Suction filtration device for improving determination efficiency of water-soluble salt in soil

Abstract

The utility model discloses a suction filtration device for improving the determination efficiency of water-soluble salt in soil, which comprises a receiving bottle for receiving filtrate; the filter membrane filtering assembly is arranged above the receiving bottle, is in sealing fit with the receiving bottle, is used for being connected with an air extractor and carrying out filter membrane filtration, and comprises a sealing cover, an air extraction interface formed in the side part of the sealing cover and a filter membrane filtering part which is arranged on the sealing cover and is communicated with the air extraction interface; and the suspension receiving part is arranged above the filter membrane filtering assembly, is in sealing fit with the filter membrane filtering assembly, and is used for receiving the suspension and filtering the suspension by filter paper. The suction filtration device provided by the utility model can simplify the operation and improve the suction filtration efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of soil water-soluble salt determination, in particular to a suction filtration device for improving soil water-soluble salt determination efficiency. Background Art

[0002] When the water-soluble salt content in the soil is determined using the forest soil water-soluble salt analysis method (LY / T 1251-1999), after the sample is shaken for 3 minutes, different filtration methods (filter paper filtration, porcelain candle filtration, centrifugal analysis, etc.) need to be selected according to whether the soil suspension is easy to filter, so as to obtain a clear extract.

[0003] In the prior art, filter paper is generally used for filtration. The filtration device includes a receiving bottle and a funnel arranged on the receiving bottle. The filter paper is placed in the funnel. The leaching liquid needs to be filtered multiple times. The filtration device needs to be replaced frequently during processing, which is cumbersome and inefficient. Utility Model Content

[0004] In order to solve the above problems, the utility model aims to provide a suction filtration device for improving the efficiency of determining water-soluble salts in soil, which can improve the suction filtration efficiency.

[0005] Based on the above problems, the technical solution provided by the utility model is:

[0006] A suction filtration device for improving the efficiency of determining water-soluble salts in soil, comprising:

[0007] A receiving bottle, used for receiving the filtrate;

[0008] A membrane filtration assembly, which is arranged above the receiving bottle and sealably cooperates with the receiving bottle, is used to connect the air extraction device and perform membrane filtration, and includes a sealing cover, an air extraction interface arranged on the side of the sealing cover, and a membrane filtration part arranged on the sealing cover and connected to the air extraction interface;

[0009] The suspension receiving component is arranged above the membrane filtering component and is sealed with the membrane filtering component, and is used to receive the suspension and perform filter paper filtering.

[0010] In some of the embodiments, the filter membrane filtering portion is funnel-shaped and has a sand core inside for supporting the filter membrane, and the filter membrane filtering portion is sealed and matched with the receiving bottle.

[0011] In some of the embodiments, a first frosted surface is provided on the outer periphery of the upper portion of the receiving bottle, and a second frosted surface matching the first frosted surface is provided on the inner periphery of the sealing cover.

[0012] In some of the embodiments, a connecting pipe extending into the sealing cover is provided at the bottom of the membrane filtering part.

[0013] In some embodiments, the suspension receiving component includes a suspension receiving bucket and a porous supporting portion disposed in the suspension receiving bucket for supporting filter paper, and the lower end of the suspension receiving bucket is sealed with the upper end of the membrane filtering portion.

[0014] In some of the embodiments, a third frosted surface is disposed at the upper end of the filter membrane filtering portion, and a fourth frosted surface cooperating with the third frosted surface is disposed at the lower end of the suspension receiving bucket.

[0015] In some of the embodiments, the suspension receiving bucket and the membrane filtering part are clamped and fixed by a fixing clamp.

[0016] In some embodiments, an air extraction connection assembly is also included, and the air extraction connection assembly includes a bracket and a connecting pipe arranged on the bracket, and the connecting pipe connects the membrane filtration assembly with an air extraction device or another membrane filtration assembly in series.

[0017] In some of the embodiments, the connecting pipe includes an exhaust pipe, a first connecting pipe and a second connecting pipe connected via a tee, the exhaust pipe is connected to an exhaust device, the first connecting pipe is connected to the membrane filtration component, and the second connecting pipe is blocked or connected to another membrane filtration component.

[0018] In some embodiments, the receiving bottle is a conical flask.

[0019] Compared with the prior art, the advantages of the utility model are:

[0020] 1. The device can use filter paper and filter membrane for filtration at the same time, which improves the filtration efficiency. It does not need to frequently replace the filtration device, simplifies the operation and improves the filtration efficiency. It can also choose to use filter paper or filter membrane for filtration alone according to the needs, which improves the applicability of the filtration device.

