CN206642432U - Filter bottle - Google Patents

Abstract

The utility model discloses a suction filter bottle device, which comprises a funnel, a filter bottle, a filter cover and a filter membrane, the filter cover is twisted on the bottle mouth of the filter bottle, the neck of the funnel is twisted on the filter cover, and the filter membrane Placed on the upper surface of the filter cap and located in the neck of the funnel, the liquid to be filtered can pass through the filter membrane and the filter hole from the funnel and enter the inside of the filter bottle; It is easy to leak air between the funnel and the filter bottle, and the filter membrane is inconvenient to collect.

Description

Suction bottle device

technical field

The utility model relates to a chemical instrument, in particular to a suction filter bottle device.

Background technique

The suction filter bottle device is a commonly used filter instrument in chemical laboratories. It is mainly composed of a funnel, a suction filter bottle and a clip. There is a filter membrane between the ports, and the funnel and the filter bottle are fixed with clips. When in use, the connection port is connected to the suction pump. After the filtrate is poured into the funnel, the suction pump is turned on, and the filtrate enters the filter under negative pressure. Suction filter flask, while the filtered material is collected on the filter membrane. The funnel and the filtration bottle in the ordinary suction filtration bottle device are fixed by clips, which is easy to leak air during the suction filtration process; and the filter membrane is generally placed on the mouth of the suction filtration bottle, when the filter membrane needs to be removed For weight measurement or other operations, it is necessary to use tweezers to remove it into a container such as a beaker, and then perform the lower operation. The filter membrane is easy to fall off during the transfer process, which affects the experimental process.

Utility model content

The purpose of the utility model is to provide a suction filter bottle device, which solves the problems of easy air leakage between the funnel and the suction filter bottle and inconvenient collection of filter membranes in the common suction filter bottle device.

In order to achieve the above object, the utility model provides a suction filter bottle device, the suction filter bottle device includes a funnel, a filter bottle, a filter cap and a filter membrane, the upper part of the filter bottle is connected with a suction pipe, the filter bottle The outer surface of the bottle mouth is provided with a first external thread structure, the inner surface of the filter cap is provided with a first internal thread structure matched with the first external thread structure, and the filter cap is twisted on the filter bottle On the bottle mouth; the upper surface of the filter cover is provided with a plurality of through filter holes, the filter membrane is placed on the upper surface of the filter cover to be able to cover the filter holes, the outer surface of the filter cover is provided with The second external thread structure, the inner surface of the neck of the funnel is provided with a second internal thread structure matched with the second external thread structure, the neck of the funnel is twisted on the filter cap, The filter membrane is located inside the neck of the funnel; the liquid to be filtered can pass through the filter membrane and the filter hole from the funnel to enter the inside of the filter bottle.

Preferably, the outer surface of the filter cover is also fitted with a retaining ring, and the inner surface of the retaining ring is provided with a third internal thread structure matched with the second external thread structure, so that the retaining ring can be twisted Closed on the outer surface of the filter cover, twisting the retaining ring can make the retaining ring move in the vertical direction.

Preferably, the outer surface of the retaining ring is recessed inward along the radial direction of the retaining ring to form an annular groove.

Preferably, an annular baffle is fixed on the inner surface of the neck of the funnel, and the funnel is twisted so that the annular baffle can press the filter membrane against the upper surface of the filter cap.

Preferably, the upper surface of the filter cover is recessed downward to form a circular groove, the bottom surface of the groove is provided with a plurality of filter holes penetrating through, and the filter membrane is located inside the circular groove.

Preferably, the inner bottom surface of the filter bottle protrudes upwards to form an arc-shaped convex structure, and the lower side of the filter bottle is also communicated with a water discharge pipe.

According to the above technical solution, the utility model provides a suction filter bottle device, which includes a funnel, a filter bottle, a filter cap and a filter membrane, the filter cap is twisted on the bottle mouth of the filter bottle, and the neck of the funnel is twisted on the filter On the cover, the filter membrane is placed on the upper surface of the filter cover and is located in the neck of the funnel, and the filtrate to be filtered can pass through the filter membrane and the filter hole from the funnel to enter the inside of the filter bottle. The thread structure and the filter cover are twisted together, which greatly increases the airtightness between them, and when the filter membrane needs to be weighed or other operations are required, the filter membrane does not need to be removed separately, and the entire filter membrane can be removed. The filter cover and the filter membrane are removed together, and then placed in an oven for drying or other operations. During the transfer process of the filter membrane, the filter membrane is not easy to be damaged or dropped, and the detachable filter cover is also convenient for cleaning.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the accompanying drawings: Fig. 1 is a structural schematic diagram of the suction filter bottle device provided by the utility model; Fig. 2 is a cross-sectional view of the suction filter bottle device provided by the utility model; Fig. 3 is a filter bottle device provided by the utility model Schematic diagram of the structure of the bottle; Fig. 4 is a schematic diagram of the structure of the filter cap in the suction filter bottle device provided by the utility model.

1- funnel, 2- filter bottle, 3- filter cap, 4- filter membrane, 5- retaining ring, 6- sealing film, 101- ring baffle, 201- suction pipe, 202- water discharge pipe, 203- arc convex From the structure, 301-filter hole.

detailed description

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

In the present utility model, in the case of no contrary description, the orientation words included in the term such as "upper surface, outer surface, inner surface" only represent the orientation of the term in the normal use state, or are technical A common term as understood by persons and should not be construed as a limitation of the term.

