A sampling device for sewage filtration effectiveness evaluation

Abstract

The application provides a sampling device for sewage filtering effect evaluation, and belongs to the technical field of sewage treatment detection. The positioning ring is provided with a first flow guide groove and a second flow guide groove. The first flow guide groove is provided with a first opening hole, and the first opening hole penetrates the side wall of the branch pipe. The second flow guide groove is provided with a second opening hole. The rotating wheel is rotationally matched with the positioning ring. The rotating wheel is provided with a collecting hole, and the collecting hole is slidably matched with a sliding piece. When the collecting hole is in a first working state, the collecting hole is communicated with the first flow guide groove, and the sliding piece moves from one end of the collecting hole close to the positioning ring to the other end away from the positioning ring. When the collecting hole is in a second working state, the collecting hole is communicated with the second flow guide groove, and the sliding piece moves from one end of the collecting hole away from the positioning ring to the other end close to the positioning ring. The device can conveniently sample at the outlet position of the filtering device, is simple and convenient, has low dependence on manual operation, can effectively reduce the risk of sewage leakage, and is safer.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment testing technology, and more specifically, to a sampling device for evaluating the filtration effect of wastewater. Background Technology

[0002] Filtration is a frequently used method in wastewater treatment. To ensure stable filtration results, the filtration system is usually cleaned or its components replaced regularly.

[0003] In practical applications, if regular maintenance is adopted, the filter may still be in normal working condition and can continue to be used for a period of time at the time of maintenance, or the filtration effect of the filter may have already significantly decreased beforehand. Therefore, regular maintenance has a certain degree of blindness.

[0004] To improve the accuracy of filtration device maintenance and reduce the impact on normal wastewater filtration operations, the wastewater at the filter's outlet can be tested to determine if the filtration function is normal and whether maintenance is needed. When using this method, the sampling point should be set at the filter's outlet to minimize interference.

[0005] In existing technologies, a sampling tube connected to the outlet of the filter device can be installed, and a valve can be installed on the sampling tube to complete the sampling. However, this sampling method relies on manual sampling. If the manual operation is improper, such as the valve not being completely closed after sampling, or the valve of the sampling tube malfunctioning, it will lead to sewage leakage and secondary pollution. Summary of the Invention

[0006] The purpose of this application is to provide a sampling device for evaluating the effect of wastewater filtration. It can conveniently take samples at the outlet of the filtration device, is simple and convenient, has low dependence on manual labor, can effectively reduce the risk of wastewater leakage, and is safer.

[0007] The embodiments of this application are implemented as follows:

[0008] A sampling device for evaluating the filtration effect of wastewater includes: a side branch pipe, a positioning ring, a rotating wheel, and a drive mechanism.

[0009] The side branch pipe has a first end and a second end, both of which are used to communicate with the output pipe of the filter device. Along the flow direction of the output pipe, the second end is located downstream of the first end.

[0010] A positioning ring is fixedly connected to the outer wall of the side branch pipe. The inner wall of the positioning ring has a first guide groove and a second guide groove, both extending circumferentially along the positioning ring. The first and second guide grooves are spaced apart along the circumferential direction of the positioning ring. The inner wall of the first guide groove has a first opening that penetrates the positioning ring and further penetrates the side wall of the side branch pipe. The inner wall of the second guide groove has a second opening that extends to the outer wall of the positioning ring. The second opening is used to communicate with a sewage collection container.

[0011] The rotating wheel is fitted into the positioning ring, and the outer ring wall of the rotating wheel fits into the inner ring wall of the positioning ring, and the two rotate in a sealed manner.

[0012] The outer ring wall of the rotor has a collection hole, which is arranged radially along the rotor. A sliding element is slidably fitted inside the collection hole. The sliding element is driven by a drive mechanism.

[0013] During the rotation of the rotating wheel along the positioning ring, the collecting hole has a first working state and a second working state.

[0014] When the collection hole is in the first working state, the collection hole is connected to the first guide channel. The driving mechanism is used to drive the sliding member from the end of the collection hole near the positioning ring to the end away from the positioning ring, so that the sewage in the side branch pipe enters the collection hole.

[0015] When the collection hole is in the second working state, the collection hole is connected to the second guide channel, and the driving mechanism is used to drive the sliding member from the end of the collection hole away from the positioning ring to the end of the collection hole close to the positioning ring, so that the sewage in the collection hole enters the second opening.

[0016] Furthermore, the collection hole extends axially through one side wall of the rotor. A ring-shaped component is provided at one end of the collection hole near the positioning ring. The ring-shaped component is coaxially arranged with the collection hole, and its outer ring wall is fitted and fixedly connected to the hole wall of the collection hole.

[0017] A telescopic tube is installed inside the collection hole. One end of the telescopic tube is fixedly connected to the annular component, and the other end is fixedly connected to the sliding component.

[0018] A groove is provided in the middle of the side wall of the wheel, and the collection hole is connected to the groove.

[0019] The drive mechanism includes: a driver, a drive shaft, and a first control arm.

[0020] The drive shaft is driven by the driver and is eccentrically set relative to the rotating wheel. The rotation axis of the drive shaft is parallel to the rotation axis of the rotating wheel.

[0021] The first control arm is fixedly connected to the drive shaft and arranged radially along the drive shaft, with a mating part at the end of the first control arm away from the drive shaft.

[0022] There are multiple collection holes, which are evenly spaced along the circumference of the rotating wheel.

