CN213277110U - Random ball taking device for probability teaching - Google Patents
Random ball taking device for probability teaching Download PDFInfo
- Publication number
- CN213277110U CN213277110U CN202022768691.3U CN202022768691U CN213277110U CN 213277110 U CN213277110 U CN 213277110U CN 202022768691 U CN202022768691 U CN 202022768691U CN 213277110 U CN213277110 U CN 213277110U
- Authority
- CN
- China
- Prior art keywords
- containing box
- air outlet
- fixedly connected
- filter screen
- outlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a random ball taking device for probability teaching, which comprises a base, wherein the four corners of the bottom of the base are fixedly connected with a bracket, the bottom end of the bracket is fixedly connected with a self-locking universal wheel, the top surface of the base is provided with a containing box, the inside of the containing box is fixedly connected with two clapboards, a first filter screen is fixedly connected at the inner bottom of the containing box between the opposite surfaces of the two clapboards, a second filter screen is fixedly connected at the bottom of the opposite surface of the inner side wall of the containing box, a first air outlet pipe is arranged at the inner top wall of the containing box above the first filter screen, second air outlet pipes are symmetrically arranged at the inner top wall of the containing box above the second filter screen, the top ends of the first air outlet pipe and the two second air outlet pipes penetrate through the top of the containing box and extend, the utility model can lead students to visually observe the whole random ball taking process, the teaching quality and the learning efficiency are greatly improved, the structure is simple, and the manufacturing cost is low.
Description
Technical Field
The utility model relates to a teaching aid technical field especially relates to a randomness device of getting ball for probability teaching.
Background
The probability science is a scientific technology for researching random events and is a branch of mathematics, the quantity law of random phenomena is researched, on one hand, the probability science has unique concepts and methods, on the other hand, the probability science is closely related to other mathematical branches and is an important component of modern mathematics, the probability science is widely applied to gambling, and the probability science is involved in daily life, such as employment, love negotiation, marriage, son, lottery, military and economy.
At present, also there are a great deal of teaching aids that are used for explaining probability theory randomness, for example throw the coin teaching aid, get ball teaching aid and similar randomness explanation teaching aid, but this type of teaching aid operation is complicated, and be not convenient for remove, when using in the classroom, very occupy the time of giving lessons, influence the teacher and give lessons efficiency, in addition, the teaching aid inner structure of current randomness is complicated, the cost is expensive, and the shell is opaque seal structure, the unable audio-visual whole process of observing of student, teaching quality and learning efficiency have greatly been influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a random ball taking device for probability teaching.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a random ball taking device for probability teaching comprises a base, wherein four corners of the bottom of the base are fixedly connected with a support, and the bottom end of the support is fixedly connected with a self-locking universal wheel;
the top surface of the base is provided with a containing box, two partition plates are fixedly connected inside the containing box, a first filter screen is fixedly connected between opposite surfaces of the two partition plates and positioned at the inner bottom of the containing box, a second filter screen is fixedly connected at the bottom end of each partition plate and the inner side wall of the containing box, a first air outlet pipe is arranged on the inner top wall of the containing box and positioned right above the first filter screen, and second air outlet pipes are symmetrically arranged on the inner top wall of the containing box and positioned right above the second filter screen;
the top ends of the first air outlet pipe and the two second air outlet pipes penetrate through the top of the containing box and extend, the extending ends of the first air outlet pipe and the two second air outlet pipes are fixedly connected with discharging pipes, and the opposite surfaces of the plurality of supports are fixedly connected with mounting plates together;
a first air pump is arranged on the top surface of the mounting plate under the first filter screens, second air pumps are symmetrically arranged on the top surface of the mounting plate under the two second filter screens, and air outlet pipes of the first air pump and the two second air pumps penetrate through the bottom of the base and the bottom of the containing box and extend;
the front that holds the case is located the fixedly connected with containing box under three discharging pipe, the front that holds the case is located the containing box and has seted up three blowing hole under.
As a further description of the above technical solution:
the containing box, the partition plate, the first air outlet pipe, the second air outlet pipe and the discharging pipe are all made of transparent plastics.