[0021] 2. It can also be used in series with other filtration devices through the exhaust connection assembly to save laboratory space and reduce manpower investment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic structural diagram of an embodiment of a suction filtration device for improving the determination efficiency of water-soluble salts in soil according to the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the receiving bottle in the embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the membrane filtration assembly in the embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the suspension receiving component in the embodiment of the utility model;

[0027] in:

[0028] 1. Receiving bottle; 1-1. First frosted surface;

[0029] 2. Filter membrane filtration assembly; 2-1. Sealing cover; 2-1a. Second frosted surface; 2-1b. Air extraction interface; 2-2. Filter membrane filtration part; 2-2a. Third frosted surface; 2-3. Connecting pipe; 2-4. Sand core;

[0030] 3. Suspension receiving component; 3-1. Suspension receiving bucket; 3-1a. Fourth friction surface; 3-2. Porous support portion;

[0031] 4. Fixing clip;

[0032] 5. Exhaust connection assembly; 5-1. Bracket; 5-2. Exhaust pipe; 5-3. First connecting pipe; 5-4. Second connecting pipe; 5-5. Tee. DETAILED DESCRIPTION

[0033] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the utility model and are not limited to the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0034] like Figure 1 As shown, an embodiment of the utility model is provided, which provides a suction filtration device for improving the efficiency of determining water-soluble salts in soil, including a receiving bottle 1, a membrane filtration component 2 and a suspension receiving component 3.

[0035] The receiving bottle 1 is used to receive the filtrate and can be a conical bottle.

[0036] like Figure 3 As shown, a membrane filtration assembly 2 is arranged above the receiving bottle 1 and sealed with the receiving bottle 1, and is used to connect the vacuum device and perform membrane filtration, including a sealing cover 2-1, a vacuum interface 2-1b arranged on the side of the sealing cover 2-1, and a membrane filtration part 2-2 arranged on the sealing cover 2-1 and connected to the vacuum interface 2-1b.

[0037] Specifically, the membrane filtration part 2-2 is funnel-shaped and is provided with a sand core 2-4 for supporting the membrane. The membrane filtration part 2-2 is sealed with the receiving bottle 1, and the filtrate is received by the membrane filtration part 2-2 and membrane filtration is performed.

[0038] In order to facilitate the sealing cooperation between the membrane filtration assembly 2 and the receiving bottle 1, a first frosted surface 1-1 (such as Figure 2 As shown), a second frosted surface 2-1a matching the first frosted surface 1-1 is provided on the inner periphery of the lower part of the sealing cover 2-1. When in use, vaseline is applied between the first frosted surface 1-1 and the second frosted surface 2-1a to ensure the seal between the membrane filtration assembly 2 and the receiving bottle 1.

[0039] In order to further optimize the implementation effect of the utility model, a connecting pipe 2-3 extending into the sealing cover 2-1 is provided at the bottom of the membrane filtering part 2-2.

[0040] The suspension receiving component 3 is arranged above the membrane filtration component 2 and is sealed with the membrane filtration component 2 to receive the suspension and filter the suspension with filter paper. Figure 4 As shown, the suspension receiving component 3 includes a suspension receiving bucket 3-1 and a porous support portion 3-2 arranged in the suspension receiving bucket 3-1 for supporting filter paper. The lower end of the suspension receiving bucket 3-1 is sealed with the upper end of the membrane filtering portion 2-2.

[0041] In order to facilitate the connection and fixation between the suspension receiving component 3 and the membrane filtering assembly 2, the suspension receiving bucket 3-1 and the membrane filtering part 2-2 are clamped and fixed by the fixing clamp 4, which facilitates the installation and disassembly between the suspension receiving component 3 and the membrane filtering assembly 2.

[0042] In order to facilitate the sealing cooperation between the suspension receiving bucket 3-1 and the membrane filtering part 2-2, a third frosted surface 2-2a is provided at the upper end of the membrane filtering part 2-2, and a fourth frosted surface 3-1a cooperating with the third frosted surface 2-2a is provided at the lower end of the suspension receiving bucket 3-1. Vaseline is applied between the third frosted surface 2-2a and the fourth frosted surface 3-1a to ensure the sealing cooperation between the suspension receiving bucket 3-1 and the membrane filtering part 2-2.

