CN212076032U

CN212076032U - Retractable blowing lead device

Info

Publication number: CN212076032U
Application number: CN202020427908.1U
Authority: CN
Inventors: 张枫华; 张朱晨
Original assignee: Nanjing Longma Communication Engineering Co ltd
Current assignee: Nanjing Longma Communication Engineering Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-12-04
Anticipated expiration: 2030-03-27

Abstract

The utility model relates to a lead wire device is blown to formula of withdrawing, its including a jar body, with the intake pipe of jar body intercommunication and set up at the internal lead wire laying mechanism of jar, be equipped with the leading-out terminal with the pipeline intercommunication on the jar body, lead wire laying mechanism includes the rolling dish, the rolling dish passes through the main shaft and rotates the connection at jar internal, the internal driving motor that is used for driving main shaft pivoted that is equipped with of jar. The utility model discloses have and can retrieve the effect on the rolling dish with the lead wire automatically.

Description

Retractable blowing lead device

Technical Field

The utility model belongs to the technical field of the technique of lead wire construction and specifically relates to a lead wire device is blown to recovery formula.

Background

At present, the lead wire is usually required to be placed into a pipeline in the lead wire construction process, and a rod penetrating device is generally used for placing the lead wire into a pre-buried pipeline at a short distance. However, if the duct is long, the cable blowing process is generally used, i.e. the cable is blown into the pre-buried duct by high pressure air.

Referring to fig. 1 and 2, a conventional wire blowing device includes a tank 1 and an air inlet pipe 2 communicated with the tank 1, wherein the air inlet pipe 2 is externally connected with an air source to inject high-pressure air into the tank 1. Be equipped with an outlet terminal 13 and a manometer 8 on jar body 1, lead wire 4 stretches out from outlet terminal 13 and connects the shuttle, manometer 8 can detect the pressure size in jar body 1, jar body 1 includes half shell 11 of first half and half shell 12 of second, forms jar body 1 when half shell 11 of first half and half shell 12 relative one end of second splice each other, is equipped with rolling dish 31 in jar body 1, can blow off lead wire 4 when intake pipe 2 lets in high-pressure draught.

The above prior art solutions have the following drawbacks: after the lead wire 4 is blown out, the operator needs to separate the first half shell 11 and the second half shell 12, and then manually rewind the lead wire 4 onto the take-up reel 31, which is inefficient.

SUMMERY OF THE UTILITY MODEL

To prior art exist not enough, one of the purposes of the utility model is to provide a can be automatically with the lead wire retrieve to wind up the formula of retrieving on the dish and blow the lead wire device.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a lead wire device is blown to formula of withdrawing, including a jar body, with the intake pipe of jar body intercommunication and set up at the internal lead wire arrangement mechanism of jar, jar be equipped with the leading-out terminal with the pipeline intercommunication on the body, lead wire arrangement mechanism includes the rolling dish, the rolling dish passes through the main shaft and rotates to be connected at jar internally, the internal driving motor that is used for driving main shaft pivoted that is equipped with of jar.

Through adopting above-mentioned technical scheme, high-pressure gas gets into and blows off the lead wire from the intake pipe, and the rolling dish forward rotation and emit the lead wire this moment, and after the lead wire accomplished the work task, the operator can start driving motor, and driving motor drive main shaft and rolling dish antiport to it is internal to withdraw the lead wire to the jar fast convenient, with quick convenient back with the lead wire rolling, so that use next time.

The present invention may be further configured in a preferred embodiment as: the tank body is connected with a driving wheel which is coaxial with the main shaft in a rotating mode, the output end of the driving motor is provided with a driving wheel, the driving wheel and the driving wheel are in transmission through a belt, the main shaft is connected with a clutch disc in a sliding mode along the length direction, one side, opposite to the driving wheel and the clutch disc, of the driving wheel is provided with a first clamping block and a second clamping block which are clamped with each other, and a pushing piece used for driving the clutch disc to move towards the driving wheel is arranged in the tank.

By adopting the technical scheme, when the lead wire needs to be wound, the pushing piece drives the clutch disc to move towards the driving wheel until the first clamping block and the second clamping block are clamped with each other, then the driving motor works, the driving wheel drives the driving wheel to rotate through the belt, the driving wheel drives the clutch disc to rotate and drives the main shaft and the winding disc to rotate in the reverse direction, and therefore the lead wire is retracted; when all the leads are withdrawn, the driving motor stops working, and the pushing piece drives the clutch disc to withdraw, so that the first clamping block and the second clamping block are separated from each other, the possibility that the leads are broken due to the fact that the winding disc is continuously driven under the inertia effect of the driving wheel is reduced, and the winding safety of the winding disc to the leads is improved.