[0023] When the drive shaft rotates, the mating component enters the collection hole from the end of the collection hole furthest from the positioning ring, thereby driving the rotating wheel to rotate. Simultaneously, it drives the sliding component from the end of the collection hole furthest from the positioning ring to the end closest to the positioning ring, allowing wastewater in the collection hole to enter the second opening. As the drive shaft continues to rotate, the mating component continues to drive the rotating wheel to rotate, and simultaneously moves from the end of the collection hole closest to the positioning ring to the end furthest from the positioning ring, entering the groove from the end of the collection hole furthest from the positioning ring.

[0024] Furthermore, the drive mechanism also includes a second control arm.

[0025] The second control arm is fixedly connected to the drive shaft and arranged radially along the drive shaft. The first control arm and the second control arm are respectively located on opposite sides of the drive shaft.

[0026] The end wall of the second control arm away from the drive shaft is an arc-shaped wall, and the central axis of the cylinder corresponding to the arc-shaped wall is set to coincide with the rotation axis of the drive shaft.

[0027] Limiting blocks are also fixedly connected to the side wall of the rotating wheel. The number of limiting blocks is the same as the number of collection holes, and the limiting blocks are evenly spaced along the circumference of the rotating wheel.

[0028] The side wall of the limiting block near the rotation axis of the rotating wheel is arc-shaped, and the curvature of the side wall of the limiting block near the rotation axis of the rotating wheel is the same as the curvature of the arc-shaped wall.

[0029] When the mating part is in the groove, the arc-shaped wall fits against the side wall of the limiting block near the rotation axis of the rotating wheel.

[0030] Furthermore, the number of collection holes is 3.

[0031] The sampling device also includes a processor, a distance sensor, and a detection circuit.

[0032] Both the distance sensor and the detection circuit are electrically connected to the processor.

[0033] The distance sensor is located at the end of the first control arm away from the drive shaft, and the distance sensor is oriented towards the side away from the drive shaft.

[0034] The arc-shaped wall is embedded with a first conductive terminal and a second conductive terminal, which are spaced apart. The first conductive terminal is electrically connected to one pole of the detection circuit, and the second conductive terminal is electrically connected to the other pole of the detection circuit.

[0035] A conductive core is embedded in the side wall of the limiting block near the rotation axis of the rotating wheel, and both ends of the conductive core extend to the surface of the side wall of the limiting block near the rotation axis of the rotating wheel.

[0036] When the collection hole located on the side of the central axis of the rotary wheel away from the drive shaft is parallel to the first control arm, the distance sensor slides toward the collection hole, and the first conductive terminal and the second conductive terminal are electrically connected to the two ends of the conductive core, so as to close the detection circuit.

[0037] When the detection circuit is closed, the processor determines the amount of sewage in the corresponding collection hole based on the detection value of the distance sensor.

[0038] Furthermore, the slider has a damped sliding fit with the collection hole.

[0039] When the detection circuit is closed, the processor is also used to determine whether the filtration effect of the filter device is normal based on the detection value of the distance sensor.

[0040] Furthermore, the mating parts are cylindrical.

[0041] Furthermore, the length of the first control arm is greater than the length of the second control arm, and the length of the first control arm is less than the radius of the wheel.

[0042] Furthermore, the sampling device also includes: a cleaning agent inlet pipe, a cleaning agent outlet pipe, an air inlet pipe, and an air outlet pipe.

[0043] Control valves are installed at both ends of the branch pipe, the cleaning agent inlet pipe, the cleaning agent outlet pipe, the air inlet pipe, and the air outlet pipe.

[0044] Both the cleaning agent inlet pipe and the air inlet pipe are connected to one end of the branch pipe. Along the flow direction of sewage in the branch pipe, both the cleaning agent inlet pipe and the air inlet pipe are located downstream of the control valve at the inlet end of the branch pipe.

[0045] Both the cleaning agent outlet pipe and the air outlet pipe are connected to the other end of the branch pipe. Along the flow direction of the sewage in the branch pipe, both the cleaning agent outlet pipe and the air outlet pipe are located upstream of the control valve at the outlet end of the branch pipe.

[0046] The beneficial effects of the technical solutions in this application include:

[0047] When it is necessary to sample the wastewater at the outlet of the filtration device, the rotating wheel is controlled to rotate relative to the positioning ring, so that the collection hole switches between the first working state and the second working state, and the wastewater sample can be collected smoothly. It is simple and convenient.

[0048] Meanwhile, this solution utilizes a positioning ring and a rotating wheel to isolate the side branch pipe and the second opening. The collection port is switched between a first and second operating state solely by rotating the wheel, thus intermittently transporting sewage from the side branch pipe to the sewage collection container. When the wheel stops rotating, the connection between the side branch pipe and the second opening is completely blocked, significantly reducing the probability of accidental sewage leakage from the side branch pipe.

[0049] In addition, by using the collection hole to transfer sewage samples from the side branch pipe to the sewage collection container, the amount of sewage samples collected can be better controlled, effectively reducing secondary pollution caused by excessive release of sewage samples.

[0050] Overall, the sampling device for evaluating the filtration effect of wastewater provided in this application embodiment can conveniently take samples at the outlet of the filtration device, which is simple and convenient, has low dependence on manual labor, can effectively reduce the risk of wastewater leakage, and is safer. Attached Figure Description

[0051] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application 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.

[0052] Figure 1 This is a schematic diagram of the overall structure of the sampling device provided in the embodiments of this application;

[0053] Figure 2 This is a schematic diagram showing the fit between the side branch pipe, positioning ring, and rotating wheel of the sampling device (when the fitting parts are about to leave the collection hole).

[0054] Figure 3 This is a schematic diagram of the rotor structure;

[0055] Figure 4 This is a schematic diagram showing the fit between the side branch pipe and the positioning ring;

[0056] Figure 5 This is a schematic diagram of the structure at the outer ring wall of the rotor;

[0057] Figure 6 This is a schematic diagram showing the fit between the side branch pipe, positioning ring, and rotating wheel of the sampling device (when the fitting parts move to the middle of the groove).

