Premixing equipment suitable for polyethylene antibacterial film production

Abstract

The utility model discloses premixing equipment suitable for polyethylene antibacterial film production. The premixing equipment comprises a stirring barrel, wherein a slide slope is fixedly arranged at the bottom of the stirring barrel; the stirring mechanism comprises a motor, a first rotating shaft, a stirring long rod, a stirring short rod and a first transmission assembly; the motor is fixedly connected to the top surface of the stirring barrel, the first rotating shaft is fixedly connected to the power output end of the motor, the two first transmission assemblies are fixed to the motor at equal intervals, and the side wall of each first transmission assembly is symmetrically and rotationally connected with two stirring long rods; the plurality of short stirring rods are fixedly arranged on the side wall of the long stirring rod at equal intervals. The stirring dead angle is reduced through the stirring mechanism, the mixing effect is improved, the stirring dead angle is further reduced through the anti-blocking mechanism, and meanwhile particle blocking during discharging is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyethylene film production technical field, concretely is a kind of premixing equipment for polyethylene antibacterial film production. BACKGROUND

[0002] The preparation of antibacterial polyethylene film mainly relies on the addition of antibacterial agents in polyethylene base material. Antibacterial agents can be combined with polyethylene base material through physical adsorption, chemical bonding or ion exchange, etc. to form a composite material with antibacterial function. Currently, commonly used antibacterial agents include inorganic antibacterial agents (such as silver ions, zinc ions, etc.) and organic antibacterial agents (such as quaternary ammonium salts, halogenated phenols, etc.).

[0003] Before producing polyethylene antibacterial film, a certain weight of polyethylene particles needs to be placed in a fixed stirring barrel, and then additives such as antibacterial agents are placed in the stirring barrel according to the blending ratio, and stirring and mixing are carried out by using stirring paddles. The stirring paddles can only be stirred horizontally, and dead angles are prone to occur, especially the polyethylene particles at the bottom of the stirring barrel are prone to accumulate, and cannot be uniformly stirred with the antibacterial agents, so the mixing effect is poor. SUMMARY

[0004] The purpose of the utility model is to provide a premixing equipment for polyethylene antibacterial film production to solve the problems raised in the above background technology. To solve the above technical problems, the utility model is realized by the following technical scheme:

[0005] The utility model is a premixing equipment for polyethylene antibacterial film production, comprising:

[0006] The stirring barrel is fixedly provided with a landslide at the bottom.

[0007] The stirring mechanism comprises a motor, a first rotating shaft, a stirring long rod, a stirring short rod and a first transmission assembly.

[0008] The motor is fixedly connected to the top surface of the stirring barrel, the first rotating shaft is fixedly connected to the power output end of the motor, and the first transmission assembly has two and is equidistantly fixed on the first rotating shaft. Each first transmission assembly is symmetrically connected with two stirring long rods on the side wall, and the stirring short rod has multiple and is equidistantly fixed on the side wall of the stirring long rod.

[0009] Further, the first transmission assembly comprises a first fixed tube, a first rotating tube, a first bevel gear and a second bevel gear.

[0010] The first fixed pipe is fixedly connected to the side wall of the first rotating shaft, the first rotating pipe is two and symmetrically fixed to the side wall of the first fixed pipe, each first rotating pipe is rotationally connected with a stirring long rod, the first bevel gear is fixedly connected to the side wall of the first rotating shaft, the stirring long rod is fixedly connected with a second bevel gear at the end thereof, and the first bevel gear is engaged with the second bevel gear.

[0011] Further, a feeding pipe is fixedly connected to one side of the top of the stirring barrel, one end of the feeding pipe is fixedly connected with a second metering valve, and three quantitative feeding mechanisms are fixedly connected to the top of the stirring barrel, the quantitative feeding mechanism comprises a storage tank, a first metering valve and a feeding pipe.

[0012] The storage tank is fixed with a support, the support is fixedly connected to the top of the stirring barrel, the first metering valve is fixed to the bottom of the storage tank, and the feeding pipe is fixedly connected with the first metering valve at the bottom and the top of the stirring barrel at two ends thereof.

