 22. an air inlet; 23. an inner blowing head; 231. an inner mouthpiece; 3. a clamping mechanism; 31. a mounting frame; 311. a guide rod; 32. a bidirectional screw; 33. a first drive motor; 34. an upper layer nut pair; 35. an upper fixing plate; 36. an upper layer clamping block; 37. a lower layer nut pair; 38. a lower layer fixing plate; 39. a lower layer clamp block; 4. an air supply mechanism; 41. a hard tube; 42. a flexible tube; 43. a seal member; 44. a first solenoid valve; 5. an external blowing mechanism; 51. an external blowing head; 511. an annular cavity; 512. an external blowing air duct; 52. an external blowing pipe; 53. a second solenoid valve; 6. a feeding mechanism; 61. a second drive motor; 62. a rotating shaft; 63. a conveying sheave; 64. a driven sprocket; 65. a drive sprocket; 66. a drive chain; 7. a proximity switch; 8. a galvanized pipe.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

Referring to fig. 1 to 9, in an embodiment of the present invention, an inside and outside purging device for a galvanized pipe includes: the device comprises a frame 1, an internal blowing mechanism 2, a clamping mechanism 3, an air supply mechanism 4 and a feeding mechanism 6;

wherein, the internal blowing mechanism 2 comprises an internal blowing pipe 21, an air inlet 22 and an internal blowing head 23; the inner blow pipe 21 is obliquely arranged on one side of the frame 1, two ends of the inner blow pipe 21 are arranged in a closed manner, and the middle part of the inner blow pipe 21 is partitioned to divide the inner cavity into a front cavity 211 and a rear cavity 212 which are independent; the diameter of the inner blow pipe 21 is smaller than the inner diameter of the galvanized pipe 8, and the galvanized pipe 8 can pass through the inner blow pipe 21 to perform inner blowing; the number of the air inlets 22 is two, the inner blow pipe 21 is radially arranged on the inner blow pipe 21, one air inlet 22 is communicated with the rear end of the front cavity 211, and the other air inlet 22 is communicated with the rear end of the rear cavity 212; the inner blowing head 23 is arranged on the inner blowing pipe 21 and communicated with the inner blowing pipe 21, and the inner blowing pipe 21 is uniformly arranged along the axial direction of the inner blowing pipe 21;

the number of the clamping mechanisms 3 is three, the clamping mechanisms 3 are fixedly arranged on the rack 1, and the three clamping mechanisms 3 are respectively positioned at the front part, the middle part and the rear part of the inner blowing pipe 21; the clamping mechanism 3 comprises an installation frame 31, a two-way screw 32, a first driving motor 33, an upper nut pair 34, an upper fixing plate 35, an upper clamping block 36, a lower nut pair 37, a lower fixing plate 38 and a lower clamping block 39, the installation frame 31 is fixedly connected with the rack 1, the two-way screw 32 is rotatably installed on the installation frame 31 through a bearing, the first driving motor 33 is installed on the installation frame 31, the first driving motor 33 is in transmission connection with the two-way screw 32, the two-way screw 32 is provided with upper and lower thread sections, the upper nut pair 34 is in thread installation on the thread section of the upper part of the two-way screw 32, the upper fixing plate 35 is fixedly connected with the upper nut pair 34, the upper clamping block 36 is fixedly connected with the upper fixing plate 35, the lower nut pair 37 is in thread installation on the thread section of the lower part of the two-way screw 32, the lower fixing plate 38 is fixedly connected with the lower nut pair 37, the lower clamping block 39 is fixedly connected with the lower fixing plate 38, and the upper clamping block 36 is matched with the lower clamping block 39 for clamping the inner blow pipe 21; the first driving motor 33 is a stepping motor, so that the rotation angle of the bidirectional screw 32 can be accurately controlled, the displacement of the upper nut pair 34 and the lower nut pair 37 can be controlled, and the inner blowpipe 21 can be accurately clamped;

the two air supply mechanisms 4 are respectively connected with the middle clamping mechanism 3 and the rear clamping mechanism 3; the air supply mechanism 4 comprises a hard pipe 41 and a flexible pipe 42, the hard pipe 41 is communicated with the flexible pipe 42, the flexible pipe 42 is communicated with an air source, and the hard pipe 41 is fixedly connected with the upper fixing plate 35 and is used for being in butt joint sealing fit with the air inlet 22; the flexible pipe 42 has flexibility, so that when the hard pipe 41 is fixed to ascend and descend along with the upper fixing plate 35, the flexible pipe 42 is not affected and can be stably communicated with an air source.