[0058] Figure 7 This is a schematic diagram showing the fit between the side branch pipe, positioning ring, and rotating wheel of the sampling device (when the fitting parts are about to enter the collection hole).

[0059] Figure 8This is a schematic diagram of the fit between the side branch pipe, positioning ring, and rotating wheel of the sampling device (when the distance between the fitting parts and the positioning ring reaches its minimum value).

[0060] Figure 9 for Figure 2 A schematic diagram of the structure at the first opening in the shown state;

[0061] Figure 10 for Figure 8 A schematic diagram of the structure at the mating part in the shown state;

[0062] Figure 11 for Figure 6 The diagram shows the interaction between the second control arm and the limit block in the indicated state.

[0063] Explanation of reference numerals in the attached figures:

[0064] Side branch pipe 100; first end 110; second end 120; positioning ring 200; first guide groove 210; first opening 220; second guide groove 230; second opening 240; rotating wheel 300; collection hole 310; sliding member 320; slider 321; ring member 330; telescopic pipe 340; groove 350; telescopic rod 360; limiting block 370; sliding groove 380; drive shaft 400; first control arm 410; mating member 411; second control arm 420; arc-shaped wall 421; distance sensor 510; first conductive terminal 520; second conductive terminal 530; conductive core 540; cleaning agent input pipe 610; cleaning agent output pipe 620; air input pipe 630; air output pipe 640; control valve 650; output pipe 2000. Detailed Implementation

[0065] 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.

[0066] 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.

[0067] 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.

[0068] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0069] Furthermore, the terms "vertical" and "parallel" do not mean that the parts must be absolutely vertical or parallel, but can be slightly tilted.

[0070] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] The technical solutions of this application will be described by way of example through some embodiments below.

[0072] See Figures 1-4 This application provides a sampling device for evaluating the filtration effect of wastewater. The sampling device includes: a side branch pipe 100, a positioning ring 200, a rotating wheel 300, and a driving mechanism.

[0073] The side branch pipe 100 has a first end 110 and a second end 120, both of which are used to communicate with the output pipe 2000 of the filter device (not shown in the figure). Along the flow direction of sewage in the output pipe 2000, the second end 120 is located downstream of the first end 110.

[0074] The outer ring wall of the positioning ring 200 is attached to and fixedly connected to the outer side wall of the side branch pipe 100.

[0075] The inner ring wall of the positioning ring 200 is provided with a first guide groove 210 and a second guide groove 230, both of which extend along the circumference of the positioning ring 200.

[0076] The first guide groove 210 and the second guide groove 230 are located on the same circumference and are spaced apart along the circumference of the positioning ring 200.

[0077] The inner wall of the first guide channel 210 is provided with a first opening 220. The first opening 220 extends radially along the positioning ring 200 and penetrates the positioning ring 200. The first opening 220 also penetrates the side wall of the side branch pipe 100 and communicates with the side branch pipe 100.

[0078] The inner wall of the second guide channel 230 is provided with a second opening 240, which extends radially along the positioning ring 200 and penetrates to the outer ring wall of the positioning ring 200. The outer end of the second opening 240 is used to communicate with a sewage collection container (not shown in the figure).

[0079] Wastewater collection containers are used to collect wastewater samples, which are then analyzed. The content of solid impurities in the wastewater samples can be used to determine whether the filtration effect of the filter is up to standard. When the content of solid impurities in the wastewater sample exceeds the standard, it indicates that the filtration effect of the filter has decreased, and maintenance of the filter is required.

[0080] The rotating wheel 300 is rotatably fitted into the positioning ring 200. The rotating wheel 300 and the positioning ring 200 are coaxially arranged, and the rotation axis of the rotating wheel 300 coincides with the central axis of the positioning ring 200.

[0081] The outer ring wall of the rotor 300 fits against the inner ring wall of the positioning ring 200 and the two rotate in a sealed manner. In other words, the outer ring wall of the rotor 300 can seal the first guide groove 210 and the second guide groove 230.

[0082] The outer ring wall of the rotating wheel 300 has a collection hole 310, which is arranged radially along the rotating wheel 300. A sliding member 320 is fitted inside the collection hole 310. The sliding member 320 is slidably fitted in the collection hole 310 along its length. The sliding member 320 is driven by a drive mechanism.

[0083] As the rotating wheel 300 rotates along the positioning ring 200, the collecting hole 310 can periodically communicate with the first guide groove 210 and the second guide groove 230. The distance between the first guide groove 210 and the second guide groove 230 is greater than or equal to the diameter of the collecting hole 310. That is, at any given time, the collecting hole 310 is connected to at most one of the first guide groove 210 or the second guide groove 230.

[0084] During the rotation of the rotating wheel 300 along the positioning ring 200, the collecting hole 310 has a first working state and a second working state.

[0085] When the collection hole 310 is in the first working state, the collection hole 310 is connected to the first guide channel 210. In this state, the drive mechanism is used to drive the sliding member 320 from the end of the collection hole 310 near the positioning ring 200 to the end away from the positioning ring 200, so that the sewage in the side branch pipe 100 enters the collection hole 310.

[0086] When the collection hole 310 is in the second working state, the collection hole 310 is connected to the second guide channel 230. In this state, the driving mechanism is used to drive the sliding member 320 from the end of the collection hole 310 away from the positioning ring 200 to the end of the collection hole 310 close to the positioning ring 200, so that the sewage in the collection hole 310 enters the second opening 240, thereby enabling the sewage collection container to complete the collection of sewage samples.