[0013] Further, the bottom of the landslide is provided with a discharging hole, the outer opening of the discharging hole is fixed with a discharging pipe, and the bottom of the discharging pipe is fixed with a discharging valve.

[0014] Further, it further comprises an anti-blocking mechanism, the anti-blocking mechanism comprises a second rotating shaft, a second transmission assembly, a first anti-blocking long rod, a first anti-blocking short rod, a third transmission assembly, a second anti-blocking long rod, a second anti-blocking short rod and a bend pipe.

[0015] The second rotating shaft is fixedly connected to the bottom of the first rotating shaft, the second transmission assembly is fixed to the upper end of the side wall of the second rotating shaft, the first anti-blocking long rod is rotationally connected to the side wall of the second transmission assembly, the first anti-blocking short rod is a plurality of and equidistantly fixedly connected to the side wall of the first anti-blocking long rod, the third transmission assembly is fixed to the lower end of the side wall of the second rotating shaft, the second anti-blocking long rod is rotationally connected to the side wall of the third transmission assembly, the second anti-blocking short rod is a plurality of and equidistantly fixedly connected to the side wall of the second anti-blocking long rod, and the bend pipe is rotationally connected with the end of the first anti-blocking long rod and the end of the second anti-blocking long rod at two ends thereof.

[0016] Further, the second transmission assembly comprises a second fixed pipe, a second rotating pipe, a third bevel gear and a fourth bevel gear.

[0017] The second fixed pipe is fixedly connected to the upper end of the side wall of the second rotating shaft, the second rotating pipe is fixedly connected to the side wall of the second fixed pipe, the first anti-blocking long rod is rotationally connected in the second rotating pipe, the third bevel gear is fixedly connected to the side wall of the second fixed pipe, the fourth bevel gear is fixedly connected to the end of the first anti-blocking long rod, and the third bevel gear is engaged with the fourth bevel gear.

[0018] Further, the third transmission assembly comprises a third fixed pipe, a third rotating pipe, a fifth bevel gear and a sixth bevel gear.

[0019] The third fixed tube is fixedly connected at the lower end of the second rotating shaft side wall, the third rotating tube is fixedly connected at the side wall of the third fixed tube, the second anti-blocking long rod is rotatably connected in the third rotating tube, the fifth helical gear is fixedly connected at the second rotating shaft side wall, the sixth helical gear is fixedly connected at the end of the second anti-blocking long rod, and the fifth helical gear is engaged with the sixth helical gear.

[0020] The utility model has the following beneficial effects:

[0021] The utility model discloses, through motor drive first rotating shaft rotation, first rotating shaft drive stirring long rod revolves around first rotating shaft, and stirring long rod revolves and stirs raw materials horizontally, and first rotating shaft rotation drives stirring long rod to rotate through first transmission assembly, and stirring long rod rotates and drives stirring short tube to revolve around stirring long rod, and stirring short rod revolves and stirs raw materials vertically, makes raw materials of stirring barrel bottom to turn to upper layer, reduces the dead angle of stirring, improves mixing effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to use the drawing of the embodiment to introduce briefly, obviously, the drawing in the following description only is some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0023] Figure 1 It is the first overall structure schematic diagram of the utility model;

[0024] Figure 2 It is the internal structure schematic diagram of the utility model;

[0025] Figure 3 It is the stirring mechanism structure schematic diagram of the utility model;

[0026] Figure 4 It is the A part structure schematic diagram in the utility model Figure 3 ;

[0027] Figure 5 It is the B part structure schematic diagram in the utility model Figure 3 .

[0028] In the drawing, the component list represented by each sign is as follows:

[0029] 100, stirring barrel;110, support leg;120, discharge pipe;130, discharge valve;140, landslide;141, discharge hole;

[0030] 210, motor;220, first rotating shaft;230, stirring long rod;240, stirring short rod;

[0031] 250, first transmission assembly; 251, first fixed tube; 252, first rotating tube; 253, first bevel gear; 254, second bevel gear;

[0032] 310, storage tank; 311, support; 320, first metering valve; 330, feeding pipe; 340, feeding pipe; 350, second metering valve;

