Automatic sewage sampling and detecting device

Abstract

The invention relates to the technical field of sewage detection, in particular to an automatic sewage sampling and detecting device which comprises a cabinet body, an infusion pump arranged in the cabinet body and a plurality of sample containers, a sliding frame is slidably mounted in the cabinet body, a detection bottle and a liquid outlet head are arranged on the sliding frame, a pH testing probe is arranged in the detection bottle, a driving mechanism drives the sliding frame to slide, and the liquid outlet head is arranged on the sliding frame. The infusion pump, the detection bottle and the liquid outlet head are communicated through a pipeline, the control mechanism starts the driving mechanism to drive the sliding frame to move to be sequentially opposite to the openings of the sample containers, and the infusion pump is started to pump sewage into the sample containers. A pH test probe is embedded in the detection bottle, and the detection bottle is connected with the infusion pump through a hose, so that sewage enters the detection bottle and flows to the sample container through the overflow hole while being pumped into the sample container, pH value data is collected in real time and fed back to the control mechanism in real time, pollution or parameter distortion caused by time lapse is avoided, and the detection accuracy is improved. And the real-time demand on dynamic data in the sewage treatment process is met.

Description

Technical Field

[0001] This application relates to the technical field of sewage detection, and in particular to an automatic sewage sampling and detection device. Background Art

[0002] Sewage refers to the discharged water from life and production that is contaminated to a certain extent. Water that has lost its original use function is simply called sewage. It is mainly the water used in daily life, which contains more organic matter and is relatively easy to treat. From the perspective of the source of sewage, sewage can be defined as the liquid or water carrying waste mixed with groundwater, surface water, snowstorm, etc. discharged from residential buildings, institutions, commercial areas or industrial zones. Sewage has many categories, and accordingly, there are many technologies and processes to reduce the impact of sewage on the environment. According to the source of sewage, sewage can be divided into four categories: industrial wastewater, domestic sewage, commercial sewage and surface runoff. Sewage detection usually refers to the detection of harmful substances in sewage in order to evaluate its impact on the environment and public health. The five general items of conventional sewage detection usually include chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total suspended solids (TSS), ammonia nitrogen, and pH value.

[0003] The existing sampling device for sewage treatment detection includes a support plate and a buffer bin. A plurality of samplers are arranged on the buffer bin. One end of the sampling pipe far away from the buffer bin is installed with a T-shaped pipe, and a switching unit is arranged on the T-shaped pipe. The sewage around the sampling pipe is pumped into the sampling pipe through the T-shaped pipe, so as to realize the synchronous pumping of multiple sampling pipes, thereby reducing the sampling times. Although this device can realize multiple samplings, it is necessary to transfer the sample to an independent detection device for pH value detection after sampling, resulting in the separation of the detection process and the sampling process, unable to provide real-time feedback of key parameters, and difficult to meet the immediate demand for dynamic data in the sewage treatment process, resulting in a lag in the adjustment of subsequent sewage treatment processes. Summary of the Invention

[0004] In order to solve the problems of the separation of the detection process and the sampling process, the inability to provide real-time feedback of key parameters, the difficulty in meeting the immediate demand for dynamic data in the sewage treatment process, and the resulting lag in the adjustment of subsequent sewage treatment processes, this application provides an automatic sewage sampling and detection device.

[0005] An automatic sewage sampling and detection device provided by this application adopts the following technical solutions: An automatic sewage sampling and detection device, comprising: A cabinet, the internal space of the cabinet is divided into at least two layers in the vertical direction; A liquid extraction pump, arranged in the cabinet, the liquid inlet of the liquid extraction pump is communicated with a liquid extraction pipe; A plurality of sample containers, arranged in sequence along the same horizontal direction in the lower layer space of the cabinet; A sliding rack, which is slidably installed in the cabinet along the arrangement direction of a plurality of the sample containers; A detection bottle, which is arranged on the sliding rack. The detection bottle is provided with a liquid inlet hole and an overflow hole. A pH test probe is arranged inside the detection bottle. The liquid inlet hole is connected to the liquid outlet of a liquid extraction pump through a hose; A liquid outlet head, which is arranged on the sliding rack and is communicated with the overflow hole; A driving mechanism, which drives the sliding rack to slide; and A control mechanism, which is electrically connected to the liquid extraction pump, the driving mechanism, and the pH test probe. The control mechanism includes a control module, which is used to respond to the user's start operation. After starting the driving mechanism to drive the sliding rack to move to a preset distance, the liquid outlet head is made to face the opening of the first sample container, the driving mechanism is stopped, the liquid extraction pump is started to pump sewage into the sample container. After a first preset time, the liquid extraction pump is stopped, and then the driving mechanism is started to drive the sliding rack to move to face the opening of the next sample container, and the operation is repeated until sewage is pumped into the last sample container, and then the liquid extraction pump is stopped.

