Multi-hole-site double filtering device

Abstract

The utility model belongs to the technical field of soil solution sampling, and particularly relates to a multi-hole-site double filtering device which comprises a base, a stand column is connected to the top end of the base, and a liquid injection mechanism, a filtering assembly, a liquid collecting mechanism and a positioning assembly are sequentially arranged on the stand column from top to bottom. The filter assembly comprises a plurality of long funnels which are arranged at equal intervals; the liquid outlet end of the liquid injection mechanism corresponds to the long funnel; the liquid collecting mechanism comprises a second rotating disc rotationally connected to the stand column, a plurality of supporting frames are arranged on the second rotating disc in the circumferential direction, a supporting plate is arranged on the multiple supporting frames in a sliding mode, a plurality of receiving bottles are arranged on the supporting plate at equal intervals, short funnels are connected to the receiving bottles in a sealed and inserted mode, the short funnels correspond to the long funnels, and the short funnels and the long funnels are each provided with filter paper. And the receiving bottles are communicated with suction filtration pumps. The utility model improves the filtering efficiency and effect, and can be used for large-batch filtering operation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to soil solution sampling technical field especially relates to a porous site double filtration device. BACKGROUND

[0002] As an important component of soil fertility, organic matter, although only a small part of the total soil content, has a decisive role in the formation of soil structure and the improvement of quality. Organic matter is not only an indicator of soil erosion and degradation, but also an effective factor in improving soil water holding and permeability. Therefore, monitoring of soil organic matter information can not only understand the characteristics of dynamic changes in soil quality and provide a criterion for the rationality of tillage measures, but also provide basic data support for the implementation of precision agriculture.

[0003] Before the soil is treated, the soil sample needs to be processed, which involves dissolving and filtering the soil sample. Currently, filter paper is placed on the funnel, and the soil solution is poured into the funnel for filtering. The filtered liquid is collected in a collection bottle. The operation is relatively complex, and the collection bottle is often easily broken during the filtering process, resulting in low work efficiency, which is not suitable for filtering a large amount of soil solution.

[0004] Therefore, a porous site double filtration device is needed to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a porous site double filtration device to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides a porous site double filtration device, which comprises a base, the top end of the base is connected with a stand, an injection mechanism, a filter assembly, a liquid collecting mechanism and a positioning assembly are sequentially arranged on the stand from top to bottom; the filter assembly comprises a plurality of long funnels arranged at equal intervals; the liquid outlet end of the injection mechanism is correspondingly arranged with the long funnel; the liquid collecting mechanism comprises a rotating disc two rotatably connected to the stand, a plurality of supporting frames are arranged on the rotating disc two in a circumferential direction, a plurality of supporting frames are slidably provided with a supporting plate, a plurality of receiving bottles are arranged at equal intervals on the supporting plate, a short funnel is sealingly inserted into the receiving bottle, the short funnel is correspondingly arranged with the long funnel, and the short funnel and the long funnel are both provided with filter paper, and the receiving bottle is communicated with a suction filter pump.

[0007] Preferably, the injection mechanism comprises a horizontal rod one connected to the top end of the stand, a plurality of injection heads are connected to the horizontal rod one at equal intervals, a plurality of injection heads are communicated with the injection mechanism, and the injection head is correspondingly arranged with the long funnel.

[0008] Preferably, the filtering assembly comprises a rotating disc I rotatably connected to the stand, a plurality of horizontal rods II are connected to the rotating disc I in a circumferential direction, a plurality of fixing rings are connected to the horizontal rods II at equal intervals, the long funnel is fixed to the horizontal rods II through the fixing rings, and fixing bolts are arranged on the fixing rings.

[0009] Preferably, the supporting frame comprises a connecting block connected to the rotating disc II, a U-shaped guide rail is connected to the connecting block away from the stand, and the opening end of the U-shaped guide rail is arranged at the end away from the stand; and recesses matched with the U-shaped guide rail are formed in the two sides of the supporting plate.

[0010] Preferably, a handle is connected to the end of the supporting plate away from the stand, a plurality of positioning rings are connected to the top end of the supporting plate, and the positioning rings are arranged in correspondence with the long funnel.

[0011] Preferably, the positioning assembly comprises a bracket horizontally connected to the stand, the bracket is arranged below the connecting block, a bolt is slidably connected to the bracket, a spring and a baffle are sleeved on the bolt, the baffle is fixedly connected to the bolt, the two ends of the spring are fixedly connected to the baffle and the bracket respectively, and a pin hole matched with the bolt is formed in the bottom end of the connecting block.

[0012] Preferably, a limiting plate is connected to the rotating disc I, and fastening bolts are threadedly connected to the limiting plate.

