A sampling device for sewage treatment

Abstract

The application discloses a sampling device for sewage treatment and belongs to the technical field of sewage treatment equipment, which comprises a guide rail, a displacement mechanism, an adjusting mechanism, a winding and unwinding mechanism and a sampling bottle. The guide rail is laid along the top of a sewage tank in a circumferential direction. The displacement mechanism comprises a driving part, a fixed frame and a movable frame. The adjusting mechanism comprises an extension frame and a plurality of sleeves. The winding and unwinding mechanism is arranged on the fixed frame and is used for pulling or lowering the sampling bottle through a cable. The displacement mechanism and the adjusting mechanism can realize sampling operation at different positions in the sewage tank, expand the use range, and meet the sampling requirements at different depths in the sewage tank through the winding and unwinding mechanism, thereby improving the use flexibility and applicability. The displacement mechanism is arranged on the guide rail through a plurality of rollers, which can ensure the installation stability of the displacement mechanism on the sewage tank, avoid the influence of water flow fluctuation in the tank on the displacement mechanism, ensure the accuracy of the sampling position, and is reliable in use.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and in particular to a sampling device for wastewater treatment. Background Technology

[0002] In wastewater treatment operations, wastewater tanks, as core facilities for temporary storage and pretreatment of wastewater, require regular sampling and testing of key indicators such as pollutant concentration and pH value to determine the suitability of subsequent treatment processes and whether the treatment effect meets standards. However, in existing technologies, wastewater sampling is usually done manually by hand using a sampling device at the edge of the wastewater. This method not only limits the sampling range and makes it difficult to sample wastewater from different locations, but it is also time-consuming, labor-intensive, and inconvenient for workers.

[0003] Based on this, the applicant disclosed a rapid sampling device for factory wastewater treatment in patent publication number CN212988889U. This device includes a floating plate, with a first motor mounted on its upper surface. The output shaft of the first motor passes through the upper surface of the floating plate and is fixedly connected to a first bevel gear. A fixing frame is fixed to the lower surface of the floating plate, and first rotating rods are rotatably connected to the two side walls of the fixing frame. Rollers are fixedly connected to both ends of the first rotating rods. This utility model is simple to operate and convenient to use. It not only replaces manual sampling, expanding the sampling range, saving time and effort, and reducing the risk of falls, but also allows sampling from deeper water areas, making sampling extremely convenient.

[0004] As can be seen from the patent above, although this rapid sampling device for factory wastewater treatment can replace manual sampling, expanding the sampling range, saving time and effort, reducing the risk of falls, and enabling sampling at deeper water levels, the applicant found after long-term use that the device has a relatively complex structural design. Although it can achieve movement and lifting functions through multiple sets of bevel gears, chains, threaded rods, and other components, suspended impurities in the wastewater can easily cause gear jamming and chain corrosion, resulting in frequent malfunctions and requiring frequent disassembly and maintenance, increasing the cost of use. At the same time, since it uses a floating plate as the sampling carrier, the floating plate is easily affected by the fluctuation of water flow in the tank, making it difficult to guarantee the accuracy of the sampling position and resulting in poor reliability. Utility Model Content

[0005] The main purpose of this invention is to overcome the shortcomings of the existing technology and provide a wastewater treatment sampling device that does not require frequent disassembly and maintenance, has low usage and maintenance costs, ensures accurate sampling location, and is reliable in use.

[0006] To achieve the above objectives, this utility model provides a sampling device for wastewater treatment, comprising a guide rail, a displacement mechanism, an adjustment mechanism, a take-up and release mechanism, and a sampling bottle. The guide rail is laid circumferentially along the top of the wastewater tank. The displacement mechanism includes a driving component, a fixed frame, and a movable frame. The fixed frame and the movable frame are respectively provided with a plurality of rollers for clamping the guide rail. The driving component is pulsatorically connected to at least one of the rollers. The adjustment mechanism includes a telescopic frame and a plurality of sleeves. The plurality of sleeves are spaced apart on the fixed frame. The telescopic frame is movably inserted into the plurality of sleeves, and the movable frame is disposed on the plurality of sleeves and can move toward or away from the fixed frame. The take-up and release mechanism is disposed on the fixed frame and lifts or lowers the sampling bottle via a cable. The cable of the take-up and release mechanism passes through the telescopic frame and is detachably connected to the sampling bottle.

