Pretreatment device convenient to clean

Abstract

The utility model relates to the technical field of water sample treatment, and discloses a pretreatment device convenient to clean, which comprises a shell, a partition plate is fixedly connected to the middle of the inner wall of the shell, an analyzer for analyzing a sample is mounted at the upper end of the front side of the partition plate, and a water tank is fixedly connected to the lower end of the front side of the partition plate. A filtering assembly is arranged in the water tank, a sampling pump is fixedly connected to the rear side of the bottom of the inner wall of the shell, a sampling pipe is fixedly connected to the left side of the sampling pump, the end of the sampling pipe penetrates through the right side of the shell, and a guide pipe is fixedly connected to the left side of the sampling pump. According to the utility model, the small-sized air pump is matched with the aeration pipe, a water sample is subjected to intermittent aeration, the filter membrane is subjected to vibration cleaning, the use performance of the filter membrane is improved, the maintenance amount is reduced, the traditional pretreatment instrument and the traditional analysis instrument are replaced to independently work, and the sample pretreatment and the sample analysis are uniformly carried out, so that the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of water sample treatment technology, and in particular to a pretreatment device that is easy to clean. Background Technology

[0002] The STH-027 membrane preprocessor is a water sample collection and pretreatment sampling device with an ultra-membrane filtration unit. It is mainly used in sampling situations where precise filtration of particulate impurities in water samples is required. The entire pretreatment process is completed by the built-in controller. Water samples are collected by an external water pump controlled by the preprocessor. After entering the buffer tank, the water samples undergo effective pretreatment through the membrane.

[0003] Existing pretreatment devices often include a filter at the sampling inlet for coarse filtration. However, this can easily clog the filter when there is excessive sludge concentration or suspended solids, or when the water quality is complex. Manual cleaning of the filter is also cumbersome, and coarse filtration cannot completely remove finer impurities. These small particles can enter the sensor measurement unit, causing wear and tear on internal equipment and affecting its lifespan. Another approach involves adding a filter at the sampling inlet and a filter tank inside the analysis cabinet for sedimentation, then taking the supernatant from the water sample for analysis. This approach also suffers from filter clogging, and the long sedimentation time makes the sedimentation tank difficult to clean, further extending the instrument measurement and sampling time. Traditional control methods allow pretreatment and analysis instruments to operate independently, making unified operation or compatibility impossible. This results in electrical equipment operating under high load for extended periods, leading to high power consumption, slow operation, high failure rate, and large storage requirements. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pretreatment device that is easy to clean. The device integrates pretreatment and sample analysis through a control unit, which improves work efficiency. Furthermore, the aeration and cleaning mechanism facilitates cleaning of the device, improves the performance of the filter membrane, and reduces maintenance.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A pretreatment device for easy cleaning includes a housing. A partition is fixedly connected to the middle of the inner wall of the housing. An analyzer for analyzing samples is installed on the upper front side of the partition. A water tank is fixedly connected to the lower front side of the partition. A filter assembly is installed inside the water tank. A sampling pump is fixedly connected to the rear bottom of the inner wall of the housing. A sampling tube is fixedly connected to the left side of the sampling pump. The end of the sampling tube passes through the right side of the housing. A conduit is fixedly connected to the left side of the sampling pump. The end of the conduit passes through the lower end of the partition and is fixedly connected to the middle left side of the water tank. A filter assembly is installed in the middle of the conduit. The equipment includes an inlet valve, an overflow pipe fixedly connected to the upper right side of the water tank, a discharge pipe fixedly connected to the bottom of the water tank, a discharge valve installed in the middle of the discharge pipe, and a drain pipe fixedly connected to the ends of the discharge pipe and the overflow pipe. The end of the drain pipe passes through the right side of the outer casing. A sample delivery assembly is installed on the upper left side of the water tank to deliver the pretreated liquid to the analyzer for analysis. A cleaning assembly is installed on the upper right side of the water tank for cleaning the equipment after use. A power distribution control cabinet is fixedly connected to the upper rear side of the partition to control and coordinate the operation of various structures of the equipment.