The present invention may be further configured in a preferred embodiment as: the driving piece comprises a driving cylinder and a shifting rod, the shifting rod is connected to the output end of the driving cylinder, a shifting groove is formed in the periphery of the clutch disc, and one end, far away from the driving cylinder, of the shifting rod extends into the shifting groove.

Through adopting above-mentioned technical scheme, when driving actuating cylinder's output and stretching out, the driving lever is conflicting and is dialling the groove cell wall and promote the clutch disc and move towards the action wheel, until first fixture block and the mutual joint of second fixture block, when the action wheel drove the clutch disc and rotates, the driving lever slided in dialling the groove, can not influence the normal rotation of clutch disc to nimble convenient drive the clutch disc.

The present invention may be further configured in a preferred embodiment as: the cylinder body of the driving cylinder is provided with a drag hook, the output end of the driving cylinder is provided with a pull ring, and a tension spring is connected between the drag hook and the pull ring.

Through adopting above-mentioned technical scheme, extension spring has a pulling force to the pull ring all the time to when driving actuating cylinder inefficacy, can be rapidly automatic pull the pull ring back, with the separation of closing dish and action wheel, reduce the unusual pivoted possibility of rolling dish, and then play a guard action to the impeller.

The present invention may be further configured in a preferred embodiment as: the internal rotation of jar is connected with reciprocal lead screw, the internal slide bar that is on a parallel with reciprocal lead screw that is equipped with of jar, the slide bar slides on the slide bar and is connected with the slider, slider threaded connection is on reciprocal lead screw, be equipped with the guide ring on the slider, the lead wire is worn to locate in the guide ring, the internal transmission unit that is used for driving reciprocal lead screw pivoted that is equipped with of jar.

Through adopting above-mentioned technical scheme, the rolling dish is when the rolling lead wire, and the reciprocating screw rod of drive unit work and drive rotates, and the slider is reciprocating motion along reciprocating screw rod and the length direction of rolling dish this moment to make more even distribution of lead wire on the rolling dish, reduce the lead wire and concentrate the possibility of piling up in the middle part of the rolling dish, improve the rolling quality, reduce the condition emergence of card line.

The present invention may be further configured in a preferred embodiment as: the internal meter wheel that is equipped with of jar, the lead wire is contradicted meter takes turns to, the jar body is equipped with a spacing ring respectively along meter wheel's radial in meter wheel's front and back both sides.

By adopting the technical scheme, the meter counting wheel can measure the releasing length and the withdrawing length of the lead wire, so that a constructor can accurately control the progress of the project in real time; the two limiting rings can limit the walking direction of the section of the lead wire which is butted on the meter counting wheel, so that the lead wire is always released or withdrawn along the radial direction of the meter counting wheel, the possibility that the lead wire deviates or breaks away from the meter counting wheel is reduced, and the detection accuracy of the meter counting wheel is ensured.

The present invention may be further configured in a preferred embodiment as: a sliding sleeve is connected in the wire outlet end in a sliding manner, one end of a lead wire penetrating through the sliding sleeve is connected with a stop ring, the caliber of the stop ring is larger than the inner diameter of the sliding sleeve, and a proximity switch is arranged in the wire outlet end; when the stop ring butts against one end of the sliding sleeve extending out of the wire outlet end and pulls the sliding sleeve, the sliding sleeve moves to the position above the proximity switch, and the proximity switch controls the driving motor to stop.

Through adopting above-mentioned technical scheme, when the lead wire is about to be all withdrawed, the snap ring is contradicted at the sliding sleeve tip to promote the sliding sleeve and slide to jar internal portion, thereby trigger proximity switch control driving motor and stop, automatic intelligent stopping is received the line, prevents that the lead wire from being torn apart.

The present invention may be further configured in a preferred embodiment as: the wire outlet end is internally provided with a fixed sleeve, the sliding sleeve is connected in the fixed sleeve in a sliding manner, the sliding sleeve is provided with a return spring, and two ends of the return spring are respectively fixed on the sliding sleeve and the fixed sleeve.