[0033] 410, second rotating shaft; 420, second transmission assembly; 430, first anti-blocking long rod; 440, first anti-blocking short rod; 450, third transmission assembly; 460, second anti-blocking long rod; 470, second anti-blocking short rod; 480, elbow pipe;

[0034] 421, second fixed tube; 422, second rotating tube; 423, third bevel gear; 424, fourth bevel gear;

[0035] 451, third fixed tube; 452, third rotating tube; 453, fifth bevel gear; 454, sixth bevel gear. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0037] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0038] Please refer to Figures 1-5 The present application is a kind of pre-mixed equipment for polyethylene antibacterial film production, comprising:

[0039] The stirring barrel 100 is fixedly provided with a landslide 140 at the bottom.

[0040] The stirring mechanism comprises a motor 210, a first rotating shaft 220, a stirring long rod 230, a stirring short rod 240 and a first transmission assembly 250.

[0041] The motor 210 is fixedly connected to the top surface of the stirring barrel 100, the first rotating shaft 220 is fixedly connected to the power output end of the motor 210, the first transmission assembly 250 is two and equidistantly fixed on the first rotating shaft 220, each first transmission assembly 250 is symmetrically and rotatably connected with two stirring long rods 230 on the side wall, the stirring short rod 240 is multiple and equidistantly fixed on the side wall of the stirring long rod 230, the motor 210 is started, the motor 210 drives the first rotating shaft 220 to rotate, the first rotating shaft 220 drives the stirring long rod 230 to revolve around the motor 210, the first rotating shaft 220 drives the stirring long rod 230 to rotate around the first transmission assembly 250, and the stirring long rod 230 drives the stirring short rod 240 to revolve around the stirring long rod 230, so that the raw materials at the bottom of the stirring barrel 100 are stirred to the upper layer, the dead angle of stirring is reduced, and the mixing effect is improved.

[0042] The first transmission assembly 250 comprises a first fixed pipe 251, a first rotating pipe 252, a first bevel gear 253 and a second bevel gear 254.

[0043] The first fixed pipe 251 is fixedly connected to the side wall of the first rotating shaft 220, the first rotating pipe 252 is two and symmetrically fixed on the side wall of the first fixed pipe 251, each first rotating pipe 252 is rotatably connected with the stirring long rod 230, the first bevel gear 253 is fixedly connected to the side wall of the first rotating shaft 220, the stirring long rod 230 is fixedly connected with the second bevel gear 254 at the end, the first bevel gear 253 is engaged with the second bevel gear 254, the first rotating shaft 220 drives the first bevel gear 253 to rotate, the first bevel gear 253 drives the second bevel gear 254 to rotate, and the second bevel gear 254 drives the stirring long rod 230 to rotate, so that the function of the self-rotation of the stirring long rod 230 is realized.

[0044] As shown in Figure 1 The stirring barrel 100 is fixedly connected with the feeding pipe 340 on one side of the top, polyethylene particles are added from the feeding pipe 340, one end of the feeding pipe 340 is fixedly connected with the second metering valve 350, the amount of polyethylene added is controlled through the second metering valve 350, and the stirring barrel 100 is fixedly connected with three quantitative feeding mechanisms on the top, the quantitative feeding mechanism comprises a storage tank 310, a first metering valve 320 and a feeding pipe 330.

[0045] The storage tank 310 is fixedly connected with the support 311 on the bottom, the support 311 is fixedly connected to the top of the stirring barrel 100, the first metering valve 320 is fixed on the bottom of the storage tank 310, and the feeding pipe 330 is fixedly connected with the bottom of the first metering valve 320 and the top of the stirring barrel 100 at both ends. Various additives are stored in the storage tank 310, and the amount of the additives is accurately controlled through the feeding pipe 330 according to the proportioning;

[0046] As shown in Figures 1-2As shown, the bottom of the landslide 140 is provided with a discharge hole 141, the outer opening of the discharge hole 141 is fixed with a discharge pipe 120, the bottom of the discharge pipe 120 is fixed with a discharge valve 130, the raw material is stirred, then the discharge valve 130 is opened, the raw material slides out of the discharge hole 141 along the landslide 140 and is discharged from the discharge pipe 120;

