CN205216326U - Manual suction filter device is used in laboratory convenient to operation - Google Patents

Abstract

The utility model relates to an easy-to-operate manual suction filtration device for a laboratory, which is mainly composed of a funnel with a valve, a suction filtration bottle, a vacuum pressure gauge, a bottle stopper, an air suction interface and an air suction cylinder. In the utility model, the funnel tube of the funnel with a valve is sealed and connected to the suction filter bottle through a bottle stopper, and a cut-off valve is arranged on the upper part of the funnel tube; A liquid discharge valve is provided on the tube; one side of the upper end of the suction filter bottle is provided with a vacuum pressure gauge interface, and the other side is provided with a suction filter tube; the suction port and the suction filter tube are connected by threads; the suction cylinder It is connected with the suction port by thread. The laboratory suction filtration device involved in the utility model can solve the problem of solid-liquid separation without a vacuum pump, has a reasonable structure, is easy to operate, and is environmentally friendly, and is suitable for laboratories of various scientific research institutions.

Description

An easy-to-operate laboratory manual suction filter device

technical field

The utility model relates to a manual suction filter device for a laboratory, which belongs to the technical field of chemical experiment equipment.

Background technique

Suction filtration refers to the unit operation in which the pressure in the suction filter bottle is pumped into negative pressure by using an air extraction device, so as to realize solid-liquid separation. Suction filtration devices are used in many chemical experiments to obtain products. Currently commonly used suction filtration devices include Buchner funnels, filter papers, suction filtration bottles and air extraction devices, and the most commonly used air extraction devices are vacuum pumps. The vacuum pump has a good suction and filtration effect, and the airflow is large and stable, but its volume is relatively large and heavy. Commonly used vacuum pumps need to be connected to the power supply and require vacuum pump oil, which will cause certain pollution to the environment. If the vacuum pump is not operated properly, the filtrate will also be sucked back. For the non-toxic solid-liquid separation problem, the process of using a vacuum pump is cumbersome, and the suction and filtration work cannot be completed when the power is cut off or the vacuum pump fails.

Although there are also some manual suction filtration devices in the market, there are also some problems such as intermittent and discontinuous suction and filtration air flow or high equipment costs during use.

Contents of the invention

The purpose of the utility model is to provide a laboratory manual suction filter device which is convenient to use, simple to install and disassemble, and capable of continuous suction filtration, so as to overcome the deficiencies in the prior art.

The technical scheme of the utility model is: the device includes a funnel with a valve, a suction filter bottle, a vacuum pressure gauge, an air extraction interface, and an air extraction cylinder. . The bottom of the filter bottle is provided with a drain pipe with a valve, the upper side is provided with a filter port and the suction port is connected through a thread, the suction port is inlaid with a rubber film, and the other side is provided with a vacuum pressure gauge port and a vacuum pressure gauge. The tables are connected by threads. The air extraction interface is connected with the air extraction cylinder through threads. The air extractor consists of a cylinder, a piston, and a push-pull rod. The piston is composed of two upper and lower pistons. The upper piston has a strip-shaped hole. There is a cavity between the upper and lower pistons, and a rubber ring is embedded in the cavity.

Moreover, rubber gaskets are installed at each threaded interface to ensure airtightness.

Moreover, the funnel has a valve, and the valve is closed before the liquid-solid mixture is put in. When the filter bottle has a certain vacuum degree, the valve is opened to realize continuous suction filtration. The vacuum pressure gauge plays the role of indicating the vacuum degree in the filter bottle. .

Moreover, the diameters of the upper and lower pistons in the air pump are slightly smaller than the diameter of the air pump, and the rubber ring in the cavity can roll in the cavity.

Advantage and positive effect of the present utility model are:

Each part of the utility model can be disassembled, and the suction filter bottle can also be connected with a vacuum pump to realize electric suction filtration; the suction filter bottle is equipped with a vacuum pressure gauge, which is used to indicate the vacuum degree in the suction filter bottle; the funnel has a The valve realizes continuous suction filtration during manual suction filtration; for solving simple solid-liquid separation problems, it can achieve the purposes of easy operation, small space occupation, and no back suction of filtrate.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of the utility model example 1.

Figure 2 is a schematic structural view of Embodiment 2.

Figure 3 is a schematic structural view of Embodiment 3.

