CN210155937U - Device for demonstrating liquid flow speed of different viscosities - Google Patents
Device for demonstrating liquid flow speed of different viscosities Download PDFInfo
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- CN210155937U CN210155937U CN201920961240.6U CN201920961240U CN210155937U CN 210155937 U CN210155937 U CN 210155937U CN 201920961240 U CN201920961240 U CN 201920961240U CN 210155937 U CN210155937 U CN 210155937U
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Abstract
The utility model aims to solve the technical problem that a be used for demonstrating the demonstration of the liquid velocity of flow speed of different viscosities is fast slow is provided to be convenient for observe that liquid flows, reduces because of the error that the evaporation leads to, the timing of being convenient for. The device comprises a base, wherein a supporting rod is arranged on the base, an instrument frame is arranged at the upper end of the supporting rod, a plurality of pear-shaped separating funnels are arranged on the instrument frame, a plurality of containers are further arranged on the base, a storage cavity is further arranged on the base, and a cover plate is arranged in the storage cavity. When the device is used, the support rod is fixed on the base, the instrument frame is fixed on the support rod, the pear-shaped separating funnel is fixed and the sealing piston is closed, the container is placed under the pear-shaped separating funnel, different liquids with the same volume are added respectively, the sealing piston is opened, and the observation of which liquid flows out earlier is finished, so that an experiment conclusion is obtained. The operation is convenient and the device is suitable for being popularized in the field of primary school scientific teaching experimental equipment.
Description
Technical Field
The utility model belongs to the technical field of the scientific teaching experiment equipment of primary school and specifically relates to a presentation device that is used for demonstrating the liquid velocity of flow of different viscosity fast and slow.
Background
In conventional teaching, the flow rate is observed by dropping liquid drops of liquids with different viscosities on a glass plate. Because of the nature of the glass plate and the generation of the phenomenon of stirring and evaporation of the liquid during the flow, the quality of different liquid drops is different, and the flow rate of different liquid drops is disturbed. The glass plate is also susceptible to air, which also affects the comparison of results.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a be used for demonstrating the demonstration of the liquid velocity of flow speed of different viscosities is fast slow is provided to be convenient for observe that liquid flows, reduces because of the error that the evaporation leads to, the timing of being convenient for.
The utility model provides a technical scheme that its technical problem adopted does: the device for demonstrating the flow speed of the liquid with different viscosities comprises a base, wherein a supporting rod is arranged on the upper surface of the base and is perpendicular to the base, the lower end of the supporting rod is fixed on the left side of the upper surface of the base through a first detachable structure, an instrument holder is arranged at the upper end of the supporting rod and comprises a fixed rod, the left end of the fixed rod is fixed on the upper end of the supporting rod through a second detachable structure, the fixed rod is perpendicular to the supporting rod, a fixed plate for fixing a pear-shaped separating funnel is arranged at the right end of the fixed rod and is parallel to the base, the left end face of the fixed plate is fixedly connected with the right end of the fixed rod, a plurality of special-shaped through holes are arranged on the upper surface of the fixed plate, each special-shaped through hole completely penetrates through the fixed plate, the front end of the rectangular through hole extends to the front end face of the fixed plate, the rear end of the rectangular through hole extends to the side wall of the circular through hole, the rectangular through hole is communicated with the circular through hole, the diameter of the circular through hole is smaller than the maximum diameter of the bucket body of the pear-shaped separating funnel, the width of the rectangular through hole is larger than the maximum width of the sealing piston of the pear-shaped separating funnel, the shapes and the sizes of the special-shaped through holes are the same, the pear-shaped separating funnel is fixedly arranged in each special-shaped through hole, the pear-shaped separating funnel is perpendicular to the fixed plate, the device further comprises a plurality of containers arranged on the upper surface of the base, the number of the containers is equal to the number of the pear-shaped separating funnels, the containers and the pear-shaped separating funnels correspond to one another in the vertical direction, the distance between the lower end of the pear-shaped separating funnel and the base is larger than the height of the containers, the size of a plurality of pear shape separating funnels equals, the size of a plurality of containers equals, still be provided with the storing chamber on the base, the length in storing chamber is less than the length of base, the width in storing chamber is less than the width of base, the degree of depth in storing chamber is less than the thickness of base, the storing chamber is provided with the apron, the apron with the storing chamber phase-match, the upper surface of apron and the upper surface coincidence of base.