[0047] Working principle: after a certain amount of polyethylene particles is accurately added through the second metering valve 350, the additive stored in the storage tank 310 is accurately added according to the proportion through the first metering valve 320, then the motor 210 is started, the motor 210 drives the first rotating shaft 220 to rotate, the first rotating shaft 220 drives the stirring long rod 230 to revolve around the motor 210, the rotation of the first rotating shaft 220 drives the first bevel gear 253 to rotate, the first bevel gear 253 drives the second bevel gear 254 to rotate, the second bevel gear 254 drives the stirring long rod 230 to rotate to make the stirring long rod 230 rotate, the rotation of the stirring long rod 230 drives the stirring short rod 240 to revolve around the stirring long rod 230, so that the raw material at the bottom of the stirring barrel 100 is turned to the upper layer, the dead angle of stirring is reduced, and the mixing effect is improved;

[0048] Please refer to Figures 1-5 As shown, the embodiment is based on the above-mentioned embodiment, and further comprises:

[0049] The anti-blocking mechanism comprises a second rotating shaft 410, a second transmission assembly 420, a first anti-blocking long rod 430, a first anti-blocking short rod 440, a third transmission assembly 450, a second anti-blocking long rod 460, a second anti-blocking short rod 470, and a bent pipe 480.

[0050] The second rotating shaft 410 is fixedly connected at the bottom of the first rotating shaft 220, the second transmission assembly 420 is fixedly connected at the upper end of the side wall of the second rotating shaft 410, the first anti-blocking long rod 430 is rotatably connected at the side wall of the second transmission assembly 420, the first anti-blocking short rod 440 is a plurality of and equidistantly fixedly connected at the side wall of the first anti-blocking long rod 430, the third transmission assembly 450 is fixedly connected at the lower end of the side wall of the second rotating shaft 410, the second anti-blocking long rod 460 is rotatably connected at the side wall of the third transmission assembly 450, the second anti-blocking short rod 470 is a plurality of and equidistantly fixedly connected at the side wall of the second anti-blocking long rod 460, the curved pipe 480 is rotatably connected at the end of the first anti-blocking long rod 430 and the end of the second anti-blocking long rod 460 respectively, the first rotating shaft 220 drives the second rotating shaft 410 to rotate, the second rotating shaft 410 drives the first anti-blocking long rod 430 to revolve around the second rotating shaft 410, the second rotating shaft 410 drives the first anti-blocking long rod 430 to rotate by the second transmission assembly 420, the first anti-blocking long rod 430 drives the first anti-blocking short rod 440 to rotate, the second rotating shaft 410 drives the second anti-blocking long rod 460 to revolve around the second rotating shaft 410, the second rotating shaft 410 drives the second anti-blocking long rod 460 to rotate by the third transmission assembly 450, the second anti-blocking long rod 460 drives the second anti-blocking short rod 470 to revolve around the second anti-blocking long rod 460, the particles at the landslide 140 are horizontally turned over by the revolution of the first anti-blocking long rod 430 and the second anti-blocking long rod 460, the particles at the landslide 140 are vertically turned over by the revolution of the first anti-blocking short rod 440 and the second anti-blocking short rod 470, the stirring dead angle is further reduced, the particles are prevented from gathering and blocking at the discharge hole 141 by the rotation and turning over of the raw materials, the two rotating first anti-blocking long rods 430 and second anti-blocking long rods 460 are connected together by the curved pipe 480, and the overall stability of the structure is increased;

[0051] The second transmission assembly 420 comprises a second fixed pipe 421, a second rotating pipe 422, a third helical gear 423 and a fourth helical gear 424.

[0052] The second fixed pipe 421 is fixedly connected at the upper end of the side wall of the second rotating shaft 410, the second rotating pipe 422 is fixedly connected at the side wall of the second fixed pipe 421, the first anti-blocking long rod 430 is rotatably connected in the second rotating pipe 422, the third helical gear 423 is fixedly connected at the side wall of the second fixed pipe 421, the fourth helical gear 424 is fixedly connected at the end of the first anti-blocking long rod 430, the third helical gear 423 is engaged with the fourth helical gear 424, the second rotating shaft 410 drives the third helical gear 423 to rotate, the third helical gear 423 drives the fourth helical gear 424 to rotate, the fourth helical gear 424 drives the first anti-blocking long rod 430 to rotate, and the self-rotation function of the first anti-blocking long rod 430 is realized.

