WO2022061946A1 - 一种玉米提升机 - Google Patents

一种玉米提升机 Download PDF

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Publication number
WO2022061946A1
WO2022061946A1 PCT/CN2020/118774 CN2020118774W WO2022061946A1 WO 2022061946 A1 WO2022061946 A1 WO 2022061946A1 CN 2020118774 W CN2020118774 W CN 2020118774W WO 2022061946 A1 WO2022061946 A1 WO 2022061946A1
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Prior art keywords
corn
sieve
side wall
fixedly connected
bucket elevator
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PCT/CN2020/118774
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English (en)
French (fr)
Inventor
刘桂林
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菏泽和昌饲料有限公司
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Publication of WO2022061946A1 publication Critical patent/WO2022061946A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/02—Devices for feeding articles or materials to conveyors
    • B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
    • B65G47/18—Arrangements or applications of hoppers or chutes

Definitions

  • the invention relates to an elevator, in particular to a corn elevator.
  • Bucket elevator is suitable for vertical conveying of powdery, granular and small bulk materials. It is widely used in agriculture, metallurgy, mining, coal washing, cement, power plants, boiler coal supply and other occasions. For corn, at present, the existing bucket elevator for lifting corn cannot discharge corn kernels, dust and sundries in corn.
  • the technical problem to be solved by the present invention is: to provide a corn elevator, which solves the problem that the existing bucket elevator for lifting corn cannot discharge corn kernels, dust and sundries in the corn.
  • a corn elevator including a bucket elevator 1, a feeding hopper 101, a discharge port 102, a support plate 2, a sieve 3, a sieve hole 301, a funnel 4 and an oscillating motor 5, the lower surface of the support plate 2 is connected to the bucket elevator
  • the upper surface and rear end of the feeding hopper 101 on the machine 1 are fixedly connected, the upper end of the support plate 2 is hinged with the lower end of the rear side wall of the sieve 3, and the diameter of the sieve hole 301 on the sieve 3 is slightly larger than the maximum length of the largest corn kernel. 4.
  • the upper surface is fixedly connected with the lower surface of the sieve 3, the funnel 4 is located directly above the feeding hopper 101, and the lower part of the rear side wall of the bucket elevator 1 is fixedly provided with an oscillating motor 5, and the main shaft end of the oscillating motor 5 is connected to the The front end of the upper surface of the sieve 3 is fixedly connected.
  • the left and right sides of the upper surface of the feeding hopper 101 are respectively provided with material limiting nets 6, and the material limiting nets 6 are respectively fixedly connected with the adjacent bucket elevator 1, the feeding hopper 101 and the support plate 2 , the mesh diameter on the material limiting net 6 is slightly smaller than the minimum length of the smallest corn kernels, and the material limiting net 6 prevents the corn kernels from collapsing from the feeding hopper 101 .
  • the fan 7 is fixedly arranged on the right side wall of the material limiting net 6 on the right side
  • the centrifugal fan 9 is fixedly arranged on the lower part of the front side wall of the bucket elevator 1, the rear end of the air duct 8 and the material limiting fan on the left side
  • the left side wall of the net 6 is fixedly connected
  • the front end of the air duct 8 is fixedly connected with the air inlet 901 on the centrifugal fan 9
  • the air outlet 902 on the centrifugal fan 9 is connected and fixed with the dust bag 10, the fan 7, the air duct 8.
  • Centrifugal fan 9 and dust removal bag 10 discharge sundries in corn kernels.
  • the front side of the dust bag 10 is provided with a U-shaped frame 11 , the left and right sides of the lower part of the front side wall of the bucket elevator 1 are oppositely provided with lugs 12 , and the U-shaped frame 11 is fixed to the lugs by bolts 13 . 12, the U-shaped frame 11, the lugs 12, and the bolts 13 restrict the dust bag 10 from swinging violently.
  • a U-shaped material guide plate 14 is fixed on the lower side wall of the discharge port 102 on the bucket elevator 1 , and the corn kernels discharged from the discharge port 102 are better guided by the U-shaped material guide plate 14 .
