CN113829645A

CN113829645A - Auxiliary device of glass fiber reinforced plastic section bar

Info

Publication number: CN113829645A
Application number: CN202111075237.2A
Authority: CN
Inventors: 温元伟; 陈立果; 梁仕龙; 单立营; 赵阳; 陈华; 郭辉
Original assignee: Beijing Construction Industry Yinlai Frp Products Co ltd
Current assignee: Beijing Construction Industry Yinlai Frp Products Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2021-12-24

Abstract

The utility model relates to a glass steel shaping technical field's auxiliary device of glass steel section bar, it includes the support, be provided with preforming mechanism on the support, the solution box has been installed to the one end that the die head was kept away from to the support, the other box that still is provided with of support, box one side is provided with the pump body, be connected with a feed liquor pipe between the import of the pump body and the box, be connected with the transfer line between the export of the pump body and the solution box, still be provided with between solution box and the box and be used for carrying the interior water conservancy diversion mechanism of box with unrestrained solution. This application has the collection efficiency that improves the adhesive that spills out from the solution box, improves adhesive recycle's effect.

Description

Auxiliary device of glass fiber reinforced plastic section bar

Technical Field

The application relates to the technical field of glass fiber reinforced plastic molding, in particular to an auxiliary device for a glass fiber reinforced plastic profile.

Background

The composite material section bar made by using glass fiber and products thereof as reinforcing materials and synthetic resin as an adhesive and adopting a pultrusion process is called a glass fiber reinforced plastic section bar, also called a glass fiber reinforced plastic section bar; the glass fiber reinforced plastic section has the excellent performances of high strength, corrosion resistance, high insulating strength, aging resistance and the like.

In the pultrusion process of the glass fiber reinforced plastic section bar, an auxiliary device for dipping the glass fiber needs to be used so as to ensure that the synthetic resin as the adhesive is fully immersed in the glass fiber, the prior auxiliary device comprises a bracket, a preforming mechanism for guiding the glass fiber is arranged on the bracket, a solution box is arranged at one end of the bracket far away from a die head, a box body is arranged beside the bracket, a perfusion tube is connected on the box body, and a pump body is connected on the perfusion tube.

When the glass fiber reinforced plastic profile needs to be processed, the bundled glass fibers can pass through the solution box, and then the glass fibers enter a forming die under the guidance of a preforming mechanism to form the glass fiber reinforced plastic profile; and meanwhile, under the continuous operation of the pump body, the adhesive in the box body is quantitatively conveyed into the solution box through the infusion tube, so that the adhesive in the solution box keeps covering the glass fiber.

Along with the long-time processing of glass steel section bar, the bonding glue in the solution box spills out very easily, therefore the staff can place an ascending box that holds of opening below the solution box to the bonding glue that spills down connects greatly, then pours into the box body again and utilizes once more, has consequently reduced staff's work efficiency, makes unnecessary bonding glue spill out from holding the box because of staff's forgetting moreover easily, causes the waste.

Disclosure of Invention

In order to improve the collection efficiency to the adhesive that spills out from the solution box, improve the recycle ratio of adhesive, this application provides a glass steel section's auxiliary device.

The application provides a glass steel section's auxiliary device adopts following technical scheme:

the utility model provides an auxiliary device of glass steel section bar, includes the support, is provided with preforming mechanism on the support, and the solution box has been installed to the one end that the die head was kept away from to the support, and the other box that still is provided with of support, box one side are provided with the pump body, are connected with a feed liquor pipe between the import of the pump body and the box, are connected with the transfer line between the export of the pump body and the solution box, still are provided with between solution box and the box and are used for carrying the interior water conservancy diversion mechanism of box with unrestrained solution.

Through adopting above-mentioned technical scheme, after the pump body carried the solution tank with the adhesive in the box in, the adhesive that the solution tank top spilled over or be located the adhesive that covers on the outer glass fiber of solution tank, will advance the box through automatic inflow again of water conservancy diversion mechanism in to reduced artifical flourishing the degree of difficulty of empting the adhesive, improved the collection efficiency to the adhesive that spills out from the solution box, improved the recycle rate of adhesive.

Optionally, the tank is located below the solution box, the top of the tank is open, the flow guide mechanism includes a flow guide plate disposed between the solution box and the tank, and the liquid outlet end of the flow guide plate is located at an opening at the top of the tank.