The external blowing mechanism 5 comprises an external blowing head 51 and an external blowing air pipe 52, the external blowing head 51 is fixedly connected with the frame 1, the external blowing head 51 is sleeved on the periphery of the internal blowing pipe 21, the output end of the external blowing air pipe 52 is communicated with the external blowing head 51, and the input end of the external blowing air pipe 52 is communicated with an air source; the air source is an air compressor or an air pump; the outer blowing head 51 is provided in plurality and arranged at the periphery of the front cavity 211 of the inner blowing pipe 21; other embodiments are of course also possible, either individually or simultaneously, arranged around the rear cavity 212 of the inner lance tube 21;

the feeding mechanism 6 comprises a second driving motor 61 and a plurality of rotating shafts 62, the second driving motor 61 is fixedly installed on the frame 1, the rotating shafts 62 are rotatably installed on the frame 1, a conveying sheave 63 is installed on the rotating shafts 62, a central connecting line of each rotating shaft 62 is parallel to an axis of the inner blowing pipe 21, so that the axis of the galvanized pipe 8 conveyed by the conveying sheave 63 is parallel to the axis of the inner blowing pipe 21, the galvanized pipe 8 can conveniently penetrate through the inner blowing pipe 21, and the second driving motor 61 drives the rotating shafts 62 to rotate. The second driving motor 61 is a variable frequency motor, which is convenient for controlling the feeding speed. The conveying grooved pulley 63 is a V-shaped grooved pulley or a U-shaped grooved pulley, and the galvanized pipe 8 is positioned while the galvanized pipe 8 is conveyed, so that the radial movement of the galvanized pipe 8 is limited, and the position deviation of the galvanized pipe 8 is avoided.

In order to drive the rotating shaft 62 to rotate, a driven sprocket 64 is installed on the rotating shaft 62, a driving sprocket 65 is installed at the output end of the second driving motor 61, and the driving sprocket 65 is in transmission connection with the driven sprocket 64 through a transmission chain 66. The second driving motor 61 drives the driven sprocket 64 and the rotating shaft 62 to rotate by the driving sprocket 65 through the driving sprocket 65 and the driving chain 66 through the driving chain 66, so that each of the conveying sheaves 63 rotates to convey the galvanized pipe 8.

In order to enable the hard pipe 41 and the air inlet 22 to be connected in a sealing manner when in butt joint, a sealing element 43 is installed on the end face of the hard pipe 41 facing the air inlet 22, of course, the sealing element 43 can also be installed on the end face of the air inlet 22 facing the hard pipe 41, or the sealing elements 43 are installed on the opposite end faces of the hard pipe 41 and the air inlet 22, and the sealing element 43 is a sealing washer, so that the butt joint of the hard pipe and the air inlet 22 can be sealed.

In order to enable the inner blowing head 23 to spray air flow towards the galvanized pipe 8, a plurality of inner blowing openings 231 are arranged at the front end of the inner blowing head 23, and the inner blowing openings 231 are communicated with the inner cavity of the inner blowing pipe 21. And the spraying direction of the inner blowing opening 231 and the inner blowing pipe 21 are kept inclined and can face the galvanized pipe 8, so that the inner blowing opening 231 can fully blow the airflow to the inner surface of the galvanized pipe 8.

In order to obtain the position of the galvanized pipe 8 and control the corresponding clamping mechanism 3 to work, three proximity switches 7 for detecting the position of the galvanized pipe 8 are installed on the rack 1, the proximity switches 7 correspond to the clamping mechanisms 3 one by one, and the proximity switches 7 are located on one side of the clamping mechanism 3 corresponding to the proximity switches. After the proximity switch 7 detects the position information of the galvanized pipe 8, the corresponding clamping mechanism 3 works.

