CN210674389U

CN210674389U - Filter equipment that high school's science chemistry experiments were used

Info

Publication number: CN210674389U
Application number: CN201921215005.0U
Authority: CN
Inventors: 朱正义
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-06-05
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a filter equipment that high school's science chemistry experiments were used, including the erlenmeyer flask, the top of erlenmeyer flask is connected with the funnel through the sealing plug, the funnel is connected with the glass stick through supporting mechanism, the inside wall of funnel is attached to have the filter layer, the top of filter layer is equipped with fixed establishment. In the utility model, the bottom of the fixed rod is connected with the glass ring through the glass supporting rod by the cooperation of the glass ring, the glass supporting rod, the fixed rod, the funnel and the filter layer, the glass ring presses against the filter layer and is fixed on the inner side wall of the funnel, and the function that the filter layer always presses against the inner side of the funnel is realized; through the configuration of the filter layer, the glass fiber and the filter paper, the filter layer is changed into the filter paper when the device filters the solution mixed with weak acid and weak base, and the filter layer is changed into the glass fiber when the device filters the solution mixed with strong acid and strong base, so that the function of being suitable for filtering various solutions is realized.

Description

Filter equipment that high school's science chemistry experiments were used

Technical Field

The utility model relates to a high school's chemistry technical field especially relates to a filter equipment that high school's science chemistry experiments were used.

Background

The term "chemistry" is simply the "science of change" by literal interpretation, and chemistry is the basic science of natural science like physics, chemistry is a natural science based on experiments, and high school chemistry is a relatively important subject in high school science.

There are many experiments that need actual operation in high school's chemistry, wherein filter the experiment and be the most common experiment in high school's chemistry, the inside pressure of erlenmeyer flask diminishes often appears in filterable experiment, can lead to the inside filter paper of funnel to warp toward the inside direction of erlenmeyer flask, filter paper and the inside wall of funnel produce the gap, influence the filter effect, we are in filter the experiment usually, just can use filter paper to filter, but when filtering the solution that mixes strong base strong acid, the solution that mixes strong base strong acid can lead to the filter paper to damage, influence the filter effect.

Therefore, a filtering device for high school science and chemistry experiments is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the solution of the solution that has the gap and thoughtlessly has strong alkali strong acid in the experiment because there is the pressure difference filter paper and funnel inside wall to lead to the filter paper to damage among the prior art, and the filter equipment that the high school science chemistry experiment of proposing was used.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a filter equipment that high school's physical science chemistry experiments were used, includes the erlenmeyer flask, the top of erlenmeyer flask is connected with the funnel through the sealing plug, the funnel is connected with the glass stick through supporting mechanism, the inside wall of funnel is attached to has the filter layer, the top of filter layer is equipped with fixed establishment, supporting mechanism includes the glass hook of sliding connection at the funnel lateral wall, the bottom fixedly connected with connecting rod of glass hook, the lateral wall fixedly connected with first glass piece and the second glass piece of connecting rod, first glass piece is located the top of second glass piece, the top of first glass piece is equipped with the run-through mouth that is the slope setting that corresponds with the glass stick, the top of second glass piece is equipped with the slot that is the slope setting that corresponds with the glass stick, fixed establishment includes the glass ring, the inner wall of glass ring is connected with same dead lever through four glass branches, the outer side wall of the glass ring is abutted to the filter layer.

Preferably, the outer side wall of the conical flask is fixedly connected with a connecting pipe.

Preferably, the material of the filter layer is filter paper.

Preferably, the material of the filter layer is glass fiber.

The embodiment of the utility model provides a technical scheme can include following beneficial effect:

1. through the cooperation of the glass ring, the glass supporting rod, the fixing rod, the funnel and the filter layer, the effect that the bottom of the fixing rod is connected with the glass ring through the glass supporting rod, the glass ring is pressed against the filter layer and fixed on the inner side wall of the funnel is achieved, and the function that the filter layer is always pressed against the inner side of the funnel is achieved;

2. through the configuration of the filter layer, the glass fiber and the filter paper, the filter layer is changed into the filter paper when the device filters the solution mixed with weak acid and weak base, and the filter layer is changed into the glass fiber when the device filters the solution mixed with strong acid and strong base, so that the function of being suitable for filtering various solutions is realized.

Drawings

Fig. 1 is a schematic structural diagram of a filtering apparatus for high school science and chemistry experiments, which is provided by the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic view of the connection structure of the fixing rod, the glass ring and the glass support rod in the filtering device for the chemical experiment in the science of high school.

In the figure: the glass bottle comprises a conical bottle 1, a glass support rod 2, a connecting pipe 3, a sealing plug 4, a funnel 5, a filter layer 6, a glass ring 7, a fixing rod 8, a glass rod 9, a glass hook 10, a first glass block 11, a second glass block 12 and a connecting rod 13.

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.

