CN220070882U - Novel constant temperature anti-sedimentation suction filter - Google Patents

The utility model discloses a novel constant-temperature anti-sedimentation suction filter, which comprises a material cup, wherein a heat-preserving cover plate is arranged at the top of the material cup; the bottom of the material cup is in butt joint with the top of the connector; a sieve plate for bearing filter paper is arranged at the contact position of the material cup and the connector; the lower part of the connector is connected with the suction filtration bottle; the suction bottle is provided with a vacuum pump interface connected with a vacuum pump. This novel constant temperature prevents subsiding formula suction filter can realize that traditional laboratory vacuum suction filter device is difficult to carry out constant temperature filtration or stirring filterable operation. The heating constant temperature can meet the requirements of filtering and washing various solid-liquid materials with temperature requirements, and can also increase the washing and filtering efficiency. Stirring can prevent solid particles with smaller particle sizes from settling to form a 'dead' filter cake, which is difficult to filter or wash.

Novel constant temperature anti-sedimentation suction filter

Technical Field

The utility model relates to a suction filter, in particular to a novel constant-temperature anti-sedimentation suction filter.

Background

Chemical experiments and analysis often have the need of separating and purifying solid phase matters from a solid-liquid system, wherein vacuum filtration is a common means. The common suction filtration device is a buchner funnel, the common material is ceramic or glass, filter paper is firstly filled on the bottom surface of the funnel, the funnel is inserted into the buchner flask and the interface is sealed, the side opening of the buchner flask is connected with a vacuum system, the solid-liquid mixture to be separated is poured into the funnel, liquid is pumped into the buchner flask under the action of negative pressure, a solid phase substance gradually forms a filter cake and is reserved in the funnel, or the filter cake is washed by adopting solvents such as distilled water, so that the purposes of solid-liquid separation and purification are realized.

The traditional suction filtration device can be suitable for most experimental application requirements, but is difficult to meet partial special occasions or has the problems of low filtration and washing efficiency, for example. 1. Along with the progress of filtration operation, solid phase matters with smaller particle size can quickly form a filter cake which is accumulated in a dead way due to sedimentation and fluid flow direction traction, the filtration and washing efficiency is greatly reduced due to the great reduction of the water permeability, even no filtrate is extracted, and the operation period is prolonged; 2. the traditional suction filtration device does not have self-heating and constant temperature functions, so that the traditional suction filtration device is not suitable for certain hot filtration processes, such as filtering and removing solid impurities in hot and nearly saturated ferrous sulfate solution, the temperature of the ferrous sulfate solution can be quickly reduced due to heat dissipation and vacuum pumping in the filtration process, and ferrous sulfate crystals are separated out to block filter cloth, so that the hot filtration can hardly be performed; 3. some substances have different crystal structures or the quantity of crystal water at different temperatures, ferrous sulfate is still taken as an example, ferrous sulfate monohydrate is saturated and precipitated in aqueous solution at higher temperature, ferrous sulfate tetrahydrate and ferrous sulfate heptahydrate are precipitated at low temperature, and if crystals of a certain crystal form of the substances are required to be filtered and purified, the conventional suction filtration device which cannot be kept at constant temperature is difficult to meet the requirements; 4. in general, the slurry with higher temperature is easier to filter than the slurry with lower temperature, and the filtering and washing efficiency is reduced along with the reduction of the temperature of the materials by using a traditional suction filtration device.

Disclosure of Invention

The utility model aims to overcome the technical defects, and designs a novel suction filter with heating constant temperature and stirring functions aiming at the operation that the common laboratory suction filtration device is difficult to meet and needs constant temperature filtration or stirring filtration.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the novel constant-temperature anti-sedimentation suction filter comprises a material cup, wherein a heat-preserving cover plate is arranged at the top of the material cup; the bottom of the material cup is in butt joint with the top of the connector; a sieve plate for bearing filter paper is arranged at the contact position of the material cup and the connector; the lower part of the connector is connected with the suction filtration bottle; the suction bottle is provided with a vacuum pump interface connected with a vacuum pump. And each joint surface is frosted, so that the tightness of the device is ensured.

Further, the heating insulation sleeve is arranged outside the material cup, and automatic temperature control is realized through the temperature control probe.