[0013] Compared with the prior art, the filtering device has the following advantages and technical effects:

[0014] The porous double filtering device can inject soil water solution into the long funnel and perform preliminary filtration, the liquid filtered preliminarily flows into the short funnel, the efficiency of secondary filtration is improved under the action of the suction filter pump, and finally, the liquid is dropped into the receiving bottle; the empty receiving bottle can be placed on the supporting plate at one time, when a group of receiving bottles are filled with liquid, the empty receiving bottle supporting plate prepared in advance is manually rotated to be directly below the long funnel, the empty receiving bottle is connected to the pump for suction filtration, the receiving bottle filled with filtered liquid is taken out from the supporting frame, and other groups of empty receiving bottles are replaced, so that the receiving bottles are alternately used, and continuous filtration is realized.

[0015] The filtering efficiency is improved, and the filtering device can be used for large-batch filtration operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following embodiments are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 A structural schematic view of a porous dual filtration device according to the present application is shown in the figure.

[0018] Figure 2 A top view of a filter assembly according to the present application is shown in the figure.

[0019] Figure 3 A top view of a support frame according to the present application is shown in the figure.

[0020] Figure 4 A structural schematic view of a supporting plate according to the present application is shown in the figure.

[0021] Figure 5 A Figure 1 A local enlarged view of position A in the figure.

[0022] Wherein: 1, base; 2, stand; 3, horizontal rod one; 4, liquid injection head; 5, turntable one; 6, horizontal rod two; 7, fixing ring; 8, fixing bolt; 9, long hopper; 10, turntable two; 11, connecting block; 12, U-shaped guide rail; 13, supporting plate; 14, handle; 15, groove; 16, positioning ring; 17, support; 18, bolt; 19, baffle; 20, spring; 21, receiving bottle; 22, short hopper; 23, air suction pipe; 24, suction filter pump; 25, limiting plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail with reference to the drawings and specific embodiments.

[0025] The technical terms involved in the embodiments will be described as follows.

[0026] A suction filter is a device that filters and extracts liquid through a filter cartridge. Its working principle is to use the exhaust function of the pump and the filter cartridge to filter the liquid through the filter cartridge, and then extract the filtered liquid. Common suction filters include manual and electric types:

[0027] A manual suction filter filters liquid in the bottle by manually shaking the suction filter bottle, and then extracts the filtered liquid through the pressure difference.

[0028] An electric suction filter is driven by an electric motor to filter and extract the filtered liquid at the same time.

[0029] Laboratory applications: often used as accessories for laboratory precision instruments, such as filtering of chemical reagents, pharmaceutical preparations, biological products, particle analysis and pure water preparation, etc.

[0030] A funnel is a cylindrical object used to pour liquids and powdered substances into containers with narrow openings. The narrow tube at the top of the funnel can vary in length. Funnels are usually made of stainless steel or plastic, but paper funnels are sometimes used for substances that are difficult to clean thoroughly, such as engine oil. Some funnels have a controllable valve at the top that allows the user to control the flow of liquid. Funnels are commonly found in kitchens; in laboratories, funnels are sometimes used with filter paper to separate chemicals such as crystals.

[0031] Soil environmental monitoring refers to an important measure to understand the quality of the soil environment. It is a dynamic analysis and determination of the degree of soil pollution and its development trend for the purpose of preventing and controlling soil pollution hazards. It includes investigation of the current situation of soil environmental quality, investigation of regional soil environmental background values, investigation of soil pollution accidents, and dynamic observation of contaminated soil. Soil environmental monitoring generally includes preparation, site selection, sampling, sample preparation, analysis and testing, evaluation, and other steps. Quality control / quality assurance should be implemented throughout the process.

[0032] Most filter papers are made of cotton fibers and are made using different methods for different purposes. Since it is made of fiber, its surface has countless small holes that allow liquid particles to pass through, while larger solid particles cannot pass through. This property allows the separation of mixed liquid and solid substances.

[0033] Reference Figures 1 to 5As shown, the utility model provides a kind of porous site dual filtration device, including base 1, the top of base 1 is connected with stand 2, and stand 2 is sequentially provided with liquid injection mechanism, filter assembly, liquid collecting mechanism and positioning assembly from top to bottom;Filter assembly includes a plurality of long funnels 9 arranged at equal intervals;The liquid outlet of liquid injection mechanism is correspondingly arranged with long funnel 9;Liquid collecting mechanism includes rotary disc two 10 rotatably connected on stand 2, a plurality of support frames are arranged on rotary disc two 10 along the circumference, a plurality of supporting plates 13 are slidably arranged on a plurality of support frames, a plurality of receiving bottles 21 are arranged at equal intervals on supporting plate 13, short funnel 22 is sealingly inserted into receiving bottle 21, short funnel 22 is correspondingly arranged with long funnel 9, and short funnel 22 and long funnel 9 are both provided with filter paper, and receiving bottle 21 is communicated with suction filter pump 24.

