CN112455124A

CN112455124A - Teaching is with liquid chalk of steerable flow

Info

Publication number: CN112455124A
Application number: CN202011430254.9A
Authority: CN
Inventors: 田晓芳
Original assignee: Tianjin Vocational Institute
Current assignee: Tianjin Vocational Institute
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-03-09

Abstract

The invention discloses a liquid chalk with controllable flow for teaching, which comprises: the pen-holder, the stopper, nib and cap for brush, the inside cavity of pen-holder, the pen-holder includes the stock solution chamber and installs the transfusion cavity in stock solution chamber below, communicate between stock solution chamber and the transfusion cavity, the bottom inner wall in stock solution chamber is formed with a stopper, and a spacing hole has been seted up at the center of this stopper, a floater is installed to the transfusion cavity, the floater cooperatees with spacing hole and is used for sealed stock solution chamber, an inflation sponge is installed to the transfusion cavity, the input of nib stretches into to the transfusion cavity and contacts with the inflation sponge, the cap for brush suit is connected in the outside of nib and with the nib head in order to be used for covering the nib. The liquid pigment is absorbed by the expansion sponge, so that the volume is expanded or the volume is shrunk after dehydration, the floating ball is controlled to float up and down to seal or open the liquid storage cavity, the pigment is continuously and stably supplied to the pen point, and the flow is stabilized by the expansion sponge.

Description

Teaching is with liquid chalk of steerable flow

Technical Field

The invention belongs to the technical field of teaching aids, and particularly relates to a liquid chalk with controllable flow for teaching.

Background

With the rapid development of science and technology, the teaching aid industry is promoted to develop rapidly. The chalk is used as a teaching tool commonly used in schools, is also commonly used as stationery for household or office, can also be used as a learning tool for children, and has larger use amount.

At present, the chalk used in China mainly comprises two types of common chalk and dust-free chalk, and the main components of the chalk are calcium sulfate and calcium carbonate or contain a small amount of calcium oxide. The dust-free chalk in the market is an improved product of common chalk, and polyols or grease substances are added into the common chalk as a binder, and then fillers with larger specific gravity, such as clay, cement, limestone and the like, are added, so that the specific gravity and the volume of chalk dust are increased, and the dust is not easy to disperse. However, most of the existing dustless chalks are dust chalk, the writing of the chalk is not wiped for a long time and can be dried, then dust is generated, the dust which is not easy to detect is often generated in use, the health of a user and people around the user can be affected or damaged, and pharyngolaryngitis and various lung diseases can be caused by excessive dust inhalation.

At present, a liquid chalk appears on the market, and the liquid chalk as a novel nontoxic, harmless, noiseless and dustless chalk has the advantages of environmental friendliness, cleanness, sanitation, fluent writing, clear writing, bright color, easiness in wiping, recyclability and the like. However, when the liquid chalk is used for writing, the pen point pigment is too fast or too slow to write smoothly, so that the classroom teaching quality is affected. The patent name of the liquid chalk with the publication number of CN209426412U is that the liquid chalk does not stop water supply during writing, and discloses the liquid chalk, after a pen point receives pressure, a miniature direct-current water pump is intelligently controlled to be started, pigment is extracted and then sprayed to a sponge block, however, the miniature direct-current water pump is not energy-saving and environment-friendly, and when a contact fails or a battery is not powered, the liquid chalk cannot be used, so that normal use is directly influenced.

Therefore, in order to solve the above technical problems, it is necessary to develop a liquid chalk which can control the flow rate stably during writing.

Disclosure of Invention

The invention aims to provide a teaching liquid chalk with controllable flow, which has a simple structure, can stably control the flow and has smooth writing.

The technical scheme of the invention is as follows:

a controllable-flow liquid chalk for teaching, comprising: the pen-holder, install the pen stopper in pen-holder upper end, install nib and the cap of the pen of cover outside the pen-holder lower extreme at the pen-holder lower extreme, the inside cavity of pen-holder, the pen-holder includes the stock solution chamber and installs the transfusion cavity in stock solution chamber below, communicate between stock solution chamber and the transfusion cavity, the bottom inner wall in stock solution chamber is formed with a stopper, and is formed with a spacing hole at the center of this stopper, install a floater in the transfusion cavity, the floater cooperatees with spacing hole and is used for plugging up this spacing hole, install an inflation sponge in the transfusion cavity, and this inflation sponge is located the below of floater, absorbs the abundant inflation back of liquid at the inflation sponge, promotes the floater card and goes into spacing inslot and plug up the spacing hole in stock solution cavity, the one end of nib is fixed at the transfusion cavity.

In the above technical solution, the limiting block is an annular block, and an inward edge of the annular block forms a downward-inclined limiting surface for cooperating with the floating ball.