[0006] Optionally, it further includes: A recovery box. The side wall of the upper part of the recovery box is a double-layer structure inside and outside to form a diversion cavity. The recovery box is provided with a recovery hole communicated with the diversion cavity. One end of a recovery hose is connected to the recovery hole, and the other end of the recovery hose is used to be detachably connected to the liquid outlet head. A plurality of recovery ports are arranged at intervals along the circumferential direction on the inner layer of the side wall of the recovery box; A cleaning box, which is located inside the recovery box and below the recovery port, and is used to store cleaning liquid; The liquid extraction pipe is a telescopic pipe, which includes an outer sleeve pipe and a retractable pipe slidably installed inside the outer sleeve pipe. The top of the cleaning box is provided with a first insertion hole for the retractable pipe to insert. The top of the cleaning box abuts against the outer sleeve pipe to seal the first insertion hole. The top of the recovery box is provided with a second insertion hole for the outer sleeve pipe to insert. A limit block is arranged on the outer sleeve pipe and abuts against the top of the recovery box.

[0007] Optionally, the detection bottle includes: A bottle body. The side wall of the bottle body is a double-layer structure with an interval inside and outside to form a liquid containing cavity. The liquid inlet hole is arranged at the top of the bottle body and is communicated with the liquid containing cavity. A plurality of liquid outlet holes are arranged at intervals along the circumferential direction on the inner layer of the side wall of the bottle body, and the liquid outlet holes face the pH test probe; A rotating plate. A communication port is opened on the inner side wall at the bottom of the bottle body. The overflow hole is arranged on the rotating plate and is located at an eccentric position of the rotating plate. The upper end of the rotating plate is hollow and is communicated with the overflow hole. The rotating plate is rotatably installed in the bottle body around the axis through a rotating shaft to block or open the communication port. The middle part of the rotating shaft is penetrated, one end is communicated with the inside of the rotating plate, and the other end is communicated with the liquid outlet head.

[0008] Optionally, the top of the cleaning tank is a diversion cone with a gradually increasing diameter from top to bottom. The diversion cone is located outside the retracted pipe and its upper end abuts against the bottom of the outer sleeve.

[0009] Optionally, a counterweight is provided at one end of the outer sleeve away from the limit block.

[0010] Optionally, a heat preservation layer is provided on the inner wall of the cabinet.

[0011] Optionally, a sound insulation layer is provided around the liquid extraction pump, and a sound sensor is provided on the sliding rack near the sample container. The sound sensor is used to detect the sound decibel when the sample container receives sewage. The control mechanism further includes a judgment module, and the judgment module is used to judge whether the selected target mode belongs to the unified mode or the difference mode in response to the user's selection operation. The control module is used to turn off the sound sensor if the target mode is the unified mode; if the target mode is the difference mode, the sound sensor is turned on while the liquid extraction pump is turned on. The first preset time is from the time when the liquid extraction pump is turned on to the time when the sound decibel reaches the preset decibel.

[0012] Optionally, the control module is further used to start the driving mechanism after the liquid extraction pump stops for the second preset time.

[0013] Optionally, the control module is further used to start the driving mechanism to drive the sliding rack back to the initial position after the last sample container is pumped with sewage and the liquid extraction pump stops.

