Sewage detection sampling gun

Abstract

The embodiment of the utility model provides a sewage detection sampling gun, which comprises a sampling pipe, a sampling pipe and a sampling pipe, the telescopic rod structure is connected with the sampling pipe and can be lengthened or shortened to guide sewage into the sampling pipe; the filtering device is positioned at an inlet at one end of the sampling pipe and is provided with multiple stages of filtering layers, and the multiple stages of filtering layers are arranged from coarse to fine along the flowing direction of the sewage; the stirrer is arranged in the sampling pipe and is used for stirring the sewage sample; the backflow prevention valve is mounted at one end, close to a user, of the sampling pipe and used for preventing the sewage from flowing back when suction is stopped. According to the scheme of the embodiment of the invention, the problem that the filter screen is easy to block when sewage containing a large number of solid particles is extracted due to unreasonable design of the filter screen of the sample gun can be solved.

Description

Technical Field

[0001] This application relates to the field of environmental monitoring equipment technology, specifically to a wastewater detection sampling gun. Background Technology

[0002] Wastewater sampling guns are devices specifically designed for extracting and testing wastewater samples. They can conveniently and efficiently obtain water samples from various complex environments for laboratory analysis. However, when extracting wastewater containing a large amount of solid particles, the filter screen of these sampling guns is prone to clogging. This not only affects sampling efficiency but may also lead to equipment damage, thereby increasing maintenance costs and operational complexity. Summary of the Invention

[0003] In view of this, the present disclosure provides a wastewater detection sampling gun that at least partially solves the problems existing in the prior art.

[0004] This application discloses a wastewater testing sampling gun, comprising:

[0005] Sampling tubes are used to store wastewater samples;

[0006] A telescopic rod structure is connected to the sampling tube and can be extended or shortened to guide sewage into the sampling tube;

[0007] The filtration device is located at the inlet of one end of the sampling tube and is provided with multiple filtration layers, which are arranged from coarse to fine along the direction of sewage flow.

[0008] A stirrer, placed inside the sampling tube, is used to agitate the wastewater sample; and

[0009] An anti-backflow valve is installed at the end of the sampling pipe closest to the user to prevent sewage from flowing back when pumping stops;

[0010] A water spray pipe is provided inside the sampling tube at a position corresponding to the multi-stage filter layer, for supplying clean water from an external water source to wash away solid contaminants adhering to the surface of the multi-stage filter layer after sampling; and

[0011] The sampling tube is equipped with a drain pipe for sending compressed air through the sampling tube into the filtration device.

[0012] In one specific embodiment, the multi-stage filtration layer includes at least three filtration components, each with a different preset maximum filtration pore size. The maximum filtration pore size of the coarse filtration layer is 3 mm, the maximum filtration pore size of the secondary filtration layer is 2 mm, and the maximum filtration pore size of the finest filtration layer is 1 mm.

[0013] In one specific embodiment, the water spray pipe is arranged along the axial direction of the sampling pipe, and water spray holes are provided at positions between the multi-stage filter layers.

[0014] In one specific embodiment, the agitator is provided with reverse propulsion blades in its rotating part to generate a reverse water flow while agitating.

[0015] In one specific embodiment, the reverse propulsion blade is a reverse blade disposed at the end of the helical shaft, and the helical direction of the reverse blade is opposite to that of the helical blade.

[0016] In one specific embodiment, an ultrasonic oscillation unit is provided on the outer surface of the multi-stage filter layer.

[0017] In one specific embodiment, the multi-stage filter layers are connected to each other by quick-release latches.

[0018] In one specific embodiment, a water flow pre-diversion plate located before the multi-stage filtration device is also included for initial distribution and slowing down the water flow rate.

[0019] In one specific embodiment, the water flow pre-diversion plate is a circular plate structure, and the plate surface is provided with multiple small holes of different diameters.