[0087] For the same collection hole 310, as the rotating wheel 300 rotates, the collection hole 310 can switch between a first working state and a second working state.

[0088] With this design, when it is necessary to sample the sewage at the outlet of the filtration device, the rotating wheel 300 is controlled to rotate relative to the positioning ring 200, so that the collection hole 310 switches between the first working state and the second working state, and the sewage sample can be collected smoothly, which is simple and convenient.

[0089] Meanwhile, this solution utilizes the positioning ring 200 and the rotating wheel 300 to isolate the side branch pipe 100 and the second opening 240. The collection hole 310 is switched between the first and second operating states solely by rotating the rotating wheel 300, thus intermittently transporting the sewage in the side branch pipe 100 to the sewage collection container. When the rotating wheel 300 stops rotating, the connection between the side branch pipe 100 and the second opening 240 is completely blocked, significantly reducing the probability of accidental leakage of sewage from the side branch pipe 100.

[0090] In addition, by using the collection hole 310 to transfer sewage samples from the side branch pipe 100 to the sewage collection container, the amount of sewage samples collected can be better controlled, effectively reducing secondary pollution caused by excessive release of sewage samples.

[0091] Overall, the sampling device for evaluating the filtration effect of wastewater provided in this application embodiment can conveniently take samples at the outlet of the filtration device, which is simple and convenient, has low dependence on manual labor, can effectively reduce the risk of wastewater leakage, and is safer.

[0092] Please combine Figures 1-5 In this embodiment, the collection hole 310 extends through the axial direction of the rotating wheel 300 to one side wall of the rotating wheel 300. A gap is left between the end of the collection hole 310 away from the positioning ring 200 and the central axis of the rotating wheel 300.

[0093] A ring-shaped component 330 is provided at one end of the collection hole 310 near the positioning ring 200. The ring-shaped component 330 is coaxially arranged with the collection hole 310, and the outer ring wall of the ring-shaped component 330 is attached to and fixedly connected with the hole wall of the collection hole 310.

[0094] A telescopic tube 340 is provided inside the collection hole 310. The telescopic tube 340 is coaxially arranged with the annular member 330. One end of the telescopic tube 340 is fixedly connected to the annular member 330, and the other end of the telescopic tube 340 is fixedly connected to the side surface of the sliding member 320 near the annular member 330. That is, the end of the telescopic tube 340 away from the positioning ring 200 is closed by the sliding member 320. The positioning ring 200, the telescopic tube 340, and the sliding member 320 together form a space for containing sewage. That is, sewage can enter the telescopic tube 340 through the positioning ring 200, but the sewage entering the telescopic tube 340 will not enter the area between the outer wall of the telescopic tube 340 and the inner wall of the collection hole 310.

[0095] A groove 350 is formed in the middle of the side wall of the rotating wheel 300. In this embodiment, the cavity of the groove 350 is cylindrical, and the groove 350 is coaxially arranged with the rotating wheel 300. The end of the collecting hole 310 away from the positioning ring 200 extends into the groove 350 and communicates with the groove 350.

[0096] The drive mechanism includes: a driver (not shown in the figure), a drive shaft 400, and a first control arm 410.

[0097] The drive shaft 400 is driven by a driver. The drive shaft 400 is eccentrically positioned relative to the rotating wheel 300. The rotation axis of the drive shaft 400 is parallel to and spaced apart from the rotation axis of the rotating wheel 300.

[0098] The first control arm 410 is fixedly connected to the drive shaft 400 and is arranged radially along the drive shaft 400. The end of the first control arm 410 away from the drive shaft 400 has a mating part 411. The first control arm 410 is spaced apart from the side wall of the rotating wheel 300, and the mating part 411 is located on the side of the first control arm 410 closer to the rotating wheel 300.

[0099] There are multiple collection holes 310, which are evenly spaced along the circumference of the rotating wheel 300.

[0100] When the drive shaft 400 rotates, the first control arm 410 rotates accordingly, and the mating part 411 can move between two adjacent collection holes 310 and grooves 350.

[0101] Specifically, exemplary, with Figure 2The state shown is the initial state. At this time, the collection hole 310 corresponding to the mating part 411 is connected to the first guide channel 210, and the collection hole 310 is located at the end of the first guide channel 210 away from the second guide channel 230. The mating part 411 is located at the end of the collection hole 310 away from the positioning ring 200, and the mating part 411 is about to leave the collection hole 310. Another collection hole 310 adjacent to the collection hole 310 where the mating part 411 is located is connected to the second guide channel 230 at this time, and is located at the end of the second guide channel 230 away from the first guide channel 210.

[0102] Using the driver to control the drive shaft 400 along Figure 2 Rotating clockwise as shown in the viewpoint, the mating part 411 will move away from the current collection hole 310 and into the groove 350, as... Figure 6 As shown, the rotating wheel 300 remains stationary at this time. As the drive shaft 400 continues to rotate, the mating part 411 will enter from the groove 350 into the end of another collection hole 310 adjacent to the previous collection hole 310, away from the positioning ring 200, as shown. Figure 7 As shown. At this time, as long as the drive shaft 400 rotates further, the mating part 411 will move further into the current collection hole 310, while the drive wheel 300 rotates clockwise. During the rotation of the drive wheel 300 driven by the mating part 411, the mating part 411 will gradually move towards the end of the current collection hole 310 near the positioning ring 200, until it reaches the end of the current collection hole 310 near the positioning ring 200, as shown. Figure 8 As shown.