As a further description of the above technical solution:
the extension end face of the air outlet of the first air pump is smoothly attached to the bottom of the first filter screen, and the extension end face of the air outlet of the second air pump is smoothly attached to the bottom of the second filter screen.
As a further description of the above technical solution:
first play tuber pipe and second play tuber pipe are located the mouth of pipe that holds the case and are the funnel shape, the both sides of first filter screen and the outer wall fixed connection of two baffles, the both sides of two second filter screens and the outer wall of baffle and the inside wall fixed connection that holds the case.
As a further description of the above technical solution:
the containing box is fixedly connected with the containing box through screws, and the top of the containing box is provided with an opening.
As a further description of the above technical solution:
the penetrating positions of the first air pump and the second air pump air outlet pipe and the containing box are provided with damping washers, and the three discharging holes are provided with corresponding hole covers.
The utility model discloses following beneficial effect has: 1. the utility model discloses be provided with the auto-lock universal wheel, hold the case, the baffle, first air pump and two second air pumps, the baffle will hold incasement portion and separate a plurality of solitary spaces, blow to a plurality of spaces inside through first air pump and two second air pumps, blow inside polychrome plastics bobble and discharge from the export that corresponds, the teacher operation is got up very portably, reduces the time of giving lessons that occupies, simultaneously, can make the device remove at will through the auto-lock universal wheel.
2. The utility model discloses be provided with and hold case, baffle, first play tuber pipe, second play tuber pipe and discharging pipe, and hold case, baffle, first play tuber pipe, second play tuber pipe and discharging pipe and all adopt transparent plastic to make, when giving lessons, the student can audio-visual whole randomness of observation get the ball process, promote teaching quality and learning efficiency by a wide margin, simultaneously, the device simple structure, low in cost.
Drawings
Fig. 1 is a cross-sectional view of a random ball-fetching device for probability teaching according to the present invention;
fig. 2 is a front view of a random ball-fetching device for probability teaching according to the present invention;
fig. 3 is a side view of the random ball-fetching device for probability teaching of the present invention.
Illustration of the drawings:
1. a base; 2. a support; 3. a self-locking universal wheel; 4. an accommodating box; 5. a partition plate; 6. a first filter screen; 7. a second filter screen; 8. a first air outlet pipe; 9. a second air outlet pipe; 10. a discharge pipe; 11. mounting a plate; 12. a first air pump; 13. a second air pump; 14. a storage box; 15. and (7) a discharge hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: a random ball taking device for probability teaching comprises a base 1, a fixed containing box 4, a support 2 fixedly connected to four corners of the bottom of the base 1 for supporting weight, and a self-locking universal wheel 3 fixedly connected to the bottom end of the support 2 for facilitating movement of the device;
the top surface of the base 1 is provided with a containing box 4 for containing multi-color round balls, the containing box 4 is internally and fixedly connected with two partition plates 5 to divide the internal space of the containing box 4 into three independent spaces, a first filter screen 6 is fixedly connected at the inner bottom of the containing box 4 between the opposite surfaces of the two partition plates 5 to prevent the multi-color round balls from falling into a first air pump 12, a second filter screen 7 is fixedly connected at the bottom end of the opposite surface of the inner side wall of each partition plate 5 and the containing box 4 to prevent the multi-color round balls from falling into a second air pump 13, a first air outlet pipe 8 is arranged right above the first filter screen 6 on the inner top wall of the containing box 4, second air outlet pipes 9 are symmetrically arranged right above the second filter screen 7 on the inner top wall of the containing box 4, and the first air outlet pipe 8 and the second air outlet pipe 9;
the top ends of the first air outlet pipe 8 and the two second air outlet pipes 9 penetrate through the top of the containing box 4 and extend, the extending ends of the first air outlet pipe 8 and the two second air outlet pipes 9 are fixedly connected with a discharging pipe 10 for guiding flow, and the opposite surfaces of the plurality of brackets 2 are fixedly connected with a mounting plate 11 for fixing a first air pump 12 and two second air pumps 13;
a first air pump 12 is arranged on the top surface of the mounting plate 11 and is positioned right below the first filter screens 6, second air pumps 13 are symmetrically arranged on the top surface of the mounting plate 11 and is positioned right below the two second filter screens 7, and air outlet pipes of the first air pump 12 and the two second air pumps 13 penetrate through the bottom of the base 1 and the bottom of the containing box 4 and extend;
the front that holds case 4 is located under three discharging pipe 10 fixedly connected with containing box 14 and collects the polychrome ball that is blown off, holds the front that case 4 is located containing box 14 and has seted up three blowing hole 15 under, and the polychrome ball is put into the independent space that holds the inside correspondence of case 4 from three blowing hole 15.
