CN217489924U - Air pressure filter flask - Google Patents

Abstract

The utility model discloses an atmospheric pressure filter flask, including the erlenmeyer flask, the erlenmeyer flask include the main part on upper portion and set up in the main part bottom and with the main part between can dismantle the cone of being connected, the main part bottom is equipped with first perforated plate, the inside second perforated plate that is equipped with of cone, first perforated plate with be equipped with the filter paper that is used for filtering the material that awaits measuring between the second perforated plate. The main body part and the conical head are separated, so that a filtered sample can be replaced in time, and the filtering speed is improved. When the salinity of the sample is larger, the filtering speed is reduced, the filter paper can be replaced in time, and the filtering speed is increased. Meanwhile, the filter area can be reduced, so that the adsorption of substances to be detected is reduced, and the experimental accuracy is improved.

Description

Air pressure filter flask

Technical Field

The utility model belongs to the technical field of the chemical analysis experiment technique and specifically relates to a barofiltration bottle.

Background

At present, the leaching and filtration of effective iron, manganese, copper, zinc, cobalt, nickel, lead and cadmium in soil are measured, and 10.0g (accurate to 0.01g) of sample is weighed and placed in a 100ml triangular flask. 20.0ml of the extract was added and the stopper was closed. Oscillating for 2 hours at the oscillation frequency of 160 r/min-200 r/min under the condition of 20 ℃ and 2 ℃. And (4) performing gravity filtration on the leaching liquor by using medium-speed quantitative filter paper, and then determining within 48 hours.

The current pretreatment process for measuring hexavalent chromium in soil is to accurately weigh 5.0g (accurate to 0.01g) of sample and place the sample in a 250ml beaker, add 50.0ml of alkaline extraction solution, and add 400mg of magnesium chloride and 0.5ml of dipotassium hydrogen phosphate-potassium dihydrogen phosphate buffer solution. Putting in a stirrer, sealing with polyethylene film, and placing on a stirring and heating device. And stirring the sample at normal temperature for 5min, starting a heating device, heating and stirring to 90-95 ℃, and keeping for 60 min. The beaker was removed and cooled to room temperature. The filtrate was filtered with suction through a filter membrane, placed in a 250m1 beaker and the pH of the solution was adjusted to 7.5+0.5 with nitric acid (5.1). The solution was transferred to a 100ml volumetric flask, water was added to a constant volume to the marked line, shaken up and tested.

However, the existing experimental process has the following problems: 1. the use of the funnel and the large-area filter paper can cause pollution or high blank, the filter paper has more adsorption capacity to the substance to be tested, the accuracy of the experiment is low, and the cost is high; 2. the speed of solution filtration is slow.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide an air pressure filter flask, and meanwhile, the air pressure can accelerate the solution filtering speed, so that the pretreatment efficiency can be greatly improved; the use amount of the filter paper is reduced, the adsorption of the filter paper on a substance to be detected is reduced, the accuracy of an experiment is improved, and the experiment cost is reduced.

The utility model provides a technical scheme that its technical problem adopted is:

the air pressure filter bottle comprises a conical bottle body, wherein the conical bottle body comprises a main body part at the upper part and a conical head which is arranged at the bottom of the main body part and is detachably connected with the main body part, a first porous plate is arranged at the bottom of the main body part, a second porous plate is arranged in the conical head, and filter paper for filtering a substance to be detected is arranged between the first porous plate and the second porous plate;

further, the main body part is connected with a pneumatic pump through a pipeline.

Furthermore, the main body part is in threaded connection with the conical head, the main body part and the conical head are convenient to disassemble, and filter paper can be replaced in time.

Further, the pipeline includes trunk line and branch road pipeline, branch road pipeline and main part one-to-one, branch road pipeline one end and main part intercommunication, the branch road pipeline other end and trunk line intercommunication, the trunk line is connected with the pneumatic pump output, be equipped with the switch on the branch road pipeline.

Further, the device also comprises a bracket for supporting the conical bottle.

Furthermore, the support is divided into an upper layer and a lower layer, a conical groove is arranged at the position, corresponding to the conical head, on the upper layer of the support, and the conical groove is matched with the lower end of the conical head.

Furthermore, the lower layer is provided with a measuring flask which is matched with the opening at the bottom of the conical head and is used for receiving the filtered liquid, and the measuring flask is in one-to-one correspondence with the conical flask.

The utility model has the advantages that:

1. the utility model discloses a conical flask, conical flask include the main part on upper portion and set up in the main part bottom and with the main part between can dismantle the cone of being connected, the main part bottom is equipped with first perforated plate, the inside second perforated plate that is equipped with of cone, first perforated plate with be equipped with the filter paper that is used for filtering the material that awaits measuring between the second perforated plate. The main body part and the conical head are separated, so that a filtered sample can be replaced in time, and the filtering speed is improved. When the salinity of the sample is larger, the filtering speed is reduced, the filter paper can be replaced in time, and the filtering speed is increased. Meanwhile, the filter area can be reduced, so that the adsorption of substances to be detected is reduced, and the experimental accuracy is improved.

2. The utility model discloses well main part passes through the pipeline and is connected with the pneumatic pump. The pneumatic pump pressurizes in the main part through the pipeline, adopts pressure type filter-pressing mode filtration design, reduces the experiment cost when can improve work efficiency greatly.