[0020] This disclosure provides a wastewater sampling gun, comprising: a sampling tube for storing wastewater samples; a telescopic rod structure connected to the sampling tube and capable of being extended or shortened to guide wastewater into the sampling tube; a filtration device located at the inlet of one end of the sampling tube and having multiple filtration layers arranged from coarse to fine along the wastewater flow direction; a stirrer placed inside the sampling tube for agitating the wastewater sample; and an anti-backflow valve installed at the end of the sampling tube near the user to prevent wastewater backflow when suction stops; wherein a water spray pipe is provided inside the sampling tube at a position corresponding to the multiple filtration layers for supplying clean water from an external water source to clean solid contaminants adhering to the surface of the multiple filtration layers after sampling; and a vent pipe is installed on the sampling tube for sending compressed air through the sampling tube into the filtration device. The solution of this disclosure can solve the problem of filter clogging when sampling wastewater containing a large amount of solid particles due to unreasonable filter design. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the exemplary embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the wastewater detection sampling gun of this utility model;

[0023] Figure 2 This is a front view of the wastewater detection sampling gun of this utility model;

[0024] Figure 3 This is a half-sectional view of the structure of this utility model, excluding the telescopic rod structure.

[0025] In the diagram: 1. Sampling tube; 2. Telescopic rod structure; 3. Detachable filter device; 4. Agitator; 5. Anti-backflow valve; 6. Multi-stage filter layer; 7. Water spray pipe; 8. Reverse flow blades; 9. Sewage discharge pipe; 10. Ultrasonic vibration unit; 11. Quick-release latch; 12. Water flow pre-diversion plate. Detailed Implementation

[0026] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0027] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0028] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0029] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this disclosure. The drawings only show the components related to this disclosure and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0030] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0031] like Figure 1 and Figure 2 As shown, a wastewater testing sampling gun of this application includes a sampling tube 1, a telescopic rod structure 2, a detachable filter device 3, a stirrer 4, and an anti-backflow valve 5.

[0032] Sampling tube 1 is used to store wastewater samples. Its design requires sufficient corrosion resistance and pressure resistance to ensure normal operation even in harsh environments. Telescopic rod structure 2 is connected to sampling tube 1 and can be freely adjusted according to the required sampling depth, allowing for flexible operation by extending or shortening it. For example, telescopic rod structure 2 can be connected to sampling tube 1 via a piston structure to guide wastewater into sampling tube 1.

[0033] The detachable filter device 3 is located at the inlet of one end of the sampling tube 1. This device consists of multiple filter layers 6, arranged from coarse to fine along the direction of wastewater flow. This ensures that large solid particles are gradually removed from the wastewater entering the sampling tube 1, thus preventing clogging. Each filter layer can be independently disassembled and cleaned, effectively improving the equipment's lifespan and efficiency.

[0034] A stirrer 4 is placed inside the sampling tube 1 and is driven by an external power source. Its main function is to agitate the wastewater during extraction, ensuring better sample representativeness. The stirrer 4 is designed to balance agitation intensity and uniformity, and can be started and stopped as needed during sampling via an external control unit. This not only improves the solid-liquid mixing effect but also reduces power consumption, enhancing the economy and practicality of sampling.

[0035] The anti-backflow valve 5 is installed at the end of the sampling tube 1 closest to the user. Its design purpose is to prevent wastewater from flowing back into the sampling gun when suction stops, thus preventing sample contamination and machine damage. The anti-backflow valve 5 typically employs a one-way valve structure, automatically closing when water flow ceases to ensure system cleanliness and safety.

[0036] Specifically, sampling tube 1 can be made of highly corrosion-resistant stainless steel to ensure stable operation in complex wastewater environments. The telescopic rod structure 2 can be length-adjusted via a built-in telescopic slide rail and locking device. The slide rail surface is treated to reduce frictional resistance, and the locking device is simple, reliable, and easy to operate.

[0037] The detachable filter device 3 features multi-stage filter layers 6 that can utilize filter screens of different pore sizes. The filter screen material can be selected from corrosion-resistant materials such as stainless steel and nylon, depending on the requirements. Each filter screen layer is equipped with a seal to ensure step-by-step filtration of water. The filter device's inlet and outlet are equipped with quick-connect fittings for easy and rapid installation and removal, facilitating maintenance.

[0038] The agitator 4 is driven by a motor, which is connected to the sampling gun body via a waterproof sealing joint. The agitator 4 blades feature a spiral design, generating effective vortices during sampling to promote uniform mixing of the wastewater. The control unit has one-button start and timed stop functions, allowing users to adjust the mixing time according to their needs.

