Sewage sampling device with anti-corrosion ball valve

Abstract

The invention relates to the technical field of sewage sampling, and discloses a sewage sampling device with an anti-corrosion ball valve.The sewage sampling device comprises a ball valve body, ball valve channels are formed in the two sides of the ball valve body, mounting bins are arranged at the upper ends of the ball valve channels, and telescopic assemblies are arranged in the mounting bins; a sampling and cleaning assembly is arranged on one side of the telescopic assembly, and a gland assembly is installed on one side of the sampling and cleaning assembly. According to the sewage sampling device with the anti-corrosion ball valve, a multi-stage lifting function is realized through the telescopic assembly, so that a sampler flexibly samples at different height positions, the situation that the sampling position is inaccurate due to insufficient height is avoided, it is ensured that representative samples are collected, and the sampling precision is improved; the lifting position of the sampler can be accurately controlled by cooperating with a moving block, a cross rod, a gear rack and other parts for cooperative operation, and the sampler can be accurately positioned to a specific depth layer for sampling according to the sewage layering phenomenon.

Description

Technical Field

[0001] This invention relates to the field of wastewater sampling technology, specifically to a wastewater sampling device with an anti-corrosion ball valve. Background Technology

[0002] Wastewater sampling refers to the process of collecting representative wastewater samples from wastewater discharge sources, treatment facilities, or receiving water bodies for water quality analysis, monitoring pollutant concentrations, evaluating water treatment effectiveness, or determining whether discharge standards are met. It is an important part of environmental monitoring, wastewater treatment management, and water quality research, and its scientific validity and accuracy directly affect the reliability of subsequent data analysis and decision-making.

[0003] In fields such as wastewater treatment and environmental monitoring, wastewater sampling is a crucial step in obtaining wastewater samples for water quality analysis. Therefore, it is necessary to design a wastewater sampling device with a corrosion-resistant ball valve to facilitate wastewater sampling operations.

[0004] The prior art, CN114166579B, discloses a wastewater sampling device, including a sampler and a sample container. The sample container is slidably inserted into the sampler. The sampler includes a fixedly connected outer cylinder and a mounting rod. An end cap is screwed onto the outer cylinder, and a rubber block is installed on the end cap. A pleated hose is fixedly connected to the outer cylinder, and a top cover is installed on the pleated hose. The sample container includes an inner cylinder, a piston, and a pull rod. A needle is provided on the inner cylinder, and a hanging ring is provided on the pull rod. A connecting rod is installed on the top cover, and a top ring is installed on the connecting rod. A first traction rod is connected to the top cover, and a second traction rod is slidably installed on the top cover. The second traction rod includes a base rod and a top rod. An installation hole is opened on the base rod, and the top rod passes through the installation hole. An installation groove communicating with the installation hole is opened on the base rod, and a hook is hinged in the installation groove. This device is used to solve the problem that when the current wastewater sampling device is removed from the water, other impurities in the upper water level of the sampling location may be mixed in, contaminating the sample and affecting the test results.

[0005] The aforementioned prior art, although the outer cylinder is sealed by end caps, top caps, and pleated tubing, and the sample container is placed inside the outer cylinder to isolate it from sewage and prevent sewage from adhering to the surface of the sample container, thus keeping the surface of the sample container relatively clean after sampling, and during sampling, the outer cylinder is moved by the first traction rod, top cap, connecting rod, and top ring to expose the needle tube through the rubber block to the outside of the outer cylinder, and then the piston is pulled to draw sewage samples. After collecting the samples, the inner cylinder is pulled back to allow the needle tube to re-enter the outer cylinder, and the outer wall of the needle tube is cleaned by the rubber block to prevent sewage from entering the outer cylinder. After sampling, the sample container is sealed again to avoid contamination of the sample by other substances when the sampling device is taken out of the sewage, but it does not have the capability for multi-stage lifting and lowering of the sampler, cannot achieve flexible sampling at different heights, and insufficient sampling height can easily lead to inaccurate sampling positions, making it impossible to ensure the collection of representative samples.

