WO2020135599A1 - 一种旋转物位开关 - Google Patents

一种旋转物位开关 Download PDF

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Publication number
WO2020135599A1
WO2020135599A1 PCT/CN2019/128754 CN2019128754W WO2020135599A1 WO 2020135599 A1 WO2020135599 A1 WO 2020135599A1 CN 2019128754 W CN2019128754 W CN 2019128754W WO 2020135599 A1 WO2020135599 A1 WO 2020135599A1
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Prior art keywords
switch
blade
motor
electric motor
seat
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PCT/CN2019/128754
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English (en)
French (fr)
Inventor
谢吉材
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厦门帮众科技有限公司
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Publication of WO2020135599A1 publication Critical patent/WO2020135599A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm

Definitions

  • the invention relates to the field of textile machinery, in particular to a rotary level switch.
  • Level switch also known as level switch or level gauge, refers to an instrument for real-time detection of changes in the height of solid materials in a container. It is widely used in modern industry. It is used for various materials (powder, granule or block, etc.) )
  • material level detection work most of the existing material level switches are a device that detects the material level by mechanical rotation. Usually, after the motor is decelerated, the transmission shaft is directly connected to the clutch to drive the connection shaft to rotate at a low speed , With blades at the shaft end. When the material exceeds the blade, the rotation of the blade is hindered, and a rotational displacement is generated around the main shaft.
  • the displacement causes the micro switch to operate, the detection device outputs a material signal, and at the same time cuts off the power to stop the blade rotation; when the material falls, the blade is no longer subjected to resistance, the detection device reverts to the original state by the torsion spring, and the micro switch action sends out no material Signal, turning on the power causes the motor to rotate, and the blade rotation resumes.
  • This level switch is all metal, the driver is placed behind the motor, and then it is completely sealed, the heat dissipation is not good, it is easy to cause damage to the drive or the motor; and this level switch has a clutch structure, when it can not turn, the clutch will Trigger a micro switch, but the micro switch is mechanical, often unstable, there will be a clutch trigger, but the micro switch has no signal, or the micro switch does not trigger the signal and other false alarms.
  • the batching machine is connected to the rear textile machine through a long screw.
  • the long screw transports the cotton material to the textile machine.
  • a wire handle needs to do a tens of kilograms of thread.
  • the alarm of the material level judgment of the batching machine must be very accurate, which requires the stability of the level switch. Sex is very high.
  • the batching machine is in a high-temperature environment, and the traditional level switch is easily damaged in this environment and has a high failure rate.
  • the object of the present invention is to provide a rotary level switch with high stability and high heat resistance, which can accurately send signals, is compact and low in cost.
  • a rotary level switch is characterized by comprising a blade, a motor and a sensor, the rotating shaft of the blade is connected to the output shaft of the motor, a coupling is provided between the two, and the rotating shaft of the blade is between the coupling
  • the motor is a stepper motor, which is installed on the motor mounting seat, the bearing seat is installed on a fixed seat, the coupling is located between the fixed seat and the motor mounting seat, the fixed seat Connected to the motor mounting base through the pillar;
  • the sensor includes a proximity switch and an induction head, the induction head is installed on the rotating shaft of the blade, between the fixed seat and the coupling, the proximity switch is installed on the switch seat, and the switch seat is fixed on the motor mount Or on a fixed base, the proximity switch is connected to an external drive.
  • the sensing head and the proximity switch are on the same horizontal plane.
  • the induction head is a nut.
  • the pillar and switch seat are made of plastic material.
  • the invention counts through the sensor, combined with the phenomenon that the stepper motor is out of step caused by the blocked blade, judges whether there is material in the batching machine, draws a conclusion based on the number of counts, and promptly alarms.
  • Its structural principle is simple, using plastic pillars and an open frame instead.
  • the driver and the sensor are installed separately to ensure that the driver will not be damaged due to high temperature and the stability is higher.
  • FIG. 1 is a schematic diagram of the overall structure of the present invention.
  • the blade 1 is a preferred solution of the present invention, including the blade 1 and the motor 2, the rotating shaft 11 of the blade 1 is connected to the output shaft of the motor 2, a coupling 3 is provided between the two, the rotating shaft 11 of the blade 1 and the coupling 3 There is also a bearing seat 4 (with a bearing inside).
  • the motor 2 is a stepping motor, and the blade 1 is driven by the motor 2 to rotate.
  • the motor 2 is mounted on the motor mount 21, the bearing mount 4 is mounted on the fixed base 41, the coupling 3 is located between the fixed base 41 and the motor mounted base 21, the fixed base 41 and the motor mounted base 21 are connected by a pillar 5, this
  • there are four pillars 5 which are respectively arranged on the four corners of the fixing base 41 and the motor mounting base 21, and are fixed by screws.
  • the pillar 5 is made of plastic material and has better heat insulation effect.
  • the four pillars 5 will be
  • the fixed seat 41 and the motor mounting seat 21 are spread apart to form an open frame type space. Compared with the closed space of the traditional level switch, this structure has quick heat dissipation, internal and external air circulation, and no local overheating.
  • the pillar 5 is also provided with a slot for fixing the wrench.
  • the sensor 6 counts to determine whether there is material.
  • the sensor 6 is composed of a proximity switch 61 and an induction head 62.
  • the induction head 62 is a nut, and the induction head 62 is installed on the rotating shaft 11 of the blade 1
  • the proximity switch 61 is installed on the switch base 63.
  • the switch base 63 is fixed on the motor mounting base 21, and can also be fixed on the fixed base 41.
  • the switch base 63 is also made of plastic material. The thermal effect is good.
  • the sensor head 62 and the proximity switch 61 are on the same horizontal plane.
  • the proximity switch 61 is connected to an external drive (not shown in the figure).
  • the sensor head 62 moves along with the rotating shaft 11. When the sensor turns to the proximity switch 61, the driver a bit.
  • the driver of the proximity switch 61 is provided outside, where it is not afraid of heat, and is connected to the proximity switch 61 through a line, so that the driver is not easily damaged.
  • the level switch in the batching machine (the level switch is placed according to the shape of the batching machine).
  • the blade 1 has no resistance, and the stepper motor 2 rotates at the same speed (that is, continuous input of control pulses) , The motor 2 continuously rotates accordingly).
  • the induction head 62 rotates with the rotating shaft 11 at the same speed, and the proximity switch 61 periodically receives a signal of a fixed frequency.
  • the blade 1 will be subjected to resistance, and the stepping motor 2 will produce a step out phenomenon (or called step loss, that is, the number of steps the rotor advances is less than the number of pulses).
  • the stepping motor 2 When the batching machine has a lot of material, the stepping motor 2 The out-of-step phenomenon will be very serious (that is, the rotor stays at a position or vibrates around a position), and the out-of-step will not cause damage to the stepper motor 2.
  • the induction head 62 does not rotate or rotates irregularly, and the proximity switch 61 cannot receive the signal periodically or there is no signal, and it can be known that there is material in the batching machine.
  • the induction head 62 is close to the proximity switch 61, the blade 1 is blocked, and the stepper motor 2 is out of step and shakes. At this time, the proximity switch 61 will always receive the signal and the driver will continue to count.
  • the basis of the judgment is that the drive count is not expected within a certain range, and less than or greater than this range is expected.
  • the proximity switch 61 can receive 1 ⁇ 3 signals within 2 seconds, and the drive count is greater than or equal to 1 or less than 3, that is, one of the two is no material, exceeding this range , There has been no signal or the signal is too frequent, it is considered to be expected.
  • the level switch of the invention is locked on the material tank by screws, the motor 2 is outside the material tank, and the entire part in the material tank is mechanical, and is not afraid of high temperature. Compared with the traditional level switch, the structure is simpler and more stable.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