[0034] In the embodiment, receiving bottle 21 is made of transparent glass bottle, which is convenient for observing the liquid level inside and convenient for cleaning;Long funnel 9 is made of glass funnel, and short funnel 22 is made of Buchner funnel.

[0035] The bottle opening of receiving bottle 21 is sealingly connected with short funnel 22 through rubber plug, to ensure the effect of suction filtration, and the bottle body of receiving bottle 21 is connected with branch pipe through air extraction interface, the number of each group of receiving bottle 21 is three, and receiving bottle 21 of other groups is connected with air extraction pipe 23 through branch pipe, air extraction pipe 23 is quickly connected with suction filter pump 24 through quick connector, to facilitate switching.

[0036] The liquid injection mechanism is arranged to inject soil aqueous solution into long funnel 9, and to perform preliminary filtration, the liquid after preliminary filtration flows into short funnel 22, and the efficiency of secondary filtration is improved under the action of suction filter pump 24, and finally drips into receiving bottle 21;The empty receiving bottle 21 is placed on supporting plate 13 at one time, when a group of receiving bottle 21 is full, the empty receiving bottle 21 is manually transferred to the position directly below long funnel 9 on supporting plate 13, and the empty receiving bottle 21 is connected with suction filter pump 24 for suction filtration, and then the receiving bottle 21 full of filtered liquid is taken out from the support frame, and the empty receiving bottle 21 of other groups is replaced, to realize continuous filtration.

[0037] The utility model improves the filtration efficiency, and can be used for large-scale filtration operation.

[0038] Further, the liquid injection mechanism includes crossbar one 3 connected to the top of stand 2, a plurality of liquid injection heads 4 are connected to crossbar one 3 at equal intervals, the plurality of liquid injection heads 4 are communicated with liquid injection machine, and the liquid injection head 4 is correspondingly arranged with long funnel 9.

[0039] The liquid injection machine includes water tank, stirring mechanism and water pump;The stirring mechanism is used for stirring the mixture of soil and water in the water tank, and the water pump is used for pumping the mixture of soil and water to the liquid injection head 4, wherein the stirring mechanism and the water pump are commercially available, and are prior art, and the working principle will not be repeated.

[0040] The soil solution is pumped by the injection machine to the injection head 4 and flows into the long funnel 9.

[0041] Further, the filter assembly comprises a rotating disc 5 rotatably connected to the stand 2, a plurality of horizontal rods 6 are connected to the rotating disc 5 in a circumferential direction, a plurality of fixing rings 7 are connected to the horizontal rods 6 at equal intervals, and the long funnel 9 is fixed to the horizontal rods 2 through the fixing rings 7, and the fixing rings 7 are provided with fixing bolts 8.

[0042] The long funnel 9 can be taken off from the fixing ring 7 for cleaning, and the long funnel 9 can be fixed to the fixing ring 7 by rotating the fixing bolt 8.

[0043] In the embodiment, two sets of filter assemblies are provided, one set is in use, and when the filter paper needs to be replaced, the other set of filter assemblies can be switched by rotating the rotating disc 1, work efficiency is improved, and non-stop operation can be realized; in order to prevent the rotating disc 1 from rotating during the filtering process, a limiting plate 25 is connected to the rotating disc 1, and a fastening bolt is threadedly connected to the limiting plate 25.

[0044] Further, the support frame comprises a connecting block 11 connected to the rotating disc 2, a U-shaped guide rail 12 is connected to the end of the connecting block 11 away from the stand 2, the opening end of the U-shaped guide rail 12 is arranged at the end away from the stand 2, and recesses 15 adapted to the U-shaped guide rail 12 are formed on both sides of the supporting plate 13.

[0045] The U-shaped guide rail 12 is aligned with the recesses 15, and the ends of the opening ends of the U-shaped guide rail 12 are inserted into the recesses 15, so that the supporting plate 13 slides, which facilitates replacement, and the supporting plate 13 can be taken off for transferring or placing the entire set of receiving bottles 21, thereby improving work efficiency.

[0046] Further, the end of the supporting plate 13 away from the stand 2 is connected with a handle 14, and a plurality of positioning rings 16 are connected to the top end of the supporting plate 13, and the positioning rings 16 are arranged correspondingly to the long funnel 9.

[0047] The positioning rings 16 facilitate the positioning of the receiving bottles 21, and the handle 14 facilitates hand holding.