[0006] Therefore, a wastewater sampling device with a corrosion-resistant ball valve is needed to solve the problem mentioned in the background art of not being able to flexibly sample at different heights. Summary of the Invention

[0007] The purpose of this invention is to provide a wastewater sampling device with a corrosion-resistant ball valve to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sewage sampling device with a corrosion-resistant ball valve, including a ball valve body, ball valve channels are provided on both sides of the ball valve body, an installation chamber is provided at the upper end of the ball valve channel, and a telescopic component is provided inside the installation chamber, a sampling and cleaning component is provided on one side of the telescopic component, and a pressure cap component is installed on one side of the sampling and cleaning component. The telescopic assembly includes a first motor, and the output end of the first motor is provided with a lead screw. A movable block is sleeved on the outside of the lead screw, and crossbars are provided on both sides of the movable block. A first movable frame is provided on the outside of the crossbars, and a vertical groove is opened on the first movable frame. A first gear is installed in the vertical groove, and a first rack is installed on one side of the first gear. A second rack is provided on the side of the first gear away from the first rack, and a fixed frame is provided on one side of the second rack. A second movable frame is installed on one side of the first rack, and a sliding plate is provided at the lower end of the second movable frame. The capping assembly includes a fixed platform, with a bracket at the upper end of the fixed platform. A second motor is mounted on one side of the bracket, and a second gear is mounted on the output end of the second motor. A third rack is mounted on the lower end of the second gear. A movable plate is mounted on the lower end of the third rack, and connecting rods are mounted on both sides of the movable plate. A pulley is mounted on one side of the connecting rod. An L-shaped groove is provided on the fixed platform at the corresponding position of the pulley. An installation rod is provided on the other side of the connecting rod, and a cover plate is mounted on one side of the installation rod. A first sealing gasket is provided at the lower end of the cover plate. A sampling through hole is provided on the ball valve channel.

[0009] Preferably, the ball valve body has a ball valve plate inside, and the inner and outer walls of the ball valve body and the ball valve plate are provided with corrosion-resistant layers, and a detachable filter assembly is installed on one side of the ball valve channel.

[0010] Preferably, the first motor is detachably mounted on the upper end of the mounting chamber, the output end of the first motor is detachably connected to the lead screw, the moving block is matched with the lead screw, and the moving block is connected to the first moving frame through a crossbar.

[0011] Preferably, there are two sets of vertical grooves, which are symmetrically arranged on the first moving frame. The first gear rotates in the vertical groove, the first rack is fixedly installed on the second moving frame, the second rack is fixedly installed on the fixed frame, and the slide plate slides in the installation chamber.

[0012] Preferably, the fixed platform is fixedly installed inside the installation chamber, the bracket is fixedly installed at the upper end of the fixed platform, the second gear meshes with the third rack, and the third rack is slidably installed on the fixed platform.

[0013] Preferably, there are two sets of connecting rods, one end of each set of connecting rods is rotatably connected to a movable plate, and the other end of the connecting rods is rotatably connected to a pulley. The pulley is slidably disposed in a groove. The first sealing gasket is an annular structure, and the cover plate matches the sampling through hole.

[0014] Preferably, the sampling and cleaning assembly includes a cleaning liquid tank, the upper end of which is connected to a replenishment pipe, a pressure pump is connected to one side of the cleaning liquid tank, a three-way valve is provided on one side of the pressure pump, and a telescopic pipe is connected to the lower end of the three-way valve, with a sampler provided at the lower end of the telescopic pipe.

[0015] Preferably, the sampler passes through the installation chamber and extends into the ball valve channel, the slide plate is detachably connected to the sampler, the cleaning liquid tank is fixedly installed at the upper end of the installation chamber, and one end of the three-way valve is connected to an aspiration detection device.

[0016] Preferably, the detachable filter assembly includes a handle, the lower end of which is connected to a mounting arc plate, and the mounting arc plate has a placement groove inside. A spring is installed inside the placement groove, and a slider is installed at the lower end of the spring. A vertical rod is installed at the lower end of the slider, and a second sealing gasket is installed at the lower end of the vertical rod. Fixed arc plates are provided on both sides of the mounting arc plate, and the fixed arc plates are detachably connected to the ball valve channel by bolts. A filter plate matching the ball valve channel is provided at the middle position of the mounting arc plate.

[0017] Preferably, the slider is slidably disposed in the placement groove, the vertical rod passes through the placement groove and extends into the mounting groove for placing the second sealing gasket, and the second sealing gasket has a U-shaped structure, and the ball valve channel has a groove that matches the filter plate.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: First, this invention achieves multi-level lifting function through the designed telescopic component, enabling the sampler to flexibly sample at different heights. This avoids inaccurate sampling positions due to insufficient height, ensuring the collection of representative samples and improving sampling accuracy. The first motor drives the lead screw to rotate, working in conjunction with the moving block, crossbar, gear rack, and other components to achieve precise control of the sampler's lifting position. Based on the stratification of sewage, it can accurately locate specific depth layers for sampling, obtaining samples of sewage at different depths. This provides more comprehensive and detailed data for water quality analysis, improving the accuracy and reliability of water quality testing results and enhancing operational convenience.