[0014] Optionally, the control mechanism further includes a transmission module. The transmission module is electrically connected to the pH test probe and communicates with the cloud server, and is used to transmit the sewage pH data measured by the pH test probe to the cloud server.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: The pH test probe is embedded in the detection bottle and connected to the liquid extraction pump through a hose, so that while the sewage is pumped into the sample container, the sewage enters the detection bottle and flows to the sample container through the overflow hole. The pH value data is collected in real time and fed back to the control mechanism in real time, avoiding pollution or parameter distortion caused by the passage of time and meeting the immediate demand for dynamic data in the sewage treatment process; the coordinated operation of the driving mechanism and the control module accurately controls the displacement of the sliding rack and the liquid extraction timing, ensuring that multi-container sampling and dynamic pH value monitoring are completed synchronously in a single operation, significantly improving the detection efficiency and data timeliness, and providing a reliable basis for the immediate adjustment of the sewage treatment process. When the liquid extraction pump injects sewage into the detection bottle through the liquid inlet hole, the liquid continuously flows in until it reaches the height of the overflow hole. At this time, the excess sewage naturally flows into the liquid outlet head through the overflow hole and finally enters the corresponding sample container below. By restricting the liquid level height, the overflow hole ensures that the sewage liquid level in the detection bottle is always stable at the set height, and the pH test probe is always completely immersed in the sewage, avoiding measurement data distortion caused by liquid level fluctuations. Description of the Drawings

[0016] Figure 1 is a schematic view of a partial perspective of the automatic sewage sampling and detection device in an embodiment of the present application; Figure 2 is a schematic view of another partial perspective of the automatic sewage sampling and detection device in an embodiment of the present application; Figure 3 is a schematic structural view of the detection bottle in an embodiment of the present application; Figure 4 is a schematic structural view of the recycling box and the cleaning box in an embodiment of the present application.

[0017] Description of the Reference Numerals: 1, cabinet; 2, liquid extraction pump; 3, sample container; 4, sliding rack; 5, detection bottle; 51, liquid inlet hole; 52, overflow hole; 53, pH test probe; 54, bottle body; 55, rotating plate; 56, liquid storage cavity; 57, liquid outlet hole; 58, communication port; 59, communication pipe; 6, liquid outlet head; 7, driving mechanism; 8, control mechanism; 9, recycling box; 91, diversion cavity; 92, recycling port; 10, cleaning box; 11, liquid extraction pipe; 11a, outer sleeve; 11b, retracted pipe; 12, recycling hose. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the attached Figures 1-4 , and it is obvious that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0019] The embodiments of the present application disclose an automatic sewage sampling and detection device. Referring to Figure 1 and Figure 2 , the automatic sewage sampling and detection device includes a cabinet 1, a liquid extraction pump 2, a plurality of sample containers 3, a sliding rack 4, a detection bottle 5, a liquid outlet head 6, a driving mechanism 7, and a control mechanism 8.

[0020] The internal space of the cabinet body 1 is divided into at least two layers in the up-down direction. In this embodiment, it is divided into an upper layer and a lower layer. The sliding rack 4, the detection bottle 5, the liquid outlet head 6, and the control mechanism 8 are located in the upper layer of the cabinet body 1, and the liquid extraction pump 2 and multiple sample containers 3 are located in the lower layer of the cabinet body 1. The layered structure provides a reasonable installation position for each component, making the overall layout of the device compact and the space utilization rate high.

[0021] The liquid inlet of the liquid extraction pump 2 is communicated with the liquid extraction pipe 11. The liquid extraction pipe 11 passes through the inside of the cabinet body 1 and is placed in the sewage, and can extract the sewage from the outside into the device. Refer to Figure 3 , the detection bottle 5 is provided with a liquid inlet hole 51 and an overflow hole 52. A pH test probe 53 is provided inside the detection bottle 5, which can detect the acidity and alkalinity of the sewage in real time. The liquid inlet hole 51 is connected to the liquid outlet of the liquid extraction pump 2 through a hose to ensure that the sewage can smoothly enter the detection bottle 5. The liquid outlet head 6 is communicated with the overflow hole 52 and is located above the sample container 3. Refer to Figure 2 , multiple sample containers 3 are arranged in sequence along the same horizontal direction in the lower layer space of the cabinet body 1. The sliding rack 4 is slidably installed in the cabinet body 1 along the arrangement direction of the sample containers 3, providing a moving platform for the detection bottle 5 and the liquid outlet head 6, so that they can accurately correspond to each sample container 3. The driving mechanism 7 drives the sliding rack 4 to slide. The driving mechanism 7 can be a linear module, a rodless cylinder, a ball screw + motor and other structures to realize the precise positioning of the liquid outlet head 6, and is used to pour the detected sewage from the liquid outlet head 6 in the upper layer down into the sample container 3.