To facilitate control of the aeration of the flexible tube 42, the galvanized tube 8 is internally blown, and a first solenoid valve 44 is mounted on the flexible tube 42.

Preferably, the length of each of the front chamber 211 and the rear chamber 212 is greater than the length of the galvanized pipe 8 to be purged.

In order to facilitate the external blowing of the galvanized pipe 8, an annular cavity 511 and an external blowing duct 512 are arranged in the external blowing head 51, and the annular cavity 511 is communicated with the external blowing pipe 52 and the external blowing duct 512. The air flow delivered by the external blowing pipe 52 firstly enters the annular cavity 511, then is rectified by the external blowing duct 512, and is uniformly discharged from the external blowing duct 512 to be blown to the outer surface of the galvanized pipe 8.

In order to control the ventilation of the external blowing air pipe 52 and externally blow the galvanized pipe 8, a second electromagnetic valve 53 is installed on the external blowing air pipe 52.

In order to enable the upper nut pair 34 and the lower nut pair 37 to move linearly in the axial direction of the bidirectional screw 32 by driving the bidirectional screw 32, a guide rod 311 is fixed to the mounting bracket 31, the guide rod 311 is arranged in parallel with the bidirectional screw 32, and the upper nut pair 34 and the lower nut pair 37 are slidably mounted on the guide rod 311. The guide rod 311 has a guiding function, and can limit the rotation of the upper nut pair 34 and the lower nut pair 37, so that the upper nut pair 34 and the lower nut pair 37 can move linearly along the axial direction of the bidirectional screw 32 under the driving of the bidirectional screw 32.

In the present embodiment, all electrical components are connected to their adapted power supplies through wires, and an appropriate controller should be selected according to actual conditions to meet control requirements, specific connections and control sequences, and reference should be made to the following working principles in which electrical connections are completed between the electrical components in sequence.

The working principle of the embodiment is as follows:

s1, at the beginning, the three clamping mechanisms 3 clamp the inner blowing pipe 21, the galvanized pipe 8 subjected to hot dip galvanizing enters a conveying grooved wheel 63 from the front end of the device, and the first driving motor 33 drives the conveying grooved wheel 63 to rotate so as to convey the galvanized pipe 8 to the front end of the inner blowing pipe 21;

s2, when the galvanized pipe 8 is conveyed to the position close to the front end of the inner blow pipe 21, the proximity switch 7 at the front end of the rack 1 detects a signal of the galvanized pipe 8, the clamping mechanism 3 positioned in the front of the inner blow pipe 21 works and does not clamp the inner blow pipe 21 any more, specifically, the second driving motor 61 drives the bidirectional screw 32 to rotate, the upper nut pair 34 and the lower nut pair 37 move back to back, the upper clamping block 36 and the lower clamping block 39 are far away from each other and do not clamp the inner blow pipe 21 any more, and the galvanized pipe 8 passes through the open position;

s3, the second electromagnetic valve 53 and the first electromagnetic valve 44 positioned in the middle of the internal blowing pipe 21 are electrified, the external blowing pipe 52 sends high-pressure air flow into the external blowing head 51, the external blowing head 51 blows the air flow to the outer surface of the passing galvanized pipe 8, the flexible pipe 42 sends the high-pressure air flow into the hard pipe 41, the hard pipe 41 is communicated with the air inlet 22 at the moment, the hard pipe 41 in the middle sends the air flow into the front cavity 211, the hard pipe 41 in the rear sends the air flow into the rear cavity 212, and the internal blowing head 23 blows the air flow to the inner surface of the passing galvanized pipe 8, so that the inside and the outside of the galvanized pipe 8 are fully blown, and the blowing effect is effectively improved;