  • the working principle of the present invention respectively turn on the oscillating motor, fan and centrifugal fan, pour the corn kernels to be lifted into the sieve, the oscillating motor drives the front part of the sieve to vibrate up and down, and the corn kernels poured into the sieve are discharged along the sieve holes and are discharged from the funnel. The lower end falls, and the corn kernels in the corn kernels remain in the sieve. When there are many corn kernels, grab the corn kernels by hand, and the dust and debris in the corn kernels discharged from the lower end of the funnel are blown to the left by the fan, and the centrifugal fan passes through the guide.
  • the air duct sucks out the dust and sundries, and the dust and sundries are blown into the dust bag by the air outlet on the centrifugal fan.
  • the U-shaped frame prevents the dust bag from swinging violently. Discharge, the discharged corn kernels slide to the storage position through the U-shaped guide plate. After the processing is completed, stop the operation of the oscillating motor, fan, and centrifugal fan, remove the bolts, remove the U-shaped frame, remove the dust removal bag, and put the dust removal bag inside. Pour the dust and sundries into the trash can.
  • the dust removal bag After emptying the dust and sundries in the dust removal bag, re-install the dust removal bag on the air outlet on the centrifugal fan, and re-buckle the dust removal bag in the U-shaped frame.
  • the U-shaped frame is attached to the tabs.
  • the beneficial effects of the present invention are as follows: 1.
  • the bucket elevator can discharge corn kernels, dust and sundries in the corn.
  • Material limiting nets are respectively set on the left and right sides of the upper surface of the feeding hopper, and the material limiting nets are respectively fixedly connected with the adjacent bucket elevator, feeding hopper and support plate.
  • the mesh diameter is slightly smaller than the minimum length of the smallest corn kernels, and the material limiting net prevents the corn kernels from falling out of the feed hopper. 3.
  • a fan is fixed on the right side wall of the material limiting net on the right side
  • a centrifugal fan is fixed on the lower part of the front side wall of the bucket elevator
  • the rear end of the air duct is fixedly connected with the left side wall of the material limiting net on the left side.
  • the front end of the air duct is fixedly connected with the air inlet on the centrifugal fan
  • the air outlet on the centrifugal fan is connected and fixed with the dust removal bag
  • the fan, the air duct, the centrifugal fan and the dust removal bag discharge the sundries in the corn kernels.
  • a U-shaped frame is set on the front side of the dust bag, and ears are set on the left and right sides of the lower part of the front side wall of the bucket elevator.
  • the U-shaped frame is fixed on the ears by bolts. Sheets and bolts limit the violent swing of the dust bag. 5.
  • a U-shaped guide plate is fixed on the lower side wall of the discharge port on the bucket elevator, and the corn kernels discharged from the discharge port are better guided by the U-shaped guide plate.
  • Fig. 1 is the structural representation of the present invention
  • Figure 2 is a side view of the present invention.
  • 1- bucket elevator 101- feed hopper, 102- discharge port, 2- support plate, 3- sieve, 301- sieve hole, 4- funnel, 5- oscillating motor, 6- material limiter net, 7-fan, 8-air duct, 9-centrifugal fan, 901-air inlet, 902-air outlet, 10-dust bag, 11-U-shaped frame, 12-lug, 13-bolt, 14-U-shaped guide material board.
  • a corn elevator described in this specific embodiment includes a bucket elevator 1, a feed hopper 101, a discharge port 102, a support plate 2, a sieve 3, a sieve hole 301, a funnel 4 and Oscillating motor 5, the lower surface of the support plate 2 is fixedly connected to the rear end of the upper surface of the feeding hopper 101 on the bucket elevator 1, the upper end of the support plate 2 is hinged with the lower end of the rear side wall of the screen 3, and the screen on the screen 3 is hinged.
  • the diameter of the hole 301 is slightly larger than the maximum length of the largest corn kernel
  • the upper surface of the funnel 4 is fixedly connected with the lower surface of the screen 3
  • the funnel 4 is located directly above the feeding hopper 101
  • the lower part of the rear side wall of the bucket elevator 1 is fixed
  • An oscillating motor 5 is provided, and the main shaft end of the oscillating motor 5 is fixedly connected to the front end of the upper surface of the sieve 3 .