[0019] Secondly, the invention, through the capping assembly, ensures that the cover plate of the capping assembly can completely cover the sampling through hole when no sampling operation is being performed. This effectively isolates dust, impurities, microorganisms and other pollutants from the external environment from entering the device, preventing the sample from being contaminated during storage or waiting for transfer, ensuring the originality and authenticity of the sample, and providing a reliable sample basis for subsequent water quality analysis.

[0020] Third, the present invention, through the design of a detachable filter assembly, makes the disassembly and installation of the filter plate simple and convenient. When the filter plate intercepts a large amount of solid impurities in the sewage and causes blockage, the operator can easily remove the filter plate from the device by using the handle, bolts and other parts. No complicated tools and cumbersome operating procedures are required, which greatly reduces the maintenance difficulty and maintenance time cost of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the telescopic component of the present invention; Figure 4 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 5 This is a schematic diagram of the structure of the capping assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the moving plate and connecting rod of the present invention; Figure 7 For the present invention Figure 2 Enlarged view of the structure at point B in the middle.

[0022] The components include: 1. Ball valve body; 2. Ball valve passage; 3. Ball valve plate; 4. Corrosion-resistant layer; 5. Installation chamber; 6. Telescopic assembly; 601. First motor; 602. Lead screw; 603. Moving block; 604. Crossbar; 605. First moving frame; 606. Vertical groove; 607. First gear; 608. First rack; 609. Second rack; 610. Fixed frame; 611. Second moving frame; 612. Slide plate; 7. Sampling and cleaning assembly; 701. Cleaning liquid tank; 702. Replenishment pipeline; 703. Pressure pump; 704. Three-way valve; 705. Telescopic pipe; 706. Sampling... 8. Pressure cap assembly; 801. Fixed platform; 802. Bracket; 803. Second motor; 804. Second gear; 805. Third rack; 806. Moving plate; 807. Connecting rod; 808. Pulley; 809. Slide groove; 810. Mounting rod; 811. Cover plate; 812. First sealing gasket; 813. Sampling through hole; 9. Detachable filter assembly; 901. Handle; 902. Mounting arc plate; 903. Placement groove; 904. Spring; 905. Slider; 906. Vertical rod; 907. Second sealing gasket; 908. Fixed arc plate; 909. Bolt; 910. Filter plate. Detailed Implementation

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

[0024] Please see Figures 1-3 A wastewater sampling device with a corrosion-resistant ball valve includes a ball valve body 1, ball valve channels 2 on both sides of the ball valve body 1, an installation chamber 5 at the upper end of the ball valve channel 2, and a telescopic assembly 6 inside the installation chamber 5. A sampling and cleaning assembly 7 is provided on one side of the telescopic assembly 6. The telescopic assembly 6 includes a first motor 601, and a lead screw 602 is provided at the output end of the first motor 601. A moving block 603 is sleeved on the outside of the lead screw 602, and crossbars 604 are provided on both sides of the moving block 603. A first movable frame 605 is provided on the outer side of 604, and a vertical groove 606 is provided on the first movable frame 605. A first gear 607 is installed in the vertical groove 606, and a first rack 608 is installed on one side of the first gear 607. A second rack 609 is provided on the side of the first gear 607 away from the first rack 608, and a fixed frame 610 is provided on one side of the second rack 609. A second movable frame 611 is installed on one side of the first rack 608, and a sliding plate 612 is provided at the lower end of the second movable frame 611.

[0025] In this embodiment, a sewage flow path is formed by the ball valve body 1 and the ball valve channels 2 on both sides. The telescopic component 6 in the upper installation chamber 5 is driven by the first motor 601 to drive the lead screw 602 to move the moving block 603 up and down. The first moving frame 605 is linked by the crossbar 604. The vertical motion is converted into the horizontal movement of the second moving frame 611 by the meshing transmission of the first gear 607, the first rack 608, and the second rack 609 in the vertical groove 606. Thus, the extension and positioning of the sampling and cleaning component 7 are precisely controlled by the slide plate 612 to realize the automated collection of sewage samples and pipeline cleaning. At the same time, combined with the structural design of corrosion-resistant layer and sealing gasket, the device is guaranteed to operate stably in a highly corrosive environment and has the advantages of leak prevention, easy maintenance and accurate sampling.