[0007] Preferably, the adjustment mechanism further includes a plurality of first locking elements, which are spaced apart on the fixed frame and used to pass through the sleeve and abut against the telescopic frame.

[0008] Preferably, the adjustment mechanism further includes a plurality of second locking members, which are spaced apart on the movable frame and used to pass through the movable frame and abut against the outer wall of the sleeve.

[0009] Preferably, the telescopic frame includes a plurality of connecting rods passing through the sleeve, with a handle provided at one end of the plurality of connecting rods near the fixed frame, and a hanging plate provided at the other end of the plurality of connecting rods, with a through hole provided on the hanging plate for the cable of the retraction mechanism to pass through.

[0010] Preferably, the fixed frame and the movable frame are respectively provided with limit plates, and positioning holes are opened on both limit plates at the positions corresponding to the through holes.

[0011] Preferably, the movable frame is provided with a tray for placing the sampling bottle.

[0012] Preferably, the sampling bottle includes a bottle cap, a bottle body, a filter screen, and several valves. The bottle cap is detachably connected to the cables of the bottle body and the take-up and take-down mechanism. Several water intake chambers are formed in the bottle body through partitions. A valve is provided at the bottom of each of the several water intake chambers. A filter screen for blocking the several valves is provided at the bottom of the bottle body. A counterweight is provided on the outer wall of the bottle body.

[0013] Beneficial effects: 1. The present invention provides a wastewater treatment sampling device that, through the combined use of a displacement mechanism and an adjustment mechanism, enables sampling operations at different locations within the wastewater tank, significantly expanding its application range. Furthermore, the retraction mechanism can meet the sampling requirements at different depths within the wastewater tank, greatly improving its flexibility and applicability.

[0014] 2. The sampling device for sewage treatment of this utility model uses several rollers to set the displacement mechanism as a whole on the guide rail. This not only prevents the lifting and lowering mechanism from tipping over or loosening when lifting or lowering the sampling bottle, ensuring the stability of the displacement mechanism on the sewage tank, but also avoids the displacement mechanism from being affected by the fluctuation of water flow in the tank, ensuring the accuracy of the sampling position and reliable use.

[0015] 3. In the wastewater treatment sampling device of this utility model, the driving component in the displacement mechanism directly drives the roller to move directly on the guide rail, and the take-up and take-down mechanism directly drives the sampling bottle to move up and down through the cable. Neither has redundant transmission components, so there is no need for frequent disassembly and maintenance. Moreover, suspended impurities in wastewater usually only adhere to the surface of the cable. The cable has low manufacturing cost, and replacement and cleaning operations are simple and quick, making maintenance convenient and reliable. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the installation of a wastewater sampling device on a wastewater tank according to an embodiment of the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the structure of a wastewater treatment sampling device according to an embodiment of the present invention from a first-view perspective; Figure 4 This is a schematic diagram of the structure of a wastewater treatment sampling device according to an embodiment of the present invention from a second perspective. Figure 5 This is a schematic diagram of the structure of a sampling bottle in a wastewater treatment sampling device according to an embodiment of the present invention.

[0018] In the diagram: 100-Sewage tank; 1-Guide rail; 2-Displacement mechanism; 3-Adjustment mechanism; 4-Retraction and unfolding mechanism; 5-Sampling bottle; 6-Drive component; 7-Fixed frame; 8-Movable frame; 9-Roller; 10-Telescopic frame; 11-Sleeve; 12-First locking component; 13-Second locking component; 14-Connecting rod; 15-Handle; 16-Hanging plate; 17-Limiting plate; 18-Support plate; 19-Bottle cap; 20-Bottle body; 21-Filter screen; 22-Valve; 23-Water intake chamber; 24-Counterweight block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Example 1: This utility model proposes a sampling device for sewage treatment.