[0039] The backflow prevention valve 5 can be a one-way valve structure made of silicone material. An internal spring ensures that it automatically opens when water flows through and closes when water flow stops. The one-way valve is installed inside the sampling tube 1, near the operator, and secured with fasteners. Installation is simple, and the valve provides a good seal, ensuring reliable backflow prevention.

[0040] In one embodiment, see Figure 3 The multi-stage filtration layer 6 in the wastewater testing sampling gun of this application includes at least three filtration components, each with a different preset maximum filtration pore size. The specific configuration of this multi-stage filtration layer 6 is designed to effectively avoid the clogging problem that easily occurs when processing high-density solids in a single-pore size design. Specifically, the first-stage filtration layer, i.e., the coarse filtration layer, is designed with the largest filtration pore size, 3 mm; the second-stage filtration layer, i.e., the secondary filtration layer, has a smaller filtration pore size, 2 mm; and the third-stage filtration layer, as the finest stage, further reduces the pore size to 1 mm. This step-by-step filtration design not only effectively filters solid particles of different sizes but also gradually reduces the filter element load, extending the service life of the entire filtration system.

[0041] In one embodiment, a wastewater sampling gun of this application has a water spray pipe 7 located inside the sampling tube 1 at a position corresponding to the multi-stage filter layer 6 (see...). Figure 2This design aims to improve equipment maintenance and prevent frequent clogging during sampling by supplying clean water from an external source to flush away large particulate solid contaminants adhering to the surface of the multi-stage filter layers 6. The sampling tube 1 is a key component of the entire sampling gun, containing multiple layers of filter material for initial purification of large particulate impurities in the wastewater. Opposite these filter layers, the spray pipe 7 is precisely positioned to ensure that the clean water it sprays effectively covers and flushes the surface of each filter layer.

[0042] Specifically, the water spray pipe 7 is arranged axially along the sampling pipe 1 and parallel to the multi-stage filter layer 6. Several small spray holes are distributed on the water spray pipe 7, evenly distributed around the pipe to ensure that the sprayed clean water fully covers each filter layer. More specifically, spray holes can be located between the multi-stage filter layers 6. After sampling is completed, by connecting to an external clean water source and turning on the water spray pipe 7, high-pressure clean water is sprayed onto the surface of the multi-stage filter layer 6, thereby removing any large particulate solid contaminants that may be attached. For example, the design of the spray holes using a spiral distribution can increase the contact time and range between the clean water and the filter layer surface, further improving the cleaning effect. This design not only simplifies maintenance but also significantly improves the reliability and service life of the equipment.

[0043] In one embodiment, such as Figure 3 As shown, a wastewater sampling gun of this application includes a unique stirrer 4 design. The stirrer 4 has reverse-flow blades 8 on its rotating part, which generate a reverse water flow during stirring, thereby preventing impurities from adhering to the filter screen and causing blockage during sampling. This design not only effectively improves sampling efficiency and sample quality but also plays an important role in wastewater environments with high concentrations of suspended solids and large particulate matter.

[0044] Specifically, the reverse thrust blade 8 is installed on the rotating part of the agitator 4 and is coaxially arranged with the main rotating shaft of the agitator 4. In one specific embodiment, the reverse thrust blade 8 is a reverse blade located at the end of the helical shaft, and the helical direction of the reverse blade is opposite to that of the helical blade. This structure allows the wastewater to be subjected to both the thrust of the helical blade and the reverse extrusion force of the reverse blade.

[0045] In one embodiment, such as Figure 2As shown, a wastewater sampling gun of this application has a vent pipe 9 installed on its sampling tube 1. To prevent residual wastewater and sediment in the sampling tube 1 from clogging the filter during repeated use, the sampling gun is equipped with the vent pipe 9. The vent pipe 9 is installed close to the outlet end of the sampling tube 1 and communicates with the interior of the sampling tube 1. The function of the vent pipe 9 is to automatically activate after each sampling, briefly supplying compressed air to remove residual wastewater and sediment from the sampling tube 1, thereby ensuring unobstructed flow in the pipeline.