[0103] In particular, when in Figure 8 In the state shown, the distance between the mating part 411 and the positioning ring 200 reaches a minimum value. In this state, the collecting hole 310 is just disconnected from the second guide groove 230 and is about to connect with the first guide groove 210. That is to say, in this state, the gap between the collecting hole 310 and the first guide groove 210 and the second guide groove 230 corresponds.

[0104] As the drive shaft 400 continues to rotate, the mating part 411, while driving the rotating wheel 300 to rotate, will move back towards the end of the collection hole 310 away from the positioning ring 200. After the rotating wheel 300 rotates a certain angle, the mating part 411 will return to the end of the collection hole 310 away from the positioning ring 200, which is equivalent to returning to a similar position. Figure 2 The state shown is different except that the collection hole 310 corresponding to the mating part 411 is different now.

[0105] By repeating this process, the mating part 411 can intermittently drive the rotary wheel 300.

[0106] During the above process, the mating component 411 can control the sliding component 320 while driving the rotating wheel 300 to rotate. Specifically, when the mating component 411 moves towards the end of the collection hole 310 away from the positioning ring 200, the sliding component 320 can move along the end of the collection hole 310 away from the positioning ring 200. Under the action of water pressure, the sewage in the side branch pipe 100 can enter the collection hole 310 through the first opening 220 and the first guide groove 210, and push the sliding component 320 towards the end of the collection hole 310 away from the positioning ring 200, so that the collection hole 310 collects sewage. When the mating part 411 moves towards the end of the collection hole 310 near the positioning ring 200, the mating part 411 can push the sliding part 320 towards the end of the collection hole 310 near the positioning ring 200, thereby pushing the sewage in the collection hole 310 into the second guide channel 230, so that the sewage in the collection hole 310 enters the sewage collection container through the second guide channel 230 and the second opening 240, and the sewage in the collection hole 310 is discharged into the sewage collection container.

[0107] In other words, the first control arm 410 can not only drive the rotating wheel 300, but also coordinate and control the movement of the sliding member 320 to achieve the purpose of transferring sewage samples.

[0108] Please combine Figure 9 and Figure 10 Optionally, the telescopic tube 340 can be a corrugated pipe, but is not limited to this. When the telescopic tube 340 is a corrugated pipe, a telescopic rod 360 is also fixedly connected to the side of the sliding member 320 near the annular member 330. The telescopic rod 360 is arranged along the length direction of the collecting hole 310, and the other end of the telescopic rod 360 is fixedly connected to the annular member 330. The telescopic rod 360 is located outside the telescopic tube 340, on the side of the telescopic tube 340 near the first control arm 410, to prevent the telescopic tube 340 from deforming and bending outwards from the collecting hole 310, thereby ensuring the stability of the telescopic tube 340 during the telescopic process.

[0109] Please combine Figure 11 Furthermore, the drive mechanism also includes a second control arm 420.

[0110] The second control arm 420 is fixedly connected to the drive shaft 400 and arranged radially along the drive shaft 400. The first control arm 410 and the second control arm 420 are respectively located on opposite sides of the drive shaft 400.

[0111] The end wall of the second control arm 420 away from the drive shaft 400 is an arc-shaped wall 421, and the central axis of the cylinder corresponding to the arc-shaped wall 421 is set to coincide with the rotation axis of the drive shaft 400.

[0112] The side wall of the rotating wheel 300 is also fixedly connected with a limiting block 370. The number of limiting blocks 370 is the same as the number of collection holes 310. The limiting blocks 370 are evenly spaced along the circumference of the rotating wheel 300.

[0113] The side wall of the limiting block 370 near the rotation axis of the rotating wheel 300 is arc-shaped, and the curvature of the side wall of the limiting block 370 near the rotation axis of the rotating wheel 300 is the same as the curvature of the arc-shaped wall 421.

[0114] When the mating part 411 is in the groove 350, the arc-shaped wall 421 is in contact with the side wall of the limiting block 370 near the rotation axis of the rotating wheel 300. When the mating part 411 enters the collection hole 310, the arc-shaped wall 421 separates from the side wall of the limiting block 370 near the rotation axis of the rotating wheel 300.

[0115] With this design, when the mating part 411 leaves the collection hole 310 and enters the groove 350, although the mating part 411 cannot restrict the rotating wheel 300 in this state, the second control arm 420 uses the arc wall 421 to fit against the limiting block 370. The second control arm 420 restricts the rotation of the rotating wheel 300 through the limiting block 370, thereby preventing the rotating wheel 300 from rotating accidentally and ensuring that the mating part 411 can accurately re-enter the collection hole 310, thereby ensuring that the mating part 411 can continuously and smoothly drive the rotating wheel 300.

[0116] The length of the first control arm 410 is greater than the length of the second control arm 420, and the length of the first control arm 410 is less than the radius of the turntable 300.

[0117] In this embodiment, there are three collection holes 310. Correspondingly, there are also three limiting blocks 370.

[0118] The sampling device also includes: a processor (not shown in the figure), a distance sensor 510, and a detection circuit (not shown in the figure).

[0119] Both the distance sensor 510 and the detection circuit are electrically connected to the processor.

[0120] The distance sensor 510 is located at the end of the first control arm 410 away from the drive shaft 400, and the distance sensor 510 is oriented towards the side away from the drive shaft 400.

[0121] The arc-shaped wall 421 is embedded with a first conductive terminal 520 and a second conductive terminal 530, which are spaced apart. The first conductive terminal 520 is electrically connected to one pole of the detection circuit, and the second conductive terminal 530 is electrically connected to the other pole of the detection circuit. Both the first conductive terminal 520 and the second conductive terminal 530 extend to the surface of the arc-shaped wall 421.