In the technical scheme, the floating ball is in a hollow spherical shape, a conical shape or a disc shape and is used for floating up and down along with the liquid level change in the liquid storage cavity.

In the technical scheme, an internal thread is formed at the upper end of the pen holder, an external thread matched with the internal thread is formed outside the pen plug, and the pen plug is installed at the tail of the pen holder in a threaded mode.

In the technical scheme, the outer side of one end, close to the pen point, of the pen holder is in threaded connection with the anti-slip sleeve, external threads are formed on the outer portion of the anti-slip sleeve, internal threads are formed on the inner wall of the pen cap, and the pen cap is in threaded connection with the anti-slip sleeve.

In the technical scheme, the pen holder consists of a liquid storage rod and a transfusion rod, the bottom of the liquid storage rod is in threaded connection with the top of the transfusion rod, and the limiting block is located at the bottom of the liquid storage rod.

In the technical scheme, a T-shaped block is formed at the upper part of the pen point and inserted into the infusion cavity to fix the pen point.

In the technical scheme, the outer diameter of the T-shaped block is the same as the inner diameter of the infusion cavity, so that the T-shaped block of the pen point is tightly attached to the infusion cavity to prevent ink from leaking outwards.

The invention has the advantages and positive effects that:

1. the liquid pigment is absorbed by the expansion sponge, so that the volume is expanded or the volume is shrunk after dehydration, the floating ball is controlled to float up and down to seal or open the liquid storage cavity, the pigment is continuously and stably supplied to the pen point, and the flow is stabilized by the expansion sponge.

2, the T-shaped pen point is clamped in the infusion cavity, and compared with the traditional cylindrical pen point, the problem that the pen point is easy to loosen and fall off is effectively solved, and the service life of the liquid chalk is prolonged.

Drawings

FIG. 1 is a schematic structural view of a liquid chalk of the present invention;

FIG. 2 is a schematic structural view of a cartridge according to the present invention;

FIG. 3 is a schematic view of the nib of the present invention;

FIG. 4 is a top view of a retaining groove of the present invention.

In the figure:

1. pen plug 2, pen holder 3 and anti-skid sleeve

4. Pen head 5, pen cap 6, liquid storage cavity

7. Floater 8, stopper 9, transfusion cavity

10. External thread of expansion sponge 11 and anti-skid sleeve

Detailed Description

The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention in any way.

Example 1

As shown in the figure, the liquid chalk with controllable flow rate for teaching of the invention comprises: the pen holder 2, the pen plug 1 installed at the upper end of the pen holder 2, the pen point 4 installed at the lower end of the pen holder 2 and the pen cap 5 sleeved outside the lower end of the pen holder 2 are hollow, the pen holder 2 comprises a liquid storage cavity 6 and a transfusion cavity 9 installed below the liquid storage cavity 6, the liquid storage cavity 6 is communicated with the transfusion cavity 9, a limiting block 8 is formed on the inner wall of the bottom of the liquid storage cavity 6, a limiting hole is formed in the center of the limiting block 8, a floating ball 7 is installed in the transfusion cavity 9, the floating ball 7 is matched with the limiting hole to block the limiting hole, an expansion sponge 10 is installed in the transfusion cavity 9, the expansion sponge 10 is located below the floating ball 7, and after the expansion sponge 10 absorbs liquid and fully expands, the expansion sponge 7 is pushed to be clamped into the limiting groove to block the limiting hole of the liquid storage cavity 6; one end of the pen point 4 is fixed in the transfusion cavity 9 and is contacted with the expansion sponge 10, and the other end is positioned in the pen cap 5.

Further, the limiting block 8 is an annular block, and a limiting surface inclined downwards is formed at the edge of the inner side of the annular block and is used for being matched with the floating ball 7.

Further, the floating ball 7 is in a hollow spherical shape, a conical shape or a disc shape and is used for floating up and down along with the liquid level change in the liquid storage cavity 6.

Furthermore, an internal thread is formed at the upper end of the pen holder 2, an external thread matched with the internal thread is formed outside the pen plug 1, and the pen plug 1 is installed at the tail of the pen holder 2 in a threaded manner.

Furthermore, the outer side of one end, close to the pen point 4, of the pen holder 2 is in threaded connection with an anti-slip sleeve 3, an anti-slip sleeve external thread 11 is formed outside the anti-slip sleeve 3, an internal thread is formed on the inner wall of the pen cap 5, and the pen cap 5 is in threaded connection with the anti-slip sleeve 3.