[0026] Specifically, the first motor 601 is detachably mounted on the upper end of the mounting chamber 5, the output end of the first motor 601 is detachably connected to the lead screw 602, the moving block 603 is matched with the lead screw 602, and the moving block 603 is connected to the first moving frame 605 through the crossbar 604.

[0027] In this embodiment, the first motor 601 is externally powered and controlled by a controller to ensure the independent operation of each device. The first motor 601 is detachably mounted on the upper end of the installation chamber 5, and its output end is detachably connected to the lead screw 602. This design facilitates quick disassembly and maintenance of the motor. When the motor malfunctions or needs repair, it is not necessary to disassemble the entire telescopic assembly, which significantly reduces maintenance costs and time. It ensures that the moving block 603 can stably rise and fall along the axial direction when the lead screw 602 rotates, providing reliable power transmission to the crossbar 604 and the first moving frame 605. The moving block 603 is connected to the first moving frame 605 through the crossbar 604, so that the vertical movement of the moving block is synchronously transmitted to the first moving frame 605, thereby driving the gear and rack mechanism in the vertical groove 606 to move, realizing multi-stage vertical movement. Finally, the position of the sampling and cleaning component 7 is precisely controlled by the second moving frame 611 and the slide plate 612, ensuring the stability and accuracy of the sampling and cleaning operation.

[0028] Specifically, there are two sets of vertical grooves 606, which are symmetrically arranged on the first moving frame 605. The first gear 607 is rotatably arranged in the vertical groove 606. The first rack 608 is fixedly installed on the second moving frame 611, the second rack 609 is fixedly installed on the fixed frame 610, and the slide plate 612 is slidably arranged in the mounting chamber 5.

[0029] In this embodiment, two sets of symmetrically arranged vertical slots 606 provide a stable rotational guide space for the first gear 607. The symmetrical layout balances the lateral force during gear and rack transmission, preventing the first moving frame 605 from tilting or jamming due to uneven force. The first gear 607 meshes simultaneously with the first rack 608 fixed to the second moving frame 611 and the second rack 609 fixed to the fixed frame 610, utilizing the "fixed rack (second rack 609) - moving gear (first gear 607) - moving rack (first rack 608)" configuration. The transmission structure converts the vertical movement of the first moving frame 605 into the vertical movement of the second moving frame 611, enabling the slide plate 612 to move smoothly within the installation chamber 5. This allows for precise control of the lateral extension or retraction of the sampling and cleaning component 7, ensuring that the sampler 706 can be vertically aligned with the sampling through-hole 813 of the ball valve channel 2. This improves the accuracy of the sampling position and operational stability. At the same time, the symmetrical design enhances the strength and reliability of the mechanical structure. A sealing gasket is provided at the contact point between the sampling through-hole 813 and the sampler 706 to ensure the sealing of the sampler 706 when sampling in the sampling through-hole 813.

[0030] Specifically, the sampling and cleaning component 7 includes a cleaning liquid tank 701, with a replenishment pipe 702 connected to the upper end of the cleaning liquid tank 701, a pressure pump 703 connected to one side of the cleaning liquid tank 701, a three-way valve 704 provided on one side of the pressure pump 703, and a telescopic pipe 705 connected to the lower end of the three-way valve 704, with a sampler 706 provided at the lower end of the telescopic pipe 705.

[0031] In this embodiment, the sampling and cleaning assembly 7 integrates components such as a cleaning liquid tank 701, a pressurizing pump 703, a three-way valve 704, and a telescopic pipe 705 to achieve an integrated "sampling-cleaning" function. The cleaning liquid tank 701 stores cleaning liquid, which can be replenished at any time through the replenishment pipe 702 to ensure continuous operation. The pressurizing pump 703 provides power. When the three-way valve 704 is switched to cleaning mode, the cleaning liquid can be pressurized and sprayed out through the telescopic pipe 705 to rinse the sampler 706, avoiding sewage residue corrosion or sample cross-contamination. When switched to sampling mode, the pressurizing pump can drive the sampler 706 to draw sewage samples through the telescopic pipe 705. The telescopic pipe 705 rises and falls with the sampler to adapt to different sampling depth requirements. At the same time, the switching design of the three-way valve 704 realizes the function reuse of the same pipeline, simplifies the structure, and improves the operating efficiency, ensuring that the device can accurately sample and automatically complete cleaning and maintenance in complex sewage environments, thereby improving the reliability of test results and the service life of the device.