[0053] The third transmission assembly 450 comprises a third fixed pipe 451, a third rotating pipe 452, a fifth helical gear 453 and a sixth helical gear 454.

[0054] The third fixed tube 451 is fixedly connected to the lower end of the side wall of the second rotating shaft 410, the third rotating tube 452 is fixedly connected to the side wall of the third fixed tube 451, the second anti-blocking long rod 460 is rotatably connected in the third rotating tube 452, the fifth bevel gear 453 is fixedly connected to the side wall of the second rotating shaft 410, the sixth bevel gear 454 is fixedly connected to the end of the second anti-blocking long rod 460, the fifth bevel gear 453 is engaged with the sixth bevel gear 454, the second rotating shaft 410 drives the fifth bevel gear 453 to rotate, the fifth bevel gear 453 drives the sixth bevel gear 454 to rotate, the sixth bevel gear 454 drives the second anti-blocking long rod 460 to rotate, and the self-rotation function of the second anti-blocking long rod 460 is realized;

[0055] Working principle: the first rotating shaft 220 drives the second rotating shaft 410 to rotate, the second rotating shaft 410 drives the first anti-blocking long rod 430 to revolve around the second rotating shaft 410, the second rotating shaft 410 drives the third bevel gear 423 to rotate, the third bevel gear 423 drives the fourth bevel gear 424 to rotate, the fourth bevel gear 424 drives the first anti-blocking long rod 430 to rotate, the self-rotation function of the first anti-blocking long rod 430 is realized, the self-rotation of the first anti-blocking long rod 430 drives the first anti-blocking short rod 440 to rotate, the second rotating shaft 410 drives the second anti-blocking long rod 460 to revolve around the second rotating shaft 410, the second rotating shaft 410 drives the fifth bevel gear 453 to rotate, the fifth bevel gear 453 drives the sixth bevel gear 454 to rotate, the sixth bevel gear 454 drives the second anti-blocking long rod 460 to rotate, the self-rotation function of the second anti-blocking long rod 460 is realized, the self-rotation of the second anti-blocking long rod 460 drives the second anti-blocking short rod 470 to revolve around the second anti-blocking long rod 460, the particles at the landslide 140 are horizontally turned over through the revolution of the first anti-blocking long rod 430 and the second anti-blocking long rod 460, the particles at the landslide 140 are vertically turned over through the revolution of the first anti-blocking short rod 440 and the second anti-blocking short rod 470, and the stirring dead angle is further reduced, and the raw materials are turned over through rotation, so that the particles are prevented from gathering and blocking at the discharge hole 141.

[0056] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation manner. Obviously, according to the content of the description, many modifications and changes can be made. The description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and use the utility model. The utility model is limited by the claims and the whole scope and equivalents.

Claims

1. A premixing device suitable for the production of polyethylene antibacterial films, characterized in that, Include: The stirring barrel (100) is fixedly provided with a landslide (140) at the bottom; The stirring mechanism includes a motor (210), a first rotating shaft (220), a stirring long rod (230), a stirring short rod (240), and a first transmission assembly (250); The motor (210) is fixedly connected to the top surface of the stirring barrel (100), the first rotating shaft (220) is fixedly connected to the power output end of the motor (210), and the first transmission assembly (250) is fixedly connected to the first rotating shaft (220) in two equal distances. Each first transmission assembly (250) is symmetrically and rotatably connected with two stirring long rods (230) on the side wall. The stirring short rod (240) is fixedly arranged on the side wall of the stirring long rod (230) in multiple equal distances.

2. The pre-mixing apparatus for producing polyethylene antibacterial film according to claim 1, characterized in that: The first transmission assembly (250) includes a first fixed tube (251), a first rotating tube (252), a first helical gear (253), and a second helical gear (254); The first fixed tube (251) is fixedly connected to the side wall of the first rotating shaft (220), the first rotating tube (252) is fixedly connected to the side wall of the first fixed tube (251) in two equal distances, each first rotating tube (252) is rotatably connected with a stirring long rod (230), the first helical gear (253) is fixedly connected to the side wall of the first rotating shaft (220), the stirring long rod (230) is fixedly connected with the second helical gear (254) at the end, and the first helical gear (253) is engaged with the second helical gear (254).