[0043] In order to facilitate the connection between the filtration device and the air extraction device (such as a vacuum pump), an air extraction connection component 5 is also included, which includes a bracket 5-1 and a connecting pipe arranged on the bracket 5-1. The connecting pipe connects the membrane filtration component 2 and the air extraction device or another membrane filtration component 2 in series.

[0044] Specifically, the connecting pipeline includes an air extraction pipe 5-2, a first connecting pipe 5-3 and a second connecting pipe 5-4 connected via a tee 5-5, wherein the air extraction pipe 5-2 is connected to the air extraction device, the first connecting pipe 5-3 is connected to the membrane filtration assembly 2, and the second connecting pipe 5-4 is blocked or connected to another membrane filtration assembly 2. When the second connecting pipe 5-4 is blocked, the suction filtration device is used alone, and when the second connecting pipe 5-4 is connected to another membrane filtration assembly 2, two suction filtration devices can be used in series, which reduces the input of personnel and improves the filtration efficiency.

[0045] The working principle of the utility model is:

[0046] The vacuum interface 2-1b of the membrane filtration component 2 is connected to the first connecting pipe 5-3 of the vacuum connection component 5, the vacuum pipe 5-2 is connected to the vacuum device, the second connecting pipe 5-4 is blocked or connected to another membrane filtration component 2, and the suspension to be filtered is poured into the suspension receiving bucket 3-1. The vacuum device works, and the suspension is filtered through filter paper and filter membrane in turn and enters the receiving bottle 1. The device can filter the suspension with filter paper and filter membrane at one time, and the suspension can be filtered after a relatively small number of filtrations. There is no need to frequently replace the vacuum filtration device, which simplifies the operation and improves the filtration efficiency. According to the filtrate situation, filter paper or filter membrane can be used alone for filtration to improve the applicability of the vacuum filtration device.

[0047] In summary, the filtration device can simplify the operation and improve the filtration efficiency.

[0048] The above examples are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A suction filtration device for improving the efficiency of determining water-soluble salts in soil, characterized in that: include: A receiving bottle, used for receiving the filtrate; A membrane filtration assembly, which is arranged above the receiving bottle and sealably cooperates with the receiving bottle, is used to connect the air extraction device and perform membrane filtration, and includes a sealing cover, an air extraction interface arranged on the side of the sealing cover, and a membrane filtration part arranged on the sealing cover and connected to the air extraction interface; The suspension receiving component is arranged above the membrane filtering component and is sealed with the membrane filtering component, and is used to receive the suspension and perform filter paper filtering.

2. The filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 1, characterized in that: The filter membrane filtering part is funnel-shaped and is provided with a sand core for supporting the filter membrane inside. The filter membrane filtering part is sealed and matched with the receiving bottle.

3. The filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 2, characterized in that: The outer periphery of the upper part of the receiving bottle is provided with a first frosted surface, and the inner periphery of the sealing cover is provided with a second frosted surface matching with the first frosted surface.

4. The suction filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 2, characterized in that: A connecting pipe extending into the sealing cover is provided at the bottom of the filter membrane filtering part.

5. The filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 1, characterized in that: The suspension receiving component comprises a suspension receiving bucket and a porous supporting part arranged in the suspension receiving bucket for supporting filter paper, and the lower end of the suspension receiving bucket is sealed with the upper end of the filter membrane filtering part.

6. The suction filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 5, characterized in that: The upper end of the filter membrane filtering part is provided with a third frosted surface, and the lower end of the suspension receiving bucket is provided with a fourth frosted surface matching the third frosted surface.

7. The suction filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 5, characterized in that: The suspension receiving bucket and the membrane filtering part are clamped and fixed by a fixing clamp.

8. The suction filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 1, characterized in that: It also includes an air extraction connection component, which includes a bracket and a connecting pipe arranged on the bracket, and the connecting pipe connects the membrane filtration component with an air extraction device or another membrane filtration component in series.

9. The suction filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 8, characterized in that: The connecting pipeline includes an exhaust pipe, a first connecting pipe and a second connecting pipe connected via a tee, the exhaust pipe is connected to an exhaust device, the first connecting pipe is connected to the membrane filtration component, and the second connecting pipe is blocked or connected to another membrane filtration component.

10. The suction filtration device for improving the determination efficiency of water-soluble salts in soil according to claim 1, characterized in that: The receiving bottle is a conical bottle.

Images