[0032] Specifically, the sampler 706 passes through the installation chamber 5 and extends into the ball valve channel 2. The slide plate 612 is detachably connected to the sampler 706. The cleaning liquid chamber 701 is fixedly installed at the upper end of the installation chamber 5. One end of the three-way valve 704 is connected to the suction and detection device.

[0033] In this embodiment, the sampler 706 is designed to penetrate the installation chamber 5 and extend to the ball valve channel 2, allowing it to directly enter the sewage flow path to complete sample collection, ensuring the authenticity and representativeness of the sample. The detachable connection between the slide plate 612 and the sampler 706 facilitates quick replacement or maintenance of the sampler, adapting to different testing needs and improving the flexibility of the device. The cleaning liquid tank 701 is fixed to the upper end of the installation chamber 5, using gravity to assist the cleaning liquid to flow into the pressurization pump 703, while saving installation space and making the structural layout more compact. One end of the three-way valve 704 is connected to the suction and testing equipment. By switching the valve passage, sewage samples can be directly transported to the testing equipment in the "sampling mode," avoiding contamination or errors caused by manual sample transfer. At the same time, in the "cleaning mode," the testing equipment is isolated to prevent the cleaning liquid from interfering with the testing. This design, through integrated pipeline control, realizes the automated connection of the sampling, cleaning, and testing processes, improving operational efficiency and the accuracy of test results.

[0034] Please see Figures 4-6 A wastewater sampling device with a corrosion-resistant ball valve is provided. A pressure cap assembly 8 is installed on one side of the sampling and cleaning component 7. The pressure cap assembly 8 includes a fixed platform 801, and a bracket 802 is provided at the upper end of the fixed platform 801. A second motor 803 is provided on one side of the bracket 802. A second gear 804 is provided at the output end of the second motor 803. A third rack 805 is provided at the lower end of the second gear 804. A movable plate 806 is installed at the lower end of the third rack 805. A connecting rod 807 is provided on both sides of the movable plate 806. A pulley 808 is provided on one side of the connecting rod 807. An L-shaped groove 809 is provided on the fixed platform 801 at the corresponding position of the pulley 808. An installation rod 810 is provided on the other side of the connecting rod 807. A cover plate 811 is installed on one side of the installation rod 810. A first sealing gasket 812 is provided at the lower end of the cover plate 811. A sampling through hole 813 is provided on the ball valve channel 2.

[0035] In this embodiment, the cap assembly 8 is driven by the second motor 803 to rotate the second gear 804, which in turn drives the third rack 805 to move, thereby causing the moving plate 806 to move synchronously. The connecting rods 807 on both sides of the moving plate cooperate with the pulleys 808 and the L-shaped sliding grooves 809 to transform the cover plate 811 into a "horizontal approach - vertical downward press" compound motion, ensuring that the cover plate can accurately align with the sampling through hole 813 on the ball valve channel 2. The first sealing gasket 812 at the lower end of the cover plate fits tightly with the sampling through hole 813 when the cover plate is pressed down, forming a sealing structure to prevent sewage leakage or external impurities from entering when the sewage is not being sampled. At the same time, the sampling through hole is sealed after sampling to prevent residual sewage from evaporating or polluting the environment. The entire assembly realizes the automatic opening, closing and sealing of the sampling through hole, improving the safety, sealing performance and operating efficiency of the device, effectively reducing manual intervention and adapting to complex and harsh sewage sampling environments.

[0036] Specifically, the fixed platform 801 is fixedly installed inside the installation chamber 5, the bracket 802 is fixedly installed on the upper end of the fixed platform 801, the second gear 804 meshes with the third rack 805, and the third rack 805 is slidably installed on the fixed platform 801.