s4, when the galvanized pipe 8 moves to the proximity switch 7 in the middle, the proximity switch 7 detects a signal of the galvanized pipe 8, at this time, the galvanized pipe 8 passes through the clamping mechanism 3 at the front end, the clamping mechanism 3 positioned at the front part of the inner blowpipe 21 works, the inner blowpipe 21 is clamped again, specifically, the second driving motor 61 drives the bidirectional screw 32 to rotate reversely, the upper-layer nut pair 34 and the lower-layer nut pair 37 move oppositely, and the upper-layer clamping block 36 and the lower-layer clamping block 39 are close to each other until the inner blowpipe 21 is clamped again; then the clamping mechanism 3 positioned in the middle of the inner blowpipe 21 works, the inner blowpipe 21 is not clamped any more, the second driving motor 61 is electrified, the corresponding first electromagnetic valve 44 positioned in the middle of the inner blowpipe 21 is powered off, the second driving motor 61 drives the two-way screw 32 to rotate, the upper nut pair 34 and the lower nut pair 37 move back to back, the upper clamping block 36, the lower clamping block 39 and the hard pipe 41 are far away from the inner blowpipe 21, and the zinc-coated pipe 8 passes through the open position; meanwhile, the second electromagnetic valve 44 positioned at the rear part of the internal blowing pipe 21 is electrified, and airflow is introduced into the rear cavity to blow and sweep the inner surface of the galvanized pipe 8 passing through;

s5, after the galvanized pipe 8 passes through the clamping mechanism 3 in the middle of the inner blowpipe 21, the clamping mechanism 3 in the middle of the inner blowpipe 21 clamps the inner blowpipe 21 again, and the hard pipe 41 is in sealing butt joint with the air inlet 22 while the inner blowpipe 21 is clamped by the upper clamping block 36 and the lower clamping block 39; at this time, the front end of the frame 1 can be input into the next galvanized pipe 8 again;

s6, when the galvanized pipe 8 moves to the proximity switch 7 at the rear part, the proximity switch 7 detects a signal of the galvanized pipe 8, at the moment, the galvanized pipe 8 passes through the clamping mechanism 3 positioned in the middle of the inner blowpipe 21, the clamping mechanism 3 positioned at the rear part of the inner blowpipe 21 works and does not clamp the inner blowpipe 21 any longer, the upper-layer clamping block 36, the lower-layer clamping block 39 and the hard pipe 41 are far away from the inner blowpipe 21, and the galvanized pipe 8 passes through the open position; at the moment, if a next galvanized pipe 8 enters, the clamping mechanism 3 positioned in the middle independently clamps the inner blowpipe 21, and in the whole purging process, the clamping mechanism 3 always clamps the inner blowpipe 21, so that the inner blowpipe 21 can be prevented from rotating; in addition, the front clamping mechanism 3 and the rear clamping mechanism 3 cannot independently clamp the inner blowing pipe 21, so that clamping failure caused by overlarge torque is avoided.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Claims (10)

1. A galvanized pipe (8) inside and outside purging device comprises:

a frame (1);

it is characterized by also comprising:

the internal blowing mechanism (2) comprises an internal blowing pipe (21), an air inlet (22) and an internal blowing head (23); the inner blow pipe (21) is obliquely arranged on one side of the rack (1), two ends of the inner blow pipe (21) are arranged in a closed mode, and the middle of the inner blow pipe (21) is partitioned to enable the inner cavity of the inner blow pipe to be divided into a front cavity (211) and a rear cavity (212) which are independent; the number of the air inlets (22) is two, the inner blow pipe (21) is radially arranged on the inner blow pipe (21), one air inlet (22) is communicated with the rear end of the front cavity (211), and the other air inlet (22) is communicated with the rear end of the rear cavity (212); the inner blowing head (23) is arranged on the inner blowing pipe (21) and is communicated with the inner blowing pipe (21), and the inner blowing pipe (21) is uniformly arranged along the axial direction of the inner blowing pipe (21);

