A pre-treatment device for analyzing a water sample

Abstract

The utility model provides a kind of pretreatment device for analyzing water sample, it is related to water sample processing technical field, the pretreatment device includes: box;At least two membrane boxes, membrane box is arranged in the inside of box, membrane box is equipped with at least one opening, membrane box is equipped with water outlet hole and air inlet hole;At least two diaphragms, diaphragm is blocked in opening position, diaphragm is used to filter water sample;Ultrasonic cleaning module, the output part of ultrasonic cleaning module is arranged in the inside of box;Water pumping module, the input part of water pumping module is connected with water outlet hole;Aeration module, the output part of aeration module is connected with air inlet hole;The pretreatment device integrates aeration and ultrasonic wave, clean simultaneously inside and outside diaphragm, improve cleaning effect and cleaning efficiency, and diaphragm is not easily damaged, improve diaphragm service life, do not need to regularly stop maintenance, also reduce workload.

Description

Technical Field

[0001] This utility model belongs to the field of water sample treatment technology, and more specifically, relates to a pretreatment device for analyzing water samples. Background Technology

[0002] Currently, wastewater samples with high sludge concentrations need to be filtered before analysis to obtain analytically meaningful dissolved data, protect analytical instruments, and ensure data quality. However, during continuous water quality monitoring, the membranes used for filtration are prone to clogging and require regular cleaning, which cannot meet the real-time monitoring needs of wastewater with high sludge concentrations. Furthermore, the traditional method of cleaning clogged membranes is to use chemical agents, which can easily damage the membranes, resulting in short lifespans and requiring regular shutdowns for maintenance, which is quite labor-intensive. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a pretreatment device for analyzing water samples. This solves the problems mentioned in the background art, such as the inability of existing water sample pretreatment devices to monitor wastewater with high sludge concentrations in real time, and the tendency of traditional methods to damage membranes when using chemical agents to clean them.

[0004] To achieve the above objectives, this utility model provides a pretreatment device for analyzing water samples, the pretreatment device comprising: Box; At least two membrane boxes are disposed inside the housing. Each membrane box has at least one opening and is provided with a water outlet and an air inlet. At least two membranes are provided, which seal the opening and are used to filter water samples. An ultrasonic cleaning module, wherein the output section of the ultrasonic cleaning module is located inside the housing; A pumping module, wherein the input part of the pumping module is connected to the outlet hole; An aeration module, wherein the output of the aeration module is connected to the air inlet.

[0005] Preferably, the pumping module includes: A water pump, wherein the water pump is connected to each of the water outlets via a pipeline; At least two pumping control valves are provided, with one of the pumping control valves installed on the pipeline between the pump and each of the outlet holes.

[0006] Preferably, the pretreatment device for analyzing water samples further includes at least two pressure sensors, with one pressure sensor installed on the pipeline between the water pump and each of the water outlets.

[0007] Preferably, the aeration module includes: An aeration pump, wherein the aeration pump is connected to each of the air inlets via a pipeline; At least two aeration control valves are provided, with one aeration control valve installed on the pipeline between the aeration pump and each of the air inlets.

[0008] Preferably, the membrane box is disposed in the middle of the box body.

[0009] Preferably, the ultrasonic cleaning module includes two ultrasonic cleaning plates, which are disposed on both sides of the interior of the housing. Each ultrasonic cleaning plate has at least four ultrasonic transducers inside, and the ultrasonic transducers are electrically connected to an ultrasonic generator.

[0010] Preferably, the ultrasonic cleaning plate is provided with at least two 28kHz ultrasonic transducers and at least two 40kHz ultrasonic transducers.

[0011] Preferably, the pretreatment device for analyzing water samples further includes a water sample cup, and the output end of the pumping module is used to be installed inside the water sample cup.

[0012] Preferably, the enclosure is an open enclosure.

[0013] Preferably, the pretreatment device for analyzing water samples further includes a controller, which is electrically connected to the ultrasonic cleaning module, the pumping module, and the aeration module.

[0014] This invention provides a pretreatment device for analyzing water samples. Its advantages include: the device contains at least two membrane chambers; a pumping module can be controlled to draw water from one portion of the two chambers; the water sample, after being filtered through the membranes, enters one portion of the chambers and is then drawn to the outside for use by analytical instruments; when the membranes in one portion of the chambers become clogged, the pumping module can be controlled to draw water from the other portion of the chambers for cleaning; this allows for simultaneous operation of one portion of the chambers while the other is cleaned, meeting the real-time monitoring needs of wastewater with high sludge concentrations; during cleaning, an aeration module can be controlled to blow water from the inside out, while an ultrasonic cleaning module is simultaneously activated to generate ultrasonic waves that disturb the water sample, effectively cleaning the outer surface of the membranes; this pretreatment device integrates aeration and ultrasonic waves, cleaning both the inside and outside of the membranes simultaneously, improving cleaning effect and efficiency, minimizing damage to the membranes, extending their lifespan, eliminating the need for regular maintenance shutdowns, and reducing workload.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0017] Figure 1 A schematic diagram of the internal structure of a pretreatment device for analyzing water samples according to an embodiment of the present invention is shown.