[0037] In this embodiment, the fixed platform 801 is fixed inside the installation chamber 5 to provide a stable support foundation for the pressure cap assembly 8, ensuring that the entire assembly remains stable during operation and preventing structural displacement due to vibration or external force. The bracket 802 is fixed to the upper end of the fixed platform 801, providing an installation platform for the second motor 803 and the second gear 804, ensuring reliable installation of the power transmission components. The meshing design of the second gear 804 and the third rack 805 converts the rotational motion of the motor into linear motion. Through the high-precision characteristics of the gear and rack transmission, precise control of the displacement of the third rack 805 is achieved. The third rack 805 is slidably set on the fixed platform 801. On the one hand, the limiting structure of the fixed platform 801 constrains the movement trajectory of the third rack 805, preventing it from shaking or deviating during movement. On the other hand, it ensures that the third rack 805 can stably drive the moving plate 806 and subsequent connecting rods 807, cover plate 811 and other components to move, thereby achieving precise sealing and opening of the sampling through hole 813 by the cover plate 811, ensuring the stability and sealing of the sewage sampling device.

[0038] Specifically, there are two sets of connecting rods 807. One end of each set of connecting rods 807 is rotatably connected to the moving plate 806, and the other end of the connecting rods 807 is rotatably connected to the pulley 808. The pulley 808 is slidably set in the sliding groove 809. The first sealing gasket 812 is an annular structure, and the cover plate 811 matches the sampling through hole 813.

[0039] In this embodiment, two sets of connecting rods 807, a movable plate 806, and a pulley 808 form a linkage mechanism. The third rack 805 drives the vertical movement of the movable plate 806. Through the sliding cooperation of the connecting rods 807 and the pulley 808 in the sliding groove 809, the movement is cleverly transformed into a composite movement of the cover plate 811 "horizontally approaching the sampling through hole - vertically pressing and sealing". This ensures that the cover plate can be accurately aligned. The sliding design of the pulley 808 in the sliding groove 809 reduces the movement resistance and improves the stability and guiding accuracy of the cover plate 811 movement. The annular first sealing gasket 812 is installed at the lower end of the cover plate 811 and fits tightly with the sampling through hole 813 to form an all-round sealing barrier, effectively preventing sewage leakage and the intrusion of external impurities, and ensuring a clean sampling environment. The matching structure between the cover plate and the sampling through hole further ensures the sealing effect, so that the device can maintain reliable sealing in different states such as sampling and idle, and improve the accuracy and safety of sewage sampling.

[0040] Please see Figure 7 A wastewater sampling device with a corrosion-resistant ball valve is disclosed. The ball valve body 1 has a ball valve plate 3 inside, and the inner and outer walls of the ball valve body 1 and the ball valve plate 3 are provided with a corrosion-resistant layer 4. A detachable filter assembly 9 is installed on one side of the ball valve channel 2. The detachable filter assembly 9 includes a handle 901, the lower end of which is connected to an mounting arc plate 902. The mounting arc plate 902 has a placement groove 903 inside, and a spring 904 is installed inside the placement groove 903. A slider 905 is installed at the lower end of the spring 904, and a vertical rod 906 is installed at the lower end of the slider 905. A second sealing gasket 907 is installed at the lower end of the vertical rod 906. Fixed arc plates 908 are provided on both sides of the mounting arc plate 902. The fixed arc plates 908 are detachably connected to the ball valve channel 2 by bolts 909. A filter plate 910 matching the ball valve channel 2 is provided in the middle position of the mounting arc plate 902.

[0041] In this embodiment, the corrosion-resistant layer 4 on the inner and outer walls of the ball valve body 1 and the ball valve plate 3 effectively resists corrosive substances such as acids and alkalis in sewage, extending the service life of the device. The detachable filter assembly 9 is quickly disassembled and assembled with the ball valve channel 2 through the fixing arc plate 908 and bolts 909, facilitating maintenance and replacement. The spring 904, slider 905 and vertical rod 906 in the mounting arc plate 902 are linked, causing the second sealing gasket 907 to deform under pressure during installation, tightly fitting the ball valve channel 2 to prevent sewage leakage. The filter plate 910 intercepts large particulate impurities in the sewage, preventing them from entering the sampling system and causing blockage or damage. The handle 901 design simplifies the disassembly process of the filter assembly, allowing the filter plate to be quickly removed for cleaning or replacement without complicated tools, improving the ease of use and reliability of the device, and ensuring the smoothness of the sampling process and the representativeness of the samples.

[0042] Specifically, the slider 905 is slidably set in the placement groove 903, the vertical rod 906 passes through the placement groove 903 and extends into the mounting groove for placing the second sealing gasket 907, and the second sealing gasket 907 has a U-shaped structure, and the ball valve channel 2 has a groove that matches the filter plate 910.