[0026] In one embodiment of this utility model, a sampling device for sewage treatment includes a guide rail 1, a displacement mechanism 2, an adjustment mechanism 3, a take-up and release mechanism 4, and a sampling bottle 5. The guide rail 1 is laid circumferentially along the top of the sewage tank 100. The displacement mechanism 2 includes a driving member 6, a fixed frame 7, and a movable frame 8. The fixed frame 7 and the movable frame 8 are respectively provided with a plurality of rollers 9 for clamping the guide rail 1. The driving member 6 is connected to at least one roller 9 in a transmission manner. The adjustment mechanism 3 includes a telescopic frame 10 and a plurality of sleeves 11. The plurality of sleeves 11 are spaced apart on the fixed frame 7. The telescopic frame 10 is movably inserted into the plurality of sleeves 11, and the movable frame 8 is disposed on the plurality of sleeves 11 and can move toward or away from the fixed frame 7. The take-up and release mechanism 4 is disposed on the fixed frame 7 and lifts or lowers the sampling bottle 5 through a cable. The cable of the take-up and release mechanism 4 passes through the telescopic frame 10 and is detachably connected to the sampling bottle 5.

[0027] Working principle: This utility model discloses a sampling device for sewage treatment. The guide rail 1 is laid on the top of the sewage tank 100, and the roller 9 (which clamps the guide rail 1) is driven by the drive component 6 of the displacement mechanism 2 to move along the guide rail 1. This allows for adjustment of the sampling position, enabling sampling operations at different locations within the sewage tank 100 while ensuring the accuracy of the sampling position. At the same time, the take-up and take-down mechanism 4 is set on the fixed frame 7. Its cable passes through the telescopic frame 10 and is detachably connected to the sampling bottle 5. By lowering or raising the sampling bottle 5 through the cable, the sampling depth can be precisely controlled, enabling sewage sampling at different depths. The overall structure has no complex transmission parts, operates stably, requires no frequent disassembly and maintenance, has low usage and maintenance costs, and is reliable in use.

[0028] Specifically, such as Figures 1 to 5As shown, in this utility model, a sampling device for sewage treatment, the guide rail 1 can be installed on the top of the sewage tank 100 by welding or threaded connection, which facilitates the disassembly and replacement of the guide rail 1. Meanwhile, since the fixed frame 7 and movable frame 8 of the displacement mechanism 2 are respectively provided with several rollers 9, that is, the rollers 9 on the fixed frame 7 and movable frame 8 are respectively spaced above and below the guide rail 1 (the rollers 9 respectively roll and contact the top and bottom surfaces of the guide rail 1), the guide rail 1 can be clamped and the displacement mechanism 2 can be installed and fixed as a whole. Furthermore, the rollers 9 provide multi-point installation limit for the displacement mechanism 2 on the guide rail 1, thereby preventing the lifting and lowering mechanism 4 from tipping over when lifting or lowering the sampling bottle 5. To ensure the stability of the displacement mechanism 2 on the sewage tank 100, and to prevent the displacement mechanism 2 from being affected by water flow fluctuations within the tank, thus ensuring the accuracy of the sampling position and reliable use, the following measures are taken: The displacement mechanism 2 is movably mounted on the guide rail 1 to avoid the influence of water flow fluctuations within the tank. Furthermore, by connecting the drive component 6 in the displacement mechanism 2 to at least one roller 9 via a transmission connection, such as gear transmission, and the drive component 6 can be a geared motor as used in existing technologies, the displacement mechanism 2 can be moved and adjusted on the guide rail 1 to meet the sampling needs at different locations within the sewage tank 100. This expands the sampling range, improves the flexibility and applicability of use, and eliminates the need for manual adjustment of the installation position of the displacement mechanism 2, saving time and effort and improving sampling efficiency.

[0029] In addition, it should be noted that, such as Figure 2 As shown, an electrical cabinet is installed on the side of the fixed frame 7 away from the sewage tank 100. The electrical cabinet contains a control system and a power supply. The control system can remotely receive instructions from the staff and control the operation of the drive unit 6. The power supply serves as the power source for the drive unit 6. The power supply, the control system, and the method of remotely receiving instructions are all mature existing technologies and will not be described in detail here.