[0007] Furthermore, the sample delivery assembly includes a sample delivery pump fixedly connected to the left side of the water tank, a first sample delivery tube fixedly connected to the right side of the sample delivery pump, the end of the first sample delivery tube passing through the inside of the water tank, and a second sample delivery tube fixedly connected to the upper end of the sample delivery pump, the end of the second sample delivery tube passing through the inside of the analyzer.

[0008] Furthermore, the cleaning component includes a small air pump fixedly connected to the right side of the water tank, and an aeration pipe fixedly connected to the left side of the small air pump, with the left end of the aeration pipe located inside the water tank.

[0009] Furthermore, the filtration assembly includes slide rails fixedly connected to the left and right sides of the inner wall of the water tank, and a filter membrane is installed on the inner side of the slide rails.

[0010] Furthermore, a reagent kit is installed on the front inner wall of the outer shell for storing the required reagents for convenient use.

[0011] Furthermore, rotary switch covers are installed on both the front and rear sides of the housing.

[0012] Furthermore, an air conditioner is fixedly connected to the upper front side of the front cover plate, and a protective cover is installed on the upper side of the air conditioner.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, in order to reduce the amount of suspended solids adhering to the surface of the filter membrane in the membrane pretreatment flow tank and reduce membrane clogging, a small air pump and aeration pipe are used to intermittently aerate the water sample for 2 minutes and stop for 30 minutes to vibrate and clean the filter membrane. The wastewater generated during cleaning is discharged from the discharge pipe, thereby improving the performance of the filter membrane and reducing maintenance.

[0015] 2. In this utility model, the built-in controller in the power distribution control cabinet can uniformly schedule the analyzer, sampling pump, inlet valve, outlet valve, sample delivery pump and small air pump, replacing the traditional independent operation of pretreatment and analysis instruments. This allows sample pretreatment and sample analysis to be carried out in a unified manner, thereby improving work efficiency and avoiding the problems of electrical equipment running under high load for a long time, resulting in power consumption, slow operation, high failure rate and large storage space due to the inability to work in a unified manner or use in a compatible manner. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of a pretreatment device for easy cleaning proposed in this utility model;

[0017] Figure 2 This is a front view of the internal structure of a pretreatment device that is easy to clean, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the back of a pretreatment device that is easy to clean, as proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the water tank of a pretreatment device that is easy to clean, as proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the internal structure of the water tank of a pretreatment device that is easy to clean, as proposed in this utility model.

[0021] Legend:

[0022] 1. Outer casing; 2. Partition plate; 3. Analyzer; 4. Water tank; 5. Sampling pump; 6. Sampling tube; 7. Guide tube; 8. Injection valve; 9. Overflow pipe; 10. Discharge pipe; 11. Discharge valve; 12. Discharge pipe; 13. Power distribution control cabinet; 14. Sample delivery pump; 15. First sample delivery tube; 16. Second sample delivery tube; 17. Small air pump; 18. Aeration pipe; 19. Slide rail; 20. Filter membrane; 21. Reagent kit; 22. Cover plate; 23. Air conditioner; 24. Protective cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a pretreatment device that is easy to clean, comprising a housing 1, a partition 2 fixedly connected to the middle of the inner wall of the housing 1, an analyzer 3 for analyzing samples mounted on the upper front side of the partition 2, a water tank 4 fixedly connected to the lower front side of the partition 2, a sampling pump 5 fixedly connected to the rear bottom of the inner wall of the housing 1, a sampling tube 6 fixedly connected to the left side of the sampling pump 5, the end of the sampling tube 6 passing through the right side of the housing 1, and a conduit 7 fixedly connected to the left side of the sampling pump 5. The lower end of the partition 2 is fixedly connected to the middle left side of the water tank 4. The middle of the conduit 7 is equipped with an injection valve 8. The upper right side of the water tank 4 is fixedly connected with an overflow pipe 9. The bottom of the water tank 4 is fixedly connected with a discharge pipe 10. The middle of the discharge pipe 10 is equipped with a discharge valve 11. The ends of the discharge pipe 10 and the overflow pipe 9 are fixedly connected to a discharge pipe 12. The end of the discharge pipe 12 passes through the right side of the outer shell 1. The upper rear side of the partition 2 is fixedly connected with a power distribution control cabinet 13, which is used to control and coordinate the operation of various structures of the equipment.