[0043] In this embodiment, the sliding design of the slider 905 within the placement groove 903, combined with the elastic action of the spring 904, allows the vertical rod 906 to automatically adjust its height when installing the filter assembly 9. This ensures that the second sealing gasket 907 with its U-shaped structure fully fits against the surface of the ball valve channel 2, forming an annular sealing strip. This effectively prevents sewage from leaking from the edge of the filter plate 910. The vertical rod 906 penetrates the placement groove 903 and extends to the sealing gasket mounting groove, evenly transmitting the elastic force of the spring to the second sealing gasket 907. This enhances the sealing effect while preventing stress concentration that could lead to sealing failure. The groove on the ball valve channel 2 and its matching structure with the filter plate 910 provide precise positioning and stable support for the filter plate, ensuring its effective interception of impurity particles in the sewage. This also facilitates the quick disassembly and replacement of the filter assembly, improving device maintenance efficiency and sampling reliability.

[0044] In use, when it is necessary to control the sampler 706 to perform wastewater sampling operations at different levels, the first motor 601 is started. The first motor 601 drives the lead screw 602 to rotate, the lead screw 602 rotates and drives the moving block 603 to move, the moving block 603 moves the crossbar 604, the moving crossbar 604 moves the first moving frame 605, the moving frame 605 moves the vertical groove 606, thereby driving the first gear 607 to move. At the same time, because the second rack 609 is fixed, the first gear 607 rotates, the rotation of the first gear 607 drives the first rack 608 to move, and so on. The movement of rack 608 drives the movement of the second moving frame 611, which in turn drives the sliding plate 612 to move. The movement of sliding plate 612 drives the sampler 706 to move, performing sampling operations on different levels of sewage. When it is necessary to seal the sampling through hole 813 after sampling, the second motor 803 is started. The second motor 803 drives the second gear 804 to rotate. The rotation of the second gear 804 drives the third rack 805 to move. The movement of the third rack 805 drives the moving plate 806 to move. The movement of the moving plate 806 causes the connecting rod 807 to move, which drives the pulley 808 to move. The pulley 808 moves along L... The L-shaped slide 809 moves horizontally first and then vertically. The mounting rod 810 drives the cover plate 811 to complete the 'horizontal approach + vertical downward press' action along the L-shaped slide 809. The cover plate 811 moves forward and then downward to press against the sampling through hole 813. The first sealing gasket 812 set below the cover plate 811 ensures the sealing performance. When it is necessary to disassemble the filter plate 910, the bolt 909 is unscrewed and the handle 901 is pulled. The handle 901 drives the filter plate 910 to move and be taken out from the groove opened on the ball valve channel 2. During installation, the spring 904 installed in the placement groove 903 is used to press the slider 905 and the vertical rod 906, so that the second sealing gasket 907 fits against the outside of the ball valve channel 2, ensuring the sealing performance of the installation arc plate 902.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of this application. The scope of this application is defined by the appended claims and their equivalents.

Claims

1. A wastewater sampling device with a corrosion-resistant ball valve, comprising a ball valve body (1), characterized in that: Ball valve channels (2) are provided on both sides of the ball valve body (1). An installation chamber (5) is provided at the upper end of the ball valve channel (2). A telescopic component (6) is provided inside the installation chamber (5). A sampling and cleaning component (7) is provided on one side of the telescopic component (6). A pressure cap component (8) is installed on one side of the sampling and cleaning component (7). The telescopic component (6) includes a first motor (601), and a lead screw (602) is provided at the output end of the first motor (601). A moving block (603) is sleeved on the outside of the lead screw (602), and a crossbar (604) is provided on both sides of the moving block (603). A first moving frame (605) is provided on the outside of the crossbar (604), and a vertical groove (606) is provided on the first moving frame (605). A first gear (607) is installed in the vertical groove (606), and a first rack (608) is installed on one side of the first gear (607). A second rack (609) is provided on the side of the first gear (607) away from the first rack (608), and a fixed frame (610) is provided on one side of the second rack (609). A second moving frame (611) is installed on one side of the first rack (608), and a sliding plate (612) is provided at the lower end of the second moving frame (611). The capping assembly (8) includes a fixed platform (801), and a bracket (802) is provided at the upper end of the fixed platform (801). A second motor (803) is provided on one side of the bracket (802), and a second gear (804) is provided at the output end of the second motor (803). A third rack (805) is provided at the lower end of the second gear (804). A movable plate (806) is installed at the lower end of the third rack (805), and two sides of the movable plate (806) are provided with... A connecting rod (807) is provided with a pulley (808) on one side. The fixed platform (801) has an L-shaped groove (809) at the corresponding position of the pulley (808). A mounting rod (810) is provided on the other side of the connecting rod (807). A cover plate (811) is installed on one side of the mounting rod (810). A first sealing gasket (812) is provided at the lower end of the cover plate (811). A sampling through hole (813) is provided on the ball valve channel (2).