The containing box 4, the partition plates 5, the first air outlet pipe 8, the second air outlet pipe 9 and the discharge pipe 10 are all made of transparent plastics so that students can visually observe the whole ball taking process, the extending end face of the air outlet of the first air pump 12 is smoothly attached to the bottom of the first filter screen 6, the extending end face of the air outlet of the second air pump 13 is smoothly attached to the bottom of the second filter screen 7, the first air outlet pipe 8 and the second air outlet pipe 9 are positioned at the pipe orifice of the containing box 4 and are in a funnel shape so that multicolor balls can enter the first air outlet pipe 8 and the second air outlet pipe 9, the two sides of the first filter screen 6 are fixedly connected with the outer walls of the two partition plates 5 so as to prevent the first filter screen 6 from being blown up, the two sides of the two second filter screens 7 are fixedly connected with the outer walls of the partition plates 5 and the inner side wall of the containing box 4 so as to prevent the two second filter screens 7 from being blown up, the containing, and the opening has been seted up at the top of containing box 14 and has been made things convenient for getting and put the polychrome ball, and the department that runs through of first air pump 12, 13 outlet ducts of second air pump and holding box 4 all is provided with the shaking force that shock washer alleviates first air pump 12, the production when second air pump 13 starts, and three blowing hole 15 all is furnished with the handhole door that corresponds.
The working principle is as follows: the utility model discloses a device is got to randomness for probability teaching, put into the independent space that holds 4 inside correspondences of case through three blowing hole 15 respectively with the polychrome ball of different quantity before the use and plug up it with the handhole door, then start first air pump 12 and two second air pumps 13, first air pump 12 and two second air pumps 13 blow to holding 4 inside three independent spaces of case, blow its inside polychrome ball, the polychrome ball that is blown up can give out through first play tuber pipe 8 and two second play tuber pipes 9 with single form and hold case 4, then give inside to containing box 14 via three discharging pipe 10 water conservancy diversion, when the teacher gives lessons, the probability is explained to the rate of accounting for the different colours of every independent space inside polychrome ball of accessible adjustment. The student can directly observe the whole process of taking the ball at random, and the teaching quality and the learning efficiency are greatly improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. A random ball taking device for probability teaching comprises a base (1) and is characterized in that four corners of the bottom of the base (1) are fixedly connected with a support (2), and the bottom end of the support (2) is fixedly connected with a self-locking universal wheel (3);
a containing box (4) is arranged on the surface of the top of the base (1), two partition plates (5) are fixedly connected inside the containing box (4), a first filter screen (6) is fixedly connected at the inner bottom of the containing box (4) between opposite surfaces of the two partition plates (5), a second filter screen (7) is fixedly connected at the bottom of the opposite surfaces of the inner side wall of each partition plate (5) and the containing box (4), a first air outlet pipe (8) is arranged right above the first filter screen (6) on the inner top wall of the containing box (4), and second air outlet pipes (9) are symmetrically arranged right above the second filter screen (7) on the inner top wall of the containing box (4);
the top ends of the first air outlet pipe (8) and the two second air outlet pipes (9) penetrate through the top of the accommodating box (4) and extend, the extending ends of the first air outlet pipe (8) and the two second air outlet pipes (9) are fixedly connected with a discharging pipe (10), and the opposite surfaces of the plurality of brackets (2) are fixedly connected with a mounting plate (11) together;
a first air pump (12) is arranged on the top surface of the mounting plate (11) and is positioned under the first filter screen (6), second air pumps (13) are symmetrically arranged on the top surface of the mounting plate (11) and is positioned under the two second filter screens (7), and air outlet pipes of the first air pump (12) and the two second air pumps (13) penetrate through the bottoms of the base (1) and the accommodating box (4) and extend;
the front of holding case (4) is located under three discharging pipe (10) fixedly connected with containing box (14), the front of holding case (4) is located under containing box (14) and has seted up three blowing hole (15).