The use method of the liquid chalk comprises the following steps:

the pen plug 1 is opened, liquid pigment is added into the liquid storage cavity 6, the liquid pigment enters the transfusion cavity 9 through the limiting hole of the liquid storage cavity 6, when the liquid dye is fully absorbed by the expansion sponge 10 in the transfusion cavity 9, the volume of the sponge expands and pushes the floating ball 7 positioned above the expansion sponge 10, so that the floating ball 7 floats upwards and enters the limit hole to seal the liquid storage cavity 6, so that the liquid in the liquid storage cavity 6 can not leak into the transfusion cavity 9, the pen head 4 supplies the writing pigment through the expansion sponge 10, when the liquid pigment adsorbed in the swelling sponge 10 becomes small, the swelling sponge 10 is reduced in volume to allow the floating ball 7 to fall down, so that the liquid pigment in the liquid storage cavity 6 falls down and enters the transfusion box, the pigment is continuously supplied to the pen point 4 through the expansion sponge 10, when no liquid chalk is needed, the cap 5 is screwed to prevent the pigment from volatilizing and prevent the expansion sponge 10 from drying to block the infusion cavity 9.

The pigment is cached through the expansion sponge 10, and the floating ball 7 is controlled to float up and down through the expansion sponge 10 so as to control whether the liquid pigment in the liquid storage cavity 6 can enter the transfusion cavity 9 or not, so that the liquid pigment is continuously and stably supplied to the pen point 4.

Example 2

On the basis of embodiment 1, with its difference lies in, pen-holder 2 comprises liquid storage pole and transfusion rod, the bottom of liquid storage pole and transfusion rod's top threaded connection, stopper 8 is located the bottom of liquid storage pole.

Furthermore, a T-shaped block is formed on the upper part of the pen head 4, and the T-shaped block is inserted into the transfusion cavity 9 for fixing the pen head 4.

Furthermore, the outer diameter of the T-shaped block is the same as the inner diameter of the transfusion cavity 9, so that the T-shaped block of the pen point 4 is tightly attached to the transfusion cavity 9 to prevent ink from leaking outwards.

Furthermore, a plurality of liquid conveying channels are formed in the T-shaped block of the pen head and used for conveying the liquid pigment of the swelling sponge into the pen head.

Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.

Claims

1. The utility model provides a teaching is with liquid chalk of steerable flow which characterized in that: including the pen-holder, install the pen stopper in the pen-holder upper end, install nib and the cap of a brush pen of cover outside the pen-holder lower extreme at the pen-holder lower extreme, the inside cavity of pen-holder, the pen-holder includes the stock solution chamber and installs the transfusion cavity in stock solution chamber below, communicate between stock solution chamber and the transfusion cavity, the bottom inner wall in stock solution chamber is formed with a stopper, and is formed with a spacing hole at the center of this stopper, install a floater in the transfusion cavity, the floater cooperatees with spacing hole and is used for plugging up this spacing hole, an inflation sponge is installed to the transfusion cavity, and this inflation sponge is located the below of floater, absorbs the abundant inflation back of liquid at the inflation sponge, promotes the floater card and goes into spacing inslot and plug up the spacing hole in stock solution cavity, the one end of nib is fixed and.

2. The liquid chalk of claim 1, wherein: the limiting block is an annular block, and a limiting surface which inclines downwards is formed at the edge of the inner side of the annular block and is used for being matched with the floating ball.

3. The liquid chalk of claim 2, characterized in that: the floating ball is hollow spherical, conical or disc-shaped and is used for floating up and down along with the liquid level change in the liquid storage cavity.

4. The liquid chalk of claim 3, characterized in that: an internal thread is formed at the upper end of the pen holder, an external thread matched with the internal thread is formed outside the pen plug, and the pen plug is installed at the tail of the pen holder in a threaded mode.

5. The liquid chalk of claim 4, characterized in that: the pen cap is characterized in that the outer side of one end, close to the pen point, of the pen holder is in threaded connection with an anti-slip sleeve, external threads are formed outside the anti-slip sleeve, internal threads are formed on the inner wall of the pen cap, and the pen cap is in threaded connection with the anti-slip sleeve.

6. The liquid chalk of claim 5, characterized in that: the pen holder comprises a liquid storage rod and a transfusion rod, the bottom of the liquid storage rod is in threaded connection with the top of the transfusion rod, and the limiting block is located at the bottom of the liquid storage rod.

7. The liquid chalk of claim 6, wherein: a T-shaped block is formed on the upper portion of the pen point and inserted into the infusion cavity to fix the pen point.

8. The liquid chalk of claim 7, wherein: the outer diameter of the T-shaped block is the same as the inner diameter of the transfusion cavity, so that the T-shaped block of the pen point is tightly attached to the transfusion cavity to prevent ink from leaking outwards.