Further, first detachable construction is including setting up the rectangle recess at the base upper surface, the length phase-match of the length of rectangle recess and the lower terminal surface of bracing piece, the width phase-match of the width of rectangle recess and the lower terminal surface of bracing piece, the degree of depth of rectangle recess is less than the thickness of base, bracing piece and rectangle recess interference fit, when the lower extreme of bracing piece is located the rectangle recess, bracing piece vertical fixation is on the base, there is the clearance in the left side wall in storing chamber and the right side wall of rectangle recess.
Further, second detachable construction is including setting up the through-hole in bracing piece left surface upper end, the central axis and the dead lever mutually perpendicular of through-hole, the diameter of through-hole is less than the diameter of dead lever, still including setting up the screw rod at the dead lever left end, the fixed setting of right-hand member of screw rod is on the left end face of dead lever, the diameter of screw rod is less than the diameter of dead lever, the diameter of screw rod and the diameter phase-match of through-hole, the length of screw rod is greater than the degree of depth of through-hole, the left end of screw rod passes the through-hole and outwards extends, still be provided with fastening nut on the screw rod, fastening nut and screw rod phase-match, fastening nut is.
Furthermore, a plurality of timers are arranged on the surface of the fixing plate, the number of the timers is the same as that of the pear-shaped separating funnels, and one timer is arranged on one side of each pear-shaped separating funnel.
Further, the number of the plurality of the special-shaped through holes is two, and the number of the plurality of the timers is two.
The utility model has the advantages that: when the demonstrating device for demonstrating the flow speed of liquid with different viscosities is used, a supporting rod is fixed on a base through a first detachable structure, then an instrument frame is fixed at the upper end of the supporting rod, the instrument frame comprises a fixing rod, the left end of the fixing rod is fixed at the upper end of the supporting rod through a second detachable structure, the fixing rod is perpendicular to the supporting rod, a fixing plate for fixing a pear-shaped separating funnel is arranged at the right end of the fixing rod, the fixing plate is arranged in parallel with the base, the left end face of the fixing plate is fixedly connected with the right end of the fixing rod, a plurality of special-shaped through holes are arranged on the upper surface of the fixing plate, each special-shaped through hole completely penetrates through the fixing plate, each special-shaped through hole comprises a circular through hole and a rectangular through hole, the front end of the rectangular through hole extends to the front end face of the fixing plate, the rear, the diameter of the circular through hole is smaller than the maximum diameter of the pear-shaped separating funnel body, the width of the rectangular through hole is larger than the maximum width of a sealing piston of the pear-shaped separating funnel, the shape and the size of the plurality of special-shaped through holes are the same, the pear-shaped separating funnel is fixed on a fixed plate, the sealing piston of the pear-shaped separating funnel is closed, then a container is placed under the pear-shaped separating funnel, different liquids with the same volume are added into the pear-shaped separating funnels respectively, the sealing pistons of the pear-shaped separating funnels are opened simultaneously, which pear-shaped separating funnel is observed to have the liquid in the pear-shaped separating funnel flow out first, and therefore a corresponding experimental conclusion is obtained, the learning interest of students is stimulated conveniently, the learning efficiency is improved, after the experiment is finished, a supporting rod, the fixed plate, the pear-shaped separating funnel and the container are detached and placed into a storage cavity arranged on the, and the cover plate is covered, so that the storage is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a demonstration device for demonstrating the flow rate of liquids with different viscosities;
FIG. 2 is a front view of the device for demonstrating the flow rate of liquids of different viscosities;
FIG. 3 is a schematic view of a partial structure of a demonstration apparatus for demonstrating the flow rate of liquids with different viscosities;
fig. 4 is a schematic structural diagram of the bottom plate of the present invention;
