Suction filtration device for detecting suspended solids in sampled water

Abstract

The suction filtration device is characterized in that a sand core filter head comprises a sleeving part and a filter part, an air outlet pipeline is mounted on the sleeving part, the sand core filter head is hermetically sleeved on a bottle opening of a triangular accommodating bottle through the sleeving part, a filter pipe communicated with the filter part is arranged in the sleeving part, and the filter pipe is communicated with the filter part. The filter tube is inserted into a bottle opening of the triangular containing bottle, a gap exists between the filter tube and the bottle opening of the triangular containing bottle, a ventilation nozzle communicated with the interior of the triangular containing bottle is arranged on the filter part, filter membrane containing seats are stacked in the filter part, the inner walls of the filter membrane containing seats are of closed structures, circulation holes are formed in the bottoms of the filter membrane containing seats, and filter membranes are placed at the bottoms of the filter membrane containing seats. The sand core filter cup is stacked on the filter membrane accommodating seat, two ends of the sand core filter cup are communicated, and the sand core filter head, the filter membrane accommodating seat and the sand core filter cup are fixedly sealed through a fixing device; according to the device, the filter membrane accommodating seat can be directly and integrally dried and cooled without taking out the filter membrane, so that the filter membrane is effectively protected, and the result accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of suspended solids detection technology in water sampling, and in particular to a filtration device for detecting suspended solids in water sampling. Background Technology

[0002] Vacuum filtration, also known as vacuum filtration, is an operation that uses a vacuum pump to reduce the pressure in a filtration flask to achieve solid-liquid separation. Vacuum filtration is used when testing suspended solids in sampled water. Its specific structure and operation process are as follows: Current vacuum filtration devices include a triangular receiving flask, a sand filter head, and a sand filter cup. These three components are connected to form a complete vacuum filtration system. The triangular receiving flask is used to collect the filtered sampled water, while the sand filter cup facilitates the pouring of the sampled water. A filter membrane is installed between the sand filter head and the sand filter cup to filter suspended solids. The sand filter head and sand filter cup are clamped together, and an air extraction port is located on the sand filter head for connection to a vacuum pump.

[0003] In use, the sampled water is poured into the sand core filter cup, and the suction is started. After the suspended solids in the sampled water are filtered by the filter membrane, the sampled water flows into the triangular collection bottle for collection. However, this structure has the following disadvantages: After the filtration is completed, the filter membrane needs to be clamped out, placed in a weighing dish, and then placed in a drying oven to dry. Then, the filter membrane is taken out and moved to a balance for weighing to compare the weight of the filter membrane before and after filtration, and finally the weight of the suspended solids is obtained. Currently, the filter membrane is manually clamped out from between the sand core filter head and the sand core filter cup using tweezers. During the clamping process, the tweezers will directly contact the filter membrane. Since the filter membrane is relatively thin, the clamping will cause the filter membrane to wrinkle, causing the suspended solids on the filter membrane to fall off, resulting in inaccurate final weighing results. In addition, because the filter membrane is relatively thin, clamping is also difficult. Furthermore, during drying, the filter membrane needs to be placed on a weighing dish, and the weighing dish is placed in the oven to dry. The weighing dish may break. Utility Model Content

[0004] The technical problem to be solved by this utility model is: a filtration device for detecting suspended solids in water sampling. This device can dry and cool the filter membrane holder as a whole without removing the filter membrane, effectively protecting the filter membrane and making the test results more accurate.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a filtration device for detecting suspended solids in water sampling, comprising a triangular receiving bottle, a sand core filter head, and a sand core filter cup. The sand core filter head includes a fitting part and a filtering part. A vent is installed on the fitting part. The sand core filter head is sealed and fitted onto the mouth of the triangular receiving bottle through the fitting part. A filter tube communicating with the filtering part is provided inside the fitting part. The filter tube is inserted into the mouth of the triangular receiving bottle. There is a gap between the filter tube and the mouth of the triangular receiving bottle. The vent on the fitting part communicates with the inside of the triangular receiving bottle. A filter membrane receiving seat is stacked inside the filtering part. The inner wall of the filter membrane receiving seat is a closed structure. The bottom of the filter membrane receiving seat has a flow hole. A filter membrane is placed at the bottom of the filter membrane receiving seat. The sand core filter cup is stacked on the filter membrane receiving seat. The two ends of the sand core filter cup are connected. The sand core filter head, the filter membrane receiving seat, and the sand core filter cup are fixed and sealed by a fixing device.

