CN211493463U

CN211493463U - Negative pressure adsorption type dust-absorption blackboard eraser

Info

Publication number: CN211493463U
Application number: CN201922265515.5U
Authority: CN
Inventors: 熊艳红; 朱志强
Original assignee: Hubei Polytechnic Institute
Current assignee: Hubei Polytechnic Institute
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-15
Anticipated expiration: 2029-12-19

Abstract

The invention relates to a negative pressure adsorption type dust collection blackboard eraser, which does not need manpower, can be automatically adsorbed on a blackboard by depending on negative pressure generated by a centrifugal negative pressure fan, and can freely walk, wipe and collect dust on the blackboard through electric power, so that people can be released in heavy work of wiping the blackboard, chalk dust is effectively prevented from being sucked into the respiratory tracts of teachers and students, and the health of the teachers and students is prevented from being influenced. The blackboard eraser can replace the prior common blackboard eraser, can reduce or even eliminate the phenomenon of chalk dust flying while improving the erasing efficiency and the erasing quality, and has important significance in teaching. The blackboard eraser has the advantages of light structure, low manufacturing cost, simple and convenient operation, safety and reliability.

Description

Negative pressure adsorption type dust-absorption blackboard eraser

Technical Field

The invention belongs to the field of blackboard erasers, and particularly relates to a negative pressure adsorption type dust collection blackboard eraser.

Background

Chalks and blackboards have long history as indispensable teaching aids for teaching, play an immeasurable role in the development of education institutions, and many schools adopt whiteboard and PPT courseware teaching modes at present, but the traditional chalks and blackboards teaching mode cannot be completely replaced, however, the chalk dust generated when the blackboards are erased always troubles people, and the chalk dust seriously influences the body health of teachers and students. When the blackboard eraser is used for large-area wiping, chalk dust attached to the surface of the blackboard eraser cannot be cleaned in time, the effect is poor, a large amount of chalk dust can be remained on the blackboard after the blackboard eraser is used for wiping, the chalk dust can float in the air in a large amount, and teachers and students can inhale respiratory tracts. However, the blackboard eraser popularized in the market at present has a few dust absorption functions, and the blackboard eraser with the functions of automatically wiping and completing dust absorption is not found in a large number of documents.

Disclosure of Invention

The purpose of the invention is as follows: the invention develops a negative pressure adsorption type dust absorption blackboard eraser which does not need manpower, can be automatically adsorbed on a blackboard by depending on negative pressure generated by a centrifugal negative pressure fan, completes the wiping function and simultaneously completes the dust absorption function by controlling the blackboard to reciprocate and turn on the blackboard, and has the triple functions of adsorption, wiping and dust absorption.

The technical scheme of the invention is as follows: a negative pressure adsorption type dust absorption blackboard eraser mainly comprises a shell 1, a synchronous belt 2, a sealing support plate 3, a universal wheel 4, a wiping disc 5, a synchronous belt wheel 6, a U-shaped support 7, a driving wheel 8, a servo steering motor 9, a walking motor 10, a sensor 11, a stop block 12, a negative pressure fan 14, a dust collection box 15, a filter screen 16, a belt wheel motor 17 and a wiping strip 20, wherein the wiping disc 5 is fixedly connected to a main shaft of the negative pressure fan 14, an air outlet of the negative pressure fan 14 is in butt joint with an inlet of the dust collection box 15, the filter screen 16 is fixed to an air outlet of the dust collection box 15 through the stop block 12, the driving wheel 8 is fixedly connected to a main shaft of the walking motor 10 and supported by the U-shaped support 7, the walking motor 10 is fixedly connected to the U-shaped support 7, the U-shaped support 7 is fixedly connected to a main shaft of the servo steering motor, and mesh with hold-in range 2 at the same time, one of them synchronous pulley 6 concreties on the main shaft of pulley motor 17, the hold-in range 2 is equipartition a plurality of cleans the strip 21, two universal wheels 4 and driving wheel 8 form the tripodal relation to arrange on sealed backup pad 3, the negative pressure fan 14 concreties on sealed backup pad 3, the outer dome tangent plane of universal wheel 4 and driving wheel 8, the upper surface of cleaning disc 5, the upper surface height of wiping piece 20 are almost unanimous, all is a little higher than the upper annular face of casing 1, in order to guarantee to form a high enough negative pressure between the upper annular face of casing 1 and the blackboard face when cleaning the blackboard, sealed backup pad 3 and get the case groove 13 and all install on casing 1, four sensors 11 are arranged on four sides of casing 1.

The invention has the beneficial effects that: the invention relates to a negative pressure adsorption type dust collection blackboard eraser, which does not need manpower, can be automatically adsorbed on a blackboard by depending on negative pressure generated by a centrifugal negative pressure fan, and can freely walk, wipe and collect dust on the blackboard through electric power, so that people are liberated in heavy work of erasing the blackboard, chalk dust is effectively prevented from being sucked into the respiratory tracts of teachers and students, and the health of the teachers and students is prevented from being influenced. The blackboard eraser can replace the prior common blackboard eraser, can reduce or even eliminate the phenomenon of chalk dust flying while improving the erasing efficiency and the erasing quality, and has important significance in teaching. The blackboard eraser has the advantages of light structure, low manufacturing cost, simple and convenient operation, safety and reliability.

Drawings

FIG. 1 is a negative pressure suction type dust-absorbing blackboard eraser with a wiping strip removed;

FIG. 2 is a negative pressure suction type dust-absorbing blackboard eraser with wiping strips and a wiping disk removed;

FIG. 3 is a partial three-dimensional view I of the negative pressure adsorption type dust-absorbing blackboard eraser;

FIG. 4 is a partial three-dimensional view of a negative pressure adsorption type dust-absorbing blackboard eraser;

FIG. 5 is a three-dimensional view of a negative pressure fan and dust bin;

FIG. 6 is an assembly view of the servo steering motor, the travel motor and the drive wheel;

FIG. 7 is a schematic view of a negative pressure air blower;

fig. 8 is a timing belt and wiping strip consolidation diagram.