3. The utility model discloses well pipeline includes trunk line and branch road pipeline, branch road pipeline and main part one-to-one, branch road pipeline one end and main part intercommunication, the branch road pipeline other end and trunk line intercommunication, the trunk line is connected with the pneumatic pump output, be equipped with the switch on the branch road pipeline, a plurality of branch road pipeline sets up side by side, can carry out the filter-pressing simultaneously, and is efficient, closes the gas circuit switch after certain filter-pressing bottle filter-pressing is accomplished, changes the next sample of waiting to strain.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a front view of the present invention;

fig. 3 is a cross-sectional view of the utility model of a conical flask.

In the figure: the measuring bottle comprises a main body part 1, a conical head 2, a first porous plate 3, a second porous plate 4, filter paper 5, a main pipeline 6, a pneumatic pump 7, a branch pipeline 8, a switch 9, a support 10, a conical groove 11 and a measuring bottle 12.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in 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 only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1 and 3, the air pressure filter flask comprises a conical flask, wherein the conical flask comprises a main body part 1 at the upper part and a conical head 2 which is arranged at the bottom of the main body part 1 and is detachably connected with the main body part 1, a first porous plate 3 is arranged at the bottom of the main body part 1, a second porous plate 4 is arranged inside the conical head 2, and a filter paper 5 for filtering a substance to be measured is arranged between the first porous plate 3 and the second porous plate 4;

the main body part 1 and the conical head 2 are separated, so that a filtered sample can be replaced in time, and the filtering speed is improved. When the salinity of the sample is larger and the filtering speed is reduced, the filter paper can be replaced in time, and the filtering speed is increased. Meanwhile, the filter area can be reduced, so that the adsorption of substances to be detected is reduced, and the experimental accuracy is improved.

As shown in fig. 1, the main body 1 is connected to a pneumatic pump 7 through a pipe.

The pneumatic pump 7 pressurizes the main body part 1 through a pipeline, and the pressure type filter pressing mode is adopted for filtering design, so that the working efficiency can be greatly improved, and meanwhile, the experiment cost is reduced.

As shown in fig. 3, the main body 1 is connected with the conical head 2 by a screw thread, so that the main body 1 and the conical head 2 can be conveniently detached, filter paper can be replaced in time, and the main body 1 can be conveniently taken down by the screw thread connection to replace the filter paper.

As shown in fig. 1, the pipeline includes trunk line 6 and branch road pipeline 8, branch road pipeline 8 and main part 1 one-to-one, 8 one ends of branch road pipeline communicate with main part 1, the 8 other ends of branch road pipeline communicate with trunk line 6, trunk line 6 is connected with the 7 output ends of pneumatic pump, be equipped with switch 9 on the branch road pipeline 8, a plurality of branch road pipeline 8 sets up side by side, can carry out the filter-pressing simultaneously, and is efficient, closes the gas circuit switch after certain filter-pressing bottle filter-pressing is accomplished, changes the next sample of waiting to strain.

As shown in fig. 2, a support 10 for supporting the erlenmeyer flask is also included. The support is divided into an upper layer and a lower layer, a conical groove 11 is formed in the position, corresponding to the conical head 2, of the support 10 on the upper layer, the conical groove 11 is matched with the lower end of the conical head 2, and the conical groove 11 is used for supporting the conical head 2 and does not need to be held by hands. And the lower layer of the bracket 10 is provided with measuring bottles 12 which are matched with the bottom openings of the conical heads 2 and used for receiving filtered liquid, and the measuring bottles 12 correspond to the conical bottles one to one.

In the description of the present invention, it should be noted that the terms "left", "right", "upper", "lower", 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 in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified 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; they may be mechanically or electrically connected, directly or indirectly through intervening media, or 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.

Claims (6)

1. The air pressure filter flask is characterized by comprising a conical flask, wherein the conical flask comprises a main body part (1) at the upper part and a conical head (2) which is arranged at the bottom of the main body part (1) and is detachably connected with the main body part (1), a first porous plate (3) is arranged at the bottom of the main body part (1), a second porous plate (4) is arranged in the conical head (2), and a filter paper (5) for filtering a substance to be detected is arranged between the first porous plate (3) and the second porous plate (4);

the main body part (1) is connected with a pneumatic pump (7) through a pipeline.

2. A pneumatic filter flask as in claim 1, wherein the main body (1) is screwed to the conical head (2), the main body (1) and the conical head (2) are easy to detach, and the filter paper can be replaced in time.

3. A pneumatic filter flask as claimed in claim 1, wherein said pipeline comprises a main pipeline (6) and branch pipelines (8), said branch pipelines (8) are in one-to-one correspondence with said main body portion (1), one end of each branch pipeline (8) is communicated with said main body portion (1), the other end of each branch pipeline (8) is communicated with said main pipeline (6), said main pipeline (6) is connected with the output end of said pneumatic pump (7), and said branch pipelines (8) are provided with switches (9).

4. A gas pressure filter flask according to claim 1, further comprising a holder (10) for holding the flask.

5. A pneumatic filter flask as in claim 4, wherein said frame is divided into an upper and a lower layer, and a tapered slot (11) is provided on the upper layer of said frame (10) at a position corresponding to the tapered head (2), said tapered slot (11) being engaged with the lower end of the tapered head (2).

6. A pneumatic filter flask as in claim 5, wherein the lower support (10) is provided with a measuring flask (12) which is matched with the bottom opening of the conical head (2) for receiving the filtered liquid, and the measuring flasks (12) are in one-to-one correspondence with the conical flasks.

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