Through adopting above-mentioned technical scheme, when the lead wire was normally released or was withdrawed the state, the sliding sleeve was in partial state of stretching out all the time under reset spring's elastic force to reduce the sliding sleeve and withdraw and lead to the possibility that the proximity switch mistake touched under the circumstances of taking place the friction with the lead wire, improve proximity switch's trigger accuracy.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the lead can be quickly and conveniently wound and recovered on the reel so as to be convenient for next use;

2. the setting up of reciprocal lead screw makes the lead wire can be more even distribution on the rolling dish, reduces the lead wire and concentrates the possibility of piling up in the rolling dish middle part, improves the rolling quality, and the condition that reduces the card line takes place.

Drawings

Fig. 1 is a schematic structural diagram of a prior art device for embodying blown wire.

Fig. 2 is a schematic diagram of the internal structure of a can used to embody a blow-off wire device in the prior art.

Fig. 3 is a schematic view of the entire structure of the present embodiment.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic structural diagram of a lead laying mechanism according to the present embodiment.

Fig. 6 is an enlarged view of a portion B in fig. 5.

Fig. 7 is an enlarged view of a portion C in fig. 5.

Fig. 8 is an enlarged view of a portion D in fig. 5.

In the figure, 1, a tank body; 11. a first half shell; 12. a second half shell; 13. a wire outlet end; 131. a sliding sleeve; 1311. a limiting ring; 132. a snap ring; 133. a proximity switch; 134. fixing a sleeve; 135. a return spring; 2. an air inlet pipe; 3. a lead laying mechanism; 31. a winding disc; 32. a main shaft; 321. a clutch plate; 3211. a groove is poked; 322. a second fixture block; 33. a drive motor; 331. a drive wheel; 332. a belt; 34. a driving wheel; 341. a first clamping block; 35. a pusher member; 351. a driving cylinder; 352. a deflector rod; 353. pulling a hook; 354. a pull ring; 355. an extension spring; 36. a reciprocating screw rod; 37. a slide bar; 371. a slider; 372. a guide ring; 38. a transmission unit; 381. a first gear; 382. a deceleration shaft; 383. a second gear; 3831. a second pinion gear; 384. a third gear; 3841. a third pinion gear; 385. a fourth gear; 386. a speed bump; 4. a lead wire; 5. a support frame; 6. a locking lever; 61. a locking block; 611. an ear plate; 62. a synchronization lever; 7. clamping a plate; 71. a notch; 8. a pressure gauge; 9. a meter wheel; 91. the contact ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 3, for the utility model discloses a lead wire device is blown to recovery formula, including jar body 1 and with the intake pipe 2 of jar body 1 intercommunication, the external air supply of intake pipe 2 to the internal high-pressure draught of dashing into of jar body 1. The tank body 1 is provided with a leading-out terminal 13 and a pressure gauge 8, the leading wire 4 extends out of the leading-out terminal 13, and the pressure gauge can detect the pressure in the tank body 1.

Referring to fig. 3 and 4, the tank body 1 comprises a first half shell 11 and a second half shell 12, opposite ends of the first half shell 11 and the second half shell 12 are spliced with each other to form the tank body 1, one end of the first half shell 11 facing the second half shell 12 is hinged with ten locking rods 6 along the outer periphery, two locking rods 6 are respectively arranged on two sides of the first half shell 11 in the width direction, and the two locking rods 6 are hinged on the first half shell 11. First half shell 11 is equipped with three locking lever 6 respectively on length direction's both sides, and first half shell 11 all rotates on length direction's both sides to be connected with a synchronizing bar 62, and three locking lever 6 on same long limit all fixes on synchronizing bar 62 with the same direction, and these three locking lever 6 are equivalent to articulate on first half shell 11 this moment, and when operator rotated one of them locking lever 6, can drive two other locking lever 6 that are located synchronizing bar 62 and rotate together through synchronizing bar 62.

Referring to fig. 3 and 4, ten clamping plates 7 are arranged on the second half shell 12 corresponding to the locking rods 6, notches 71 are formed in the clamping plates 7, when an operator rotates the locking rods 6 upwards, the locking rods 6 are rotated into the notches 71, at the moment, locking blocks 61 are in threaded connection with the locking rods 6, two lug plates 611 convenient for the operator to twist are arranged on the locking blocks 61, the operator twists the locking blocks 61 downwards to enable the locking blocks 61 to be abutted to one side, deviating from the synchronizing rod 62, of the clamping plates 7, and after the locking blocks 61 on all the locking rods 6 are abutted to the clamping plates 7, the first half shell 11 and the second half shell 12 are spliced into the tank body 1 quickly.