  • the left and right sides of the upper surface of the feeding hopper 101 are respectively provided with material limiting nets 6, and the material limiting nets 6 are respectively fixedly connected with the adjacent bucket elevator 1, the feeding hopper 101 and the support plate 2 , the mesh diameter on the material limiting net 6 is slightly smaller than the minimum length of the smallest corn kernels, and the material limiting net 6 prevents the corn kernels from collapsing from the feeding hopper 101 .
  • the fan 7 is fixedly arranged on the right side wall of the material limiting net 6 on the right side
  • the centrifugal fan 9 is fixedly arranged on the lower part of the front side wall of the bucket elevator 1, the rear end of the air duct 8 and the material limiting fan on the left side
  • the left side wall of the net 6 is fixedly connected
  • the front end of the air duct 8 is fixedly connected with the air inlet 901 on the centrifugal fan 9
  • the air outlet 902 on the centrifugal fan 9 is connected and fixed with the dust bag 10, the fan 7, the air duct 8.
  • Centrifugal fan 9 and dust removal bag 10 discharge sundries in corn kernels.
  • the front side of the dust bag 10 is provided with a U-shaped frame 11 , the left and right sides of the lower part of the front side wall of the bucket elevator 1 are oppositely provided with lugs 12 , and the U-shaped frame 11 is fixed to the lugs by bolts 13 . 12, the U-shaped frame 11, the lugs 12, and the bolts 13 restrict the dust bag 10 from swinging violently.
  • a U-shaped material guide plate 14 is fixed on the lower side wall of the discharge port 102 on the bucket elevator 1 , and the corn kernels discharged from the discharge port 102 are better guided by the U-shaped material guide plate 14 .
  • the oscillating motor, the fan and the centrifugal fan are turned on respectively, and the corn kernels to be lifted are poured into the sieve, the oscillating motor drives the front part of the sieve to vibrate up and down, and the corn kernels poured into the sieve are discharged along the sieve holes. It falls from the lower end of the funnel, and the corn kernels in the corn kernels remain in the sieve. When there are too many corn kernels, grab the corn kernels by hand, and the dust and debris in the corn kernels discharged from the lower end of the funnel are blown to the left by the fan. The centrifugal fan The dust and sundries blown out are sucked out through the air duct.
  • the dust and sundries are blown into the dust bag by the air outlet on the centrifugal fan.
  • the U-shaped frame prevents the dust bag from swinging violently.
  • the corn kernels are lifted by the bucket elevator.
  • the material outlet is discharged, and the discharged corn kernels slide to the storage position through the U-shaped material guide plate.
  • the beneficial effects of the present invention are as follows: 1.
  • the bucket elevator can discharge corn kernels, dust and sundries in the corn.
  • Material limiting nets are respectively set on the left and right sides of the upper surface of the feeding hopper, and the material limiting nets are respectively fixedly connected with the adjacent bucket elevator, feeding hopper and support plate.
  • the mesh diameter is slightly smaller than the minimum length of the smallest corn kernels, and the material limiting net prevents the corn kernels from falling out of the feed hopper. 3.
  • a fan is fixed on the right side wall of the material limiting net on the right side
  • a centrifugal fan is fixed on the lower part of the front side wall of the bucket elevator
  • the rear end of the air duct is fixedly connected with the left side wall of the material limiting net on the left side.
  • the front end of the air duct is fixedly connected with the air inlet on the centrifugal fan
  • the air outlet on the centrifugal fan is connected and fixed with the dust removal bag
  • the fan, the air duct, the centrifugal fan and the dust removal bag discharge the sundries in the corn kernels.
  • a U-shaped frame is set on the front side of the dust bag, and ears are set on the left and right sides of the lower part of the front side wall of the bucket elevator.
  • the U-shaped frame is fixed on the ears by bolts. Sheets and bolts limit the violent swing of the dust bag. 5.