[0006] As a preferred embodiment, the filter membrane holder includes an upper filter membrane holder and a lower filter membrane holder, which are threadedly connected and fixed. The filter membrane is placed on the lower filter membrane holder, and the upper filter membrane holder is provided with a pressure ring for pressing the filter membrane. The outer wall of the lower filter membrane holder is in contact with the inner wall of the filtration section.

[0007] As a preferred embodiment, the upper outer edge of the filter section is provided with a lower outer edge ring, the upper outer edge of the upper filter membrane holder is provided with a corresponding middle outer edge ring, the upper filter membrane holder is hung on the lower outer edge ring of the filter section through the middle outer edge ring, the lower outer edge of the sand core filter cup is provided with an upper outer edge ring, the upper outer edge ring is stacked on the middle outer edge ring, the fixing device is a filter clamp, and the lower outer edge ring, middle outer edge ring and upper outer edge ring are fixed and sealed by the filter clamp.

[0008] As a preferred embodiment, the vent is connected to an air pump via a connecting pipe, and a filter structure is provided at the outlet of the vent.

[0009] As a preferred embodiment, the mouth and the sleeve of the triangular container bottle are both provided with mating rubber sleeves.

[0010] After adopting the above technical solution, the effect of this utility model is as follows: The filtration device for detecting suspended solids in sampled water includes a triangular receiving bottle, a sand core filter head, and a sand core filter cup. The sand core filter head includes a fitting part and a filtering part. A vent is installed on the fitting part. The sand core filter head is sealed and fitted onto the mouth of the triangular receiving bottle through the fitting part. A filter tube communicating with the filtering part is provided inside the fitting part. The filter tube is inserted into the mouth of the triangular receiving bottle, and there is a gap between the filter tube and the mouth of the triangular receiving bottle. The vent on the fitting part communicates with the inside of the triangular receiving bottle. A filter membrane holder is stacked inside the filtering part. The inner wall of the filter membrane holder is a closed structure. A flow hole is located at the bottom of the filter membrane holder. The filter membrane is placed in the filter housing, and the sand core filter cups are stacked on the filter membrane holder. The two ends of the sand core filter cups are connected. The sand core filter head, filter membrane holder, and sand core filter cups are fixed and sealed by a fixing device. The sampled water is filtered downward through the sand core filter cups, then filtered downward through the filter membrane in the filter membrane holder, and then through the filter tube of the sand core filter head into the triangular container. After filtration, the sand core filter head, filter membrane holder, and sand core filter cups are released from the fixing device, the sand core filter cups are removed, and the filter membrane holder is removed as a whole. The filter membrane holder is dried as a whole, and then weighed without contacting the filter membrane. This device can dry and cool the filter membrane holder directly without removing the filter membrane, effectively protecting the filter membrane and improving the accuracy of the results.

[0011] Furthermore, since the filter membrane holder includes an upper filter membrane holder and a lower filter membrane holder, which are threadedly connected and fixed, the filter membrane is placed on the lower filter membrane holder, and the upper filter membrane holder is provided with a pressure ring to press the filter membrane. The outer wall of the lower filter membrane holder is in contact with the inner wall of the filter section. In this way, after the filter membrane is placed on the lower filter membrane holder, it is then screwed tightly with the upper filter membrane holder in thread engagement, so that the pressure ring presses down on the filter membrane, ensuring that the filter membrane will not move when filtering the sampled water, making the filtration results more accurate. Moreover, when the upper and lower filter membrane holders are stacked on the filter section of the sand core filter head, it can be ensured that the upper and lower filter membrane holders will not shake, and the installation is stable.

[0012] Furthermore, since the upper outer edge of the filter section is provided with a lower outer edge ring, and the upper outer edge of the upper filter membrane holder is provided with a corresponding middle outer edge ring, the upper filter membrane holder is hung on the lower outer edge ring of the filter section through the middle outer edge ring, and the lower outer edge of the sand core filter cup is provided with an upper outer edge ring, the upper outer edge ring is stacked on the middle outer edge ring, and the fixing device is a filter clamp. The lower outer edge ring, the middle outer edge ring, and the upper outer edge ring are fixed and sealed by the filter clamp. In this way, the middle outer edge ring can be hung on the lower outer edge ring, and then the upper outer edge ring is stacked on the middle outer edge ring. Then the filter clamp can be opened to clamp the lower outer edge ring and the upper outer edge ring, thereby completing the fixation. The structure is simple and easy to operate.

[0013] Furthermore, since the vent is connected to an air pump via a connecting pipe, and a filter structure is provided at the outlet of the vent; since the housing is connected to the inside of the triangular container and the vent is connected to the housing, negative pressure can be generated by evacuating the triangular container, which will accelerate the filtration of the sampled water and increase the speed.

