On-site collection, suction filtration and enrichment device for water sample of two insects

Abstract

The utility model relates to the technical field of on-site water sample collection, and particularly discloses an on-site two-worm water sample collection, suction filtration and enrichment device which comprises a water pump and an equipment shell, a filter is arranged in the equipment shell, and the filter is communicated with a water inlet and a water outlet in the equipment shell through pipelines. The device is characterized in that the water inlet and the water outlet are formed in the opposite sides of the device shell, the water inlet is higher than the water outlet, the water pump is arranged between the filter and the water outlet, and the technical problems that in the prior art, in the miniaturization process of the two-worm water sample collection, suction filtration and enrichment device, a small-size pump body is adopted, so that power is insufficient, and the filtering efficiency is low are solved.

Description

Technical Field

[0001] This utility model relates to the field of on-site water sample collection, specifically a device for on-site collection, filtration, and enrichment of two types of insect water samples. Background Technology

[0002] The standard testing methods for urban water supply quality include the detection of Giardia lamblia and Cryptosporidium (referred to as "the two parasites") in water bodies using the membrane concentration / density gradient separation fluorescent antibody method. This method requires filtering the sampled water to enrich and concentrate the two parasites. Traditionally, water filtration devices are complex, bulky, and inconvenient to carry, so testing personnel typically transport collected water samples to the laboratory for filtration. However, this method increases testing costs due to the need to transport water samples, and also requires sampling personnel to carry large quantities of water samples, resulting in a high workload.

[0003] To address the aforementioned issues, portable water sample processing devices have emerged in the prior art. For example, patent application number 202420540657.6 discloses a device for the filtration, enrichment, and detection of two insects. This device combines a small filter, pump, and valve to form a portable small filtration device, which is convenient for filtration during field sampling. Only the filtered two insect samples need to be brought back, thus greatly reducing the workload.

[0004] While this miniaturized filtration device solves the problems of complex structure, large size, and inconvenience in carrying existing water sample filtration devices, the use of a smaller water pump during the miniaturization process results in insufficient pump power, leading to low filtration efficiency, long filtration time, and increased sampling time costs. Utility Model Content

[0005] The purpose of this utility model is to provide a device for on-site collection, filtration and enrichment of water samples from two insects, in order to solve the technical problem mentioned above in the prior art where the use of a small-volume pump body during the miniaturization of the two-insect water sample collection, filtration and enrichment device results in insufficient power and low filtration efficiency.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: a device for on-site collection, filtration and enrichment of water samples from two insects, including a water pump and a housing, wherein a filter is provided in the housing, and the filter is connected to the inlet and outlet of the housing via a pipe, characterized in that: the inlet and outlet are located on opposite sides of the housing, and the inlet is higher than the outlet, and the water pump is located between the filter and the outlet.

[0007] The beneficial effects of this implementation plan are as follows:

[0008] 1. In existing technologies, smaller water pumps are used to miniaturize sampling and filtration equipment. However, these smaller pumps often lack sufficient power, resulting in low filtration efficiency and long filtration times per sampling. Since multiple samples need to be collected during field sampling, the increased filtration time reduces the number of samples collected per day, requiring more time spent on field sampling and increasing the time cost of sampling. Using larger pumps, on the other hand, increases the overall size of the equipment, reducing portability. Therefore, it is necessary to improve filtration efficiency through the arrangement of equipment pipelines, pumps, and filters without changing the pump size. Comparative studies on pump placement design have shown that placing the pump between the filter and the outlet improves filtration efficiency. This suggests that the kinetic energy of the water sample decreases most rapidly as it passes through the filter media, which is the biggest factor contributing to the low overall filtration efficiency. In existing technologies, placing the pump between the inlet and the filter involves the pump applying power to the water before it passes through the filter media. This process not only requires the water to pass through the small pores of the filter media but also requires the expulsion of air from those pores, resulting in excessive kinetic energy consumption and low filtration efficiency. By placing the water pump between the filter and the outlet, all air between the inlet and outlet is expelled when the pump starts, including air in the filter media. Therefore, water does not need to expel air as it flows through the filter media, resulting in higher filtration efficiency. Thus, this application improves filtration efficiency by placing the water pump between the outlet and the filter compared to existing technologies.

[0009] 2. In the prior art, the water pump is placed between the inlet and the filter, which is a positive pressure dynamic filtration that uses the water pump to apply pressure. However, in this application, the water pump is placed between the filter and the outlet, which is a negative pressure filtration, and the filtration efficiency of negative pressure filtration is higher.

[0010] 3. In the prior art, the water pump is placed between the inlet and the filter. The water sample passes through the water pump first and then through the filter. Therefore, the particulate matter in the water sample will impact the water pump, and microorganisms will adhere to the inside of the water pump, causing the pump blades to be impacted and eroded, reducing its service life. However, in this application, the water pump is placed after the filter. After the water sample passes through the filter, the water is cleaner and has less impact on the water pump. Therefore, the water pump of this application has a longer service life.

[0011] Furthermore, the water pump is a miniature vacuum water pump, which can pump both water and air, thus perfectly matching this application. This application requires air to be purged before starting, and water samples are discharged after filtration. Compared with using a regular water pump, it avoids damage to the pump body caused by dry running.

[0012] Furthermore, the equipment housing is hinged with an inspection cover, which includes a movable plate on the top of the equipment housing and a curved plate on the side wall of the equipment housing. The design of the inspection cover, which covers the top surface and front side wall of the equipment housing, provides ample opening space for maintenance, facilitating operations by maintenance personnel inside the equipment housing.

[0013] Furthermore, a hose storage compartment is provided on the side wall of the device housing. During sampling, it is sometimes unavoidable to use hoses to extend the inlet and outlet. However, hoses are easily lost if stored separately. Therefore, a hose storage compartment is designed to prevent hose loss.