2. The random ball fetching device for probability teaching according to claim 1, wherein the containing box (4), the partition plate (5), the first air outlet pipe (8), the second air outlet pipe (9) and the discharging pipe (10) are made of transparent plastics.
3. The random ball fetching device for probability teaching as claimed in claim 1, wherein the extending end face of the air outlet of the first air pump (12) is smoothly attached to the bottom of the first filter screen (6), and the extending end face of the air outlet of the second air pump (13) is smoothly attached to the bottom of the second filter screen (7).
4. The random ball taking device for probability teaching as claimed in claim 1, wherein the first air outlet pipe (8) and the second air outlet pipe (9) are located at the opening of the accommodating box (4) and are funnel-shaped, the two sides of the first filter screen (6) are fixedly connected with the outer walls of the two partition plates (5), and the two sides of the two second filter screens (7) are fixedly connected with the outer walls of the partition plates (5) and the inner side walls of the accommodating box (4).
5. The random ball fetching device for probability teaching as claimed in claim 1, wherein the containing box (14) is fixedly connected with the containing box (4) by screws, and the top of the containing box (14) is opened.
6. The random ball fetching device for probability teaching according to claim 1, wherein the penetration positions of the air outlet pipes of the first air pump (12) and the second air pump (13) and the containing box (4) are provided with shock-absorbing washers, and three discharging holes (15) are provided with corresponding hole covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022768691.3U CN213277110U (en) | 2020-11-25 | 2020-11-25 | Random ball taking device for probability teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022768691.3U CN213277110U (en) | 2020-11-25 | 2020-11-25 | Random ball taking device for probability teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213277110U true CN213277110U (en) | 2021-05-25 |
Family
ID=75954630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022768691.3U Expired - Fee Related CN213277110U (en) | 2020-11-25 | 2020-11-25 | Random ball taking device for probability teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213277110U (en) |
-
2020
- 2020-11-25 CN CN202022768691.3U patent/CN213277110U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207457227U (en) | Rainfall earthquake couples Analysis of Slope Stability experimental provision | |
| CN213277110U (en) | Random ball taking device for probability teaching | |
| CN210691753U (en) | Mathematics teaching probability presentation device | |
| CN210406551U (en) | Water circulation structure of multilayer hydroponic device | |
| CN206148005U (en) | Ware is demonstrated on inclined plane for physical teaching | |
| CN215155674U (en) | Medical kit for plant protection | |
| CN213519115U (en) | Information issuing fence is used in colleges and universities' teaching management | |
| CN206296156U (en) | Oscillatory type screening machine | |
| CN209912276U (en) | Probability distribution device is used in university's high number teaching | |
| CN215068732U (en) | Adjustable copper cable fault box | |
| CN214203152U (en) | English word teaching game frame | |
| CN216211788U (en) | Buoyancy and pressure intensity comprehensive demonstration device | |
| CN216596626U (en) | A Probability Statistics Apparatus for Applied Mathematics | |
| CN208388041U (en) | A kind of Music teaching aid case | |
| CN216456822U (en) | Equipment that ball transportation of sports was used | |
| CN210927889U (en) | Sound post used in open air for broadcast television equipment | |
| CN207165067U (en) | Experiments of Electricity circuit solid space innovative design demonstrator | |
| CN206762411U (en) | Water purifier filter flask support | |
| CN216352984U (en) | Plant transpiration water loss experimental apparatus | |
| CN220386573U (en) | Experimental apparatus storage device | |
| CN215526986U (en) | Agronomy class course grouping teaching aid | |
| CN215182705U (en) | Simulated water circulation experiment demonstrator | |
| CN216678276U (en) | Experimental equipment for researching liquid properties | |
| CN215650004U (en) | Test tube station frame with good anti-pollution effect | |
| CN202677678U (en) | Air buoyancy demonstrating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210525 Termination date: 20211125 |