[0018] Explanation of reference numerals in the attached figures: 1. Housing; 2. Membrane box; 3. Water outlet; 4. Air inlet; 5. Ultrasonic cleaning plate. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0020] This utility model provides a pretreatment device for analyzing water samples, the pretreatment device comprising: Box 1; At least two membrane boxes 2 are provided inside the housing 1. Each membrane box 2 has at least one opening and is provided with a water outlet 3 and an air inlet 4. At least two membranes are used to filter water samples, with the membranes sealing the openings. An ultrasonic cleaning module, the output section of which is located inside the housing 1; The pumping module has its input section connected to the outlet 3. The aeration module has its output section connected to the air inlet 4.

[0021] Specifically, to address the limitations of existing water sample pretreatment devices in real-time monitoring of wastewater with high sludge concentrations, and the tendency for membrane damage during traditional chemical cleaning methods, this invention provides a pretreatment device for analyzing water samples. The device's housing 1 contains at least two membrane boxes 2. A pumping module can be controlled to draw water from a portion of the two membrane boxes 2. Water samples, after being filtered through the membranes, enter one portion of the membrane boxes 2 and are then drawn out for use by analytical instruments. When the membranes in one portion of the membrane boxes 2 become clogged, the pumping module can be controlled to draw water from the other portion of the membrane boxes 2, and then the water sample is processed. A portion of membrane boxes 2 can be cleaned, allowing some membrane boxes 2 to operate while others are cleaned. Alternatively, all membrane boxes 2 can be controlled to operate or be cleaned simultaneously, meeting the real-time monitoring needs of wastewater with high sludge concentrations. During cleaning, the aeration module can be controlled to blow the membrane from the inside out, while the ultrasonic cleaning module is simultaneously controlled to vibrate and generate ultrasonic waves to disturb the water sample, effectively cleaning the outer surface of the membrane. This pretreatment device integrates aeration and ultrasonic waves, cleaning both the inside and outside of the membrane simultaneously, improving cleaning effect and efficiency, minimizing damage to the membrane, extending membrane lifespan, eliminating the need for regular downtime maintenance, and reducing workload.

[0022] Preferably, the pumping module includes: A water pump is connected to each outlet 3 via a pipeline. At least two pumping control valves are provided, with one pumping control valve installed on the pipeline between the pump and each outlet 3.

[0023] Specifically, the pump is a peristaltic pump, and the pumping control valve is a solenoid valve. When the membranes on one part of the membrane box 2 become clogged, the pumping control valve connected to one part of the membrane box 2 can be closed, and the pumping control valve connected to the other part of the membrane box 2 can be opened.

[0024] Preferably, the pretreatment device for analyzing water samples further includes at least two pressure sensors, with one pressure sensor installed on the pipeline between the water pump and each outlet 3.

[0025] Specifically, by detecting changes in pipeline pressure after membrane filtration, the blockage and contamination status of the membrane can be determined in real time, providing a basis for determining when to clean it.

[0026] Preferably, the aeration module includes: An aeration pump is connected to each air inlet 4 via a pipeline. At least two aeration control valves are provided, with one aeration control valve installed on the pipeline between the aeration pump and each air inlet 4.

[0027] Specifically, the aeration control valve is a solenoid valve. When cleaning one part of the membrane capsule 2, the aeration control valve connected to one part of the membrane capsule 2 can be opened, and the aeration control valve connected to another part of the membrane capsule 2 can be closed. Then, cleaning one part of the membrane capsule 2 can be carried out, so that one part of the membrane capsule 2 can work while the other part of the membrane capsule is cleaned.

[0028] Preferably, the membrane box 2 is located in the middle of the box body 1.

[0029] Specifically, two openings are provided on the membrane box 2, and the membrane is fixed to the membrane box 2 by the frame.

[0030] Preferably, the ultrasonic cleaning module includes two ultrasonic cleaning plates 5, which are disposed on both sides inside the housing 1. The ultrasonic cleaning plates 5 are provided with at least four ultrasonic transducers inside, and the ultrasonic transducers are electrically connected to the ultrasonic generator.