Referring to fig. 5 and 6, a lead wire laying mechanism 3 is arranged in the tank body 1, the lead wire laying mechanism 3 includes two bearing seats 30 and a spindle 32 rotatably connected between the two bearing seats 30, a winding disc 31 is fixedly arranged on the spindle 32, one end of a lead wire 4 is wound on the winding disc 31, and the other end extends out of the wire outlet end 13 of the tank body 1. A driving motor 33 is arranged in the tank body 1, the driving motor 33 is arranged in parallel with the main shaft 32, the output end of the driving motor 33 is fixedly connected with a driving wheel 331, the outer edge of a bearing seat 30 close to the driving wheel 331 is rotatably connected with a driving wheel 34 through a bearing, the driving wheel 34 and the driving wheel 331 are transmitted through a belt 332, a clutch disc 321 is connected on the main shaft 32 in a sliding mode through a sliding key along the length direction, and the driving wheel 34 and the clutch disc 321 are arranged coaxially with the main shaft 32. The first fixture 341 is arranged on one side of the driving wheel 34 facing the clutch disc 321, the second fixture 322 is arranged on one side of the clutch disc 321 facing the driving wheel 34, the pushing part 35 for driving the clutch disc 321 to move towards the driving wheel 34 is arranged in the can body 1, and when the pushing part 35 drives the clutch disc 321 to move towards the driving wheel 34 and enables the first fixture 341 and the second fixture 322 to be clamped with each other, the driving motor 33 can drive the spindle 32 and the winding disc 31 to rotate reversely so as to wind the lead 4.

Referring to fig. 5 and 6, the pushing member 35 includes a driving cylinder 351 and a shift lever 352, the driving cylinder 351 is parallel to the main shaft 32, and at this time, the driving cylinder 351, the main shaft 32 and the driving motor 33 are all parallel and distributed along the length direction of the can body 1, so that the structure is compact, the space occupancy rate is high, and the can body 1 is conveniently made small so as to reduce the volume of the whole device. The clutch disc 321 is provided with a shifting groove 3211 along the periphery, one end of the shifting rod 352 is connected to the output end of the driving cylinder 351, the other end of the shifting rod extends into the shifting groove 3211, the tail of the cylinder body of the driving cylinder 351 is provided with a draw hook 353, the hook portion of the draw hook 353 faces the output end of the driving cylinder 351, the output end of the driving cylinder 351 is fixedly provided with a pull ring 354, an extension spring 355 is arranged between the draw hook 353 and the pull ring 354, two ends of the extension spring 355 are respectively hooked on the hook portions of the pull ring 354 and the draw hook 353, and the extension spring 355 is always in an extension state, so that the output end of the driving cylinder 351 is provided with backward pulling force which pulls the shifting rod 352 backwards when the driving cylinder 351 does not work or fails, the shifting rod 352 abuts against the wall of the shifting groove 3211 and drives the clutch disc 321 to move towards the direction far away from the driving wheel 34 until the first fixture block 341 and the, the take-up reel 31 can normally pay out the lead wire 4 at this time.