Wherein the content of the first and second substances,

1. the automatic cleaning device comprises a shell, 2 parts of a synchronous belt, 3 parts of a sealing support plate, 4 parts of a universal wheel, 5 parts of a cleaning disc, 6 parts of a synchronous belt wheel, 7 parts of a U-shaped support, 8 parts of a driving wheel, 9 parts of a servo steering motor, 10 parts of a traveling motor, 11 parts of a sensor, 12 parts of a stop block, 13 parts of a box taking groove, 14 parts of a negative pressure fan, 15 parts of a dust collection box, 16 parts of a filter screen, 17 parts of a belt wheel motor, 18 parts of a fan impeller, 19 parts of a fan motor and 20 parts of a.

Detailed Description

As shown in fig. 1-8, the negative pressure fan 14 has two functions of negative pressure absorption and dust collection, because the outer dome section of the universal wheel 4 and the driving wheel 8, the upper surface of the wiping disk 5, and the upper surface of the wiping strip 20 are slightly higher than the upper annular surface of the housing 1, but the heights are almost uniform, so that although there is a very small gap between the upper annular surface of the housing 1 and the blackboard surface, but a similar closed space is formed by the upper annular surface of the shell 1, the sealing support plate 3 and the blackboard, when the suction amount of the negative pressure fan 14 is larger than the air intake amount of the gap between the upper annular surface of the casing 1 and the blackboard surface, a negative pressure state is formed by the upper annular surface of the shell 1, the sealed space formed between the sealed supporting plate 3 and the blackboard, namely a negative pressure vacuum state, under the action of atmospheric pressure, the negative pressure adsorption type dust absorption blackboard eraser is adsorbed on a blackboard to complete the negative pressure adsorption function.

The wiped chalk dust can enter the dust collection box 15 along the air duct of the negative pressure fan 14 under the suction force of the negative pressure fan 14, then the chalk dust is filtered and collected by the filter screen 16 in the dust collection box 15 to complete the dust collection and collection functions, and after the dust collection box 15 is fully collected, the filter screen 16 is opened by the rotary stop 12 to pour out the chalk dust.

When the negative pressure absorption type dust absorption blackboard eraser is absorbed on a blackboard, the driving wheel 8 is driven to rotate forwards and backwards through the forward and reverse rotation of the walking motor 10, the driving wheel 8 drives the two universal wheels 4 to move forwards and backwards due to the direction universality of the universal wheels 4, when the blackboard eraser needs to turn, the servo steering motor 9 is started to drive the main shaft of the servo steering motor to drive the U-shaped support 7 to rotate by an angle accurately, the U-shaped support 7 drives the driving wheel 8 to rotate by an angle, and then the driving wheel 8 drives the two universal wheels 4 to move under the angle to complete the turning function.

When the negative pressure adsorption type dust absorption blackboard eraser is adsorbed on a blackboard, the belt wheel motor 17 and the fan motor 19 are enabled to rotate simultaneously, the wiping turning moment of the wiping disk 5 is opposite to the wiping turning moment of the wiping strip 20 on the synchronous belt wheel 6, in order to achieve torque balance, the wiping disk 5 and the wiping strip 20 on the synchronous belt wheel 6 complete the wiping of the blackboard in the advancing and retreating processes of the blackboard eraser on the premise of wiping torque balance, and the wiping function is achieved.

When the negative pressure adsorption type dust absorption blackboard eraser is about to touch the side wall of the blackboard in the process of erasing the blackboard, the sensors 11 arranged on the four sides of the shell 1 sense the side wall of the blackboard and send an input signal, the signal is transmitted to a control system (the control system has applied for another patent and is not detailed here), and the control system sends an instruction to enable the walking motor 10 to reversely rotate and retreat or enable the servo steering motor 9 to rotate and turn, so that the barrier function is realized.

Claims

1. A negative pressure adsorption dust-absorption blackboard eraser is mainly composed of a shell, a synchronous belt, a sealing support plate, a universal wheel, a wiping disc, a synchronous belt wheel, a U-shaped support, a driving wheel, a servo steering motor, a walking motor, a sensor, a stop block, a negative pressure fan, a dust collection box, a filter screen, a belt wheel motor and a wiping block, and is characterized in that the wiping disc is fixedly connected to a main shaft of the negative pressure fan, an air outlet of the negative pressure fan is in butt joint with an inlet of the dust collection box, the filter screen is fixed to an air outlet of the dust collection box through the stop block, the driving wheel is fixedly connected to a main shaft of the walking motor and is supported through the U-shaped support, the walking motor is fixedly connected to the U-shaped support, the U-shaped support is fixedly connected to a main shaft of the servo steering motor, four synchronous belt wheels are uniformly distributed, a plurality of wiping blocks are uniformly distributed on the synchronous belt, two universal wheels and the driving wheel are arranged on the sealing support plate in a three-foot tripod relationship, and the negative pressure fan is fixedly connected on the sealing support plate.

2. The negative pressure absorbing dust-absorbing blackboard eraser as claimed in claim 1, wherein the heights of the outer dome section of the universal wheel and the driving wheel, the upper surface of the wiping disk and the upper surface of the wiping block are almost the same and slightly higher than the upper annular surface of the housing, the sealing support plate and the box taking groove are both mounted on the housing, and the four sensors are disposed on four sides of the housing.