[0046] The design of the exhaust pipe 9 aims to reduce the accumulation of sediment inside the pipe and avoid blockage problems caused by long-term use. Specifically, one end of the exhaust pipe 9 is connected to an external compressed air source, and the other end extends into the sampling pipe 1 to ensure that the compressed air can directly act on the sewage and sediment inside the sampling pipe 1. This design allows for the effective removal of residues inside the pipe after each sampling by a brief high-pressure air flush, ensuring the continuity and efficiency of the sampling process.

[0047] In practice, for example, a solenoid valve can be used to control the opening and closing of the exhaust pipe 9. After each sampling is completed, the control system triggers the solenoid valve to open, allowing external compressed air to enter the sampling tube 1 through the exhaust pipe 9. This compressed air flushing for several seconds ensures that sewage and sediment are thoroughly removed from the tube, thereby reducing the probability of the filter becoming clogged due to sediment accumulation.

[0048] In one embodiment, a wastewater sampling gun of this application has an ultrasonic vibration unit 10 on the outer surface of its multi-stage filtration device. During operation, internal sensors monitor the filtration resistance of the multi-stage filtration device in real time. Once an increase in filtration resistance is detected and exceeds a preset threshold, the system automatically activates the ultrasonic vibration unit 10. The ultrasonic vibration unit 10 generates strong mechanical force through high-frequency vibration, effectively breaking down and loosening large particles adhering to the mesh surface of the multi-stage filtration device. This prevents mesh clogging caused by prolonged continuous sampling, ensuring stable operation and continuous working efficiency of the sampling gun.

[0049] To achieve this function, the ultrasonic oscillation unit 10 is mounted on the outer surface of the multi-stage filtration device, working closely with the sensor to form an automated control system. When the sensor detects that the filtration resistance exceeds a set value, the controller triggers the ultrasonic oscillation unit 10 to start. The ultrasonic oscillation unit 10 includes a transducer and a housing. The transducer is fixed inside the housing and connected to the controller via wires. The housing is securely fixed to the outer wall of the multi-stage filtration device, ensuring structural stability and reliability during high-frequency vibration. In this way, the ultrasonic oscillation unit 10 can efficiently perform cleaning without affecting the overall performance of the sampling gun, ensuring the continuity and stability of the filtration effect.

[0050] In one embodiment, a wastewater testing sampling gun of this application includes a multi-stage filter layer 6, which are connected by a quick-release latch 11 (see [link to application]). Figure 3 The filters are interconnected. Specifically, each filter layer can be easily separated and reassembled without the use of any tools. This design allows operators to quickly and easily disassemble and assemble the equipment when cleaning or inspecting the filter layers, effectively reducing clogging problems caused by infrequent cleaning due to difficulty in disassembly. The quick-release latch 11 not only improves the ease of cleaning but also enhances the reliability and durability of the equipment, further extending its service life.

[0051] Specifically, the quick-release latch 11 is located at the joint of each filter layer, and can lock or release adjacent filter layers with a simple rotation or pressing action. For example, the operator can quickly separate two filter layers by simply rotating the latch for necessary cleaning or replacement. This design not only simplifies the operation process but also ensures stable operation of the equipment in high-frequency use scenarios. Furthermore, by optimizing the position and structure of the quick-release latch 11, efficient and reliable operation is guaranteed even in harsh working environments.

[0052] join Figure 3 In one embodiment, a wastewater sampling gun according to this application includes a pre-diverting disc 12 located before a multi-stage filtration device. This pre-diverting disc 12 is used for initial distribution and slowing down the water flow rate, aiming to reduce the intensity of the water flow entering the multi-stage filtration device. The pre-diverting disc 12 is installed between the sampling gun's inlet and the multi-stage filtration device, ensuring that the water has undergone pre-dispersion treatment before entering the filtration device. This design helps to mitigate the clogging process of the mesh in the multi-stage filtration device and significantly reduces the risk of frequent clogging.

[0053] Specifically, the water pre-diversion plate 12 consists of multiple radially distributed small holes or channels. These holes or channels can be evenly distributed across the entire plate surface, dispersing and slowing down the water flow entering the sampling gun. In this way, the water flow is initially broken down into multiple smaller water flows, reducing the pressure on the filter screen and extending the service life of the filtration device. For example, the water pre-diversion plate 12 can adopt a circular plate structure with multiple small holes of different diameters on its surface. Furthermore, the water pre-diversion plate 12 can be fixed to the inlet of the sampling gun by means of threads or clips, ensuring stability and reliability during long-term use.