[0030] Furthermore, since several sleeves 11 in the adjusting mechanism 3 are spaced apart on the fixed frame 7, and a telescopic frame 10 is movably inserted through each sleeve 11, the telescopic frame 10 can be installed within the sleeves 11 using a pin-pin connection, etc. That is, several locking holes are correspondingly opened on each sleeve 11 along their respective extension directions, and an elastic pin (a spring and pin assembly) capable of extending into any of the locking holes is provided on the telescopic frame 10. When sampling is required at different locations within the sewage tank 100, the cable of the take-up and take-down mechanism 4 passes through the telescopic frame 10 and is detachably connected to the sampling bottle 5 (the detachable connection can be achieved using hooks, rings, binding, or threaded connections, etc.). The operator can push and pull the telescopic frame 10 to move the sampling bottle 5 away from the fixed frame 7 (the retraction mechanism 4 is in the cable release state). After the sampling bottle 5 moves to the preset position, the elastic pin on the telescopic frame 10 engages with the corresponding locking hole to fix the telescopic frame 10. At this time, the operator can lower the sampling bottle 5 through the retraction mechanism 4 to sample the sewage at the preset position. The operation is simple and convenient. After sampling, the retraction mechanism 4 retracts the cable to pull the sampling bottle 5 back to the water surface. The operator can then pull back the telescopic frame 10 to move the sampling bottle 5 to the wall of the sewage tank 100, thereby collecting the sewage in the sampling bottle 5. In addition, the installation method of limiting the telescopic frame 10 within several sleeves 11 can also use cylinders, hydraulic cylinders, or electric push rods, etc., so that the telescopic frame 10 can be automatically adjusted relative to several sleeves 11 through the control system, without the need for manual pushing and pulling by the operator, making it simpler and more convenient to use. Since cylinders, hydraulic cylinders, or electric actuators are all mature existing technologies, they will not be elaborated on here.

[0031] It is worth noting that since the movable frame 8 is set on several sleeves 11 and can move towards or away from the fixed frame 7, the movable frame 8 can also be installed on the sleeves 11 using pin clamping or other methods. When the displacement mechanism 2 needs to be installed, the operator moves the movable frame 8 away from the fixed frame 7, so that the guide rail 1 can extend between the fixed frame 7 and the movable frame 8. At the same time, the rollers 9 on the fixed frame 7 abut against the top and bottom surfaces of the guide rail 1, respectively. That is, the fixed frame 7 is clamped and installed on the guide rail 1 by the rollers 9. After the fixed frame 7 is installed, the movable frame 8 is moved towards the fixed frame 7 relative to the sleeves 11, and the rollers 9 on the movable frame 8 abut against the top and bottom surfaces of the guide rail 1, respectively. This can achieve the overall installation and fixation of the displacement mechanism 2. The structural design is simple and reasonable. Similarly, the displacement mechanism 2 can also be disassembled using the above method, which makes it convenient for the operator to install and remove the displacement mechanism 2 on the sewage tank 100, which is beneficial for maintenance.

[0032] Compared with the prior art, the wastewater treatment sampling device of this utility model, through the combined use of the displacement mechanism 2 and the adjustment mechanism 3, can achieve sampling operations at different locations within the wastewater tank 100, significantly expanding its application range. Furthermore, the release mechanism 4 can meet the sampling needs at different depths within the wastewater tank 100, greatly improving its flexibility and applicability. The displacement mechanism 2 is integrally mounted on the guide rail 1 by several rollers 9, which not only prevents the release mechanism 4 from tipping over or loosening when lifting or lowering the sampling bottle 5, but also ensures the stability of the displacement mechanism 2. The stable installation on the sewage tank 100 also prevents the displacement mechanism 2 from being affected by the fluctuation of water flow in the tank, ensuring the accuracy of the sampling position and reliable use. The drive component 6 in the displacement mechanism 2 directly drives the roller 9 to move directly on the guide rail 1, and the take-up and take-down mechanism 4 directly drives the sampling bottle 5 to move up and down through the cable. Neither has redundant transmission components, so there is no need for frequent disassembly and maintenance. Moreover, suspended impurities in sewage usually only adhere to the surface of the cable, and the cable has low manufacturing cost, simple and quick replacement and cleaning operation, convenient maintenance, and reliable use.

[0033] In one embodiment, the adjusting mechanism 3 further includes a plurality of first locking members 12, which are spaced apart on the fixed frame 7 and used to pass through the sleeve 11 and abut against the telescopic frame 10. Specifically, as Figures 2 to 4 As shown, several first locking parts 12 can be wrenches with studs, and the fixing frame 7 has threaded holes that are adapted to the first locking parts 12 at the positions corresponding to each sleeve 11. The threaded holes penetrate the side wall of the sleeve 11 and communicate with the inside of the sleeve 11, so that the first locking parts 12 can pass through the side wall of the sleeve 11 through the threaded engagement and abut against the outer wall of the telescopic frame 10. The structural design is simple and reasonable. Furthermore, in actual use, when the staff pushes the telescopic frame 10 along the sleeve 11 to a preset length according to the position of the target sampling point, they only need to manually tighten the first locking member 12 so that its end is tightly pressed against the outer wall of the telescopic frame 10. The static friction between the first locking member 12 and the telescopic frame 10 can limit the relative sliding between the telescopic frame 10 and the sleeve 11, thereby fixing the position of the telescopic frame 10. When the position of the target sampling point changes, the staff needs to adjust the extension length of the telescopic frame 10 relative to the sleeve 11. Therefore, the staff can loosen the first locking member 12 in the opposite direction to release its tight restraint on the telescopic frame 10. At this time, the telescopic frame 10 can be pushed and pulled again to adjust and match the actual position of the target sampling point.