Further, a sample adding hole, a stirrer hole, a motor support and a temperature control probe are simultaneously arranged on the heat preservation cover plate, the speed regulating motor is fixed on the heat preservation cover plate through the motor support, and the stirrer connection extending into the material cup is connected with the speed regulating motor through the stirrer hole. The sample adding hole can realize continuous feeding, and the rotating speed and the height of the stirrer can be adjusted. The heat preservation cover plate is provided with a panel, and is connected with the heating heat preservation sleeve, the temperature control probe and the stirrer through a common connection relationship, so that the heat preservation cover plate is adjusted.

Further, the lower diameter of the cup is smaller than the upper diameter.

Further, the screen plate is a porous screen plate or a sand core filter plate and is used for bearing filter paper, and the filter paper material can be selected from different types according to the components of the material to be pumped and filtered

Further, the connector is funnel-shaped.

Further, the cup and the connector are fixed by a fastener.

Further, the material cup is detachably connected with the heat preservation cover plate.

The beneficial effects of the utility model are as follows:

this novel constant temperature prevents subsiding formula suction filter can realize that traditional laboratory vacuum suction filter device is difficult to carry out constant temperature filtration or stirring filterable operation. The heating constant temperature can meet the requirements of filtering and washing various solid-liquid materials with temperature requirements, and can also increase the washing and filtering efficiency. Stirring can prevent solid particles with smaller particle sizes from settling to form a 'dead' filter cake, which is difficult to filter or wash.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top view of the insulating cover plate;

the device comprises a material cup 1, a heat-preserving cover plate 2, a connector 4, a suction filter bottle 5, a sample adding hole 6, a stirrer hole 7, a motor bracket 8, a speed regulating motor 9, a temperature control probe 10, a stirrer 11, a heating heat-preserving sleeve 12, a sieve plate 13, filter paper 14, a fastener 15, a vacuum pump interface 16, a power wire socket 17, a panel 18, a temperature control probe data jack 19 and a heating sleeve control jack.

Detailed Description

The present utility model will be further described in detail with reference to the following examples in order to better understand the aspects of the present utility model and to make the above-mentioned objects, features and advantages of the present utility model more apparent to those skilled in the art.

Example 1:

the utility model provides a novel constant temperature anti-sedimentation formula suction filter, includes material cup 1, and the lower part diameter of material cup 1 is less than the upper portion diameter. The top of the material cup 1 is detachably connected with a heat preservation cover plate 2; the heat preservation cover plate is simultaneously provided with a sample adding hole 5, a stirrer hole 6, a motor bracket 7, a temperature control probe 9 and a power wire socket 166, a speed regulating motor 8 is fixed on the heat preservation cover plate 1 through the motor bracket, and a stirrer 10 extending into the material cup is connected with the speed regulating motor 8 through the stirrer hole 6. The heat preservation cover plate is provided with a panel 17, and a temperature control probe data jack 18 and a heating sleeve control jack 19 on the panel are respectively connected with the temperature control probe 9 and the heating heat preservation sleeve 11 through a common connection relationship to realize the adjustment of the temperature control probe data jack and the heating sleeve control jack. The heating insulation sleeve 11 is arranged outside the material cup, and automatic temperature control is realized through the temperature control probe.

The bottom of the material cup 1 is in butt joint with the top of the connector 3 and is fixed by a fastener 14; a porous sieve plate 12 for bearing filter paper 13 is arranged at the contact position of the material cup 1 and the connector 3;

the connector 3 is funnel-shaped, and the lower part of the connector 3 is connected with the suction filtration bottle 4; the suction flask 4 is provided with a vacuum pump interface 15 connected to a vacuum pump. And each joint surface is frosted, so that the tightness of the device is ensured.

The operation method of the device comprises the following steps: when in use, the filter paper is properly wetted and then placed on the porous sieve plate of the connector, then the material cup is jointed with the fixed part of the connector, the filter paper is fixed by the fastener, and then the lower part of the connector is inserted into the suction filtration bottle, and each contact surface can be coated with vaseline to enhance the sealing effect. And (3) covering a heat-insulating cover plate, inserting a temperature control probe, adjusting the height of the stirrer, and connecting the temperature control probe and a heating heat-insulating sleeve to the panel for automatic temperature control. Connecting the assembled device with a vacuum pump, adding solvents such as distilled water and ethanol for suction filtration and washing materials or washing into a material cup from a sample adding hole, setting the temperature and the rotating speed of a stirrer, opening a heating device, a constant temperature device and the stirrer to prevent the materials from settling to form a dead filter cake which is difficult to filter and wash, and finally opening the vacuum pump to perform suction filtration operation.