CN207950816U - A kind of Suction filtration device - Google Patents

Abstract

The utility model discloses a kind of Suction filtration devices, including filter bowl, the lower end of the filter bowl is connected with filter by the bigbore tubular junction communicated therewith, the lower part of the filter is connected with bottle,suction, it is provided with bleeding point on the bottle,suction, the filter connects the upper end of diversion pipe by the funnel structure being provided at its inner portion, and the lower end of the diversion pipe extends to the lower section in the bottle,suction and positioned at the bleeding point.The beneficial effects of the utility model：The contact area of filtrate and filter paper can be increased, accelerates to ooze under filtrate, reduces and blocks risk, and can avoid filtrate by suction filtration airflow influence, improves and filters efficiency and filtrate collection rate.

Description

a filter device

technical field

The utility model relates to the field of filtering devices, in particular to a suction filtering device.

Background technique

Suction filtration of water samples is a commonly used pretreatment method in water quality analysis. Since natural water samples contain a large amount of impurities such as particulate matter, algae, and suspended colloids, it is often necessary to filter water samples to remove impurities before analysis and determination. Suction filtration refers to the method of using an air pump to reduce the air pressure in the suction filter bottle to achieve the purpose of solid-liquid separation. The current commonly used suction filtration device has the following shortcomings: the opening of the connection between the filter cup and the filter head is small, During the process of filtering water samples through filter paper, large particles of impurities are likely to cause blockage under negative pressure conditions, which affects the efficiency of suction filtration. On the other hand, when the filtered liquid falls into the filter bottle, it is easily affected by the airflow generated by the suction pump, and adheres to the wall of the filter bottle or is sucked into the suction tube, resulting in the loss of the filtrate sample and affecting the experimental analysis. accuracy.

Aiming at the problems in the related technologies, no effective solution has been proposed yet.

Utility model content

Aiming at the above-mentioned technical problems in the related art, the utility model proposes a suction filter device, which is not easy to be blocked and can prevent the filtered liquid from being affected by the air flow generated by the suction pump.

For realizing above-mentioned technical purpose, technical scheme of the present utility model is realized like this:

A suction filtration device, comprising a filter cup, the lower end of the filter cup is connected to a filter head through a large-caliber tubular connection connected with it, the lower part of the filter head is connected to a suction filter bottle, and the suction filter bottle is provided with There is an air suction port, the filter head is connected to the upper end of the draft tube through the funnel structure arranged inside it, and the lower end of the draft tube extends into the suction filter bottle and is located below the suction port.

Further, the upper end of the filter cup is open, and a funnel-shaped partition is provided between the opening and the tubular connection part, and several water-permeable holes are opened on the partition.

Further, the filter cup, filter head, suction filter bottle, partition and draft tube are all made of glass.

Further, the upper end of the filter head is in contact with the lower end of the tubular connection part, and both the filter head and the tubular connection part are fixed by metal clips.

Further, the filter head and the tubular connection part are provided with grinding ports that cooperate with each other at the position where the two are in contact.

Further, the lower part of the filter head is plugged and connected to the upper part of the filter bottle.

Further, the filter head and the suction filter bottle are provided with grinding mouths matched with each other at the position where they are in contact with each other.

Further, the partition is provided with filter paper capable of covering the permeable holes.

Further, the air suction port is connected with an air suction pump through a pipeline.

Further, a sand core is arranged inside the filter head, and the funnel structure is located below the sand core.

The utility model has beneficial effects: the contact area between the filtrate and the filter paper can be increased, the filtrate can be accelerated to infiltrate, the risk of clogging can be reduced, the filtrate can be prevented from being affected by the suction flow, and the suction filtration efficiency and filtrate collection rate can be improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural view of a suction filtration device according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of a suction filtration device according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the suction filtration device in use according to an embodiment of the present invention.

In the picture:

1. Filter cup; 2. Filter head; 3. Suction filter bottle; 4. Metal clip; 5. Partition;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in Figures 1-3, a suction filtration device according to an embodiment of the present invention includes a filter cup 1, and the lower end of the filter cup 1 is connected with a filter head 2 through a large-caliber tubular connection part communicating with it. , the bottom of the filter head 2 is connected with a suction filter bottle 3, and the suction filter bottle 3 is provided with a suction port 8, and the filter head 2 is connected to the upper end of the draft tube 7 through a funnel structure arranged inside it, so The lower end of the draft tube 7 extends into the suction filter bottle 3 and is located below the suction port 8 .

In a specific embodiment of the present utility model, the upper end of the filter cup 1 is open, and a funnel-shaped partition 5 is provided between the opening and the tubular connection part, and several water-permeable partitions are provided on the partition 5. Hole 6.

In a specific embodiment of the present utility model, the filter cup 1 , the filter head 2 , the filter bottle 3 , the partition 5 , and the guide tube 7 are all made of glass.

In a specific embodiment of the present utility model, the upper end of the filter head 2 is in contact with the lower end of the tubular connection part, and the filter head 2 and the tubular connection part are fixed by metal clips 4 .

In a specific embodiment of the present utility model, the filter head 2 and the tubular connection part are provided with grinding ports matched with each other at the position where the two are in contact.

In a specific embodiment of the present utility model, the lower part of the filter head 2 is connected with the upper part of the filter bottle 3 by plugging.