[0122] A conductive core 540 is embedded in the side wall of the limiting block 370 near the rotation axis of the rotating wheel 300. The main body of the conductive core 540 is built into the limiting block 370, and both ends of the conductive core 540 extend to the surface of the side wall of the limiting block 370 near the rotation axis of the rotating wheel 300.

[0123] When the collection hole 310 located on the side of the central axis of the rotating wheel 300 away from the drive shaft 400 is parallel to the first control arm 410, as Figure 6 In this state, the mating member 411 is located in the middle of the groove 350, and the distance sensor 510 faces the collection hole 310 (denoted as: object collection hole 310) on the side of the rotating wheel 300 away from the drive shaft 400. At this time, the distance sensor 510 is oriented along the length direction of the object collection hole 310, that is, the distance sensor 510 can detect the distance between itself and the sliding member 320 in the object collection hole 310. Correspondingly, in this state, the first conductive terminal 520 is electrically connected to one end of the conductive core 540, and the second conductive terminal 530 is electrically connected to the other end of the conductive core 540. That is, the first conductive terminal 520 and the second conductive terminal 530 are indirectly connected through the conductive core 540, thereby closing the detection circuit.

[0124] As the drive shaft 400 continues to rotate, the first conductive terminal 520 and the second conductive terminal 530 will disconnect from the conductive core 540. That is to say, during the rotation of the drive shaft 400, the first conductive terminal 520 and the second conductive terminal 530 will only be connected to the conductive core 540 once per revolution of the drive shaft 400, and this connection is instantaneous.

[0125] During the collection of wastewater samples, the distance sensor 510 remains continuously activated. When the processor detects that the detection circuit is closed, it records the distance value detected by the distance sensor 510. Since the relative positional relationship between the drive shaft 400 and the rotating wheel 300 is fixed, this distance value can be used to determine the specific position of the sliding member 320 in the object collection hole 310. Therefore, based on the specific position of the sliding member 320 in the object collection hole 310, the approximate volume of wastewater entering the object collection hole 310 can be determined, which facilitates more reasonable control of the amount of wastewater sample collected.

[0126] It should be noted that, in this embodiment, the inner wall of the collection hole 310 is also provided with a groove 380. The groove 380 extends along the length of the collection hole 310, and a gap is left between the groove 380 and the two ends of the collection hole 310. Specifically, a gap is left between the groove 380 and the positioning ring 200, and a gap is also left between the groove 380 and the groove 350. Correspondingly, a slider 321 is fixedly connected to the sliding member 320, and the slider 321 slidably engages in the groove 380.

[0127] When the distance between the slider 320 and the positioning ring 200 reaches its minimum value (corresponding to...) Figure 8 (As shown in the diagram), slider 321 is engaged with the end of slide groove 380 near positioning ring 200. When telescopic tube 340 is filled with sewage, slider 321 is engaged with the end of slide groove 380 away from positioning ring 200. With this design, slider 320 will not come out of collection hole 310.

[0128] In this embodiment, it should be noted that the slider 320 is damped and slides into the collection hole 310. That is, when the slider 320 moves within the collection hole 310, there is a certain resistance, and the magnitude of this resistance can be flexibly adjusted according to actual needs.

[0129] Specifically, when the water pressure in the branch pipe 100 is high, the sewage entering the expansion pipe 340 will exert a strong thrust on the sliding member 320. At this time, as the drive shaft 400 rotates, since the mating member 411 gradually moves towards the end of the collection hole 310 away from the positioning ring 200, although the sewage exerts a strong thrust on the sliding member 320, the sliding member 320 can only adhere to the mating member 411 and move gradually towards the end of the collection hole 310 away from the positioning ring 200 with the mating member 411. This avoids the sliding member 320 suddenly hitting the end of the collection hole 310 away from the positioning ring 200, thus avoiding mechanical damage and reducing the damage rate.

[0130] When the water pressure in the side branch pipe 100 is low, due to the resistance encountered when the sliding member 320 slides, it may not continuously move in contact with the mating member 411. In other words, under the action of resistance, when the sliding member 320 is pushed by the sewage, its movement speed may be lower than that of the mating member 411. After the mating member 411 moves towards the end of the collection hole 310 away from the positioning ring 200 and leaves the collection hole 310 and enters the groove 350, the sliding member 320 may not have yet moved to the end of the collection hole 310 away from the positioning ring 200. That is, the slider 321 has not yet abutted against the end of the groove 380 away from the positioning ring 200. Since the drive shaft 400 will continue to move, but for a period of time, the mating member 411 moves within the groove 350, sewage can continue to enter the collection hole 310 before the mating member 411 enters the next collection hole 310 and continues to drive the rotating wheel 300 to rotate. In other words, a certain buffer time is reserved for sewage to enter the collection hole 310. This buffer time can be adjusted by adjusting the resistance of the sliding member 320 and the rotation speed of the drive shaft 400. In this way, the telescopic tube 340 can fully collect sewage samples and ensure the collection efficiency of sewage samples.

[0131] This design allows the sampling device to function well under different water pressures.

[0132] It is particularly important to note that the water pressure in the branch pipe 100 is determined by the water pressure in the output pipe 2000. When the water pressure in the branch pipe 100 is abnormally low, even if a buffer time is provided for the sewage to enter the telescopic pipe 340, the sewage may not yet fill the telescopic pipe 340 when the pump moves into the next collection hole 310 and continues to drive the rotating wheel 300. That is, the slider 321 has not yet moved to the end of the slide groove 380 away from the positioning ring 200. At this time, the slider 320 in the collection hole 310 has not moved to the furthest position from the positioning ring 200. When the detection circuit is closed, the distance value detected by the distance sensor 510 will be too large.