[0022] When the liquid extraction pump 2 injects the sewage into the detection bottle 5 through the liquid inlet hole 51, the liquid continuously flows in until it reaches the height of the overflow hole 52. At this time, the excess sewage flows into the liquid outlet head 6 through the overflow hole 52 and finally enters the corresponding sample container 3 below. The overflow hole 52 ensures that the sewage level in the detection bottle 5 is always stable at the set height by restricting the liquid level height, and the pH test probe 53 is always completely immersed in the sewage. For example, in acidic wastewater, the local pH may change suddenly, avoiding measurement errors caused by uneven local concentration.

[0023] The control mechanism 8 is electrically connected to the liquid extraction pump 2, the drive mechanism 7, and the pH test probe 53, and includes a control module. The control mechanism 8 is specifically an electrical box, and there are multiple buttons on the electrical box. The user starts the corresponding operation by pressing the buttons. The control mechanism 8 is used to respond to the user's start operation. After starting the drive mechanism 7 to drive the sliding frame 4 to move to a preset distance, the liquid outlet head 6 is made to face the opening of the first sample container 3, then stop the drive mechanism 7 and start the liquid extraction pump 2 to pump the sewage into the sample container 3. After the first preset time, stop the liquid extraction pump 2 and then start the drive mechanism 7 to drive the sliding frame 4 to move to face the opening of the next sample container 3. The first preset time is the time required for the sample container 3 to flow in the required amount of sewage. Repeat the operation until the last sample container 3 is filled with sewage, then stop the liquid extraction pump 2. The preset distance is the difference between the horizontal distance between the liquid outlet head 6 and the target sample container 3 and the distance that the liquid outlet head 6 has moved.

[0024] The control module can coordinate the actions of each component according to the user's start operation, realizing the whole process of automatic sampling and detection, which greatly improves the work efficiency. During the process of the sewage flowing into the sample container 3, the sewage flows into the detection bottle 5 through the liquid inlet hole 51 and flows out through the overflow hole 52. The acidity and alkalinity of the sewage can be detected during the sewage collection process without additional detection operations.

[0025] Refer to Figure 3, the detection bottle 5 includes a bottle body 54 and a rotating plate 55. The side wall of the bottle body 54 is a double-layer structure with an inner and outer interval to form a liquid storage cavity 56. The liquid inlet hole 51 is arranged at the top of the bottle body 54 and communicates with the liquid storage cavity 56. A plurality of liquid outlet holes 57 are arranged at intervals along the circumferential direction on the inner layer of the side wall of the bottle body 54. The liquid outlet holes 57 face the pH test probe 53. Sewage can be evenly distributed in the liquid storage cavity 56 and can fully contact with the pH test probe 53 from all around it, improving the accuracy of detection. The rotating plate 55 is rotatably installed in the bottle body 54 around the axis through a rotating shaft. The middle of the rotating shaft is penetrated and arranged in a tubular shape. The overflow hole 52 is arranged on the rotating plate 55 and is located at an eccentric position of the rotating plate 55. The upper end of the rotating plate 55 is hollow and communicates with the overflow hole 52. One end of the rotating shaft communicates with the inside of the rotating plate 55, and the other end is connected to the liquid outlet head 6 through a hose. A communication port 58 is arranged at the bottom of the bottle body 54. The communication port 58 is connected to the liquid outlet head 6 through a communication pipe 59 and a hose. The communication pipe 59 penetrates the bottle body 54 and is located in the liquid storage cavity 56. Rotating the rotating shaft to drive the rotating plate 55 to rotate can control the opening of the communication port 58. When sampling sewage, rotate the rotating plate 55 to block the communication port 58. At the same time, the overflow hole 52 is at a high position, and the overflow hole 52 plays an overflow role, so that the detection end of the pH test probe 53 is immersed in the sewage, ensuring the stability of detection. When cleaning the device after sampling, rotate the rotating plate 55 to stagger the rotating plate 55 from the communication port 58. The communication port 58 is located below the overflow hole 52 and plays a role in draining water. The clear water impacts the pH test probe 53 and the inner side wall of the bottle body 54, and can play a role in flushing the pH test probe 53 and the inner wall of the bottle body 54. After the cleaning of the bottle body 54 is completed, rotate the rotating plate 55 to block the communication port 58, and the clear water can clean the inside of the rotating plate 55.

