Filter for analytical chemistry

Abstract

The utility model relates to the technical field of filters, in particular to a filter for analytical chemistry, which is used for filtering liquid contained in a beaker and comprises a funnel and a drainage rod arranged in the funnel. The filter further comprises a drainage sleeve, a liquid flow opening and a plug body used for plugging the liquid flow opening are formed in the drainage sleeve, the spliced beaker and the drainage sleeve are inversely buckled on the funnel, the bottom end of the barrel body is inserted into the ring body, the end wall of the bottom end of the barrel body is in contact with the inner ring piece, and the inner ring piece is in contact with the bottom end of the barrel body. The top end of the drainage rod is aligned to the liquid flow opening of the partition plate in the inverted buckling process of the barrel, after the barrel is inverted, the top end of the drainage rod upwards jacks the plug body, and at the moment, liquid to be filtered in the beaker flows to the drainage rod through the liquid flow opening and then flows to the filter paper through guiding of the drainage rod to be filtered through the filter paper.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a filter for analytical chemistry. Background Technology

[0002] In analytical chemistry experiments, filtration is a common method for separating solids and liquids and is widely used in various experimental operations. Traditional filtration equipment, such as funnels, filter paper, and glass bottles, has become standard equipment in laboratories.

[0003] In this type of filtration process, liquid filtration is often carried out using the "one-stick, two-low, three-close" method. However, the "three-close" step requires the mouth of the beaker containing the liquid to be filtered to be pressed tightly against the glass rod, the glass rod to be lightly pressed against the three layers of filter paper, and the lower end of the funnel to be pressed tightly against the inside of the beaker. During this process, the operator needs to hold the mouth of the beaker containing the liquid to be filtered close to the glass rod. This action has a certain degree of instability, for example, it requires a certain level of muscle control in the operator's arm, and it is not advisable to have too much liquid to be filtered. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a filter for analytical chemistry to solve the technical problem that the operator needs to hold the beaker containing the liquid to be filtered close to the glass rod during the filtration process, which results in a certain degree of instability in the action.

[0005] To achieve the above objectives, this utility model provides an analytical chemistry filter for filtering liquid contained in a beaker, comprising a funnel and a guide rod disposed within the funnel.

[0006] The filter also includes a flow-guiding sleeve, which has a liquid outlet and a plug for sealing the liquid outlet. One end of the flow-guiding sleeve can be connected to the opening of the beaker. When the other end of the flow-guiding sleeve covers the inlet of the funnel, the flow-guiding rod will lift the plug and open the liquid outlet.

[0007] Preferably, a ring is formed at the liquid inlet of the funnel, an inner ring plate is formed on the inner wall of the ring, and an outer ring plate is formed on the outer wall of the ring.

[0008] Preferably, the filter further includes a clamp, which is sleeved and fixed on the ring body. A hinge frame is provided on the clamp. One end of the hinge frame is hinged to the outer wall of the clamp, and the other end of the hinge frame is provided with an insertion rod that passes through the drainage rod. The outer end of the insertion rod is provided with a fastening ring for fixing the drainage rod.

[0009] Preferably, the drainage sleeve includes a cylindrical body and a partition plate disposed inside the cylindrical body, the two ends of the cylindrical body are open, and the outer diameter of the cylindrical body is smaller than the inner diameter of the annular body.

[0010] Preferably, the partition plate is inclined, with its lowest point facing the funnel, and the liquid outlet is located at the lowest point of the partition plate.

[0011] Preferably, a plate is provided above the plug, the plate is located above the liquid outlet, and the plate is slidably connected to the inner wall of the cylinder. A spring is provided inside the cylinder to push the plug below the plate to block the liquid outlet.

[0012] Preferably, the inner wall of the top end of the cylinder is provided with an inner ring step and a rubber ring, and the rubber ring is located above the inner ring step.

[0013] The beneficial effects of this utility model are:

[0014] This invention involves inverting the assembled beaker and the flow guide sleeve onto the funnel, inserting the bottom end of the cylinder into the ring body, with the end wall of the bottom end of the cylinder in contact with the inner ring plate. As the cylinder is inverted, the top of the flow guide rod is aligned with the liquid outlet of the separator plate. After the cylinder is inverted, the top of the flow guide rod pushes against the plug body. After overcoming the spring preload, the plug body disengages from the liquid outlet. At this time, the liquid to be filtered in the beaker flows through the liquid outlet to the flow guide rod, and then through the flow guide rod to the filter paper for filtration. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the funnel and iron frame of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the drainage sleeve and beaker of this utility model;

[0018] Figure 3 This is a schematic diagram of the first working state of this utility model;

[0019] Figure 4 This is a schematic diagram of the second working state of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the funnel and guide rod of this utility model;

[0021] Figure 6 This is a schematic diagram of the internal structure of the drainage sleeve of this utility model.

[0022] The numbers on the map are:

[0023] 1-Function funnel; 11-Ring body; 12-Inner ring plate; 13-Outer ring plate; 2-Draining rod; 3-Draining sleeve; 31-Liquid outlet; 32-Plug body; 321-Plate; 322-Spring; 33-Cylinder body; 331-Inner ring step; 332-Rubber ring; 34-Divider plate; 4-Clamp; 41-Hinged frame; 42-Insertion rod; 5-Iron stand; 6-Beaker. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] This invention proposes a filter for analytical chemistry, such as... Figures 1 to 6 As shown, the filter for filtering liquid contained in beaker 6 includes a funnel 1 and a guide rod 2 disposed in the funnel 1.