Through adopting above-mentioned technical scheme, the adhesive that spills over from the solution tank top or be located the solution tank outer glass fiber on the adhesive will drop on the guide plate automatically, then under the guide effect of guide plate, in the adhesive on the guide plate flowed into the case body through box open-top from guide plate bottom opening again, simple structure has not only reduced the maintenance cost of water conservancy diversion mechanism, has improved the recovery efficiency of adhesive moreover.

Optionally, the guide plate is connected with a plurality of pull ropes, the pull ropes are arranged at intervals along the edge of the guide plate, each pull rope is connected with a hook, and a ring body is fixed on the support corresponding to each hook.

Through adopting above-mentioned technical scheme, under the mutual hook of couple and ring body, install guide plate detachable between solution tank and box through the joint action of stay cord, the staff of being convenient for dismantles the guide plate, has improved the clean efficiency to the guide plate.

Optionally, a filter plate is arranged at an opening at the top of the box body.

Through adopting above-mentioned technical scheme, the arrangement of filter has filterable effect to the glass fiber who mixes in the adhesive, has reduced the possibility that the glass fiber piece enters into the box, and then has reduced the possibility that the pump body is blockked up.

Optionally, a plurality of limiting rods which are clamped with the outer side wall of the box body close to the opening at the top of the box body are fixed on the filter plate.

Through adopting above-mentioned technical scheme, establish at the mutual card of gag lever post and box, install filter detachable at box open-top portion, not only make stable and the box interconnect of filter, the staff of also being convenient for moreover dismantles the filter, improves the clean efficiency of filter.

Optionally, the preforming mechanism comprises a plurality of threading plates arranged on the bracket, and the threading plates are arranged at intervals along the length direction of the bracket.

Through adopting above-mentioned technical scheme, after glass fiber worn out from the solution tank, can pass a plurality of threading boards in proper order again, make glass fiber gather together gradually to progressively carry out preforming to glass fiber, improved the shaping quality of glass fiber section bar.

Optionally, the preforming mechanism further comprises a guide assembly disposed on the bracket and cooperating with the stringing plate.

Through adopting above-mentioned technical scheme, under the cooperation of direction subassembly, make the threading board carry out the pre-setting to glass fiber more easily, improved glass fiber's shaping efficiency.

Optionally, a motor is erected at the bottom of the box body, an output shaft of the motor vertically penetrates upwards into the box body and is coaxially fixed with a stirring shaft, and stirring blades are fixed on the stirring shaft.

Through adopting above-mentioned technical scheme, after auxiliary device work a period, the staff can open the motor, makes the motor drive (mixing) shaft and stirring vane rotate to stir the adhesive in the box, reduce the adhesive in the box and become the possibility of gluing because of stewing, improve the performance of adhesive.

Optionally, a driving gear is fixed on the output shaft of the motor outside the box, a plurality of rotating rods are arranged on the lower surface of the box around the driving gear, the rotating rods vertically penetrate into the box and are rotatably connected with the box, a driven gear matched with the driving gear is coaxially fixed on the rotating rods outside the box, and a helical blade is fixed on the rotating rods inside the box; the spiral blade is sleeved and rotatably connected with a round pipe, the round pipe is erected in the box body, and a space is reserved between the bottom end of the round pipe and the inner bottom of the box body.

Through adopting above-mentioned technical scheme, the motor rotates and drives the driving gear and rotate and then drive driven gear and helical blade and rotate, and under helical blade and pipe mutually supporting, the adhesive that is close to its bottom department in the box will be along the bottom of pipe through helical blade carries the top of pipe, then the adhesive gushes into the box from the top opening of pipe and is close to top department in the box to realize the flow of adhesive from bottom to top in the box, further reduce the possibility that the adhesive in the box becomes sticky because of stewing.

Optionally, a heater is arranged in the rotating rod, and a conductive slip ring connected with the heater is arranged at the bottom end of the rotating rod.