[0025] After the device is installed in a suitable location, the sampling pump 5 is started by controlling the power distribution control cabinet 13. The water sample to be treated is extracted through the sampling tube 6 and injected into the water tank 4 through the sampling tube 6 and the conduit 7. The water sample is left to stand in the water tank 4 to pre-treat the water sample, causing impurities to precipitate. The supernatant is then introduced into the analyzer 3 for analysis. After analysis, the discharge valve 11 can be opened to discharge the water sample and sediment. The power distribution control cabinet 13 mainly consists of power distribution, PLC control, touch screen, lightning protection unit, and switch. The time can be set according to the parameters on the touch screen and communicated by the PLC controller via Modbus RTU. The instrument is triggered to measure and sample. The sampling time interval is initially set to 12 time setting points, which can be set to units such as minutes, hours, and seconds. The touch screen interface provides parameter setting interface, equipment operation interface, data recording and query interface, data export interface, PLC time calibration interface, alarm setting and alarm recording screen. The built-in controllers in the power distribution control cabinet 13 can uniformly schedule the analyzer 3, sampling pump 5, inlet valve 8, outlet valve 11, sample delivery pump 14 and small air pump 17, replacing the traditional independent work of pretreatment and sample analysis, so that sample pretreatment and sample analysis can work in a unified manner, thereby improving work efficiency.

[0026] Reference Figure 1 , Figure 4 and Figure 5 The inner walls of the water tank 4 are fixedly connected to slide rails 19 on both sides. A filter membrane 20 is installed inside the slide rails 19. A sample delivery pump 14 is fixedly connected to the left side of the water tank 4. A first sample delivery tube 15 is fixedly connected to the right side of the sample delivery pump 14. The end of the first sample delivery tube 15 passes through the inside of the water tank 4. A second sample delivery tube 16 is fixedly connected to the upper end of the sample delivery pump 14. The end of the second sample delivery tube 16 passes through the inside of the analyzer 3. A small air pump 17 is fixedly connected to the right side of the water tank 4. An aeration tube 18 is fixedly connected to the left side of the small air pump 17. The left end of the aeration tube 18 is located inside the water tank 4. A reagent kit 21 is installed on the front side of the inner wall of the outer shell 1 for storing the required reagents for easy use. Rotary switch covers 22 are installed on both the front and rear sides of the outer shell 1. An air conditioner 23 is fixedly connected to the upper front side of the front cover 22. A protective cover 24 is installed on the upper side of the air conditioner 23.

[0027] The sample pump 14 is controlled to extract the clear liquid after standing through the first sample tube 15 and introduce it into the analyzer 3 through the second sample tube 16 for sample analysis. The small air pump 17 is controlled to generate gas and intermittently aerate the water sample in the water tank 4 through the aeration tube 18. The gas is run for 2 minutes and stopped for 30 minutes to vibrate and clean the filter membrane 20. After cleaning, the gas is discharged through the discharge tube 10 and the discharge tube 12. This avoids the problems of electrical equipment running under high load for a long time, resulting in power consumption, slow operation, high failure rate and large storage space due to incompatibility or lack of unified operation.