[0026] Referring to Figure 4 , the recycling box 9 is connected to the liquid outlet head 6 through a recycling hose 12. The side wall of the upper part of the recycling box 9 is a double-layer structure with an inner and outer layer to form a diversion cavity 91. A recycling hole communicating with the diversion cavity 91 is arranged at the top of the recycling box 9. The recycling hole is connected to one end of the recycling hose 12, and the other end of the recycling hose 12 is used for detachable connection with the liquid outlet head 6 ( Figure 4 only a part of the recycling hose 12 is shown in

[0027] Place the liquid extraction pipe 11 at the sewage place and start the liquid extraction pump 2 to perform sewage sampling and detection. After sampling, place the liquid extraction pipe 11 in the cleaning box 10 to extract clear water to clean the pipelines, the detection bottle 5, etc. in the device to form waste liquid. It can be understood that in the early stage of cleaning, the sewage content in the waste liquid is relatively high. As the cleaning continues, the sewage content in the waste liquid gradually decreases until the sewage in the pipelines, the detection bottle 5, etc. in the device is washed clean and there is no sewage in the waste liquid, and the cleaning is completed.

[0028] The waste liquid enters the recovery tank 9 through the recovery hose 12, enabling the recovery and treatment of sewage and avoiding environmental pollution. Meanwhile, the cleaning liquid in the cleaning tank 10 can be used to clean components such as the test bottle 5, ensuring the cleanliness of the device and avoiding affecting the next test.

[0029] The liquid extraction pipe 11 is a telescopic pipe, including an outer sleeve 11a and a retractable pipe 11b slidably installed within the outer sleeve 11a. The top of the cleaning tank 10 is provided with a first jack for inserting the retractable pipe 11b, and the top of the cleaning tank 10 abuts against the outer sleeve 11a to seal the first jack. The top of the recovery tank 9 is provided with a second jack for inserting the outer sleeve 11a, and the outer sleeve 11a is provided with a limit block that abuts against the top of the recovery tank 9.

[0030] When extracting sewage, the retractable pipe 11b can be retracted into the outer sleeve 11a to avoid sewage contaminating the outer wall of the retractable pipe 11b. When extracting clean water to clean the device, the retractable pipe 11b can be pulled out of the outer sleeve 11a, and the retractable pipe 11b extends into the cleaning tank 10 to avoid contaminating the clean water in the cleaning tank 10. The outer sleeve 11a adhered with sewage is located within the recovery tank 9, and the extracted clean water passes through the liquid extraction pump 2, the test bottle 5, and the liquid outlet head 6 and then flows back into the diversion cavity 91, and impacts and cleans the outer sleeve 11a through the recovery port 92.

[0031] The top of the cleaning tank 10 is a diversion cone with a gradually increasing diameter from top to bottom. The diversion cone is located outside the retractable pipe 11b, and the upper end abuts against the bottom of the outer sleeve 11a. The setting of the diversion cone can guide the cleaning liquid to flow evenly into the recovery tank 9, avoiding accumulation on the top of the cleaning liquid and affecting the cleaning effect of the outer sleeve 11a.

[0032] One end of the outer sleeve 11a away from the limit block, that is, the lower end, is provided with a counterweight. The setting of the counterweight can increase the stability of the liquid extraction pipe 11, prevent it from shaking due to water flow impact during the liquid extraction process, and ensure the smoothness of liquid extraction and the sealing performance of the cleaning tank 10 and the recovery tank 9.