By adopting the technical scheme, under the connection of the conductive slip ring, the heater can regulate the temperature of the adhesive in the box body, so that the temperature of the adhesive is more suitable for the subsequent pultrusion process, and the quality of the glass fiber reinforced plastic profile is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the collection efficiency of the adhesive scattered from the solution box is improved, the adhesive in the box body is conveyed into the solution box through the pump body, the adhesive overflowing from the top of the solution box or the adhesive adhered on the glass fiber positioned outside the solution box can automatically flow into the box body again through the flow guide mechanism, so that the difficulty of manually containing and pouring the adhesive is reduced, and the recycling rate of the adhesive is improved;

2. the efficiency of the recovery of adhesive is improved, through the guide plate, the adhesive that makes the adhesive that spills over from the solution tank top or be located the solution tank outer glass fiber and glue and cover will drop on the guide plate automatically, then under the guide effect of guide plate, the adhesive on the guide plate flows into the box body through box open-top from guide plate bottom opening again, and simple structure has not only reduced the maintenance cost of water conservancy diversion mechanism, the recovery of the adhesive of being convenient for moreover.

Drawings

FIG. 1 is a schematic view of the overall structure of an auxiliary device according to an embodiment of the present application;

FIG. 2 is a schematic structural view showing a preforming mechanism;

FIG. 3 is a schematic structural view of a flow guide mechanism;

FIG. 4 is a schematic structural view showing a stirring and heating mechanism;

fig. 5 is a sectional view showing the structure of the case.

Description of reference numerals: 1. a support; 11. a side lever; 12. a connecting rod; 13. a suspension rod; 14. an extension rod; 15. a base plate; 2. a fixing assembly; 21. a clamping bar; 211. a jack; 22. a bolt; 23. inserting a rod; 3. a preforming mechanism; 31. a U-shaped frame; 32. a threading plate; 33. a guide assembly; 331. a guide bar; 332. an upper ram; 333. a first resisting rod; 334. a second resisting rod; 335. a fixing member; 4. a solution box; 5. a box body; 6. a fluid delivery assembly; 61. a pump body; 62. a liquid inlet pipe; 63. a three-way pipe; 64. a transfusion tube; 7. a flow guide mechanism; 71. a baffle; 72. pulling a rope; 73. hooking; 74. a ring body; 75. a filter plate; 76. a limiting rod; 8. a stirring and heating mechanism; 81. a motor; 82. a stirring shaft; 821. a stirring blade; 83. a driving gear; 84. rotating the rod; 85. a driven gear; 86. a helical blade; 87. a circular tube; 88. a rod body; 89. a conductive slip ring; 9. a die head.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses auxiliary device of glass steel section bar. Referring to fig. 1, the auxiliary device for the glass fiber reinforced plastic profile comprises a support 1, the support 1 is horizontally arranged, one end of the support 1 is provided with a fixing component 2 for connecting the support 1 and a forming die head 9, a preforming mechanism 3 is arranged on the support 1, two solution boxes 4 are erected at one end, away from the die head 9, of the support 1, a box 5 with an opening at the top is erected on the ground right below the support 1, an adhesive is filled in the box 5, the section size of the box 5 is gradually increased from bottom to top, a liquid conveying component 6 for conveying the adhesive in the box 5 to the two solution boxes 4 is arranged at one side, away from the die head 9, of the box 5, a flow guide mechanism 7 for conveying the scattered solution into the box 5 is arranged between the solution boxes 4 and 5, and a stirring and heating mechanism 8 for stirring and heating the adhesive in the box 5 is further arranged on the box 5.

Referring to fig. 2, the bracket 1 includes two side rods 11 vertically arranged, the two side rods 11 are respectively located at two sides of the die head 9, a horizontal connecting rod 12 is fixed at the top end of each side rod 11, the connecting rod 12 and the two side rods 11 jointly form a door frame-shaped structure, two suspension rods 13 are respectively fixed at one side of each side rod 11 departing from the forming die, the suspension rods 13 are horizontally arranged, the two suspension rods 13 on each side rod 11 are arranged at intervals up and down, an extending rod 14 is fixed on each suspension rod 13 at the top for installing the flow guide mechanism 7, and a bottom plate 15 is fixed on each suspension rod 13 below for installing two solution tanks.