一种旋转物位开关，包括叶片（１）、电机（２）和传感器（６），叶片（１）的转轴（１１）和电机（２）输出轴相连，二者之间设有联轴器（３），电机（２）为步进电机，传感器（６）包括接近开关（６１）和一个感应头（６２），感应头（６２）安装在叶片（１）的转轴（１１）上、固定座（４１）和联轴器（３）之间，接近开关（６１）安装在开关座（６３）上，开关座（６３）固定在电机安装座（２１）或固定座（４１）上，接近开关（６１）连接外部驱动器。该开关通过传感器（６）计数，结合叶片（１）受阻造成步进电机失步的现象，判断配料机内是否有料，根据计数量得出结论，及时报警，其结构原理简单，采用塑料支柱，开放的框架形式，代替原有全金属封闭形式，有效隔热，使用寿命更长，且大大降低成本。同时将驱动器和传感器（６）分开安装，可保证驱动器不会因为高温影响而损坏，稳定性更高。

Description

一种旋转物位开关 技术领域
本发明涉及纺织机械领域，尤其涉及一种旋转物位开关。
 背景技术
物位开关又称料位开关或料位计，是指对容器中固体物料高度的变化进行实时检测的仪表，在现代工业中有着广泛应用，对于各种物料（粉状，颗粒或者块状等）的料位检测工作，现有的大多数料位开关是一种采用机械转动的方式检测料位的装置，通常将电动机减速后，采用传动轴与离合器直接连接，带动连接轴以低转速旋转，轴端带有叶片。当物料超过叶片时，叶片转动受阻，便围绕主轴产生旋转位移。该位移使微动开关动作，检测装置输出有料信号，同时切断电源使叶片转动停止；当物料下降时叶片不再受到阻力，检测装置依靠扭力弹簧又恢复到原始状态，微动开关动作发出无料信号，接通电源使电机旋转，叶片转动恢复。
这种物位开关是全金属的，驱动器放在电机后面，而后完全密封，散热不好，容易导致驱动器或电机损坏；且这种物位开关有一个离合结构，转不动的时候，离合器会触发一个微动开关，但是微动开关又是机械性的，经常不稳定，会出现离合触发了，但是微动开关没有信号，或者离合没触发微动开关又有信号等误报警情况。
对于纺织配料机而言，配料机通过长螺杆连接后部纺织机，长螺杆将棉料输送至纺织机，一个丝柄要做几十公斤的线，一旦配料机没有棉料没报警，而螺杆又一直处于送料状态，会造成螺杆空转发热，将螺杆内残余的棉料烧黑，螺杆清理困难，而再次重新送料时，只能通过用新棉料将残余烧黑棉料挤出的方式对螺杆进行清理，由于螺杆很长，这种挤出清理方式非常浪费棉料，一次故障停机就可能损失过万，因此对配料机的料位判断报警要非常准确，这就要求物位开关的稳定性要非常高。且配料机内是高温环境，传统物位开关在这种环境中使用容易损坏，故障率高。
 技术问题
本发明的目的在于提供一种具有高稳定性，高耐热性的旋转物位开关，能够准确发出信号，且体积小巧，成本低。
 技术解决方案
本发明所解决的技术问题可以采用以下技术方案来实现：
一种旋转物位开关，其特征是：包括叶片、电机和传感器，所述叶片的转轴和电机输出轴相连，二者之间设有联轴器，所述叶片的转轴与联轴器之间还设有轴承座；所述电机为步进电机，安装在电机安装座上，所述轴承座安装在固定座上，所述联轴器位于固定座和电机安装座之间，所述固定座和电机安装座通过支柱相连；
所述传感器包括接近开关和一个感应头，所述感应头安装在叶片的转轴上、固定座和联轴器之间，所述接近开关安装在开关座上，所述开关座固定在电机安装座或固定座上，所述接近开关连接外部驱动器。
优选的，所述感应头与接近开关处于同一水平面上。
优选的，所述感应头为螺母。
优选的，所述支柱有4根，分别设置在固定座和电机安装座的四个角上，形成开放框架式空间。
优选的，所述支柱和开关座为塑料材质。
 有益效果