3. The pre-mixing apparatus for producing polyethylene antibacterial film according to claim 1, characterized in that: The top side of the stirring barrel (100) is fixedly connected with a feeding pipe (340), one end of the feeding pipe (340) is fixedly connected with a second metering valve (350), and the top of the stirring barrel (100) is fixedly connected with three quantitative feeding mechanisms. The quantitative feeding mechanism includes a storage tank (310), a first metering valve (320), and a feeding pipe (330); The bottom of the storage tank (310) is fixedly provided with a support (311), the support (311) is fixedly connected to the top of the stirring barrel (100), the first metering valve (320) is fixedly connected to the bottom of the storage tank (310), and the feeding pipe (330) is fixedly connected to the bottom of the first metering valve (320) and the top of the stirring barrel (100) respectively.

4. The pre-mixing apparatus for producing polyethylene antibacterial film according to claim 1, characterized in that: The bottom of the landslide (140) is provided with a discharge hole (141), the outer opening of the discharge hole (141) is fixedly provided with a discharge pipe (120), and the bottom of the discharge pipe (120) is fixedly provided with a discharge valve (130).

5. The pre-mixing apparatus for producing polyethylene antibacterial film according to claim 2, characterized in that: It also includes an anti-blocking mechanism, which includes a second rotating shaft (410), a second transmission assembly (420), a first anti-blocking long rod (430), a first anti-blocking short rod (440), a third transmission assembly (450), a second anti-blocking long rod (460), a second anti-blocking short rod (470), and an elbow pipe (480); The second rotating shaft (410) is fixedly connected at the bottom of the first rotating shaft (220), the second transmission assembly (420) is fixed at the upper end of the side wall of the second rotating shaft (410), the first anti-blocking long rod (430) is rotatably connected to the side wall of the second transmission assembly (420), the first anti-blocking short rod (440) is fixedly connected to the side wall of the first anti-blocking long rod (430) at equal intervals, the third transmission assembly (450) is fixed at the lower end of the side wall of the second rotating shaft (410), the second anti-blocking long rod (460) is rotatably connected to the side wall of the third transmission assembly (450), the second anti-blocking short rod (470) is fixedly connected to the side wall of the second anti-blocking long rod (460) at equal intervals, and the curved pipe (480) is rotatably connected to the end of the first anti-blocking long rod (430) and the end of the second anti-blocking long rod (460).

6. The pre-mixing apparatus for producing polyethylene antibacterial film according to claim 5, characterized in that: The second transmission assembly (420) comprises a second fixed pipe (421), a second rotating pipe (422), a third bevel gear (423) and a fourth bevel gear (424); The second fixed pipe (421) is fixedly connected to the upper end of the side wall of the second rotating shaft (410), the second rotating pipe (422) is fixedly connected to the side wall of the second fixed pipe (421), the first anti-blocking long rod (430) is rotatably connected in the second rotating pipe (422), the third bevel gear (423) is fixedly connected to the side wall of the second fixed pipe (421), the fourth bevel gear (424) is fixedly connected to the end of the first anti-blocking long rod (430), and the third bevel gear (423) is engaged with the fourth bevel gear (424).

7. The pre-mixing apparatus for producing polyethylene antibacterial film according to claim 5, wherein: The third transmission assembly (450) comprises a third fixed pipe (451), a third rotating pipe (452), a fifth bevel gear (453) and a sixth bevel gear (454); The third fixed pipe (451) is fixedly connected to the lower end of the side wall of the second rotating shaft (410), the third rotating pipe (452) is fixedly connected to the side wall of the third fixed pipe (451), the second anti-blocking long rod (460) is rotatably connected in the third rotating pipe (452), the fifth bevel gear (453) is fixedly connected to the side wall of the second rotating shaft (410), the sixth bevel gear (454) is fixedly connected to the end of the second anti-blocking long rod (460), and the fifth bevel gear (453) is engaged with the sixth bevel gear (454).

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