[0014] Furthermore, since the mouth and the fitting part of the triangular receiving bottle are both equipped with matching rubber sleeves, fitting the sand core filter head onto the mouth of the triangular receiving bottle can effectively seal the mouth and the fitting part, and also provides a certain degree of damping during fitting, making it convenient for disassembly and assembly. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0017] Figure 2 This is a half-sectional view of an embodiment of the present utility model;

[0018] Figure 3 This is a perspective view of the filter membrane holder according to an embodiment of the present invention;

[0019] Figure 4 yes Figure 2 A magnified view of the area;

[0020] In the attached diagram: 1. Triangular receiving bottle; 2. Sand core filter head; 3. Sand core filter cup; 4. Set part; 5. Filter part; 6. Vent; 7. Filter tube; 8. Flow hole; 9. Filter membrane; 10. Upper filter membrane receiving seat; 11. Lower filter membrane receiving seat; 12. Pressure ring; 13. Lower outer edge ring; 14. Middle outer edge ring; 15. Upper outer edge ring; 16. Filter clamp; 17. Vacuum pump; 18. Filter vacuum membrane; 19. Pressure plate; 20. Connecting pipe. Detailed Implementation

[0021] The present invention will be further described in detail below through specific embodiments.

[0022] like Figures 1 to 3As shown, a filtration device for detecting suspended solids in water sampling includes a triangular receiving bottle, a sand core filter head 2, and a sand core filter cup 3. The sand core filter head 2 includes a fitting part 4 and a filtration part 5. A vent 6 is installed on the fitting part 4. The sand core filter head 2 is sealed and fitted onto the mouth of the triangular receiving bottle through the fitting part 4. A filter tube 7 communicating with the filtration part 5 is provided inside the fitting part 4. The filter tube 7 is inserted into the mouth of the triangular receiving bottle, and there is a gap between the filter tube 7 and the mouth of the triangular receiving bottle. The vent 6 on the fitting part 4 communicates with the inside of the triangular receiving bottle. A filter membrane 9 receiving seat is stacked inside the filtration part 5. The inner wall of the filter membrane 9 receiving seat is a closed structure. The bottom of the filter membrane 9 receiving seat has a flow hole 8. A filter membrane 9 is placed at the bottom of the filter membrane 9 receiving seat. The sand core filter cup 3 is stacked on the filter membrane 9 receiving seat. The two ends of the sand core filter cup 3 are connected. The sand core filter head 2, the filter membrane 9 receiving seat, and the sand core filter cup 3 are fixed and sealed by a fixing device.

[0023] In this embodiment, the filter membrane 9 receiving seat includes an upper filter membrane receiving seat 10 and a lower filter membrane receiving seat 11. The upper filter membrane receiving seat 10 and the lower filter membrane receiving seat 11 are threadedly connected and fixed. The filter membrane 9 is placed on the lower filter membrane receiving seat 11. The upper filter membrane receiving seat 10 is provided with a pressure ring 12 to press the filter membrane 9. The outer wall of the lower filter membrane receiving seat 11 is in contact with the inner wall of the filter part 5. The upper filter membrane receiving seat 10 is cylindrical and is provided with a pressure ring 12 at the bottom. The lower filter membrane receiving seat 11 is provided with a flow hole 8. The filter membrane 9 covers the flow hole 8. By threading the lower filter membrane receiving seat 11 onto the upper filter membrane receiving seat 10, the filter membrane 9 will be effectively pressed, preventing the filter membrane 9 from moving during the filtration of the sampled water. It also makes it easy to remove the filter membrane 9 and improves the use effect.

[0024] Furthermore, the filter section 5 has a lower outer edge ring 13 at its upper outer edge, and the upper filter membrane receiving seat 10 has a corresponding middle outer edge ring 14 at its upper outer edge. The upper filter membrane receiving seat 10 is hung on the lower outer edge ring 13 of the filter section 5 via the middle outer edge ring 14. The sand core filter cup 3 has an upper outer edge ring 15 at its lower outer edge, and the upper outer edge ring 15 is stacked on the middle outer edge ring 14. The fixing device is a filter clamp 16, and the lower outer edge ring 13, middle outer edge ring 14, and upper outer edge ring 15 are fixed and sealed by the filter clamp 16. The upper filter membrane holder 10 is effectively stacked on the filter section 5 via the middle outer ring 14 and the middle outer ring 15. Then, the sand core filter cup 3 is stacked on the middle outer ring 14 via the upper outer ring 15. In this way, the lower outer ring 13, the middle outer ring 14 and the upper outer ring 15 can effectively increase the contact area, which facilitates the stacking of the sand core filter head 2, the filter membrane 9 holder and the sand core filter cup 3, and also facilitates the fixing of the filter clip 16. The filter clip 16 is a structure that is already available on the market. It can clamp and press the upper outer ring 15 and the lower outer ring 13 to maintain a certain clamping force. The structure is simple and the operation is convenient.