  • a U-shaped guide plate is fixed on the lower side wall of the discharge port on the bucket elevator, and the corn kernels discharged from the discharge port are better guided by the U-shaped guide plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Of Harvested Produce (AREA)

Abstract

一种玉米提升机，支撑板(2)下表面与斗式提升机(1)上的进料斗(101)上表面后端固定连接，支撑板(2)上端与筛子(3)后侧壁下端铰接，筛子(3)上的筛孔(301)直径略大于最大玉米粒的最大长度，漏斗(4)上表面与筛子(3)下表面固定连接，漏斗(4)位于进料斗(101)正上方，斗式提升机(1)后侧壁下部固定设置振荡电机(5)，振荡电机(5)主轴端与筛子(3)上表面前端固定连接。斗式提升机能排出玉米中的玉米核、粉尘、杂物。

Description

一种玉米提升机 技术领域
本发明涉及一种提升机，尤其涉及一种玉米提升机。
背景技术
斗式提升机适用于垂直输送粉状、粒状、及小块状的的散状物料，广泛的应用于农业、冶金、矿山、洗煤、水泥、电厂、锅炉供煤等场合，同时也适用于提升玉米，目前，现有的用于提升玉米的斗式提升机，不能排出玉米中的玉米核、粉尘、杂物。
实用新型内容
本发明所要解决的技术问题是：提供一种玉米提升机，解决了现有用于提升玉米的斗式提升机，不能排出玉米中的玉米核、粉尘、杂物的问题。
本发明为解决上述提出的问题所采用的技术方案是：
一种玉米提升机，包括斗式提升机1、进料斗101、出料口102、支撑板2、筛子3、筛孔301、漏斗4和振荡电机5，支撑板2下表面与斗式提升机1上的进料斗101上表面后端固定连接，所述支撑板2上端与筛子3后侧壁下端铰接，所述筛子3上的筛孔301直径略大于最大玉米粒的最大长度，漏斗4上表面与筛子3下表面固定连接，所述漏斗4位于所述进料斗101正上方，所述斗式提升机1后侧壁下部固定设置振荡电机5，所述振荡电机5主轴端与所述筛子3上表面前端固定连接。
所述的进料斗101上表面左、右侧分别设置限料网6，且所述限料网6分别与相邻的所述斗式提升机1、进料斗101、支撑板2固定连接，所述限料网6上的网眼直径略小于最小玉米粒的最小长度，限料网6防止玉米粒从进料斗101 内崩出。
位于右侧的所述的限料网6右侧壁固定设置风机7，所述斗式提升机1前侧壁下部固定设置离心风机9，导风管8后端与左侧的所述限料网6左侧壁固定连接，导风管8前端与所述离心风机9上的进风口901固定连接，所述离心风机9上的出风口902与除尘布袋10连通固定，风机7、导风管8、离心风机9、除尘布袋10排出玉米粒中的杂物。
所述的除尘布袋10前侧设置U形框架11，所述斗式提升机1前侧壁下部左、右侧相对设置耳片12，所述U形框架11通过螺栓13固定在所述耳片12上，通过U形框架11、耳片12、螺栓13限制除尘布袋10剧烈摆动。
所述的斗式提升机1上的出料口102下侧壁固定设置U形导料板14，通过U形导料板14更好的对出料口102内排出的玉米粒导向。