Example one

Referring to fig. 1-3, a filtering device for high school science chemical experiments, which comprises a conical flask 1, the top of the conical flask 1 is connected with a funnel 5 through a sealing plug 4, the funnel 5 is connected with a glass rod 9 through a supporting mechanism, the supporting mechanism comprises a glass hook 10 connected to the outer side wall of the funnel 5 in a sliding manner, the bottom of the glass hook 10 is fixedly connected with a connecting rod 13, the outer side wall of the connecting rod 13 is fixedly connected with a first glass block 11 and a second glass block 12, the first glass block 11 is positioned above the second glass block 12, the top of the first glass block 11 is provided with a through hole which corresponds to the glass rod 9 and is arranged in an inclined manner, the top of the second glass block 12 is provided with a slot which corresponds to the glass rod 9 and is arranged in an inclined manner, the connecting rod 13 fixed to the bottom of the glass hook 10 is hung on the outer side wall of the funnel 5 through the glass hook 10, the outer side wall of the connecting rod 13 is fixedly connected with the first glass block, first glass piece 11 is on second glass piece 12, and the top of first glass piece 11 is equipped with the through-hole that sets up with the slope that glass stick 9 corresponds, and the top of second glass piece 12 is equipped with the slot that sets up with the slope that glass stick 9 corresponds, and glass stick 9 passes through the through-hole, and the bottom supports in the slot of the slope setting on second glass piece 12, has realized fixing glass stick 9 on funnel 5, and the state of glass stick 9 is the slope setting, is convenient for exert the effect of water conservancy diversion.

Wherein, the inner side wall of the funnel 5 is attached with a filter layer 6, the top of the filter layer 6 is provided with a fixing mechanism, the fixing mechanism comprises a glass ring 7, the inner wall of the glass ring 7 is connected with the same fixing rod 8 through four glass supporting rods 2, the outer side wall of the glass ring 7 is abutted against the filter layer 6, the filter layer 6 is made of filter paper, when weak base solution and weak acid solution are required to be filtered, the filter paper placed in the funnel 5 is abutted against the glass ring 7, the glass ring 7 is placed on the filter paper, the filter paper is pressed on the inner side wall of the funnel 5, no gap is kept between the filter paper and the inner side wall of the funnel 5, when the solution mixed with weak acid and weak base is filtered, the filter paper cannot deform downwards due to the small internal pressure of the conical flask 1, the filter paper deforms downwards, gaps can be generated between the filter paper and the inner side wall of the funnel 5, and the solution required to be filtered flows to, directly flows into the conical flask 1 without passing through the filter paper, resulting in poor filtering effect.

Wherein, the lateral wall fixedly connected with connecting pipe 3 of erlenmeyer flask 1, in the experiment now, in order to accelerate the filter velocity of device, can adopt the decompression to accelerate the mode of filter effect and filter, connecting pipe 3 through lateral wall fixed connection at erlenmeyer flask 1, a aspiration pump is connected to the one end that erlenmeyer flask 1 was kept away from to connecting pipe 3, take out the inside air of erlenmeyer flask 1, reduce the inside pressure of erlenmeyer flask 1, accelerate the speed that filtering solution enters into erlenmeyer flask 1 inside, probably inhale solution in the aspiration pump, so connecting pipe 3 extends into the inside partly of erlenmeyer flask 1, and the opening direction is down.

In the utility model, when the device is used for filtering, the filter paper is firstly cut, the filter paper is put into the funnel 5, the filter paper is wetted by water, then the filter paper is attached to the inner side wall of the funnel 5, the fixing rod 8 is taken up to press the glass ring 7 against the filter paper, the filter paper is tightly attached to the inner side wall of the funnel 5, the glass rod 9 penetrates through the through hole, the bottom of the glass rod is pressed against the obliquely arranged slot on the second glass block 12, the glass rod 9 is fixed on the funnel 5, the glass rod 9 is obliquely arranged to play a role in guiding flow, the beaker is attached to the glass rod 9 to pour the solution into the funnel 5, the air pump is started, the solution flows into the conical flask 1 along the pipeline at the bottom of the funnel 5 through the filter paper, because glass fiber is brittle and is easily broken when being stressed, the glass fiber is not adopted in the filtration of weak acid solution mixed with weak base.

Example two

The difference between this embodiment and the first embodiment is that the material of the filter layer 6 is glass fiber, and the first embodiment can only filter the solution mixed with weak base and weak acid, while the solution mixed with strong base and strong acid will burn out the filter paper, which will affect the filtering effect, and the glass fiber has better corrosion resistance, and will not react with the solution mixed with strong base and strong acid, so that the filtering effect will not be affected.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a filter equipment that high school's physical science chemistry experiments was used, includes erlenmeyer flask (1), its characterized in that, the top of erlenmeyer flask (1) is connected with funnel (5) through sealing plug (4), funnel (5) are connected with glass stick (9) through supporting mechanism, the inside wall of funnel (5) is attached to have filter layer (6), the top of filter layer (6) is equipped with fixed establishment, supporting mechanism includes glass hook (10) of sliding connection at funnel (5) lateral wall, the bottom fixedly connected with connecting rod (13) of glass hook (10), the lateral wall fixedly connected with of connecting rod (13) first glass piece (11) and second glass piece (12), first glass piece (11) are located the top of second glass piece (12), the top of first glass piece (11) is equipped with the through-hole that is the slope setting that corresponds with glass stick (9), the top of second glass piece (12) is equipped with the slot that is the slope setting that corresponds with glass stick (9), fixed establishment includes glass ring (7), the inner wall of glass ring (7) is connected with same dead lever (8) through four glass branch (2), the offset of the lateral wall and filter layer (6) of glass ring (7).

2. The filtering device for high school science chemical experiments according to claim 1, wherein the outer side wall of the erlenmeyer flask (1) is fixedly connected with a connecting pipe (3).

3. The filter device for high school science chemical experiments according to claim 1, wherein the material of the filter layer (6) is filter paper.

4. The filter device for high school science chemical experiments according to claim 1, wherein the material of the filter layer (6) is glass fiber.