Referring to fig. 5, a fixed sleeve 134 is fixedly disposed in the outlet end 13 of the tank 1, a sliding sleeve 131 is disposed in the fixed sleeve 134 in a penetrating manner and slidably connected along the length direction of the outlet end 13, one end of the sliding sleeve 131 extends out of the outlet end 13 and is fixedly connected with a contact ring 91, and the outer diameter of the contact ring 91 is larger than the inner diameter of the outlet end 13, so as to prevent the sliding sleeve 131 from completely sliding into the outlet end 13. The sliding sleeve 131 is provided with a step portion on one side of the interference ring 91 facing the fixed cylinder, the outer diameter of the step portion is the same as the inner diameter of the outlet end 13, and the matching of the step portion and the outlet end 13 can enable the sliding sleeve 131 to slide along the length direction of the outlet end 13 more accurately, so as to reduce the possibility of jamming of the sliding sleeve 131. The sliding sleeve 131 is sleeved with a return spring 135, two ends of the return spring 135 are respectively fixed on the opposite sides of the step portion and the fixed sleeve 134, and when the sliding sleeve 131 is not subjected to an external force, the step portion partially extends out of the outlet end 13. The outlet end 13 is provided with a proximity switch 133 at a side of the fixed sleeve 134 departing from the step portion, one end of the lead 4 away from the winding disc 31 penetrates out of the sliding sleeve 131 and is connected with a stop ring 132, the caliber of the stop ring 132 is larger than the inner diameters of the sliding sleeve 131 and the interference ring 91, when the lead 4 is to be completely retracted into the can body 1, the stop ring 132 abuts against the interference ring 91 and pulls the sliding sleeve 131 to slide towards the inside of the can body 1, at this time, the sliding sleeve 131 moves to above the proximity switch 133, the proximity switch 133 triggers and controls the driving motor 33 to stop, and meanwhile, the pushing member 35 drives the clutch disc 321 to move, so that the first fixture 341 and the second fixture 322 are kept separated from each other, and the winding disc 31 stops winding the lead 4 to prevent. After the winding disc 31 stops winding, the lead wire 4 is not stressed, and the return spring 135 is compressed to have elastic restoring force, so that the sliding sleeve 131 is pushed to slide towards the outside of the outlet end 13, and the sliding sleeve 131 leaves above the proximity switch 133 and returns to the initial position.

Referring to fig. 5 and 7, a support frame 5 is arranged in the tank body 1, a slide rod 37 is fixedly arranged on the support frame 5, a reciprocating screw rod 36 is rotatably connected to the support frame 5, and the slide rod 37 and the reciprocating screw rod 36 are both arranged in parallel to the main shaft 32. The sliding rod 37 is sleeved and slidably connected with a sliding block 371, the sliding block 371 is further penetrated and threadedly connected to the reciprocating screw rod 36, a circular guide ring 372 is fixedly arranged at the bottom of the sliding block 371, and the lead 4 passes through the guide ring 372 and the sliding sleeve 131 and then extends out of the lead outlet 13.

Referring to fig. 5 and 7, a transmission unit 38 for driving the reciprocating screw rod 36 to rotate is arranged in the tank body 1, the transmission unit 38 includes a first gear 381 fixed on the main shaft 32, a second gear 383 rotatably connected on the inner wall of the tank body 1 through a speed reducing shaft 382, a third gear 384 rotatably connected on the support frame 5, and a fourth gear 385 fixed on the reciprocating screw rod 36, a second pinion 3831 is coaxially fixed on the side surface of the second gear 383, a third pinion 3841 is coaxially fixed on the side surface of the third gear 384, the first gear 381 and the second gear 383 are connected through a speed reducing belt 386, the third gear 384 is engaged with the second pinion 3831, the fourth gear 385 is engaged with the third pinion 3841, so that when the main shaft 32 rotates, the reciprocating screw rod 36 can be driven to rotate through the transmission unit 38, at this time, the slider 371 moves back and forth along the length direction of the reciprocating screw rod 36 to uniformly wind the lead 4 on the wind-up reel 31, the lead wire 4 is prevented from being locally accumulated on the take-up reel 31. The rotating speed of the main shaft 32 is often fast, the diameter of the second gear 383 is larger than that of the first gear 381, the diameter of the second gear 383 is larger than that of the second pinion 3831, the diameter of the third gear 384 is larger than that of the second pinion 3841, the diameter of the third gear 384 is larger than that of the third pinion 3841, and the diameter of the fourth gear 385 is larger than that of the third pinion 3841.

Referring to fig. 5 and 8, a meter counting wheel 9 is arranged in the tank body 1, the tank body 1 is respectively provided with a limit ring 1311 at the front side and the rear side of the meter counting wheel 9 along the radial direction of the meter counting wheel 9, the lead 4 between the lead-out end 13 and the guide ring 372 passes through the two limit rings 1311, and the lead 4 between the two limit rings 1311 is abutted against the meter counting wheel 9, at this time, the two limit rings 1311 can limit the walking direction of the section of the lead 4 abutted against the meter counting wheel 9, so that the lead 4 is always released or withdrawn along the radial direction of the meter counting wheel 9, thereby reducing the possibility that the lead 4 deviates or is separated from the meter counting wheel 9, and ensuring the detection accuracy of the meter counting wheel 9.