[0031] Specifically, the ultrasonic cleaning plate 5 is set perpendicular to the long side of the membrane box 2.

[0032] Preferably, the ultrasonic cleaning plate 5 is provided with at least two 28kHz ultrasonic transducers and at least two 40kHz ultrasonic transducers.

[0033] Specifically, mixing two frequencies to treat different types of contaminants simultaneously can effectively clean the outer surface of the membrane.

[0034] Preferably, the pretreatment device for analyzing water samples further includes a water sample cup, and the output end of the pumping module is used to be placed inside the water sample cup.

[0035] Specifically, the water sample cup is used to collect filtered water samples.

[0036] Preferably, the housing 1 is an open housing.

[0037] Preferably, the pretreatment device for analyzing water samples further includes a controller, which is electrically connected to the ultrasonic cleaning module, the pumping module, and the aeration module.

[0038] In summary, when the pretreatment device for analyzing water samples of this application is implemented, the pretreatment device is equipped with two membrane boxes 2 inside the box. A water pump can be controlled to draw water from one of the membrane boxes 2. The water sample can be filtered through the membrane and enter one of the membrane boxes, and then drawn to the outside for use by the analytical instruments. When the membrane on one of the membrane boxes 2 becomes clogged, the water pump can be controlled to draw water from the other membrane box 2, and then the one membrane box 2 can be cleaned. It can realize that one membrane box 2 is working while the other membrane box 2 is being cleaned, or all membrane boxes 2 can be controlled to work or be cleaned at the same time. It can meet the needs of real-time monitoring of wastewater with high sludge concentration. During cleaning, the aeration pump can be controlled to blow the membrane from the inside out, and the ultrasonic cleaning module can be controlled to vibrate to generate ultrasonic waves to disturb the water sample, which can effectively clean the outer surface of the membrane. This pretreatment device integrates aeration and ultrasonic waves, and cleans the membrane inside and out at the same time, which improves the cleaning effect and cleaning efficiency, and is less likely to damage the membrane, thus increasing the membrane's service life. It does not require regular shutdown maintenance and also reduces workload.

[0039] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A pretreatment device for analyzing water samples, characterized in that, The pretreatment device includes: Box; At least two membrane boxes are disposed inside the housing. Each membrane box has at least one opening and is provided with a water outlet and an air inlet. At least two membranes are provided, which seal the opening and are used to filter water samples. An ultrasonic cleaning module, wherein the output section of the ultrasonic cleaning module is located inside the housing; A pumping module, wherein the input part of the pumping module is connected to the outlet hole; An aeration module, wherein the output of the aeration module is connected to the air inlet.

2. The pretreatment device for analyzing water samples according to claim 1, characterized in that, The pumping module includes: A water pump, wherein the water pump is connected to each of the water outlets via a pipeline; At least two pumping control valves are provided, with one of the pumping control valves installed on the pipeline between the pump and each of the outlet holes.

3. The pretreatment device for analyzing water samples according to claim 2, characterized in that, The pretreatment device for analyzing water samples also includes at least two pressure sensors, with one pressure sensor installed on the pipeline between the water pump and each of the outlet holes.

4. The pretreatment device for analyzing water samples according to claim 1, characterized in that, The aeration module includes: An aeration pump, wherein the aeration pump is connected to each of the air inlets via a pipeline; At least two aeration control valves are provided, with one aeration control valve installed on the pipeline between the aeration pump and each of the air inlets.

5. A pretreatment device for analyzing water samples according to claim 1, characterized in that, The membrane box is located in the middle of the box body.

6. A pretreatment device for analyzing water samples according to claim 5, characterized in that, The ultrasonic cleaning module includes two ultrasonic cleaning plates, which are disposed on both sides of the inside of the housing. Each ultrasonic cleaning plate has at least four ultrasonic transducers inside, and the ultrasonic transducers are electrically connected to an ultrasonic generator.

7. A pretreatment device for analyzing water samples according to claim 6, characterized in that, The ultrasonic cleaning plate is equipped with at least two 28kHz ultrasonic transducers and at least two 40kHz ultrasonic transducers.

8. A pretreatment device for analyzing water samples according to claim 1, characterized in that, The pretreatment device for analyzing water samples also includes a water sample cup, and the output end of the pumping module is used to be installed inside the water sample cup.

9. A pretreatment device for analyzing water samples according to claim 1, characterized in that, The enclosure is an open enclosure.

10. A pretreatment device for analyzing water samples according to claim 1, characterized in that, The pretreatment device for analyzing water samples also includes a controller, which is electrically connected to the ultrasonic cleaning module, the pumping module, and the aeration module.

Images