[0054] In actual operation, when using this device, the user first installs the detachable filter device 3 at the inlet of one end of the sampling tube 1. This filter device has multiple levels of filter layers, arranged from coarse to fine, effectively filtering out large particles in the wastewater. It can also adapt to different wastewater environments by adjusting the filter pore size, avoiding sampling difficulties caused by large particles clogging the wastewater. Next, the user uses the telescopic rod structure 2 to allow the wastewater to enter the sampling tube 1. Then, the stirrer 4, located inside the sampling tube 1, is activated by an external power source. It effectively agitates the wastewater, making the solid particles and liquid mix more evenly, thereby improving the representativeness and accuracy of the sample. Throughout the sampling process, the user can flexibly control the start and stop of the stirrer 4 according to specific circumstances to balance the agitation effect and power consumption. After sampling is complete, the wastewater is introduced into a container through the sampling tube 1, while the backflow prevention valve 5 automatically closes at the end of sampling to prevent wastewater from flowing back into the sampling gun after suction stops, ensuring the cleanliness of the sample and equipment. This design not only ensures the quality and efficiency of sampling, but also greatly improves the convenience and safety of operation.

[0055] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of the embodiments of this disclosure. It should be understood that the above descriptions are merely specific embodiments of the embodiments of this disclosure and are not intended to limit the scope of protection of the embodiments of this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this disclosure should be included within the scope of protection of the embodiments of this disclosure.

Claims

1. A sewage detection sampling gun, characterized in that, Comprising: a sampling tube (1) for storing sewage sample; a telescopic rod structure (2) connected with the sampling tube (1) and capable of being extended or shortened to guide sewage into the sampling tube (1); a filtering device (3) located at the inlet of one end of the sampling tube (1) and provided with multi-stage filtering layers (6) arranged from coarse to fine along the direction of sewage flow; a stirrer (4) placed inside the sampling tube (1) for stirring the sewage sample; and a backflow prevention valve (5) installed at the end of the sampling tube (1) close to the user to prevent sewage from flowing back when suction is stopped; wherein a water jet pipe (7) is provided inside the sampling tube (1) at a position corresponding to the multi-stage filtering layers (6) for washing solid pollutants adhered to the surface of the multi-stage filtering layers (6) by supplying clean water from an external source after sampling operation; and a sewage discharge air pipe (9) is installed on the sampling tube (1) for sending compressed air into the filtering device (3) through the sampling tube. The multi-stage filtering layers (6) include at least three filtering components with different preset maximum filtering pore diameters, wherein the maximum filtering pore diameter of the coarse filtering layer is 3mm, the maximum filtering pore diameter of the secondary filtering layer is 2mm, and the maximum filtering pore diameter of the finest filtering layer is 1mm.

2. The sewage detecting sampling gun according to claim 1, characterized in that: The water jet pipe (7) is arranged along the axial direction of the sampling tube (1) and provided with water jet holes at positions between the multi-stage filtering layers (6).

3. The sewage detecting sampling gun according to claim 1, characterized in that: The stirrer (4) is provided with reverse push flow blades (8) at the rotating part thereof for generating reverse water flow while stirring.

4. The sewage detecting sampling gun according to claim 1, characterized in that: The reverse push flow blades (8) are reverse blades provided at the end of a helical shaft, and the helical direction of the reverse blades is opposite to that of the helical blades.

5. The sewage detecting sampling gun according to claim 4, characterized in that: An ultrasonic oscillation unit (10) is provided on the outer surface of the multi-stage filtering layers.

6. The sewage detecting sampling gun according to claim 1, characterized in that: The multi-stage filtering layers are connected with each other through quick release locks (11).

7. The sewage detecting sampling gun according to claim 1, characterized in that: A water flow pre-shunt disc (12) is further provided in front of the multi-stage filtering device for preliminary distribution and slowing down of water flow rate.

8. The sewage detecting sampling gun according to claim 1, characterized in that: The water flow pre-shunt disc (12) is a circular disc structure, and a plurality of small holes with different diameters are provided on the disc surface.

9. The sewage detecting sampling gun according to claim 8, characterized in that: ​

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