[0014] Furthermore, a flow meter and a solenoid valve are provided between the water inlet and the filter.

[0015] Furthermore, the miniature vacuum water pump, flow meter, and solenoid valve are all electrically connected to a control panel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model after partially opening the shell.

[0018] Figure 3 This is a schematic diagram of the structure from other perspectives. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: equipment housing 1, inspection cover 11, rotating shaft 111, hose storage 12, control panel 13, water inlet pipe 2, water inlet 21, filter 3, water outlet pipe 4, water outlet 41, vacuum water pump 5, flow meter 6, and solenoid valve 7.

[0021] Implementation, for example, attached Figure 1-3 As shown: A device for on-site collection, filtration, and enrichment of water samples containing two insects, including a housing 1, for... Figure 1The direction is a descriptive term. Except for the front and top surfaces, the other four sides of the equipment housing 1 are flat steel structures. These four sides are welded together to form an upward and forward-opening box structure. The top surface of the equipment housing 1 has two plates. The plate near the back is a fixed plate, welded to the left, right, and rear steel plates. The plate near the front is a movable plate. The fixed plate has a rotating shaft 111, and the movable plate is hinged to the fixed plate using a hinge structure. The front of the equipment housing 1 is a curved plate with an arc surface. The curved plate and the leading edge of the movable plate are welded together to form an inspection cover 11. Therefore, the inspection cover 11 can rotate around the rotating shaft 111, thus opening the equipment housing 1, or it can be closed downwards to seal the equipment housing 11. When the inspection cover 11 is closed, its lower end is bolted to the bottom plate of the equipment housing 1.

[0022] A through-hole is formed at the upper end of the left side wall of the equipment housing 1, and a water inlet pipe 2 is installed inside the through-hole. The water inlet pipe 2 and the through-hole on the left side wall form an interference fit, and the water inlet 21 on the water inlet pipe 2 extends out of the left side wall. A through-hole is also formed at the lower end of the right side wall of the equipment housing 2, and a water outlet pipe 4 is installed inside the through-hole. The structure is the same as that of the water inlet pipe 2, and the water outlet 41 of the water outlet pipe 4 also extends out of the right side wall. Therefore, the water inlet 21 and the water outlet 41 of the equipment in this application are set on opposite side walls of the equipment housing 1, and the height of the water inlet 21 is higher than the height of the water outlet 41.

[0023] A rectangular opening is cut at the lower end of the left side wall, and this rectangular opening serves as the access point. A receiving cavity with an opening to the left is welded onto the base plate of the main body 1. During the sampling process, the inlet 21 and outlet 41 may require external hoses, and the receiving cavity can serve as a hose storage tank 12 for the hoses.

[0024] The equipment housing 1 has four square columns welded to its base plate. A mounting platform is formed on each column using square plates. The mounting platform is fixed to the columns with screws. A filter 3 is mounted on the mounting platform. The upper end of the filter 3 is connected to the inlet pipe 2, and the lower end is connected to the outlet pipe 4. A through hole for the outlet pipe 2 is provided in the middle of the mounting platform, allowing the outlet pipe 4 to pass through the mounting platform and connect to the filter 3. The filter 3 includes internal filter media, which is existing technology and will not be described in detail here. Figure 3 The direction is described as the direction. A mounting plate is provided between the two columns on the left. A fixing block is provided on the mounting plate. A hole is provided in the middle of the fixing block for the water inlet pipe 2 to pass through. Therefore, the mounting plate can be used to support the water inlet pipe 2.

[0025] A vacuum water pump 5 is installed on the water outlet pipe 4 between the filter 3 and the water outlet 41. The vacuum water pump 5 is a miniature vacuum water pump. A flow meter 6 and a solenoid valve 7 are installed on the water inlet pipe between the water inlet 21 and the filter 3. After installation, the airtightness between the water inlet pipe 2, the filter 3 and the water outlet pipe 4 must be ensured.

[0026] A control panel 13 is provided on the inspection cover 11. The control panel 13 includes a small host, which includes a display screen and control buttons. The flow meter 6, solenoid valve 7, and vacuum water pump 5 in this device are all electrically connected to the small host of the control panel 13 located on the arc surface of the inspection cover 11. Therefore, the flow meter 6 can transmit the detected flow data to the small host of the control panel 13 and display it on the display screen. It can also control the opening and closing of the solenoid valve 7 and vacuum water pump 5 through the control buttons of the small host and display it on the display screen.

[0027] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A two-worm water sample on-site collection and filtration enrichment device, comprising a water pump and a device shell, a filter is arranged in the device shell, and the filter is connected with a water inlet and a water outlet on the device shell by pipelines, characterized in that: The water inlet and the water outlet are arranged at opposite sides of the equipment shell, and the water inlet is higher than the water outlet. ​ 2. The two-worm in-situ water sample collection, filtration and concentration device according to claim 1, characterized in that: The water pump is a micro vacuum water pump.

3. The two-worm in-situ water sample collection, filtration and concentration device according to claim 1, characterized in that: The equipment shell is hinged with an inspection cover plate, which comprises a movable plate arranged on the top of the equipment shell and a curved plate arranged on the side wall of the equipment shell.

4. The two-worm in-situ water sample collection, filtration and concentration device according to claim 1, characterized in that: A hose storage bin is arranged on the side wall of the equipment shell.

5. The two-worm in-situ water sample collection, filtration and concentration device of claim 2, wherein: A flow meter and an electromagnetic valve are arranged between the water inlet and the filter.

6. The two-worm in-situ water sample collection, filtration and concentration device according to claim 5, characterized in that: The micro vacuum water pump, the flow meter and the electromagnetic valve are electrically connected with a control panel.

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