本发明通过传感器计数，结合叶片受阻造成步进电机失步的现象，判断配料机内是否有料，根据计数量得出结论，及时报警，其结构原理简单，采用塑料支柱，开放的框架形式，代替原有全金属封闭形式，有效隔热，使用寿命更长，且大大降低成本。同时将驱动器和传感器分开安装，可保证驱动器不会因为高温影响而损坏，稳定性更高。
 附图说明
图1是本发明的整体结构示意图。
图中，1叶片、2电机、3联轴器、4轴承座、5支柱、6传感器11、转轴、21电机安装座、41固定座、61接近开关、62感应头、63开关座。
 本发明的实施方式
以下结合附图及具体实施例对本发明做详细描述，但本发明的实施方式不限于此。
图1是本发明的优选方案，包括叶片1和电机2，叶片1的转轴11和电机2输出轴相连，二者之间设有联轴器3，叶片1的转轴11与联轴器3之间还设有轴承座4（内设有轴承）。电机2为步进电机，叶片1在电机2的带动下旋转。
电机2安装在电机安装座21上，轴承座4安装在固定座41上，联轴器3位于固定座41和电机安装座21之间，固定座41和电机安装座21通过支柱5相连，本实施例中，支柱5有4根，分别设置在固定座41和电机安装座21的四个角上，通过螺丝连接固定，支柱5为塑料材质，隔热效果较好热，4根支柱5将固定座41和电机安装座21撑开，形成开放框架式空间，与传统物位开关的密闭空间相比，这种结构散热快，内外空气流通，不会局部过热。支柱5上还设置有扳手固定的槽。
本实施例通过传感器6计数的方法判断是否有料,传感器6是由一个接近开关61和一个感应头62组成，本实施例中感应头62为螺母，感应头62安装在叶片1的转轴11上，固定座41和联轴器3之间，接近开关61则安装在开关座63上，开关座63固定在电机安装座21上，也可固定在固定座41上，开关座63也是塑料材质，隔热效果好，感应头62与接近开关61处于同一水平面上，接近开关61连接外部驱动器（图中未示出），感应头62随转轴11运动，转动至靠近接近开关61时，驱动器就会记一下。接近开关61的驱动器设置在外部，不怕热的地方，通过线路与接近开关61相连，这样驱动器就不容易损坏。
把物位开关放入配料机中，（根据配料机形状放置物位开关），当配料机内没有料时，叶片1无阻力，步进电机2以同一速度一直旋转（即连续地输入控制脉冲，电机2就相应地连续转动），此时感应头62随转轴11按同一速度转动，接近开关61则周期性收到固定频率的信号。当配料机内有料时，叶片1会受到阻力，步进电机2会产生失步现象（或叫丢步，即转子前进的步数小于脉冲数），配料机中料很多时，步进电机2的失步现象就会很严重（即转子停留在一个位置上或围绕一个位置振动），失步对步进电机2不会造成损害。此时感应头62也不转动或转动不规律，接近开关61则无法周期性收到信号或者没有信号，即可得知配料机中有料。但是当感应头62在靠近接近开关61的位置，叶片1受阻，步进电机2失步抖动，此时接近开关61会一直接收到信号，驱动器会不断计数。因此判断的依据是驱动器计数在某一区间范围内无料，少于或大于这一区间都是有料的。例如，配料机中无料时，接近开关61在2秒内可接收到1~3个信号，驱动器计数大于等于1个或小于3个，即一个两个都是没有料，超过这个范围之内，一直没有信号或者信号太频繁，都认为是有料。
本发明的物位开关通过螺丝锁在料罐上，电机2在料罐外，料罐内的整个部分都是机械的，不怕高温。比起传统物位开关，结构更加简单，更稳定。
以上所述，仅是本发明较佳实施例而已，并非对本发明的技术范围作任何限制，故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、等同变化与修饰，仍属于本发明的保护范围。