本发明的工作原理：分别开启振荡电机、风机、离心风机，把需要提升的玉米粒倒入筛子内，振荡电机带动筛子前部上下振动，倒入筛子内的玉米粒沿筛孔排出后从漏斗下端落下，玉米粒中的玉米核残留在筛子内，当玉米核较多时，用手抓出玉米核，漏斗下端排出的玉米粒中的粉尘、杂物被风机吹向左侧，离心风机通过导风管吸走吹出的粉尘、杂物，粉尘、杂物被离心风机上的出风口吹入除尘布袋内，U形框架防止除尘布袋剧烈摆动，玉米粒经斗式提升机提升后由出料口排出，排出的玉米粒经U形导料板滑至存放位置，加工完成后，停止振荡电机、风机、离心风机运行，取下螺栓，拿开U形框架，取下除尘布袋，把除尘布袋内的粉尘、杂物倒入垃圾桶，倒净除尘布袋内的粉尘、杂物后，把除尘布袋重新安装在离心风机上的出风口上，重新把除尘布袋扣在U形框架内，通过螺栓把U形框架固定在耳片上。
本发明的有益效果在于：1、斗式提升机能排出玉米中的玉米核、粉尘、杂 物。2、进料斗上表面左、右侧分别设置限料网，且所述限料网分别与相邻的所述斗式提升机、进料斗、支撑板固定连接，所述限料网上的网眼直径略小于最小玉米粒的最小长度，限料网防止玉米粒从进料斗内崩出。3、位于右侧的限料网右侧壁固定设置风机，所述斗式提升机前侧壁下部固定设置离心风机，导风管后端与左侧的所述限料网左侧壁固定连接，导风管前端与所述离心风机上的进风口固定连接，所述离心风机上的出风口与除尘布袋连通固定，风机、导风管、离心风机、除尘布袋排出玉米粒中的杂物。4、除尘布袋前侧设置U形框架，所述斗式提升机前侧壁下部左、右侧相对设置耳片，所述U形框架通过螺栓固定在所述耳片上，通过U形框架、耳片、螺栓限制除尘布袋剧烈摆动。5、斗式提升机上的出料口下侧壁固定设置U形导料板，通过U形导料板更好的对出料口内排出的玉米粒导向。
附图说明
图1是本发明的结构示意图；
图2是本发明的侧视图。
其中，1-斗式提升机、101-进料斗、102-出料口、2-支撑板、3-筛子、301-筛孔、4-漏斗、5-振荡电机、6-限料网、7-风机、8-导风管、9-离心风机、901-进风口、902-出风口、10-除尘布袋、11-U形框架、12-耳片、13-螺栓、14-U形导料板。
具体实施方式
下面结合附图进一步说明本发明的实施例。
参照图1-2，本具体实施方式所述的一种玉米提升机，包括斗式提升机1、进料斗101、出料口102、支撑板2、筛子3、筛孔301、漏斗4和振荡电机5，支撑板2下表面与斗式提升机1上的进料斗101上表面后端固定连接，所述支 撑板2上端与筛子3后侧壁下端铰接，所述筛子3上的筛孔301直径略大于最大玉米粒的最大长度，漏斗4上表面与筛子3下表面固定连接，所述漏斗4位于所述进料斗101正上方，所述斗式提升机1后侧壁下部固定设置振荡电机5，所述振荡电机5主轴端与所述筛子3上表面前端固定连接。
所述的进料斗101上表面左、右侧分别设置限料网6，且所述限料网6分别与相邻的所述斗式提升机1、进料斗101、支撑板2固定连接，所述限料网6上的网眼直径略小于最小玉米粒的最小长度，限料网6防止玉米粒从进料斗101内崩出。
位于右侧的所述的限料网6右侧壁固定设置风机7，所述斗式提升机1前侧壁下部固定设置离心风机9，导风管8后端与左侧的所述限料网6左侧壁固定连接，导风管8前端与所述离心风机9上的进风口901固定连接，所述离心风机9上的出风口902与除尘布袋10连通固定，风机7、导风管8、离心风机9、除尘布袋10排出玉米粒中的杂物。
所述的除尘布袋10前侧设置U形框架11，所述斗式提升机1前侧壁下部左、右侧相对设置耳片12，所述U形框架11通过螺栓13固定在所述耳片12上，通过U形框架11、耳片12、螺栓13限制除尘布袋10剧烈摆动。
所述的斗式提升机1上的出料口102下侧壁固定设置U形导料板14，通过U形导料板14更好的对出料口102内排出的玉米粒导向。