[0048] Further, the positioning assembly comprises a support 17 horizontally connected to the stand 2, the support 17 is arranged below the connecting block 11, a latch 18 is slidably connected to the support 17, a spring 20 and a blocking piece 19 are sleeved on the latch 18, the blocking piece 19 is fixedly connected to the latch 18, the two ends of the spring 20 are fixedly connected to the blocking piece 19 and the support 17, and a pin hole adapted to the latch 18 is formed in the bottom end of the connecting block 11.

[0049] The plug 18 is moved out of the pin hole on the connecting block 11 by pulling down the plug 18 to drive the baffle 19 to compress the spring 20, at this time, the rotating disc two 10 can rotate, otherwise, the rotating disc two 10 is locked to prevent the rotating disc two 10 from rotating in the process of collecting filtrate, and the filtrate flows out of the receiving bottle 21.

[0050] The working principle of the multi-hole double filtration device is as follows: filter paper is placed on the long funnel 9 and the short funnel 22, a group of receiving bottles 21 is moved to be directly below the liquid injection head 4 and the long funnel 9, the plug 18 is inserted into the pin hole, the liquid injection machine and the filtration pump 24 are started, double filtration is carried out, when the receiving bottles 21 reach the set liquid level, the plug 18 is pulled down and the rotating disc two 10 is rotated to place another group of empty receiving bottles 21 directly below the liquid injection head 4 and the long funnel 9, and the quick connector is reconnected with the filtration pump 24, then the supporting plate 13 of the receiving bottle 21 containing filtrate is pulled out from the U-shaped guide rail 12 for transfer, and a new group of empty receiving bottles 21 is replaced.

[0051] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0052] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application.

Claims

1. A dual filtration device with multiple sites, comprising: The utility model provides a kind of liquid injection device, including base (1), the top end of base (1) is connected with stand (2), and the liquid injection mechanism, filter assembly, liquid collecting mechanism and positioning assembly are sequentially arranged from top to bottom on stand (2).The filter assembly includes a plurality of long funnels (9) arranged at equal intervals.The liquid outlet end of the liquid injection mechanism is arranged correspondingly with the long funnel (9).The liquid collecting mechanism includes a second rotating disc (10) rotatably connected to the stand (2).A plurality of support frames are arranged circumferentially on the second rotating disc (10).A plurality of supporting plates (13) are slidably arranged on the support frames.A plurality of receiving bottles (21) are arranged at equal intervals on the supporting plates (13).A short funnel (22) is sealingly inserted into each receiving bottle (21).The short funnel (22) is arranged correspondingly with the long funnel (9).Both the short funnel (22) and the long funnel (9) are provided with filter paper.Each receiving bottle (21) is connected with a suction pump (24).

2. The double filtration device of claim 1, wherein, The liquid injection mechanism includes a first crossbar (3) connected to the top end of the stand (2).A plurality of liquid injection heads (4) are connected to the first crossbar (3) at equal intervals.Each liquid injection head (4) is connected with the liquid injection mechanism and arranged correspondingly with the long funnel (9).

3. The dual filter device of claim 1, wherein, The filter assembly includes a first rotating disc (5) rotatably connected to the stand (2).A plurality of second crossbars (6) are connected to the first rotating disc (5) circumferentially.A plurality of fixing rings (7) are connected to the second crossbars (6) at equal intervals.Each long funnel (9) is fixed to the second crossbar (6) through the fixing ring (7).A fixing bolt (8) is arranged on the fixing ring (7).

4. The double filter device of claim 3, wherein, The support frame includes a connecting block (11) connected to the second rotating disc (10).A U-shaped guide rail (12) is connected to one end of the connecting block (11) away from the stand (2).The opening end of the U-shaped guide rail (12) is located at the end away from the stand (2).Grooves (15) are formed in both sides of the supporting plate (13) and adapted to the U-shaped guide rail (12).

5. The dual filter device of claim 1, wherein, One end of the supporting plate (13) away from the stand (2) is connected with a handle (14).A plurality of positioning rings (16) are connected to the top end of the supporting plate (13).Each positioning ring (16) is arranged correspondingly with the long funnel (9).

6. The double filter device of claim 4, wherein, The positioning assembly includes a bracket (17) horizontally connected to the stand (2).The bracket (17) is located below the connecting block (11).A latch (18) is slidably connected to the bracket (17).A spring (20) and a baffle (19) are sleeved on the latch (18).The baffle (19) is fixedly connected to the latch (18).Both ends of the spring (20) are fixedly connected to the baffle (19) and the bracket (17).A pin hole is formed in the bottom end of the connecting block (11) and adapted to the latch (18).

7. The double filter device of claim 3, wherein, A limiting plate (25) is connected to the first rotating disc (5).A fastening bolt is threadedly connected to the limiting plate (25).

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