the three clamping mechanisms (3) are fixedly arranged on the rack (1) and are respectively positioned at the front part, the middle part and the rear part of the inner blowing pipe (21); the blow pipe welding machine comprises an installation frame (31), a two-way screw (32), a first driving motor (33), an upper nut pair (34), an upper fixing plate (35), an upper clamping block (36), a lower nut pair (37), a lower fixing plate (38) and a lower clamping block (39), wherein the installation frame (31) is fixedly connected with a machine frame (1), the two-way screw (32) is rotatably installed on the installation frame (31), the first driving motor (33) is in transmission connection with the two-way screw (32), the upper nut pair (34) is in threaded installation on a threaded section of the upper portion of the two-way screw (32), the upper fixing plate (35) is fixedly connected with the upper nut pair (34), the upper clamping block (36) is fixedly connected with the upper fixing plate (35), the lower nut pair (37) is in threaded installation on an upper threaded section of the lower portion of the two-way screw (32), the lower fixing plate (38) is fixedly connected with the lower nut pair (37), the lower clamping block (39) is fixedly connected with the lower fixing plate (38), and the upper clamping block (36) is matched with the lower clamping block (39) for clamping in the blow pipe (21);

the two air supply mechanisms (4) are respectively connected with the clamping mechanisms (3) at the middle part and the rear part; the air-conditioning system comprises a hard pipe (41) and a flexible pipe (42), wherein the hard pipe (41) is communicated with the flexible pipe (42), the flexible pipe (42) is communicated with an air source, and the hard pipe (41) is fixedly connected with an upper fixing plate (35) and is used for being in butt joint and sealing fit with an air inlet (22);

the external blowing mechanism (5) comprises an external blowing head (51) and an external blowing air pipe (52), the external blowing head (51) is fixedly connected with the rack (1), the external blowing head (51) is sleeved on the periphery of the internal blowing pipe (21), the output end of the external blowing air pipe (52) is communicated with the external blowing head (51), and the input end of the external blowing air pipe (52) is communicated with an air source;

the feeding mechanism (6) comprises a second driving motor (61) and a plurality of rotating shafts (62), the second driving motor (61) is fixedly installed on the rack (1), the rotating shafts (62) are rotatably installed on the rack (1), conveying grooved wheels (63) are installed on the rotating shafts (62), a central connecting line of each rotating shaft (62) is parallel to the axis of the inner blowing pipe (21), and the second driving motor (61) drives the rotating shafts (62) to rotate.

2. The inside and outside purging device for the galvanized pipe (8) according to claim 1, wherein a driven sprocket (64) is installed on the rotating shaft (62), a driving sprocket (65) is installed at the output end of the second driving motor (61), and the driving sprocket (65) is in transmission connection with the driven sprocket (64) through a transmission chain (66).

3. A zinc-coated pipe (8) inside and outside purging device according to claim 1, characterized in that the hard pipe (41) and/or the air inlet (22) are provided with sealing elements (43) on the opposite end faces.

4. The inside and outside purging device for the galvanized pipe (8) according to claim 1, characterized in that a plurality of inner blowing ports (231) are arranged at the front end of the inner blowing head (23), and the inner blowing ports (231) are communicated with the inner cavity of the inner blowing pipe (21).

5. The inside and outside purging device for the galvanized pipe (8) according to claim 1, characterized in that three proximity switches (7) for detecting the position of the galvanized pipe (8) are installed on the rack (1), the proximity switches (7) correspond to the clamping mechanisms (3) one by one, and the proximity switches (7) are located on one side of the clamping mechanisms (3) corresponding to the proximity switches.

6. The inside and outside purging device for galvanized pipe (8) according to claim 1, characterized in that a first electromagnetic valve (44) is mounted on the flexible pipe (42).

7. The inside and outside purging device for galvanized pipes (8) according to claim 1, characterized in that the length of the front cavity (211) and the length of the rear cavity (212) are both greater than the length of the galvanized pipe (8) to be purged.

8. The inside and outside blowing device for the galvanized pipe (8) according to claim 1, characterized in that an annular cavity (511) and an outside blowing duct (512) are arranged in the outside blowing head (51), and the annular cavity (511) is communicated with the outside blowing pipe (52) and the outside blowing duct (512).

9. The inside and outside blowing device for galvanized pipe (8) according to claim 1, characterized in that a second electromagnetic valve (53) is mounted on the outside blowing pipe (52).

10. The inside and outside purging device for the galvanized pipe (8) according to claim 1, characterized in that a guide rod (311) is fixed on the mounting frame (31), the guide rod (311) is arranged in parallel with the bidirectional screw (32), and the upper nut pair (34) and the lower nut pair (37) are slidably mounted on the guide rod (311).

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