the notation in the figure is: the device comprises a base 1, a support rod 2, an instrument frame 3, a fixing rod 301, a fixing plate 302, a special-shaped through hole 4, a rectangular through hole 401, a round through hole 402, a pear-shaped separating funnel 5, a container 6, a storage cavity 7, a cover plate 8, a rectangular groove 9, a screw rod 10, a fastening nut 11 and a timer 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, 2, 3, and 4, the device for demonstrating the flow rate of liquids with different viscosities comprises a base 1, wherein a support rod 2 is arranged on the upper surface of the base 1, the support rod 2 is arranged perpendicular to the base 1, the lower end of the support rod 2 is fixed on the left side of the upper surface of the base 1 through a first detachable structure, an instrument holder 3 is arranged at the upper end of the support rod 2, the instrument holder 3 comprises a fixed rod 301, the left end of the fixed rod 301 is fixed on the upper end of the support rod 2 through a second detachable structure, the fixed rod 301 is perpendicular to the support rod 2, the right end of the fixed rod 301 is provided with a fixed plate 302 for fixing a pear-shaped separating funnel 5, the fixed plate 302 is arranged parallel to the base 1, the left end surface of the fixed plate 302 is fixedly connected with the right end of the fixed rod 301, the upper surface of the, each special-shaped through hole 4 completely penetrates through the fixing plate 302, each special-shaped through hole 4 comprises a circular through hole 402 and a rectangular through hole 401, the front end of each rectangular through hole 401 extends to the front end face of the fixing plate 302, the rear end of each rectangular through hole 401 extends to the side wall of each circular through hole 402, each rectangular through hole 401 is communicated with each circular through hole 402, the diameter of each circular through hole 402 is smaller than the maximum diameter of the bucket body of the pear-shaped separating funnel 5, the width of each rectangular through hole 401 is larger than the maximum width of a sealing piston of the pear-shaped separating funnel 5, the shape and the size of each special-shaped through hole 4 are identical, a pear-shaped separating funnel 5 is fixedly arranged in each special-shaped through hole 4, the pear-shaped separating funnels 5 are perpendicular to the fixing plate 302, the special-shaped separating funnels further comprise a plurality of containers 6 arranged on the upper surface of the base 1, a plurality of containers 6 and a plurality of pear shape separating funnel 5 one-to-one in vertical direction, the distance between the lower extreme of pear shape separating funnel 5 and the base 1 is greater than the height of container 6, pear shape separating funnel 5 and container 6 all adopt transparent material to make, a plurality of pear shape separating funnel 5 sizes equal, the size of a plurality of containers 6 equals, still be provided with storing chamber 7 on the base 1, the length of storing chamber 7 is less than base 1's length, the width of storing chamber 7 is less than base 1's width, the degree of depth in storing chamber 7 is less than base 1's thickness, storing chamber 7 is provided with apron 8, apron 8 with storing chamber 7 phase-match, the upper surface of apron 8 and base 1's upper surface coincidence. When the demonstration device for demonstrating the flow speed of the liquid with different viscosities is used, the support rod 2 is fixed on the base 1 through the first detachable structure, the instrument holder 3 is fixed at the upper end of the support rod 2, the instrument holder 3 comprises the fixing rod 301, the left end of the fixing rod 301 is fixed at the upper end of the support rod 2 through the second detachable structure, the fixing rod 301 and the support rod 2 are perpendicular to each other, the right end of the fixing rod 301 is provided with the fixing plate 302 for fixing the pear-shaped separating funnel 5, the fixing plate 302 is arranged in parallel to the base 1, the left end face of the fixing plate 302 is fixedly connected with the right end of the fixing rod 301, the upper surface of the fixing plate 302 is provided with a plurality of special-shaped through holes 4, each special-shaped through hole 4 completely penetrates through the fixing plate 302, each special-shaped through hole 4 comprises a circular through hole 402 and a rectangular through hole 401, and, the rear end of the rectangular through hole 401 extends to the side wall of the circular through hole 402, the rectangular through hole 401 is communicated with the circular through hole 402, the diameter of the circular through hole 402 is smaller than the maximum diameter of the bucket body of the pear-shaped separating funnel 5, the width of the rectangular through hole 401 is larger than the maximum width of a sealing piston of the pear-shaped separating funnel 5, the shape and the size of the special-shaped through holes 4 are the same, the pear-shaped separating funnel 5 is fixed on the fixing plate 302, the sealing piston of the pear-shaped separating funnel 5 is closed, the container 6 is placed under the pear-shaped separating funnel 5, different liquids with the same volume are respectively added into the pear-shaped separating funnels 5, the sealing pistons of the pear-shaped separating funnels 5 are opened simultaneously, and the liquid in which pear-shaped separating funnel 5 flows out first is observed, so that a corresponding experimental conclusion is obtained, and the learning interest of students is stimulated conveniently, improve learning efficiency, after waiting to test, pull down bracing piece 2, fixed plate 302, pear shape separating funnel 5, container 6, put into the storing chamber 7 of setting on the bottom plate to cover apron 8, be convenient for deposit.