The implementation principle of the embodiment is as follows: an operator firstly connects the shuttle to one end of the lead 4 extending out of the tank body 1, puts the shuttle into the pipeline, then hermetically connects the outlet end 13 of the tank body 1 with the pipeline, at the moment, high-pressure gas is blown into the gas inlet pipe 2 through a gas source, and the shuttle pulls the lead 4 to walk in the pipeline until the preset position is reached. When the lead 4 needs to be withdrawn, the driving motor 33 works to drive the spindle 32 and the winding disc 31 to rotate reversely, so that the lead 4 is wound, meanwhile, the transmission unit 38 drives the reciprocating screw rod 36 to rotate, the slider 371 moves back and forth along the length direction of the winding disc 31, and the lead 4 is uniformly distributed on the winding disc 31, so that the winding quality is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a lead wire device is blown to recovery formula, includes jar body (1), intake pipe (2) and the lead wire cloth of setting in jar body (1) of jar body (1) intercommunication put mechanism (3), be equipped with on jar body (1) with the leading-out terminal (13) of pipeline intercommunication, its characterized in that: lead wire is laid mechanism (3) and is included rolling dish (31), rolling dish (31) rotate through main shaft (32) and connect in jar body (1), be equipped with in jar body (1) and be used for driving main shaft (32) pivoted driving motor (33).

2. The retractable blown lead device of claim 1, wherein: the tank is characterized in that a driving wheel (34) which is coaxial with the main shaft (32) is rotatably connected in the tank body (1), a driving wheel (331) is arranged at the output end of the driving motor (33), the driving wheel (34) and the driving wheel (331) are transmitted through a belt (332), a clutch disc (321) is slidably connected to the main shaft (32) along the length direction, a first clamping block (341) and a second clamping block (322) which are clamped with each other are respectively arranged on one side, opposite to the driving wheel (34) and the clutch disc (321), of the driving wheel (34), and a pushing piece (35) used for driving the clutch disc (321) to move towards the driving wheel (34) is arranged in the tank.

3. The retractable blown lead device of claim 2, wherein: the pushing piece (35) comprises a driving cylinder (351) and a shifting rod (352), the shifting rod (352) is connected to the output end of the driving cylinder (351), a shifting groove (3211) is formed in the clutch disc (321) along the periphery, and one end, far away from the driving cylinder (351), of the shifting rod (352) extends into the shifting groove (3211).

4. The retractable blown lead device of claim 3, wherein: be equipped with drag hook (353) on the cylinder body of drive actuating cylinder (351), be equipped with pull ring (354) on the output of drive actuating cylinder (351), be connected with extension spring (355) between drag hook (353) and pull ring (354).

5. The retractable blow-off lead device according to claim 1 or 4, wherein: the internal rotation of jar body (1) is connected with reciprocal lead screw (36), be equipped with slide bar (37) that are on a parallel with reciprocal lead screw (36) in jar body (1), slide bar (37) upward slide is connected with slider (371), slider (371) threaded connection is on reciprocal lead screw (36), be equipped with guide ring (372) on slider (371), lead wire (4) are worn to locate in guide ring (372), be equipped with in jar body (1) and be used for driving reciprocal lead screw (36) pivoted drive unit (38).

6. The retractable blown lead device of claim 5, wherein: the utility model discloses a rice counting pot, including jar body (1), lead wire (4) are contradicted and are equipped with limit ring (1311) respectively along the radial of meter rice wheel (9) in jar body (1) is equipped with meter rice wheel (9), lead wire (4) on meter rice wheel (9), jar body (1) around meter rice wheel (9) both sides.

7. The retractable blown lead device of claim 1, wherein: a sliding sleeve (131) is connected to the leading-out end (13) in a sliding manner, one end of the leading wire (4) penetrating through the sliding sleeve (131) is connected with a stop ring (132), the caliber of the stop ring (132) is larger than the inner diameter of the sliding sleeve (131), and a proximity switch (133) is arranged in the leading-out end (13); when the stop ring (132) abuts against one end, extending out of the wire outlet end (13), of the sliding sleeve (131) and pulls the sliding sleeve (131), the sliding sleeve (131) moves to the position above the proximity switch (133), and the proximity switch (133) controls the driving motor (33) to stop.

8. The retractable blow-off lead set of claim 7, wherein: be equipped with fixed cover (134) in leading-out terminal (13), sliding sleeve (131) are slided and are connected in fixed cover (134), be equipped with reset spring (135) on sliding sleeve (131), reset spring (135)'s both ends are fixed respectively on sliding sleeve (131) and fixed cover (134).