[0034] In addition, it is understandable that the first locking component 12 uses a wrench with a stud, which is simple and convenient to operate. The staff can fix and adjust the telescopic frame 10 without carrying complicated tools. Compared with other complex locking structures (such as pin-shaft locking that requires alignment of lock holes), it not only reduces the difficulty of operation, but also improves the flexibility and efficiency of adjusting the position of the telescopic frame 10. It improves the adaptability and reliability of the sampling device for sewage treatment of this utility model in different specifications of sewage tank 100 or different sampling point scenarios. Moreover, the first locking component 12 has a simple structure and low manufacturing cost, which can reduce the complexity and maintenance burden of the adjustment mechanism 3.

[0035] In one embodiment, the adjusting mechanism 3 further includes a plurality of second locking members 13, which are spaced apart on the movable frame 8 and used to pass through the movable frame 8 and abut against the outer wall of the sleeve 11. Specifically, as Figures 2 to 4 As shown, several second locking parts 13 can also be wrenches with studs, and each sleeve 11 on the movable frame 8 has a threaded hole that matches the second locking part 13. The threaded hole passes through the movable frame 8 and is opposite to the outer wall of the sleeve 11, so that the second locking part 13 can pass through the movable frame 8 through the thread and abut against the outer wall of the sleeve 11. The structure design is simple and reasonable. Furthermore, in actual use, when the sampling device for sewage treatment of this utility model is in use, after the rollers 9 on the movable frame 8 are installed in place (i.e., the rollers 9 roll in contact with the top and bottom surfaces of the guide rail 1 respectively), the operator only needs to manually tighten the second locking member 13 so that its end forms a reliable and tight abutment with the outer wall of the sleeve 11. The static friction between the second locking member 13 and the sleeve 11 can limit the relative sliding between the movable frame 8 and the sleeve 11, ensuring the overall structural stability and movement reliability of the displacement mechanism 2. Similarly, when it is necessary to disassemble the displacement mechanism 2, the operator only needs to loosen the second locking member 13 in the opposite direction to release the restriction on the movable frame 8, and then push the movable frame 8 away from the guide rail 1 so that the rollers 9 disengage from the guide rail 1. At this time, the displacement mechanism 2 and all related mechanism components it carries can be directly removed from the sewage tank 100. The operation is simple and easy to maintain.

[0036] In addition, it is understandable that the second locking component 13 uses a wrench with a stud, which is simple and convenient to operate. The staff can quickly disassemble and assemble the displacement mechanism 2 without carrying complicated tools. Compared with other complex locking structures (such as pin-shaft locking that requires alignment of the locking hole), it not only reduces the difficulty of operation, but also improves the convenience and efficiency of disassembling and assembling the displacement mechanism 2. Moreover, the second locking component 13 has a simple structure and low manufacturing cost, which can reduce the complexity and maintenance burden of the adjustment mechanism 3.