As shown in Figure 1-4: the utility model provides a kind of suction filter bottle device, and described suction filter bottle device comprises funnel 1, filter bottle 2, filter cap 3 and filter membrane 4, and the upper part of described filter bottle 2 communicates with There is an air extraction pipe 201, the outer surface of the bottle mouth of the filter bottle 2 is provided with a first external thread structure, and the inner surface of the filter cap 3 is provided with a first internal thread structure matched with the first external thread structure, so The filter cap 3 is twisted on the bottle mouth of the filter bottle 2; the upper surface of the filter cap 3 is provided with a plurality of through filter holes 301, and the filter membrane 4 is placed on the upper surface of the filter cap 3 to The filter hole 301 can be covered, the outer surface of the filter cover 3 is provided with a second external thread structure, and the inner surface of the neck of the funnel 1 is provided with a second external thread structure matched with the second external thread structure. Two internal thread structures, the neck of the funnel 1 is twisted on the filter cover 3, so that the filter membrane 4 is located inside the neck of the funnel 1; the liquid to be filtered can pass through the funnel 1 in sequence The filter membrane 4 and the filter holes 301 enter the inside of the filter bottle 2 .

The funnel 1, the filter bottle 2 and the filter cap 3 are all twisted through the thread structure, which greatly increases the airtightness between them, and when it is necessary to measure the weight of the filter membrane 4 or perform other operations, it is not necessary to separate the When the filter membrane 4 is removed, the entire filter cover 3 and the filter membrane 4 can be removed together, and then put into an oven to dry or perform other operations. During the transfer process of the filter membrane 4, the filter membrane is not easy to be damaged or dropped, and the filter cover 3 It is also detachable for easy cleaning.

In a preferred embodiment of the present utility model, in order to prevent the filter membrane 4 from being polluted during the transfer process, the outer surface of the filter cover 3 is also fitted with a retaining ring 5, and the inner surface of the retaining ring 5 is set There is a third internal thread structure matched with the second external thread structure, so that the retaining ring 5 can be twisted on the outer surface of the filter cover 3, and twisting the retaining ring 5 can make the retaining ring 5 Move along the vertical direction; during use, the retaining ring 5 is twisted upwards so that the upper end of the retaining ring 5 is higher than the upper surface of the filter cap 3, and the sealing film 6 is sealed on the upper end of the retaining ring 5, in order to further fix the sealing film 6, The outer surface of the retaining ring 5 is recessed inward along the radial direction of the retaining ring 5 to form an annular groove, and a rubber band can be used to press the edge of the sealing film into the annular groove to prevent the sealing film 6 from falling off.

In a preferred embodiment of the present utility model, in order to effectively fix the filter membrane 4 and prevent it from deflecting during the filtration process, the inner surface of the neck of the funnel 1 is also fixed with an annular baffle 101, The funnel 1 is twisted so that the ring baffle 101 can press the filter membrane 4 against the upper surface of the filter cap 3 .

In another preferred embodiment of the present utility model, the upper surface of the filter cover 3 is recessed downward to form a circular groove, and the bottom surface of the groove is provided with a plurality of filter holes 301 penetrating through, The filter membrane 4 is located inside the circular groove; it can also effectively prevent the filter membrane 4 from being deflected during the filtration process.

In a preferred embodiment of the present utility model, the inner bottom surface of the filter bottle 2 protrudes upwards to form an arc-shaped convex structure 203, and the lower side of the filter bottle 2 is also connected with a drain pipe 202, which is arc-shaped The raised structure 203 facilitates the discharge of filtrate from the waterproof pipe 202 .

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be explained separately.

In addition, any combination of various implementations of the present invention can also be made, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

Claims (6)

1. one kind filters bottle, it is characterised in that the suction filtration bottle includes funnel（1）, filter flask（2）, filter cover（3）And filter Film（4）, the filter flask（2）Top be communicated with exhaust tube（201）, the filter flask（2）Bottleneck lateral surface be provided with outside first Helicitic texture, the filter cover（3）Medial surface be provided with the first female thread structure being engaged with first external thread structure, The filter cover（3）Twist is in the filter flask（2）Bottleneck on；The filter cover（3）Upper surface be provided with multiple filter openings run through （301）, the filter membrane（4）It is placed on the filter cover（3）Upper surface with can be by the filter opening（301）Masking, the filter cover （3）Lateral surface be provided with the second external thread structure, the funnel（1）Eck at medial surface be provided with outside described second The second female thread structure that helicitic texture is engaged, the funnel（1）Eck twist in the filter cover（3）On so that it is described Filter membrane（4）Positioned at the funnel（1）Eck inside；Liquid to be filtered can be from the funnel（1）Inside pass through the filter membrane successively （4）With the filter opening（301）Into the filter flask（2）It is internal.

2. suction filtration bottle according to claim 1, it is characterised in that the filter cover（3）Lateral surface be also sheathed with gear Circle（5）, the back-up ring（5）Medial surface be provided with the 3rd female thread structure being engaged with second external thread structure, make Obtain the back-up ring（5）Can twist in the filter cover（3）Lateral surface, reverse the back-up ring（5）Enable to the back-up ring（5） Vertically move.

3. suction filtration bottle according to claim 2, it is characterised in that the back-up ring（5）Lateral surface along the back-up ring （5）Radial direction cave inward formed with annular groove.

4. suction filtration bottle according to claim 1, it is characterised in that the funnel（1）Eck at medial surface it is also solid Surely there is annular catch（101）, reverse the funnel（1）So that the annular catch（101）Can be by the filter membrane（4）Compress In the filter cover（3）Upper surface.

5. suction filtration bottle according to claim 1, it is characterised in that the filter cover（3）Upper table concave shape downwards Into there is circular groove, the bottom surface of the groove is provided with multiple filter openings run through（301）, the filter membrane（4）Positioned at described Inside circular groove.

6. the suction filtration bottle according to any one in claim 1-5, it is characterised in that the filter flask（2）Inside Bottom surface raises up formed with arc convex structure（203）, the filter flask（2）Lower side be also communicated with adjutage（202）.