[0033] The inner wall of the cabinet body 1 is provided with a heat insulation layer. The heat insulation layer can effectively reduce the heat exchange between the inside and outside of the cabinet body 1, maintain the relative stability of the internal temperature of the cabinet body 1, provide suitable environmental conditions for sewage sampling and detection, and avoid the influence of temperature changes on the detection results.

[0034] A sound insulation layer is provided around the liquid extraction pump 2, and a sound sensor close to the sample container 3 is provided on the sliding frame 4. The sound sensor is used to detect the sound decibel when the sample container 3 receives sewage. The control mechanism 8 further includes a judgment module, and the judgment module is used to judge whether the selected target mode belongs to the unified mode or the difference mode in response to the user's selection operation. The control module is used to turn off the sound sensor if the target mode is the unified mode; if the target mode is the difference mode, the sound sensor is turned on while the liquid extraction pump 2 is turned on, and the first preset time is from the time when the liquid extraction pump 2 is turned on until the sound decibel reaches the preset decibel. In this way, different working modes can be selected according to the user's needs. When the sizes of the sample containers 3 are the same, the unified mode can be selected. In this mode, the device samples and detects at fixed time intervals, and the operation is simple, which is suitable for conventional sewage detection. When the sizes of the sample containers 3 are different and different volumes of sewage need to be taken, the difference mode can be selected. The sound decibel when the sample container 3 receives sewage is detected by the sound sensor. When the sound decibel reaches the preset value, it means that the amount of sewage in the sample container 3 has reached the required amount, and at this time, the liquid extraction pump 2 is stopped. The sound sensor recognizes the audio characteristics of the liquid droplets hitting the inside of the container (such as the low-frequency roar indicating that the liquid level is approaching full capacity) and feeds back to the control module in real time to accurately stop the liquid extraction, avoiding overflow or insufficient sampling. This mode can flexibly control the sampling volume according to the actual capacity of the sample container 3 and improve the accuracy of sampling. Introducing acoustic sensing into the control of sewage sampling volume realizes non-contact liquid level judgment and avoids the problems of easy jamming of traditional float sensors and easy contamination of electrode sensors.

[0035] The control module is further used to start the driving mechanism 7 after the liquid extraction pump 2 stops for the second preset time, which can ensure that after the liquid extraction pump 2 stops, the sewage can fully flow into the sample container 3, avoiding the situation that the sewage drips into the cabinet body 1 or the sampling is inaccurate due to the premature start of the driving mechanism 7.

[0036] The control module is further used to start the driving mechanism 7 to drive the sliding frame 4 to return to the initial position after the liquid extraction pump 2 stops when the last sample container 3 is filled with sewage, which can ensure that after the device completes sampling and detection, it can automatically return to the initial state, prepare for the next operation, and improve the automation degree and working efficiency of the device.

[0037] The control module is further used to start the liquid extraction pump 2 for a preset time and then stop the liquid extraction pump 2 in response to the user's cleaning operation. The preset time is the time required to clean the pipelines and the detection bottle 5 in the device with clean water.

[0038] The control mechanism 8 further includes a transmission module, which is electrically connected to the pH test probe 53 and communicatively connected to the cloud server, and is used to transmit the sewage pH data measured by the pH test probe 53 to the cloud server. Through the transmission module, users can obtain the detection data of the sewage in real time, and conduct remote monitoring and analysis, which is convenient for timely grasping and handling of the sewage situation.

[0039] The working principle of the automatic sewage sampling and detection device is as follows: First, the user starts the device through the control mechanism 8. The control module determines the target mode according to the user's selection operation. If it is the unified mode, the control module turns off the sound sensor, and sequentially controls the driving mechanism 7 to drive the sliding frame 4 to move to the relative positions of the openings of each sample container 3 at a preset time interval, starts the liquid extraction pump 2 to pump the sewage into the sample container 3, stops the liquid extraction pump 2 after the first preset time, then drives the sliding frame 4 to move to the next sample container 3, and repeats the operation until the last sample container 3 is filled with sewage. If the target mode is the differentiation mode, the control module turns on the sound sensor. While starting the liquid extraction pump 2, the sound sensor detects the sound decibel when the sample container 3 receives the sewage. When the sound decibel reaches the preset value, the liquid extraction pump 2 is stopped, and then the sliding frame 4 is driven to move to the next sample container 3 to continue the above process. During the whole sampling process, first, the sewage is pumped from the outside into the detection bottle 5 through the liquid extraction pump 2. The overflow hole 52 is at a high position, and the pH test probe 53 detects the acidity and alkalinity of the sewage in real time. The detected sewage is discharged to the sample container 3 through the liquid outlet head 6. When the last sample container 3 is filled with sewage, the control module stops the liquid extraction pump 2, and starts the driving mechanism 7 after the second preset time to drive the sliding frame 4 back to the initial position. At the same time, the transmission module transmits the sewage pH data measured by the pH test probe 53 to the cloud server for users to conduct remote monitoring and analysis.