[0025] like Figure 2 As shown, the vent 6 is connected to a vacuum pump 17 via a connecting pipe 20, and a filter structure is provided at the outlet of the vent 6. Since the housing 4 is connected to the inside of the triangular container bottle, and the vent 6 is connected to the housing 4, negative pressure can be generated by evacuating the triangular container bottle, which will accelerate the filtration of the sampled water and increase the speed. Furthermore, the filter structure includes a filter vacuum membrane 18, and a pressure plate 19 is threadedly connected to the outlet of the vent 6. The filter vacuum membrane 18 is located inside the pressure plate 19. By threading the pressure plate 19 onto the vent 6, the filter vacuum membrane 18 can be firmly installed at the outlet of the vent 6. This can effectively isolate the outside of the vent 6 from the inside of the triangular container bottle and improve the usage effect.

[0026] In this embodiment, the mouth of the triangular container bottle and the sleeve part 4 are both provided with mutually cooperating rubber sleeves; this can effectively ensure the sealing effect, and also has a certain damping when sleeved, making it convenient to disassemble and assemble.

[0027] The working principle of this embodiment is as follows: the air pump 17 draws air, and the sampled water in the sand core filter cup 3 is filtered downward under negative pressure. Then it is filtered downward through the filter membrane 9 and through the filter tube 7 of the sand core filter head 2. The filtered sampled water enters the triangular container bottle. After filtration, the filter clamp 16 is loosened, the sand core filter cup 3 is removed, and the upper filter membrane holder 10 and the lower filter membrane holder 11 are removed through the middle and outer edge ring 14. Then the upper filter membrane holder 10 and the lower filter membrane holder 11 are dried. Then the lower filter membrane holder 11 can be weighed and compared by rotating the thread.

[0028] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and alterations to the technical solution of the present utility model without departing from its design spirit shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A filtration device for sampling water suspension detection, comprising a triangular receiving bottle, a sand core filter head and a sand core filter cup, characterized in that: The sand core filter head comprises a sleeving part and a filtering part, the sleeving part is provided with a breather, the sand core filter head is sleeved on the bottle mouth of the triangular containing bottle through the sleeving part, the sleeving part is provided with a filtering pipe connected with the filtering part, the filtering pipe is inserted into the bottle mouth of the triangular containing bottle, there is a gap between the filtering pipe and the bottle mouth of the triangular containing bottle, the breather on the sleeving part is communicated with the inside of the triangular containing bottle, the filtering part is provided with a filter membrane containing seat, the inner wall of the filter membrane containing seat is in a closed structure, the bottom of the filter membrane containing seat is provided with a flow hole, the filter membrane is placed on the bottom of the filter membrane containing seat, the sand core filter cup is stacked on the filter membrane containing seat, the sand core filter cup is communicated at both ends, and the sand core filter head, the filter membrane containing seat and the sand core filter cup are fixed and sealed through a fixing device.

2. A filtration device for sampling water suspensions for detection of the suspended matter as claimed in claim 1, characterized in that: The filter membrane containing seat comprises an upper filter membrane containing seat and a lower filter membrane containing seat, the upper filter membrane containing seat and the lower filter membrane containing seat are fixed in a threaded mode, the filter membrane is placed on the lower filter membrane containing seat, the upper filter membrane containing seat is provided with a pressing ring for pressing the filter membrane, and the outer wall of the lower filter membrane containing seat is attached to the inner wall of the filtering part.

3. A filtration device for sampling water suspensions for detection of the same as claimed in claim 2, characterized in that: The upper outer edge ring of the filtering part is provided with a corresponding middle outer edge ring, the upper filter membrane containing seat is hung on the lower outer edge ring of the filtering part through the middle outer edge ring, the lower outer edge of the sand core filter cup is provided with an upper outer edge ring, the upper outer edge ring is stacked on the middle outer edge ring, and the fixing device is a filter clamp.

4. A filtration device for sampling water suspensions for detection of the same as claimed in claim 3, characterized in that: The breather is connected with a suction pump through a connecting pipe, and the breather is provided with a filtering structure at the outlet.

5. A filtration device for sampling water suspensions for detection of the same as claimed in claim 1, characterized in that: The bottle mouth of the triangular containing bottle and the sleeving part are both provided with rubber sleeves matched with each other.

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