Labels in the figure:

1. Suction filter bottle 2, drain pipe 3, drain pipe valve 4, vacuum pressure gauge interface 5, vacuum pressure gauge 6, bottle stopper 7, funnel 8, funnel tube valve 9, suction filter port 10, air extraction port 11 , piston 12, air pump 13, push-pull rod 14, suction filter port interface 15, air pump interface 16, circular partition 17, small circular cylinder 18, connecting cylinder 19, large circular cylinder 20, rubber film 21, lower piston 22, strip hole 23, upper piston 24, cavity.

detailed description

example 1

As shown in Figure 1, the device includes a suction filter bottle 1, a valved funnel 7, a bottle stopper 6, a liquid discharge pipe 2, a vacuum pressure gauge interface 4, a suction filter port 9, an air extraction interface 10, an air extraction cylinder 12, and a piston 11 , the funnel tube of the funnel with valve 7 passes through the bottle stopper 6 and enters the suction filter bottle 1, the bottom of the suction filter bottle 1 is provided with a valve drain pipe 2, and the upper side is provided with a suction filter port 9 and an air suction port 10 through the screw thread Connection, the other side is provided with vacuum pressure gauge interface 4 and vacuum pressure gauge 5 are connected through threads, and the air extraction interface 10 is connected with the pumping cylinder 12 through threads, and the push-pull rod 13 is connected to the piston 11 and can reciprocate in the pumping cylinder 12.

Example 2

As shown in Figure 2, the inwall of the suction tube interface 15 on the upper end of the air extraction interface 10 and the suction filter port interface 14 at the lower end are provided with threads, and the diameter of the suction filter port interface 14 is less than the diameter of the suction tube interface 15; A ring partition 16 is provided, and the upper end of the ring partition 16 is a large circular cylinder 19, and the large circular cylinder 19 and the small circular cylinder 17 are connected by six connecting cylinders 18; The vinyl fluoride material is poured into a mould, and the rubber film 20 is embedded in the air suction interface.

Example 3

As shown in Figure 3, piston 11 is made up of upper piston 23 and lower piston 21, and upper piston 23 is provided with strip hole 22, and cavity 24 is arranged between upper and lower piston, and the rubber ring that can roll is provided in cavity. The diameter of piston up and down is slightly less than air pump 12 diameters. When the push-pull rod 13 pulls the piston 11 to move upward, the rubber ring rolls down, blocking the gap between the lower piston 21 and the air pump 12, and the lower end of the air pump 12 forms a negative pressure, and the rubber film 20 at the air suction interface 10 and the large circular cylinder 19 is separated, and the gas in the suction filter bottle 1 is extracted; when the push-pull rod 13 pulls the piston to move downward, the rubber ring rolls upward, blocking the gap between the upper piston 23 and the air extraction cylinder 12, and the extracted gas passes through the strip shape of the upper piston 23 Hole 22 is discharged into the atmosphere. At this time, a negative pressure has been formed in the suction filter bottle 1. Under the action of atmospheric pressure, the rubber film 20 blocks the large circular cylinder 19 to play a sealing role. The piston 11 reciprocates to realize continuous vacuuming .

Claims (2)

1. the manual Suction filtration device of use for laboratory, is characterized in that: described Suction filtration device comprises band valve funnel, bottle,suction, bottle stopper, pressure vacuum gauge, suction interface, pump bowl;

Described band valve funnel comprises the shutoff valve that funnel body, filter plate and filler tube top are arranged, and the filler tube of described funnel is connected and sealed by bottle stopper and bottle,suction;

Described bottle,suction comprises bottleneck, bottle tripe, bottleneck, suction filtration mouth, discharging tube, pressure vacuum gauge interface, and described suction filtration mouth is provided with screw thread; Described discharging tube is provided with draining valve; Described pressure vacuum gauge interface is provided with screw thread;

Described suction interface comprises pump bowl interface, suction filtration mouth interface, large circle cylinder, small circle ring cylinder, rubber film, is connected cylinder, the inwall of described pump bowl interface and suction filtration mouth interface is equipped with screw thread, and the diameter of described suction filtration mouth interface is less than the diameter of pump bowl interface; Be provided with annulus dividing plate in the middle part of described suction interface, described annulus dividing plate upper end is large circle cylinder, and described large circle cylinder is connected cylinder with small circle ring cylinder by the six roots of sensation and is connected, and described rubber film is embedded in suction interface;

Described pump bowl comprises cylindrical shell, piston, pull bar, described cylindrical shell lower end outer wall is provided with screw thread, described piston is made up of upper and lower two panels piston, described upper slice piston is provided with bar hole, the diameter of described upper and lower two panels piston is slightly less than pump bowl diameter, have space in the middle of described upper and lower two panels piston, described gap is embedded with rubber ring;

Described pressure vacuum gauge is connected with pressure vacuum gauge by screw thread.

2. manual Suction filtration device according to claim 1, is characterized in that: be describedly equipped with rubber sheet gasket with the total interface place be threaded, and is tightly connected; The structure of described suction interface can be shaping by die casting by polytetrafluoroethylmaterial material.