[0028] Working principle: After the device is installed in a suitable location, the sampling pump 5 is started by controlling the power distribution control cabinet 13. The water sample to be treated is extracted through the sampling tube 6 and injected into the water tank 4 through the sampling tube 6 and the conduit 7. The water sample is left to stand in the water tank 4 and the impurities in the water are adsorbed by the filter membrane 20 to promote the sedimentation of the impurities. The sample delivery pump 14 is controlled to extract the clear liquid after standing through the first sample delivery tube 15 and introduce it into the analyzer 3 through the second sample delivery tube 16 for sample analysis. An overflow pipe 9 is set at the upper right side of the water tank 4 to discharge the overflowed sample liquid to avoid excessive overflow of sample liquid and short circuit of the device. After the sample analysis, the small air pump 17 is controlled to generate gas and intermittently aerate the water sample in the water tank 4 through the aeration pipe 18. The aeration is run for 2 minutes and stopped for 30 minutes to vibrate and clean the filter membrane 20. After cleaning, the gas is discharged through the discharge pipe 10 and the discharge pipe 12. The air conditioner 23 can regulate the temperature of the device.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pretreatment device that is easy to clean, characterized in that, The system includes an outer shell (1), a partition (2) fixedly connected to the middle of the inner wall of the outer shell (1), an analyzer (3) for analyzing samples installed on the upper front side of the partition (2), a water tank (4) fixedly connected to the lower front side of the partition (2), a filter assembly installed inside the water tank (4), a sampling pump (5) fixedly connected to the rear bottom of the inner wall of the outer shell (1), a sampling tube (6) fixedly connected to the left side of the sampling pump (5), the end of the sampling tube (6) passing through the right side of the outer shell (1), a conduit (7) fixedly connected to the left side of the sampling pump (5), the end of the conduit (7) passing through the lower end of the partition (2) and fixedly connected to the middle left side of the water tank (4), and an injection valve installed in the middle of the conduit (7). 8) An overflow pipe (9) is fixedly connected to the upper right side of the water tank (4). A discharge pipe (10) is fixedly connected to the bottom of the water tank (4). A discharge valve (11) is installed in the middle of the discharge pipe (10). A discharge pipe (12) is fixedly connected to the ends of the discharge pipe (10) and the overflow pipe (9). The end of the discharge pipe (12) passes through the right side of the outer shell (1). A sample delivery assembly is installed on the upper left side of the water tank (4) for sending the pretreated liquid to the analyzer (3) for analysis. A cleaning assembly is installed on the upper right side of the water tank (4) for cleaning the equipment after use. A power distribution control cabinet (13) is fixedly connected to the upper rear side of the partition (2) for controlling and coordinating the operation of various structures of the equipment.

2. The pretreatment device for easy cleaning according to claim 1, characterized in that: The sample delivery assembly includes a sample delivery pump (14) fixedly connected to the left side of the water tank (4), a first sample delivery tube (15) fixedly connected to the right side of the sample delivery pump (14), the end of the first sample delivery tube (15) passing through the inside of the water tank (4), and a second sample delivery tube (16) fixedly connected to the upper end of the sample delivery pump (14), the end of the second sample delivery tube (16) passing through the inside of the analyzer (3).

3. The pretreatment device for easy cleaning according to claim 1, characterized in that: The cleaning assembly includes a small air pump (17) fixedly connected to the right side of the water tank (4), and an aeration pipe (18) fixedly connected to the left side of the small air pump (17). The left end of the aeration pipe (18) is located inside the water tank (4).

4. The pretreatment device for easy cleaning according to claim 1, characterized in that: The filter assembly includes slide rails (19) fixedly connected to the left and right sides of the inner wall of the water tank (4), and a filter membrane (20) is installed on the inner side of the slide rails (19).

5. The pretreatment device for easy cleaning according to claim 1, characterized in that: The reagent kit (21) is installed on the front side of the inner wall of the outer shell (1) for storing the required reagents and for convenient use.

6. The pretreatment device for easy cleaning according to claim 1, characterized in that: Rotary switch covers (22) are installed on both the front and rear sides of the outer casing (1).

7. The pretreatment device for easy cleaning according to claim 6, characterized in that: An air conditioner (23) is fixedly connected to the upper front end of the cover plate (22) on the front side, and a protective cover (24) is installed on the upper side of the air conditioner (23).

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