Claims (5)

  1. 一种旋转物位开关，其特征是：包括叶片、电机和传感器，所述叶片的转轴和电机输出轴相连，二者之间设有联轴器，所述叶片的转轴与联轴器之间还设有轴承座；所述电机为步进电机，安装在电机安装座上，所述轴承座安装在固定座上，所述联轴器位于固定座和电机安装座之间，所述固定座和电机安装座通过支柱相连；
    所述传感器包括接近开关和一个感应头，所述感应头安装在叶片的转轴上、固定座和联轴器之间，所述接近开关安装在开关座上，所述开关座固定在电机安装座或固定座上，所述接近开关连接外部驱动器。
  2. 根据权利要求1所述的一种旋转物位开关，其特征在于：所述感应头与接近开关处于同一水平面上。
  3. 根据权利要求2所述的一种旋转物位开关，其特征在于：所述感应头为螺母。
  4. 根据权利要求1所述的一种旋转物位开关，其特征在于：所述支柱有4根，分别设置在固定座和电机安装座的四个角上，形成开放框架式空间。
  5. 根据权利要求4所述的一种旋转物位开关，其特征在于：所述支柱和开关座为塑料材质。
PCT/CN2019/128754 2018-12-28 2019-12-26 一种旋转物位开关 WO2020135599A1 (zh)

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CN109521499A (zh) * 2018-12-28 2019-03-26 厦门帮众科技有限公司 一种旋转物位开关
CN110132369A (zh) * 2019-06-13 2019-08-16 青岛伊克斯达智能装备有限公司 一种用于检测废旧橡塑热裂解过程固体产物料位的装置

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