In a specific embodiment of the present invention, the filter head 2 and the suction filter bottle 3 are provided with grinding mouths matched with each other at the position where they are in contact.

In a specific embodiment of the present utility model, the partition 5 is provided with a filter paper 9 capable of covering the permeable hole 6 .

In a specific embodiment of the present utility model, the air suction port 8 is connected with an air suction pump through a pipeline.

In a specific embodiment of the present invention, the filter head 2 is provided with a sand core, and the funnel structure is located below the sand core.

In order to facilitate the understanding of the above-mentioned technical solution of the present utility model, the above-mentioned technical solution of the present utility model will be described in detail below through specific usage modes.

The suction filter device described in the utility model can be divided into three parts: a filter cup 1 with a funnel-shaped partition 5 , a filter cup 1 with a draft tube 7 and a suction filter bottle 3 with a suction port 8 . The filter cup 1, the suction filter bottle 3, the partition 5, and the guide tube 7 are all made of glass, and the filter head 2 is a filter head with a glass sand core.

A circular filter paper can be placed on the funnel-shaped partition 5, and some permeable holes 6 are arranged on the partition 5 to facilitate the seepage of the filtrate. The end face interface between the filter cup 1 and the filter head 2 is made of a grinding process, and the interface can be fixed with a metal clip 4 to prevent the filter cup 1 and the filter head 2 from shifting or slipping during the suction filtration process. The filter head 2 and the filter cup 1 are connected by a ground joint, which can avoid air leakage during the suction filtration process. The top of the suction filter bottle 3 has an air extraction port 8, which can be connected to an air extraction pump and used.

The lower end of the filter cup 1 is provided with a large-diameter tubular connection part, which can make the diameter of the filter cup 1 larger, so that the filtration area of the partition 5 becomes larger, and the contact area between the filtrate and the filter paper 9 is also increased, which accelerates the filtration of the filtrate. Infiltration reduces the risk of clogging.

During specific use, first connect and fix the filter cup 1, filter head 2 and suction filter bottle 3 in sequence, connect the air suction port 8 with the suction pump through a hose, and check the airtightness of the suction filter device. Subsequently, the circular filter paper 9 is placed on the partition 5 after being folded, and the filter paper 9 is washed with a small amount of water to make it close to the partition 5 . Then turn on the air pump, and slowly pour the water sample to be filtered into the filter cup 1, under the negative pressure formed by the air pump, the filtrate enters the filter bottle 3 after filtering through the filter paper 9 and the sand core in the filter head 2 in the collection. After the filtration is finished, the air pump is turned off, the filter cup 1 and the filter head 2 are removed in turn, and the water sample in the filter bottle 3 can be transferred to other containers. The used filter paper 9 can be gently removed for analysis and determination of particulate impurities. Clean the filter cup 1, filter head 2 and filter bottle 3 for next use.

To sum up, with the help of the above-mentioned technical solution of the utility model, the contact area between the filtrate and the filter paper can be increased, the seepage of the filtrate can be accelerated, the risk of clogging can be reduced, and the filtrate can be prevented from being affected by the suction filtration airflow, so as to improve the suction filtration efficiency and the filtration efficiency of the filtrate. collection rate.

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model shall be included in the utility model. within the scope of the new protection.

Claims (10)

1. A suction filtration device, comprising a filter cup (1), characterized in that the lower end of the filter cup (1) is connected to a filter head (2) through a large-diameter tubular connection connected thereto, and the filter head The lower part of (2) is connected with a suction filter bottle (3), and the suction filter bottle (3) is provided with a suction port (8), and the filter head (2) is connected to a flow guide tube through a funnel structure arranged inside it (7), and the lower end of the draft tube (7) extends into the suction filter bottle (3) and is located below the air suction port (8). 2. The suction filtration device according to claim 1, characterized in that the upper end of the filter cup (1) is open, and a funnel-shaped partition (5) is provided between the opening and the tubular connection part , the partition (5) is provided with a number of permeable holes (6). 3. The suction filtration device according to claim 2, characterized in that, the filter cup (1), filter head (2), suction filter bottle (3), partition (5), and guide tube (7) are all Made of glass. 4. The suction filtration device according to claim 3, characterized in that, the upper end of the filter head (2) is in contact with the lower end of the tubular connection part, and the filter head (2) is connected to the tubular connection All parts are fixed by metal clips (4). 5 . The suction filtration device according to claim 4 , characterized in that, the filter head ( 2 ) and the tubular connection part are provided with grinding ports that cooperate with each other at the position where the two are in contact. 5 . 6. The suction filtration device according to claim 3, characterized in that, the lower part of the filter head (2) is connected to the upper part of the suction filtration bottle (3) by plugging. 7 . The suction filtration device according to claim 6 , characterized in that, the filter head ( 2 ) and the suction filtration bottle ( 3 ) are provided with grinding mouths matched with each other at the positions where they are in contact. 8 . 8. The suction filtration device according to claim 2, characterized in that, the partition (5) is provided with a filter paper (9) capable of covering the permeable hole (6). 9. The suction filtration device according to claim 2, characterized in that, the air suction port (8) is connected with a suction pump through a pipeline. 10. The suction filtration device according to claim 1, characterized in that, a sand core is arranged inside the filter head (2), and the funnel structure is located below the sand core.