Referring to fig. 3, the infusion assembly 6 comprises a pump body 61 arranged on one side of the box body 5, which is far away from the forming die, the pump body 61 can be placed on the ground or erected, an inlet of the pump body 61 is connected with a liquid inlet pipe 62, the other end of the liquid inlet pipe 62 is connected with one side of the box body 5, which is close to the bottom of the box body 5, an outlet of the pump body 61 is connected with a three-way pipe 63, the other two openings of the three-way pipe 63 are respectively connected with an infusion pipe 64, and the two infusion pipes 64 are respectively connected with two solution tanks; when the glass fiber penetrates into the solution tank from one side of the solution tank and penetrates out of the solution tank towards one side of the forming die, the pump body 61 continuously operates to convey the adhesive in the box body 5 into the solution tank through the liquid inlet pipe 62, the three-way pipe 63 and the liquid conveying pipe 64, so that the adhesive in the solution tank keeps covering the glass fiber.

Referring to fig. 1, the fixing assembly 2 includes a clamping bar 21 fixed on each side bar 11, the two clamping bars 21 are located on one side of each side bar 11 away from the suspension rod 13, and the clamping bars 21 are arranged perpendicular to the side bars 11, when the two side bars 11 are located on both sides of the die head 9, the two clamping bars 21 are also located on both sides of the die head 9, a bolt 22 is arranged on one side of each clamping bar 21 away from the die head 9, an end of the bolt 22 penetrates through the clamping bar 21 and is connected to the die head 9 through a thread, a jack 211 is further formed in each clamping bar 21, an insert rod 23 is commonly penetrated in each jack 211 and on the die head 9, and under the synergistic effect of the insert rod 23 and the bolt 22, the two clamping bars 21 are fixed to the die head 9, and further the side bars 11 and the suspension rods 13 are fixed to the die head 9.

Referring to fig. 2, the preforming mechanism 3 includes three U-shaped frames 31, the opening of each U-shaped frame 31 is upward, the suspension rods 13 are perpendicular to the plane of the U-shaped frame 31, the three U-shaped frames 31 are arranged at intervals along the length direction of the suspension rods 13, each U-shaped frame 31 is fixed to the four suspension rods 13, a sliding chute is formed in the inner side surface of each U-shaped frame 31, the sliding chutes are communicated with the upper surfaces of the U-shaped frames 31, a threading plate 32 is installed in each sliding chute of each U-shaped frame 31, and the glass fibers penetrate through the three threading plates 32 in sequence after penetrating out of the solution tank, so that the glass fibers are preformed step by step.

Referring to fig. 2, a guide assembly 33 is additionally provided on the suspension rods 13, the guide assembly 33 includes one guide rod 331 provided on each of the two top suspension rods 13, the guide rods 331 are vertically arranged with the two guide rods 331 located between the top two suspension rods 13, and two guide rods 331 are located between the two threading plates 32 on the side far away from the die head 9, the guide rods 331 and the suspension rods 13 are mutually fixed with the corresponding suspension rods 13 through fixing pieces 335, an upper ram 332 is arranged between the two threading plates 32 on one side close to the die head 9, two first abutting rods 333 are arranged on one side of the upper ram 332 away from the die head 9, the two first abutting rods 333 are respectively arranged on the two suspension rods 13 positioned below, two second resisting rods 334 are arranged on one side of the upper ram 332 facing the die head 9, the two second resisting rods 334 are respectively arranged on the two suspension rods 13 located below, and the upper ram 332, the first resisting rods 333 and the second resisting rods 334 are also fixed with the corresponding suspension rods 13 through fixing pieces 335; the guide rod 331, the upper ram 332, the first abutting rod 333, the second abutting rod 334 and the threading plate 32 are matched to facilitate the presetting of the glass fiber.

Referring to fig. 3, the flow guiding mechanism 7 includes a flow guiding plate 71 disposed between the solution tank and the tank 5, the flow guiding plate 71 is disposed in a downward inclination from one end far away from the die head 9 to one end close to the die head 9, the bottom end of the flow guiding plate 71 is located above the top opening of the tank 5, and other edges of the flow guiding plate 71 except the bottom edge are provided with upward flanges; correspond on the turn-ups and respectively be fixed with two stay cords 72 that the interval set up in every extension rod 14 department, the other end of every stay cord 72 respectively is connected with a couple 73, and one side that every extension rod 14 deviates from another extension rod 14 respectively is fixed with two interval arrangement's ring body 74, and couple 73 on four stay cords 72 respectively with the mutual hook of the ring body 74 that corresponds.