[0037] In one embodiment, the telescopic frame 10 includes a plurality of connecting rods 14 passing through the sleeve 11. A handle 15 is provided at one end of each connecting rod 14 near the fixed frame 7, and a hanging plate 16 is provided at the other end of each connecting rod 14. The hanging plate 16 has a through hole for the cable of the retraction mechanism 4 to pass through. Specifically, as shown... Figures 2 to 4 As shown, since several connecting rods 14 in the telescopic frame 10 are respectively inserted into several sleeves 11 (in this embodiment, the connecting rods 14 are made of stainless steel, which has both corrosion resistance and structural strength, and is suitable for the humid and polluted environment around the sewage tank 100), the sleeves 11 can play a positioning and guiding role for the connecting rods 14; at the same time, by setting a handle 15 at one end of the connecting rod 14 near the fixed frame 7, the handle 15 can be a U-shaped metal rod, which makes it easy for the staff to grasp and directly and quickly adjust the extension distance of the connecting rod 14 relative to the sleeve 11, so that... The sampling bottle 5 can be moved precisely to the preset position, and a rubber anti-slip sleeve can be fitted on the outer wall of the handle 15 to improve grip comfort and friction. Furthermore, since a hanging plate 16 is provided at the other end of the connecting rod 14, and a through hole is provided on the hanging plate 16 for the cable of the winding mechanism 4 to pass through, and a wear-resistant bushing can be installed in the through hole, it can not only provide precise guidance for the cable, ensuring that the sampling bottle 5 always moves up and down in the vertical direction, improving the accuracy of sampling depth, but also reduce frictional wear between the cable and the hanging plate 16, extending the service life of the cable.

[0038] In one embodiment, such as Figures 2 to 4 As shown, limit plates 17 are respectively provided on the fixed frame 7 and the movable frame 8, and positioning holes are opened at the corresponding through holes on both limit plates 17. It can be understood that the cable of the winding mechanism 4 can pass through the positioning holes of the limit plates 17 of the fixed frame 7 and the upper limit plates 17 of the movable frame 8 in sequence, and then pass through the through hole on the hanging plate 16 to connect with the sampling bottle 5. Wear-resistant bushings (with the same material as the bushings of the through holes of the hanging plate 16) can also be provided in the two positioning holes, thereby reducing frictional loss when the cable slides. Furthermore, in actual use, when the winding mechanism 4 lowers or pulls the cable, the cable always moves along the coaxial path of the positioning holes of the fixed frame 7, the positioning holes of the movable frame 8 and the through hole of the hanging plate 16 in sequence, forming a three-point guiding structure. This can effectively constrain the sway space of the cable, ensure that the sampling bottle 5 always rises and falls in the vertical direction, significantly improve the accuracy of the sampling depth, and avoid friction between the cable and other components, thus extending the service life of the cable. In addition, the two limiting plates 17 and their positioning holes can provide multi-point support and limit the cable, thereby ensuring the stability of the sampling bottle 5 during lifting and moving.

[0039] In one embodiment, the movable frame 8 is provided with a tray 18 for placing the sampling bottle 5. Specifically, as shown... Figure 3 and Figure 4As shown, the tray 18 can be installed on the movable frame 8 via a threaded connection, which facilitates disassembly and replacement of the tray 18 and aids in maintenance. Furthermore, during the manufacturing process, the size of the tray 18 is preferably larger than the diameter of the sampling bottle 5, thereby ensuring that the sampling bottle 5 can be stably placed on the tray 18. In addition, the tray 18 can also be equipped with an anti-slip pad (anti-slip pads are mature and conventional existing technology, therefore not directly shown in the accompanying drawings). The surface of the anti-slip pad can have grooves adapted to the size of the sampling bottle 5, thereby effectively preventing the sampling bottle 5 from moving freely on the tray 18. Understandably, in actual use, when the sampling device for sewage treatment of this utility model is used, after the collection and release mechanism 4 lifts the sampling bottle 5 from the sewage tank 100 to the surface of the water via the cable, the staff can control the adjustment mechanism 3 to pull back the sampling bottle 5, and the collection and release mechanism 4 simultaneously retracts the cable, so that the sampling bottle 5 can be placed stably on the tray 18 (specifically, in the groove of the anti-slip pad). Then, the detachable connection between the top of the sampling bottle 5 and the cable is disconnected (such as removing the connection between the hook and the hanging ring), thus completing the temporary storage of the sampling bottle 5. When the water sample needs to be transferred later, the sampling bottle 5 can be directly removed from the tray 18, without the staff having to hold the sampling bottle 5 in their hands throughout the process, and without having to find a temporary placement point.