2. The wastewater sampling device with an anti-corrosion ball valve according to claim 1, characterized in that: The ball valve body (1) is provided with a ball valve plate (3) inside, and the inner and outer walls of the ball valve body (1) and the ball valve plate (3) are provided with a corrosion-resistant layer (4). A detachable filter assembly (9) is installed on one side of the ball valve channel (2).

3. A wastewater sampling device with an anti-corrosion ball valve according to claim 1, characterized in that: The first motor (601) is detachably mounted on the upper end of the mounting chamber (5). The output end of the first motor (601) is detachably connected to the lead screw (602). The moving block (603) is matched with the lead screw (602). The moving block (603) is connected to the first moving frame (605) through the crossbar (604).

4. A wastewater sampling device with an anti-corrosion ball valve according to claim 1, characterized in that: The vertical groove (606) consists of two sets, which are symmetrically arranged on the first movable frame (605). The first gear (607) is rotatably arranged in the vertical groove (606). The first rack (608) is fixedly installed on the second movable frame (611), and the second rack (609) is fixedly installed on the fixed frame (610). The slide plate (612) is slidably arranged in the mounting chamber (5).

5. A wastewater sampling device with an anti-corrosion ball valve according to claim 1, characterized in that: The fixed platform (801) is fixedly installed inside the installation chamber (5), the bracket (802) is fixedly installed at the upper end of the fixed platform (801), the second gear (804) meshes with the third rack (805), and the third rack (805) is slidably installed on the fixed platform (801).

6. A wastewater sampling device with an anti-corrosion ball valve according to claim 1, characterized in that: The connecting rod (807) consists of two sets. One end of each set of connecting rods (807) is rotatably connected to the moving plate (806), and the other end of the connecting rod (807) is rotatably connected to the pulley (808). The pulley (808) is slidably disposed in the sliding groove (809). The first sealing gasket (812) has an annular structure, and the cover plate (811) matches the sampling through hole (813).

7. A wastewater sampling device with an anti-corrosion ball valve according to claim 1, characterized in that: The sampling and cleaning assembly (7) includes a cleaning liquid tank (701), the upper end of which is connected to a replenishment pipe (702), a pressure pump (703) connected to one side of the cleaning liquid tank (701), a three-way valve (704) provided on one side of the pressure pump (703), and a telescopic pipe (705) connected to the lower end of the three-way valve (704), and a sampler (706) provided at the lower end of the telescopic pipe (705).

8. A wastewater sampling device with an anti-corrosion ball valve according to claim 7, characterized in that: The sampler (706) passes through the installation chamber (5) and extends into the ball valve channel (2). The slide plate (612) is detachably connected to the sampler (706). The cleaning liquid chamber (701) is fixedly installed at the upper end of the installation chamber (5). One end of the three-way valve (704) is connected to an aspiration detection device.

9. A wastewater sampling device with an anti-corrosion ball valve according to claim 1, characterized in that: The detachable filter assembly (9) includes a handle (901), the lower end of which is connected to an mounting arc plate (902), and the mounting arc plate (902) has a placement groove (903) inside. The placement groove (903) is provided with a spring (904), the lower end of which is equipped with a slider (905), and the lower end of which is equipped with a vertical rod (906). The lower end of the vertical rod (906) is equipped with a second sealing gasket (907). The mounting arc plate (902) has fixed arc plates (908) on both sides. The fixed arc plates (908) are detachably connected to the ball valve channel (2) by bolts (909). The middle position of the mounting arc plate (902) is provided with a filter plate (910) that matches the ball valve channel (2).

10. A wastewater sampling device with an anti-corrosion ball valve according to claim 9, characterized in that: The slider (905) is slidably disposed in the placement groove (903), the vertical rod (906) passes through the placement groove (903) and extends to the mounting groove for placing the second sealing gasket (907), and the second sealing gasket (907) has a U-shaped structure. The ball valve channel (2) is provided with a groove that matches the filter plate (910).

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