[0040] When the detection bottle 5 has completed the sampling of sewage and it is necessary to clean components such as the detection bottle 5 and pipelines, connect the recovery hose 12 to the liquid outlet head 6, insert the retractable tube 11b of the liquid extraction tube 11 into the first jack on the top of the cleaning tank 10, and make the outer sleeve tube 11a abut against the top of the cleaning tank 10 to seal the jack, so as to introduce the cleaning liquid into the detection bottle 5 and the pipelines, thoroughly clean the inside of the detection bottle 5 and the pipelines, further ensure the cleanliness of the device, and prepare for the next detection. By rotating the rotating plate 55, the rotating plate 55 is staggered from the communication port 58. At this time, the communication port 58 functions to drain sewage. During the process of sewage discharge, the clear water passing through the liquid outlet hole 57 will cause a certain impact on the pH test probe 53, thus playing a flushing role and washing away the residual sewage attached to the pH test probe 53, reducing the detection error and ensuring the accuracy of the detection. The discharged sewage then flows into the recovery tank 9, and the sewage flushes the outer sleeve tube 11a through the recovery port 92. The sewage enters the inside of the recovery tank 9 for recovery treatment, avoiding direct discharge and causing environmental pollution. Through the flushing of the cleaning liquid, the cleanliness of the detection components and pipelines is ensured. Not only is the effective recovery and treatment of the sewage after detection realized, but also the service life of the device and the reliability of the detection are improved.

[0041] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0042] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise clearly specifically limited.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A sewage automatic sampling and detection device, characterized in that: include: A cabinet (1), wherein the interior space of the cabinet (1) is divided into at least two layers in the upper and lower directions; A liquid extraction pump (2) is arranged in the cabinet (1), and a liquid inlet of the liquid extraction pump (2) is connected to a liquid extraction pipe (11); A plurality of sample containers (3) are arranged in sequence in the lower space of the cabinet (1) along the same horizontal direction; A sliding rack (4) is slidably mounted in the cabinet (1) along the arrangement direction of the plurality of sample containers (3); A detection bottle (5) is arranged on the sliding frame (4), the detection bottle (5) is provided with a liquid inlet hole (51) and an overflow hole (52), a pH test probe (53) is arranged in the detection bottle (5), and the liquid inlet hole (51) is connected to the liquid outlet of the liquid pump (2) through a hose; A liquid outlet head (6) is disposed on the sliding frame (4) and is connected to the overflow hole (52); A driving mechanism (7) for driving the sliding frame (4) to slide; as well as The control mechanism (8) is electrically connected to the liquid pump (2), the driving mechanism (7), and the pH test probe (53), and comprises a control module, which is used to respond to a user's starting operation, start the driving mechanism (7) to drive the sliding frame (4) to move to a preset distance, so that the liquid outlet head (6) is opposite to the opening of the first sample container (3), stop the driving mechanism (7) to start the liquid pump (2) to pump sewage into the sample container (3), stop the liquid pump (2) after a first preset time, and then start the driving mechanism (7) to drive the sliding frame (4) to move to opposite to the opening of the next sample container (3), and repeat the operation until the last sample container (3) is pumped with sewage, and then stop the liquid pump (2).