When the adhesive in the solution tank overflows from the solution tank or the adhesive adhered to the glass fiber drips from the glass fiber, the adhesive can fall on the guide plate 71, and then the adhesive on the guide plate 71 is drained back to the tank body 5 from the opening at the bottom end of the guide plate 71 under the guidance of the inclined arrangement of the guide plate 71, so that the difficulty of manually containing and dumping the adhesive is reduced, the collection efficiency of the adhesive scattered from the solution box 4 is improved, and the recovery utilization rate of the adhesive is improved.

Referring to fig. 3, a horizontal filter plate 75 is further arranged at the opening at the top of the box body 5, the outer side surface of the filter plate 75 is aligned with the outer edge of the top of the box body 5, a plurality of limiting rods 76 which are vertically arranged downwards are fixed on the outer side surface of the filter plate 75, the plurality of limiting rods 76 are arranged at intervals along the periphery of the filter plate 75, and when the filter plate 75 is covered on the box body 5, the parts of the plurality of limiting rods 76 which are positioned below the bottom surface of the filter plate 75 are clamped at the periphery of the top of the box body 5, so that the filter plate 75 and the box body 5 are mutually detachably connected; when the adhesive carries the glass fiber debris to drop from the deflector 71 onto the filter plate 75, the filter plate 75 can allow the adhesive to pass through to retain the glass fiber, thereby reducing the possibility of the glass fiber debris entering the tank 5 and further reducing the possibility of the pump body 61 being blocked.

Referring to fig. 4 and 5, the stirring and heating mechanism 8 includes a motor 81 erected at the bottom of the box 5, the motor 81 is located at the bottom of the box 5 near the center of the lower surface of the box 5, an output shaft of the motor 81 vertically penetrates upwards into the box 5 and is coaxially fixed with a stirring shaft 82, stirring blades 821 are fixed on the stirring shaft 82, a driving gear 83 is further coaxially fixed on the output shaft of the motor 81, the driving gear 83 is located outside the box 5, four rotating rods 84 are further arranged around the stirring shaft 82 in the box 5, the axis of the rotating rods 84 is parallel to the axis of the stirring shaft 82, the four rotating rods 84 are uniformly distributed around the stirring shaft 82 and the stirring blades 821, and the bottom ends of the rotating rods 84 penetrate out of the box 5 and are rotatably connected with the box 5.

Referring to fig. 5, each rotating rod 84 is coaxially fixed with a driven gear 85, the driven gear 85 is located outside the box 5 and is matched with the driving gear 83, each rotating rod 84 is fixed with a helical blade 86 inside the box 5, the helical blade 86 is coaxially sleeved with a round tube 87, the inner peripheral surface of the round tube 87 is attached to the outer peripheral surface of the helical blade 86, a gap is reserved between the bottom end of the round tube 87 and the inner bottom of the box 5, and a plurality of rod bodies 88 are fixed between the lower surface of the round tube 87 and the inner bottom of the box 5.

The staff can open motor 81 regularly, make motor 81 drive (mixing) shaft 82 and stirring vane 821 rotate, in order to stir the adhesive in the box 5, and driving gear 83 will drive driven gear 85 and rotate, and then make dwang 84 and helical blade 86 rotate, under helical blade 86 and circular tube 87 mutually support, the adhesive that is close to bottom department in the box 5 will be along the bottom of circular tube 87 through helical blade 86 transport the top of circular tube 87, then the adhesive gushes into in the box 5 from the top opening of circular tube 87 and is close to top department, thereby realize the interior flow of upper and lower adhesive of box 5 and the stirring of each level adhesive in the box 5, reduce the adhesive in the box 5 and become sticky possibility because of stewing, improve the performance of adhesive.

Referring to fig. 5, the rotating rods 84 are hollow, a heater is further installed in each rotating rod 84, a conductive slip ring 89 is installed at the bottom end of the rotating rod 84, one end of the conductive slip ring 89 facing the rotating rod 84 is electrically connected with the heater, and the other end of the conductive slip ring 89 can be connected with a municipal circuit or a storage battery; when the adhesive in the box body 5 is stirred, the worker can also start the heater to adjust the temperature of the adhesive, so that the adhesive is more suitable for the subsequent pultrusion process.

