Chalkboard eraser capable of automatically collecting chalk dust
A technology of automatic collection and chalk ash, which is applied to the cleaning devices of blackboards or slates, printing, office supplies, etc. It can solve the problems of polluting the surrounding environment, increasing the difficulty of cleaning, and hidden health risks.
Inactive Publication Date: 2017-01-04
刘乐凝
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] Teachers often need to write with chalk on the blackboard during the teaching process. After writing, they need to use a chalk eraser to erase the chalk on the blackboard. During the process of wiping the blackboard, the chalk dust from the chalk eraser often flies around and pollutes the surrounding area. environment, increasing the difficulty of cleaning, and even if the person wiping the blackboard tries to hold his breath to prevent inhalation of chalk dust during the wiping process, he will still inevitably inhale some chalk dust, causing health risks
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] Such as figure 1 and Figure 8 As shown, a chalk eraser for automatically collecting chalk dust is provided with more than one elongated wiper strip 12 on the outer wall of the bottom plate 11 of the shell 1, the shell is hollow, and a plurality of wiper strips are arranged on the bottom plate around the wiper strip to communicate with the inner hole of the shell. The suction hole 13.
[0025] A cylindrical hollow equipment compartment 2 is arranged inside the housing, with openings at both ends of the equipment compartment, and an equipment cap 21 for closing the equipment compartment is provided at one open end. The equipment holes 14 corresponding to the openings at both ends are provided with a partition plate 3 at the bottom of the equipment compartment, so that a part of the equipment compartment is located below the partition plate, and a downwardly protruding surrounding edge is provided along the periphery of the partition plate 3. The equipment compartment a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A chalkboard eraser capable of automatically collecting chalk dust is characterized in that more than one long-bar-shaped erasing bars are arranged on an outer wall of a bottom plate of a housing; the housing is of a hollow structure; a plurality of suction holes communicating with inner holes of the housing are formed in the bottom plate and around the erasing bars; an equipment bin is arranged in the housing of the chalkboard eraser; a filter and a pressure boost bin are arranged in the equipment bin; one end of the filter is pressed on the pressure boost bin; a dust collection bin is arranged between the filter and the equipment bin; and during use of the chalkboard eraser, a switch is turned on, a pressure boost fan in the pressure boost bin works and sucks chalk dust, the chalk dust is filtered by the filter, the chalk dust is collected in the dust collection bin, air enters the filter, and the chalk dust is blown out via the pressure boost fan.
Description
technical field [0001] The invention relates to a chalk eraser capable of automatically collecting chalk dust used by teachers in the teaching process, which belongs to the optimization technology of the chalk eraser. Background technique [0002] Teachers often need to write with chalk on the blackboard during the teaching process. After writing, they need to use a chalk eraser to erase the chalk on the blackboard. During the process of wiping the blackboard, the chalk dust from the chalk eraser often flies around and pollutes the surrounding area. environment, increase the difficulty of cleaning, and even if the person wiping the blackboard tries to hold his breath to prevent from inhaling chalk dust, he will still inevitably inhale some chalk dust, which will give health risks. [0003] Therefore, need to look for a kind of chalk eraser that can avoid chalk dust flying everywhere. Contents of the invention [0004] The purpose of the invention is to provide a chalk era...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
Inventor 刘乐凝
Owner 刘乐凝