[0133] Therefore, the distance value detected by the distance sensor 510 when the detection circuit is closed can also be used to determine whether the water pressure in the side branch pipe 100 is abnormally low.

[0134] If the water pressure in the branch pipe 100 is detected to be abnormally low, it indicates that the filter device may be significantly clogged. In this case, it is necessary to troubleshoot the filter device according to the actual situation.

[0135] The degree of water pressure anomaly can be reflected by adjusting the resistance of the sliding member 320 and the rotational speed of the drive shaft 400 (the length of the buffer time). The distance value detected by the distance sensor 510 when the detection circuit is closed can be changed by adjusting the resistance of the sliding member 320 and the rotational speed of the drive shaft 400 (the length of the buffer time).

[0136] In this embodiment, the mating part 411 is cylindrical, and the diameter of the mating part 411 is adapted to the inner diameter of the collection hole 310.

[0137] To make the sampling device easier to clean, the sampling device also includes: a cleaning agent inlet pipe 610, a cleaning agent outlet pipe 620, an air inlet pipe 630, and an air outlet pipe 640.

[0138] Control valves 650 are provided at both ends of the side branch pipe 100, the cleaning agent inlet pipe 610, the cleaning agent outlet pipe 620, the air inlet pipe 630, and the air outlet pipe 640.

[0139] The cleaning agent inlet pipe 610 and the air inlet pipe 630 are both connected to one end of the branch pipe 100. Along the flow direction of sewage in the branch pipe 100, the cleaning agent inlet pipe 610 and the air inlet pipe 630 are both located downstream of the control valve 650 at the inlet end of the branch pipe 100.

[0140] The cleaning agent output pipe 620 and the air output pipe 640 are both connected to the other end of the branch pipe 100. Along the flow direction of sewage in the branch pipe 100, the cleaning agent output pipe 620 and the air output pipe 640 are both located upstream of the control valve 650 at the outlet end of the branch pipe 100.

[0141] When not sampling, all control valves 650 are closed.

[0142] During sampling, open the control valves 650 at both ends of the side branch pipe 100 and close the other control valves 650.

[0143] During cleaning, close the control valves 650 at both ends of the branch pipe 100. First, open the control valves 650 of the cleaning agent inlet pipe 610 and the cleaning agent outlet pipe 620, and introduce cleaning agent into the branch pipe 100 through the cleaning agent inlet pipe 610. The cleaning agent can be water, but is not limited to water. During cleaning, use the driver to drive the drive shaft 400 to rotate, thereby using the cleaning agent to thoroughly clean the sampling device. At this time, a portion of the cleaning agent will be discharged from the second opening 240.

[0144] After the cleaning agent has finished cleaning, close the control valves 650 of the cleaning agent inlet pipe 610 and the cleaning agent outlet pipe 620. At this time, the control valves 650 of the air inlet pipe 630 and the air outlet pipe 640 can be opened as needed. Air is continuously supplied to the side branch pipe 100 through the air inlet pipe 630, and the drive shaft 400 is driven to rotate by the driver, so that the sampling device is fully dried by the air. At this time, some air will be discharged from the second opening 240.

[0145] Furthermore, the side branch pipe 100 is set horizontally, the positioning ring 200 is set directly above the side branch pipe 100, and the first opening 220 is set perpendicular to the central axis of the side branch pipe 100.

[0146] With this design, when the control valves 650 at both ends of the side branch pipe 100 are closed, the sewage in the side branch pipe 100 will enter a depressurized state and will no longer actively enter the telescopic pipe 340 through the first opening 220 and the first guide channel 210. In this state, the drive shaft 400 continues to rotate a certain number of times, which can send all the sewage samples in the collection holes 310 into the sewage collection container.

[0147] At the same time, after the control valves 650 at both ends of the side branch pipe 100 are closed, the distance value detected by the distance sensor 510 when the detection circuit is closed can be used to determine whether all the sewage samples in the collection holes 310 have been fully discharged.

[0148] In summary, the sampling device for evaluating the filtration effect of wastewater provided in this application embodiment can conveniently take samples at the outlet of the filtration device, which is simple and convenient, has low dependence on manual labor, can effectively reduce the risk of wastewater leakage, and is safer.

[0149] 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 evaluating the filtration effect of wastewater, characterized in that, include: Side branch pipe, positioning ring, rotating wheel and drive mechanism; The side branch pipe has a first end and a second end, both of which are used to communicate with the output pipe of the filter device. Along the flow direction of the output pipe, the second end is located downstream of the first end. The positioning ring is fixedly connected to the outer wall of the side branch pipe; the inner ring wall of the positioning ring is provided with a first guide groove and a second guide groove, both of which extend circumferentially along the positioning ring; the first guide groove and the second guide groove are spaced apart along the circumferential direction of the positioning ring; the inner wall of the first guide groove is provided with a first opening, which penetrates the positioning ring and further penetrates the side wall of the side branch pipe; the inner wall of the second guide groove is provided with a second opening, which penetrates to the outer ring wall of the positioning ring; the second opening is used to communicate with a sewage collection container; The rotating wheel is rotatably fitted into the positioning ring, and the outer ring wall of the rotating wheel is in contact with the inner ring wall of the positioning ring and the two are rotatably sealed. The outer ring wall of the rotating wheel is provided with a collection hole, which is arranged radially along the rotating wheel. A sliding member is slidably fitted inside the collection hole; the sliding member is driven by the driving mechanism. As the rotating wheel rotates along the positioning ring, the collecting hole has a first working state and a second working state. When the collection hole is in the first working state, the collection hole is connected to the first guide channel, and the driving mechanism is used to drive the sliding member from the end of the collection hole near the positioning ring to the end away from the positioning ring, so that the sewage in the side branch pipe enters the collection hole. When the collection hole is in the second working state, the collection hole is connected to the second guide channel, and the driving mechanism is used to drive the sliding member from the end of the collection hole away from the positioning ring to the end of the collection hole close to the positioning ring, so that the sewage in the collection hole enters the second opening.