In the above embodiment, first detachable construction is including setting up the rectangle recess 9 at base 1 upper surface, the length of rectangle recess 9 and the length phase-match of the lower terminal surface of bracing piece 2, the width of rectangle recess 9 and the width phase-match of the lower terminal surface of bracing piece 2, the degree of depth of rectangle recess 9 is less than base 1's thickness, bracing piece 2 and the interference fit of rectangle recess 9, when the lower extreme of bracing piece 2 is located rectangle recess 9, 2 vertical fixation of bracing piece are on base 1, there is the clearance left side wall of storing chamber 7 and the right side wall of rectangle recess 9, only need during the use with the lower extreme of bracing piece 2 insert in the rectangle recess 9 can.
The second detachable structure in the embodiment includes the through-hole that sets up in bracing piece 2 left side surface upper end, the central axis and the dead lever 301 mutually perpendicular of through-hole, the diameter of through-hole is less than the diameter of dead lever 301, still including setting up the screw rod 10 at the dead lever 301 left end, the right-hand member of screw rod 10 is fixed to be set up on the left end face of dead lever 301, the diameter of screw rod 10 is less than the diameter of dead lever 301, the diameter of screw rod 10 and the diameter phase-match of through-hole, the length of screw rod 10 is greater than the degree of depth of through-hole, the left end of screw rod 10 passes the through-hole and outwards extends, still be provided with fastening nut 11 on the screw rod 10, fastening nut 11 and screw rod 10 phase-match. When the screw rod is fixed, only the free end of the screw rod 10 needs to penetrate through the through hole, then the fastening nut 11 is screwed tightly, and when the screw rod is disassembled, the fastening nut 11 is loosened and separated from the screw rod 10, and then the screw rod can be disassembled.
The method for obtaining experimental conclusion may also adopt a time comparison method, in addition to a direct comparison method, for which a plurality of timers 12 are provided on the surface of the fixing plate 302, the number of the timers 12 is the same as that of the pear-shaped separatory funnels 5, and one timer 12 is provided on one side of each pear-shaped separatory funnel 5. The experimental conclusion can also be drawn by comparing the time.
According to the specific operation of the experiment, the number of the plurality of the special-shaped through holes 4 is two, and the number of the plurality of the timers 12 is two.
Claims (5)
1. A demonstration device for demonstrating how fast liquid flow rate of different viscosities is characterized in that: comprises a base (1), the upper surface of the base (1) is provided with a support rod (2), the support rod (2) is arranged perpendicular to the base (1), the lower end of the support rod (2) is fixed on the left side of the upper surface of the base (1) through a first detachable structure, the upper end of the support rod (2) is provided with an instrument frame (3), the instrument frame (3) comprises a fixed rod (301), the left end of the fixed rod (301) is fixed on the upper end of the support rod (2) through a second detachable structure, the fixed rod (301) is mutually perpendicular to the support rod (2), the right end of the fixed rod (301) is provided with a fixed plate (302) for fixing a pear-shaped separating funnel (5), the fixed plate (302) is arranged parallel to the base (1), the left end surface of the fixed plate (302) is fixedly connected with the right end of the fixed rod (301), the special-shaped upper surface of the fixed plate (302, each special-shaped through hole (4) completely penetrates through the fixing plate (302), each special-shaped through hole (4) comprises a circular through hole (402) and a rectangular through hole (401), the front end of each rectangular through hole (401) extends to the front end face of the fixing plate (302), the rear end of each rectangular through hole (401) extends to the side wall of the circular through hole (402), the rectangular through holes (401) are communicated with the circular through holes (402), the diameter of each circular through hole (402) is smaller than the maximum diameter of a bucket body of the pear-shaped separating funnel (5), the width of each rectangular through hole (401) is larger than the maximum width of a sealing piston of the pear-shaped separating funnel (5), the shape and the size of the special-shaped through holes (4) are identical, the pear-shaped separating funnel (5) is fixedly arranged in each special-shaped through hole (4), the pear-shaped separating funnel (5) is perpendicular to the fixing plate (302), and the special-shaped separating funnel further comprises a plurality of containers (6, the quantity of a plurality of containers (6) is equal to the quantity of a plurality of pear-shaped separating funnels (5), the containers (6) are in one-to-one correspondence with the pear-shaped separating funnels (5) in the vertical direction, the distance between the lower ends of the pear-shaped separating funnels (5) and the base (1) is greater than the height of the containers (6), the pear-shaped separating funnels (5) and the containers (6) are made of transparent materials, the pear-shaped separating funnels (5) are equal in size, the containers (6) are equal in size, a storage cavity (7) is further arranged on the base (1), the length of the storage cavity (7) is smaller than that of the base (1), the width of the storage cavity (7) is smaller than that of the base (1), the depth of the storage cavity (7) is smaller than that of the base (1), and a cover plate (8) is arranged on the storage cavity (7), the cover plate (8) is matched with the storage cavity (7), and the upper surface of the cover plate (8) is overlapped with the upper surface of the base (1).
2. The demonstration apparatus for demonstrating the rapidity of the flow of liquids of different viscosities according to claim 1 wherein: first detachable construction is including setting up rectangle recess (9) at base (1) upper surface, the length of rectangle recess (9) and the length phase-match of the lower terminal surface of bracing piece (2), the width of rectangle recess (9) and the width phase-match of the lower terminal surface of bracing piece (2), the degree of depth of rectangle recess (9) is less than the thickness of base (1), bracing piece (2) and rectangle recess (9) interference fit, when the lower extreme of bracing piece (2) is located rectangle recess (9), bracing piece (2) vertical fixation is on base (1), there is the clearance in the left side wall of storing chamber (7) and the right side wall of rectangle recess (9).
3. The demonstration apparatus for demonstrating the rapidity of the flow of liquids of different viscosities according to claim 2 wherein: the second detachable structure comprises a through hole arranged at the upper end of the left side surface of the support rod (2), the central axis of the through hole is vertical to the fixed rod (301), the diameter of the through hole is smaller than that of the fixed rod (301), the screw rod (10) is arranged at the left end of the fixed rod (301), the right end of the screw rod (10) is fixedly arranged on the left end surface of the fixed rod (301), the diameter of the screw rod (10) is smaller than that of the fixing rod (301), the diameter of the screw rod (10) is matched with that of the through hole, the length of the screw rod (10) is larger than the depth of the through hole, the left end of the screw rod (10) passes through the through hole and extends outwards, the support rod is characterized in that a fastening nut (11) is further arranged on the screw rod (10), the fastening nut (11) is matched with the screw rod (10), and the fastening nut (11) is located on the left side of the support rod (2).
4. A demonstration device for demonstrating the rapidity of the flow of liquids of different viscosities according to claim 3, wherein: the fixed plate (302) surface is provided with a plurality of timers (12), the quantity of timers (12) is the same with the quantity of pear shape separating funnel (5), and one side of every pear shape separating funnel (5) sets up one timer (12).
5. The demonstration apparatus for demonstrating the rapidity of the flow of liquids of different viscosities according to claim 4 wherein: the number of the special-shaped through holes (4) is two, and the number of the timers (12) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920961240.6U CN210155937U (en) | 2019-06-25 | 2019-06-25 | Device for demonstrating liquid flow speed of different viscosities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920961240.6U CN210155937U (en) | 2019-06-25 | 2019-06-25 | Device for demonstrating liquid flow speed of different viscosities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210155937U true CN210155937U (en) | 2020-03-17 |
Family
ID=69764095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920961240.6U Expired - Fee Related CN210155937U (en) | 2019-06-25 | 2019-06-25 | Device for demonstrating liquid flow speed of different viscosities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210155937U (en) |
-
2019
- 2019-06-25 CN CN201920961240.6U patent/CN210155937U/en not_active Expired - Fee Related
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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: 20200317 Termination date: 20200625 |