The implementation principle of the auxiliary device for the glass fiber reinforced plastic section bar in the embodiment of the application is as follows: when the adhesive in the solution tank overflows from the solution tank or the adhesive adhered to the glass fiber drips from the glass fiber, the adhesive can fall on the guide plate 71 below the solution tank, and then under the drainage of the guide plate 71, the adhesive can be drained back to the tank body 5 from the opening at the bottom end of the guide plate 71, so that the automatic recycling of the adhesive is finally realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an auxiliary device of glass steel section bar which characterized in that: the device comprises a support (1), wherein a preforming mechanism (3) is arranged on the support (1), a solution box (4) is installed at one end, away from a die head (9), of the support (1), a box body (5) is further arranged beside the support (1), a pump body (61) is arranged on one side of the box body (5), a liquid inlet pipe (62) is connected between an inlet of the pump body (61) and the box body (5), a liquid conveying pipe (64) is connected between an outlet of the pump body (61) and the solution box (4), and a flow guide mechanism (7) used for conveying a scattered solution into the box body (5) is further arranged between the solution box (4) and the box body (5).

2. An auxiliary device of a glass fiber reinforced plastic profile according to claim 1, wherein: the box (5) is located below the solution box (4), the top of the box (5) is arranged in an opening mode, the flow guide mechanism (7) comprises a flow guide plate (71) arranged between the solution box (4) and the box (5), and the liquid outlet end of the flow guide plate (71) is located at the opening at the top of the box (5).

3. An auxiliary device of a glass fiber reinforced plastic profile according to claim 2, wherein: the guide plate (71) is connected with a plurality of pull ropes (72), the pull ropes (72) are arranged at intervals along the edge of the guide plate (71), each pull rope (72) is connected with a hook (73), and a ring body (74) is fixed on the support (1) corresponding to each hook (73).

4. An auxiliary device of a glass fiber reinforced plastic profile according to claim 2, wherein: a filter plate (75) is arranged at the opening at the top of the box body (5).

5. An auxiliary device of glass fiber reinforced plastic profile as claimed in claim 4, wherein: and a plurality of limiting rods (76) which are mutually clamped with the outer side wall of the box body (5) close to the opening at the top of the box body (5) are fixed on the filter plate (75).

6. An auxiliary device of a glass fiber reinforced plastic profile according to claim 1, wherein: the preforming mechanism (3) comprises a plurality of threading plates (32) arranged on the support (1), and the threading plates (32) are arranged at intervals along the length direction of the support (1).

7. An auxiliary device of a glass fiber reinforced plastic profile according to claim 6, wherein: the preforming mechanism (3) further comprises a guide assembly (33) which is arranged on the support (1) and is matched with the threading plate (32) in a cooperation mode.

8. An auxiliary device of a glass fiber reinforced plastic profile according to claim 1, wherein: a motor (81) is erected at the bottom of the box body (5), an output shaft of the motor (81) vertically penetrates upwards into the box body (5) and is coaxially fixed with a stirring shaft (82), and stirring blades (821) are fixed on the stirring shaft (82).

9. An auxiliary device of a glass fiber reinforced plastic profile according to claim 8, wherein: a driving gear (83) is fixed on the output shaft of the motor (81) and positioned outside the box body (5), a plurality of rotating rods (84) are arranged on the lower surface of the box body (5) and positioned around the driving gear (83), the rotating rods (84) vertically penetrate into the box body (5) upwards and are rotatably connected with the box body (5), a driven gear (85) matched with the driving gear (83) is coaxially fixed on the rotating rods (84) and positioned outside the box body (5), and a helical blade (86) is fixed on the rotating rods (84) and positioned inside the box body (5); the spiral blade (86) is sleeved and rotatably connected with a round pipe (87), the round pipe (87) is erected in the box body (5), and a gap is reserved between the bottom end of the round pipe (87) and the inner bottom of the box body (5).

10. An auxiliary device of a glass fiber reinforced plastic profile according to claim 9, wherein: the heater is arranged in the rotating rod (84), and the bottom end of the rotating rod (84) is provided with a conductive sliding ring (89) connected with the heater.