2. The sampling device for evaluating wastewater filtration effect according to claim 1, characterized in that, The collection hole extends through the axial direction of the rotating wheel to one side wall of the rotating wheel; a ring-shaped part is provided at one end of the collection hole near the positioning ring, the ring-shaped part is coaxially arranged with the collection hole, and the outer ring wall of the ring-shaped part is attached to and fixedly connected with the hole wall of the collection hole; A telescopic tube is provided inside the collection hole; one end of the telescopic tube is fixedly connected to the annular component, and the other end is fixedly connected to the sliding component. A groove is provided in the middle of the side wall of the rotating wheel, and the collection hole communicates with the groove; The drive mechanism includes: a driver, a drive shaft, and a first control arm; The drive shaft is driven by the driver, the drive shaft is eccentrically arranged relative to the wheel, and the rotation axis of the drive shaft is parallel to the rotation axis of the wheel. The first control arm is fixedly connected to the drive shaft and arranged radially along the drive shaft, and the end of the first control arm away from the drive shaft has a mating part; The collection holes are multiple, and the multiple collection holes are evenly spaced along the circumference of the rotating wheel; When the drive shaft rotates, the mating member can enter the collection hole from the end of the collection hole away from the positioning ring in the groove, thereby driving the rotating wheel to rotate. At the same time, the sliding member is driven from the end of the collection hole away from the positioning ring to the end closer to the positioning ring, so that the sewage in the collection hole enters the second opening. When the drive shaft continues to rotate, the mating member continues to drive the rotating wheel to rotate. The mating member moves from the end of the collection hole close to the positioning ring to the end away from the positioning ring, and enters the groove from the end of the collection hole away from the positioning ring.

3. The sampling device for evaluating wastewater filtration effect according to claim 2, characterized in that, The drive mechanism further includes: a second control arm; The second control arm is fixedly connected to the drive shaft and arranged radially along the drive shaft, and the first control arm and the second control arm are respectively located on opposite sides of the drive shaft; The end wall of the second control arm away from the drive shaft is an arc-shaped wall, and the central axis of the cylinder corresponding to the arc-shaped wall is set to coincide with the rotation axis of the drive shaft; The side wall of the rotating wheel is also fixedly connected to a limiting block. The number of the limiting blocks is the same as the number of the collecting holes. The limiting blocks are evenly spaced along the circumference of the rotating wheel. The side wall of the limiting block near the rotation axis of the rotating wheel is arc-shaped, and the curvature of the side wall of the limiting block near the rotation axis of the rotating wheel is the same as the curvature of the arc-shaped wall. When the mating part is located in the groove, the arc-shaped wall is in contact with the side wall of the limiting block near the rotation axis of the rotating wheel.

4. The sampling device for evaluating wastewater filtration effect according to claim 3, characterized in that, The number of collection holes is 3; The sampling device also includes: a processor, a distance sensor, and a detection circuit; Both the distance sensor and the detection circuit are electrically connected to the processor; The distance sensor is located at the end of the first control arm away from the drive shaft, and the distance sensor is oriented towards the side away from the drive shaft; The arc-shaped wall is embedded with a first conductive terminal and a second conductive terminal, which are spaced apart. The first conductive terminal is electrically connected to one pole of the detection circuit, and the second conductive terminal is electrically connected to the other pole of the detection circuit. A conductive core is embedded in the side wall of the limiting block near the rotation axis of the rotating wheel, and both ends of the conductive core extend to the surface of the side wall of the limiting block near the rotation axis of the rotating wheel. When the collecting hole located on the side of the central axis of the rotating wheel away from the drive shaft is parallel to the first control arm, the sliding member of the distance sensor facing the collecting hole, the first conductive terminal and the second conductive terminal are electrically connected to the two ends of the conductive core, so as to close the detection circuit; When the detection circuit is closed, the processor is used to determine the amount of sewage in the corresponding collection hole based on the detection value of the distance sensor.

5. The sampling device for evaluating wastewater filtration effect according to claim 4, characterized in that, The sliding member has a damped sliding fit with the collection hole; When the detection circuit is closed, the processor is also used to determine whether the filtration effect of the filtration device is normal based on the detection value of the distance sensor.

6. The sampling device for evaluating wastewater filtration effect according to claim 2, characterized in that, The mating component is cylindrical.

7. The sampling device for evaluating wastewater filtration effect according to claim 3, characterized in that, The length of the first control arm is greater than the length of the second control arm, and the length of the first control arm is less than the radius of the wheel.

8. The sampling device for evaluating wastewater filtration effect according to claim 1, characterized in that, The sampling device further includes: a cleaning agent inlet pipe, a cleaning agent outlet pipe, an air inlet pipe, and an air outlet pipe; Control valves are provided at both ends of the side branch pipe, the cleaning agent inlet pipe, the cleaning agent outlet pipe, the air inlet pipe, and the air outlet pipe; Both the cleaning agent inlet pipe and the air inlet pipe are connected to one end of the side branch pipe. Along the flow direction of the sewage in the side branch pipe, both the cleaning agent inlet pipe and the air inlet pipe are located downstream of the control valve at the inlet end of the side branch pipe. Both the cleaning agent output pipe and the air output pipe are connected to the other end of the bypass pipe. Along the flow direction of sewage in the bypass pipe, both the cleaning agent output pipe and the air output pipe are located upstream of the control valve at the outlet end of the bypass pipe.

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