2. The automatic sewage sampling and detection device according to claim 1, characterized in that: Also includes: A recovery box (9), wherein the side wall of the upper part of the recovery box (9) is a double-layer structure with inner and outer layers to form a guide cavity (91), the recovery box (9) is provided with a recovery hole communicating with the guide cavity (91), the recovery hole is connected to one end of a recovery hose (12), the other end of the recovery hose (12) is used for detachable connection with the liquid outlet head (6), and the inner layer of the side wall of the recovery box (9) is provided with a plurality of recovery ports (92) at intervals along the circumferential direction; A cleaning box (10), located inside the recovery box (9) and below the recovery port (92), for storing cleaning liquid; The liquid extraction tube (11) is a telescopic tube, comprising an outer sleeve (11a) and an inner shrinkage tube (11b) slidably mounted in the outer sleeve (11a); a first insertion hole for inserting the inner shrinkage tube (11b) is provided at the top of the cleaning box (10); the top of the cleaning box (10) abuts against the outer sleeve (11a) to seal the first insertion hole; a second insertion hole for inserting the outer sleeve (11a) is provided at the top of the recovery box (9); and a limit block abuts against the top of the recovery box (9) is provided on the outer sleeve (11a).

3. The automatic sewage sampling and detection device according to claim 2 is characterized in that: The detection bottle (5) comprises: A bottle body (54), wherein the side wall of the bottle body (54) is a double-layer structure with inner and outer spacing to form a liquid containing cavity (56), the liquid inlet hole (51) is arranged at the top of the bottle body (54) and is in communication with the liquid containing cavity (56), and the inner layer of the side wall of the bottle body (54) is provided with a plurality of liquid outlet holes (57) at intervals along the circumferential direction, and the liquid outlet holes (57) face the pH test probe (53); A rotating plate (55), a communication port (58) is provided on the inner side wall of the bottom of the bottle body (54), the overflow hole (52) is provided on the rotating plate (55) and is located at an eccentric position of the rotating plate (55), the upper end of the rotating plate (55) is hollow and communicates with the overflow hole (52), the rotating plate (55) is installed in the bottle body (54) by rotating around an axis through a rotating shaft to block or open the communication port (58), the middle part of the rotating shaft is through, one end is communicated with the inside of the rotating plate (55), and the other end is communicated with the liquid outlet head (6).

4. The automatic sewage sampling and detection device according to claim 2 is characterized in that: The top of the cleaning box (10) is a guide cone with a diameter that gradually increases from top to bottom. The guide cone is located outside the inner shrinkage tube (11b), and the upper end of the guide cone abuts against the bottom of the outer sleeve (11a).

5. The automatic sewage sampling and detection device according to claim 4 is characterized in that: A counterweight is provided at one end of the outer sleeve (11a) away from the limiting block.

6. The automatic sewage sampling and detection device according to claim 1, characterized in that: The inner wall of the cabinet (1) is provided with a heat-insulating layer.

7. The automatic sewage sampling and detection device according to claim 1, characterized in that: A sound insulation layer is provided on the periphery of the liquid pump (2), and a sound sensor close to the sample container (3) is provided on the sliding frame (4), and the sound sensor is used to detect the decibel of sound when the sample container (3) is connected to sewage; The control mechanism (8) further comprises a judgment module, the judgment module being used for judging whether the selected target mode belongs to the unified mode or the distinguished mode in response to the user's selection operation; The control module is used to turn off the sound sensor if the target mode is the unified mode; if the target mode is the differentiated mode, turn on the sound sensor while turning on the liquid pump (2), and the first preset time is from the time when the liquid pump (2) is turned on to the time when the sound decibel reaches the preset decibel.

8. The automatic sewage sampling and detection device according to claim 7, characterized in that: The control module is also used to control the liquid pump (2) to stop for a second preset time and then start the driving mechanism (7) to start.

9. The automatic sewage sampling and detection device according to claim 7, characterized in that: The control module is also used to start the driving mechanism (7) to drive the sliding frame (4) to return to the initial position after the last sample container (3) is pumped with sewage and the liquid pump (2) is stopped.

10. The automatic sewage sampling and detection device according to claim 1, characterized in that: The control mechanism (8) further comprises a transmission module, the transmission module being electrically connected to the pH test probe (53), the transmission module being communicatively connected to a cloud server, and being used for transmitting the sewage pH data measured by the pH test probe (53) to the cloud server.

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