本具体实施方式的工作原理：分别开启振荡电机、风机、离心风机，把需要提升的玉米粒倒入筛子内，振荡电机带动筛子前部上下振动，倒入筛子内的玉米粒沿筛孔排出后从漏斗下端落下，玉米粒中的玉米核残留在筛子内，当玉米核较多时，用手抓出玉米核，漏斗下端排出的玉米粒中的粉尘、杂物被风机 吹向左侧，离心风机通过导风管吸走吹出的粉尘、杂物，粉尘、杂物被离心风机上的出风口吹入除尘布袋内，U形框架防止除尘布袋剧烈摆动，玉米粒经斗式提升机提升后由出料口排出，排出的玉米粒经U形导料板滑至存放位置，加工完成后，停止振荡电机、风机、离心风机运行，取下螺栓，拿开U形框架，取下除尘布袋，把除尘布袋内的粉尘、杂物倒入垃圾桶，倒净除尘布袋内的粉尘、杂物后，把除尘布袋重新安装在离心风机上的出风口上，重新把除尘布袋扣在U形框架内，通过螺栓把U形框架固定在耳片上。
本发明的有益效果在于：1、斗式提升机能排出玉米中的玉米核、粉尘、杂物。2、进料斗上表面左、右侧分别设置限料网，且所述限料网分别与相邻的所述斗式提升机、进料斗、支撑板固定连接，所述限料网上的网眼直径略小于最小玉米粒的最小长度，限料网防止玉米粒从进料斗内崩出。3、位于右侧的限料网右侧壁固定设置风机，所述斗式提升机前侧壁下部固定设置离心风机，导风管后端与左侧的所述限料网左侧壁固定连接，导风管前端与所述离心风机上的进风口固定连接，所述离心风机上的出风口与除尘布袋连通固定，风机、导风管、离心风机、除尘布袋排出玉米粒中的杂物。4、除尘布袋前侧设置U形框架，所述斗式提升机前侧壁下部左、右侧相对设置耳片，所述U形框架通过螺栓固定在所述耳片上，通过U形框架、耳片、螺栓限制除尘布袋剧烈摆动。5、斗式提升机上的出料口下侧壁固定设置U形导料板，通过U形导料板更好的对出料口内排出的玉米粒导向。
本发明的具体实施例不构成对本发明的限制，凡是采用本发明的相似结构及变化，均在本发明的保护范围内。

Claims (5)

  1. 一种玉米提升机，其特征在于：包括斗式提升机(1)、进料斗(101)、出料口(102)、支撑板(2)、筛子(3)、筛孔(301)、漏斗(4)、振荡电机(5)，支撑板(2)下表面与斗式提升机(1)上的进料斗(101)上表面后端固定连接，所述支撑板(2)上端与筛子(3)后侧壁下端铰接，所述筛子(3)上的筛孔(301)直径略大于最大玉米粒的最大长度，漏斗(4)上表面与筛子(3)下表面固定连接，所述漏斗(4)位于所述进料斗(101)正上方，所述斗式提升机(1)后侧壁下部固定设置振荡电机(5)，所述振荡电机(5)主轴端与所述筛子(3)上表面前端固定连接。
  2. 如权利要求1所述的一种玉米提升机，其特征在于：所述的进料斗(101)上表面左、右侧分别设置限料网(6)，且所述限料网(6)分别与相邻的所述斗式提升机(1)、进料斗(101)、支撑板(2)固定连接，所述限料网(6)上的网眼直径略小于最小玉米粒的最小长度。
  3. 如权利要求2所述的一种玉米提升机，其特征在于：位于右侧的所述的限料网(6)右侧壁固定设置风机(7)，所述斗式提升机(1)前侧壁下部固定设置离心风机(9)，导风管(8)后端与左侧的所述限料网(6)左侧壁固定连接，导风管(8)前端与所述离心风机(9)上的进风口(901)固定连接，所述离心风机(9)上的出风口(902)与除尘布袋(10)连通固定。
  4. 如权利要求3所述的一种玉米提升机，其特征在于：所述的除尘布袋(10)前侧设置U形框架(11)，所述斗式提升机(1)前侧壁下部左、右侧相对设置耳片(12)，所述U形框架(11)通过螺栓(13)固定在所述耳片(12)上。
  5. 如权利要求1所述的一种玉米提升机，其特征在于：所述的斗式提升机(1)上的出料口(102)下侧壁固定设置U形导料板(14)。
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