[0027] The filter also includes a flow-guiding sleeve 3, which has a liquid outlet 31 and a plug 32 for sealing the liquid outlet 31. One end of the flow-guiding sleeve 3 can be connected to the opening of the beaker 6. When the other end of the flow-guiding sleeve 3 covers the liquid inlet of the funnel 1, the flow-guiding rod 2 will lift the plug 32 and open the liquid outlet 31.

[0028] A ring 11 is formed at the liquid inlet of the funnel 1, an inner ring plate 12 is formed on the inner wall of the ring 11, and an outer ring plate 13 is formed on the outer wall of the ring 11.

[0029] The filter also includes a clamp 4, which is sleeved and fixed on the ring body 11. A hinge frame 41 is provided on the clamp 4. One end of the hinge frame 41 is hinged to the outer wall of the clamp 4, and the other end of the hinge frame 41 is provided with an insertion rod 42. The insertion rod 42 passes through the drainage rod 2, and the outer end of the insertion rod 42 is provided with a fastening ring for fixing the drainage rod 2.

[0030] The drainage sleeve 3 includes a cylinder 33 and a partition plate 34 disposed inside the cylinder 33. The two ends of the cylinder 33 are open, and the outer diameter of the cylinder 33 is smaller than the inner diameter of the ring 11.

[0031] The partition plate 34 is tilted, with its lowest point facing the funnel 1, and the liquid outlet 31 is located at the lowest point of the partition plate 34.

[0032] A plate 321 is provided above the plug 32. The plate 321 is located above the liquid outlet 31 and is slidably connected to the inner wall of the cylinder 33. A spring 322 is provided inside the cylinder 33 to push the plug 32 below the plate to block the liquid outlet 31.

[0033] The inner wall of the top end of the cylinder 33 is provided with an inner ring step 331 and a rubber ring 332, and the rubber ring 332 is located above the inner ring step 331.

[0034] In this embodiment, the funnel 1 is first placed on the iron ring of the iron frame 5. Filter paper needs to be placed in the funnel 1 in advance. Then, the hinge frame 41, which is hinged on the clamp 4, is flipped so that the diversion plate is transferred into the funnel 1. The bottom end of the diversion plate is against the three layers of filter paper.

[0035] The flow sleeve 3 is placed on the beaker 6 containing the liquid to be filtered. The beaker 6 containing the liquid to be filtered is a spoutless beaker 6. Specifically, the inner ring step 331 of the cylinder 33 contacts the end wall of the opening of the beaker 6. The inner wall of the cylinder 33 and the outer wall of the beaker 6 are sealed by the rubber ring 332. At this time, the plug 32 closes the liquid outlet 31 opened on the partition plate 34.

[0036] Next, the assembled beaker 6 and the flow guide sleeve 3 are inverted onto the funnel 1. The bottom end of the cylinder 33 is inserted into the ring 11, and the end wall of the bottom end of the cylinder 33 is in contact with the inner ring plate 12. As the cylinder 33 is inverted, the top end of the flow guide 2 is aligned with the liquid outlet 31 of the partition plate 34. After the cylinder 33 is inverted, the top end of the flow guide 2 will push the plug 32. After overcoming the pre-tightening force of the spring 322, the plug 32 will disengage from the liquid outlet 31. At this time, the liquid to be filtered in the beaker 6 will flow through the liquid outlet 31 to the flow guide 2, and then flow through the flow guide 2 to the filter paper for filtration.

[0037] To prevent the liquid to be filtered from entering the funnel 1 from being higher than the upper edge of the filter paper, the gap between the inner diameter of the liquid outlet 31 and the diameter of the guide rod 2 can be controlled within a reasonable range. This will prevent the liquid flow from being too fast and not keeping up with the filtration speed, and will also prevent the liquid to be filtered from being higher than the upper edge of the filter paper.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0039] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An analytical chemistry filter for filtering liquid contained in a beaker, characterized in that, Includes a funnel and a guide rod placed inside the funnel; The filter also includes a flow-guiding sleeve, which has a liquid outlet and a plug for sealing the liquid outlet. One end of the flow-guiding sleeve can be connected to the opening of the beaker. When the other end of the flow-guiding sleeve covers the inlet of the funnel, the flow-guiding rod will lift the plug and open the liquid outlet.

2. The filter for analytical chemistry according to claim 1, characterized in that, A ring is formed at the inlet of the funnel, an inner ring plate is formed on the inner wall of the ring, and an outer ring plate is formed on the outer wall of the ring.

3. The filter for analytical chemistry according to claim 2, characterized in that, The filter also includes a clamp, which is fitted and fixed on the ring body. A hinge frame is provided on the clamp. One end of the hinge frame is hinged to the outer wall of the clamp, and the other end of the hinge frame is provided with an insertion rod that passes through the drainage rod. The outer end of the insertion rod is provided with a fastening ring for fixing the drainage rod.

4. A filter for analytical chemistry according to claim 2, characterized in that, The drainage sleeve includes a cylinder and a partition plate disposed inside the cylinder. The cylinder has openings at both ends, and the outer diameter of the cylinder is smaller than the inner diameter of the ring.

5. A filter for analytical chemistry according to claim 4, characterized in that, The partition plate is tilted, with its lowest point facing the funnel, and the liquid outlet is located at the lowest point of the partition plate.

6. A filter for analytical chemistry according to claim 5, characterized in that, A plate is provided above the plug, the plate is located above the liquid outlet, and the plate is slidably connected to the inner wall of the cylinder. A spring is provided inside the cylinder to push the plug below the plate to block the liquid outlet.

7. A filter for analytical chemistry according to claim 4, characterized in that, The inner wall of the top of the cylinder is provided with an inner ring step and a rubber ring, and the rubber ring is located above the inner ring step.

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