[0040] In one embodiment, such as Figures 3 to 5 As shown, the sampling bottle 5 includes a cap 19, a bottle body 20, a filter screen 21, and several valves 22. The cap 19 is detachably connected to the cables of the bottle body 20 and the launching mechanism 4. Several water intake chambers 23 are formed inside the bottle body 20 through partitions. A valve 22 is provided at the bottom of each of the water intake chambers 23. A filter screen 21 is provided at the bottom of the bottle body 20 to cover the valves 22, and a counterweight 24 is provided on the outer wall of the bottle body 20. Understandably, in actual use, the sampling device for sewage treatment of this utility model allows the operator to lower the sampling bottle 5 by activating the launching mechanism 4. At this time, the counterweight 24 causes the sampling bottle 5 to sink vertically into the sewage, and the filter screen 21 can filter out suspended impurities in the sewage, thereby preventing impurities from entering the water intake chambers 23 and affecting the test results. Furthermore, if water samples need to be collected at different depths, the sampling bottle 5 can be lowered to the first target depth, pause briefly, and then the valve 22 of the corresponding water sampling chamber 23 can be opened (the valve 22 can be a solenoid valve or a plastic shut-off valve, and the operator can determine the sinking depth through a preset cable marker or the stroke counter of the retraction mechanism 4). After the sewage enters the water sampling chamber 23, the valve 22 is closed, and the bottle is lowered to the second target depth. Repeating this operation can achieve single-time multi-depth water sample collection. The structure is simple and reliable in use. In addition, after sampling is completed, the retraction mechanism 4 lifts the sampling bottle 5 onto the tray 18. At this time, the filter screen 21 can be removed to quickly open the corresponding valve 22 to export the water samples from each water sampling chamber 23 to the testing container. This is simple and convenient to use.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sampling device for wastewater treatment, characterized in that, The system includes a guide rail (1), a displacement mechanism (2), an adjustment mechanism (3), a take-up and put-down mechanism (4), and a sampling bottle (5). The guide rail (1) is laid circumferentially along the top of the sewage tank. The displacement mechanism (2) includes a drive component (6), a fixed frame (7), and a movable frame (8). The fixed frame (7) and the movable frame (8) are respectively provided with several rollers (9) for clamping the guide rail (1). The drive component (6) is connected to at least one of the rollers (9) in a transmission manner. The adjustment mechanism (3) includes a telescopic frame (10) and several sleeves (11). A plurality of sleeves (11) are spaced apart on the fixed frame (7), and the telescopic frame (10) is movably inserted into the plurality of sleeves (11). The movable frame (8) is disposed on the plurality of sleeves (11) and can move toward or away from the fixed frame (7). The take-up and release mechanism (4) is disposed on the fixed frame (7) and lifts or lowers the sampling bottle (5) by means of a cable. The cable of the take-up and release mechanism (4) passes through the telescopic frame (10) and is detachably connected to the sampling bottle (5).

2. The sampling device for sewage treatment according to claim 1, characterized by The adjustment mechanism (3) further includes a plurality of first locking elements (12), which are spaced apart on the fixed frame (7) and are used to pass through the sleeve (11) and abut against the telescopic frame (10).

3. The sampling device for sewage treatment according to claim 2, characterized by The adjustment mechanism (3) further includes a plurality of second locking elements (13), which are spaced apart on the movable frame (8) and are used to pass through the movable frame (8) and abut against the outer wall of the sleeve (11).

4. A sampling device for wastewater treatment according to claim 3, characterized in that, The telescopic frame (10) includes several connecting rods (14) passing through the sleeve (11). Each of the connecting rods (14) has a handle (15) at one end near the fixed frame (7), and a hanging plate (16) at the other end of the connecting rods (14). The hanging plate (16) has a through hole for the cable of the retraction mechanism (4) to pass through.

5. A sampling device for wastewater treatment according to claim 4, characterized in that, Limiting plates (17) are respectively provided on the fixed frame (7) and the movable frame (8), and positioning holes are provided on the two limiting plates (17) corresponding to the positions of the through holes.

6. A sampling device for sewage treatment according to any one of claims 1-5, characterized in that The movable frame (8) is provided with a tray (18) for placing the sampling bottle (5).

7. A sampling device for wastewater treatment according to any one of claims 1-5, characterized in that, The sampling bottle (5) includes a bottle cap (19), a bottle body (20), a filter screen (21), and several valves (22). The bottle cap (19) is detachably connected to the cables of the bottle body (20) and the storage mechanism (4). Several water intake chambers (23) are formed inside the bottle body (20) through partitions. A valve (22) is provided at the bottom of each of the several water intake chambers (23). The filter screen (21) for blocking the several valves (22) is provided at the bottom of the bottle body (20). A counterweight (24) is provided on the outer wall of the bottle body (20).

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