CN117990427A - Sewage sampling device and sewage discharge system - Google Patents

Abstract

The invention relates to the technical field of sewage sampling, and particularly discloses a sewage sampling device and a sewage discharge system, wherein the sewage sampling device comprises a sampling box, a rotary table, a cup holder, a cup falling mechanism, a motor and an overflow container, wherein a plurality of cup falling openings which are circumferentially distributed are arranged on the rotary table which is rotationally arranged in the sampling box; residual sewage in the sampling pipeline can enter the overflow container during sampling, the sewage sample overflows into the sampling cup, the accuracy of sample collection can be guaranteed, the turntable is linked with the cup falling mechanism, multi-frequency sampling of the sewage can be realized in the same time period, the collected sewage sample is representative, and therefore the accuracy and the reliability of a detection result are guaranteed.

Description

Sewage sampling device and sewage discharge system

Technical Field

The invention relates to the technical field of sewage sampling, in particular to a sewage sampling device and a sewage discharge system.

Background

The sewage detection sampling is an important link in daily work of environmental protection supervision departments, and is mainly used for ensuring that the emission of pollutants accords with environmental protection regulations and standards. When the existing sewage is sampled and detected, a manual sampling mode is generally adopted, on one hand, manual sampling is generally carried out on site by workers, and for large emission sources or areas needing frequent sampling, the workload is large, so that the labor intensity of the workers is large, on the other hand, the manual sampling is generally carried out at a specific time point, however, when the condition of uneven pollutant concentration distribution or sudden high-concentration pollution occurs, the representativeness of the sampling is difficult to ensure, the accuracy and the reliability of a detection result are difficult to ensure, and therefore, the pollution degree is underestimated by enterprises or environmental protection regulatory authorities.

Therefore, providing a sewage sampling device capable of multi-time node and multi-frequency sampling is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention discloses a sewage sampling device and a sewage discharge system, which are used for solving the technical problem that the representativeness of a sewage sample is poor in the sewage detection sampling in the related technology.

In order to solve the problems, the invention adopts the following technical scheme:

in a first aspect, the present application provides a sewage sampling device, comprising a sampling tank, a turntable, a cup holder, a cup falling mechanism, a motor and an overflow container; wherein:

the rotary table is rotationally arranged in the sampling box, a plurality of cup falling openings distributed along the circumferential direction of the rotary table are formed in the rotary table, the cup holders are arranged above the rotary table, and a plurality of sampling cups are stacked in the cup holders along the height direction;

The motor is connected with the rotary table to drive the rotary table to rotate, the rotary table is connected with the cup falling mechanism, and the cup falling mechanism is configured to stir the sampling cup positioned at the bottom layer to fall into the cup falling opening after the rotary table rotates by a preset angle;

The overflow container is provided with a liquid inlet, an overflow pipe and a liquid outlet, wherein the liquid inlet of the overflow pipe is positioned between the liquid inlet and the liquid outlet, at least part of the overflow pipe extends into the sampling box, and the liquid outlet of the overflow pipe corresponds to the cup falling opening.

Further, the turntable comprises a turntable base body, a first gear and a first shaft rod, wherein the turntable base body and the first gear are coaxially fixed on the first shaft rod; the cup falling mechanism comprises a second shaft rod and a spiral blade arranged on the second shaft rod, a cup rim of the sampling cup is provided with a cup edge which is radially outwards protruded, a part of the spiral blade stretches into a space between the cup edge of the sampling cup positioned at the bottom layer and the cup edge of the sampling cup positioned at the secondary bottom layer, and the second shaft rod is matched with the first gear through a gear transmission mechanism.

Further, the gear transmission mechanism comprises a toothed ring and a second gear, the cup holder is arranged in the toothed ring in a penetrating mode, the first gear is meshed with the outer ring of the toothed ring, the second gear is meshed with the inner ring of the toothed ring, and the second gear is fixedly sleeved on the second shaft rod.

Further, the number of the cup falling mechanisms is three, and the three cup falling mechanisms are uniformly distributed along the circumferential direction of the cup holder.

Further, the overflow pipe comprises a first pipe section and a second pipe section connected with the first pipe section, the second pipe section is bent and arranged relative to the first pipe section, and the first pipe section and the second pipe section are obliquely arranged relative to the height direction.

Further, the sewage sampling device still includes still that the centre gripping release mechanism is located fall rim of a cup department, in order to centre gripping the sample cup or release the sample cup, the centre gripping release mechanism includes clamping assembly and release subassembly, wherein:

The clamping assembly comprises two clamping arms and an elastic piece, wherein the two clamping arms are rotationally connected, the elastic piece is arranged at the rotational connection part of the two clamping arms, and the elastic piece is configured to apply elastic acting force to the two clamping arms so that the two clamping arms form a clamping state;

The release assembly comprises two poking sheets and a pin shaft, one ends of the two poking sheets are rotationally connected, the pin shaft is arranged at the rotational connection position of the two poking sheets, the other ends of the two poking sheets are rotationally connected with the two clamping arms respectively, and when the pin shaft is configured to be subjected to thrust, the two poking sheets are pushed to rotate back to the back, so that the two clamping arms are enabled to rotate back to the open state.

Further, the sampling box comprises a box body, a box cover and a drawer tray, wherein:

The box body is provided with a containing cavity and an opening communicated with the containing cavity, and the box cover is rotationally arranged on the box body so as to shield the opening or enable the opening to be in an exposed state;

The drawer tray is positioned below the turntable, a containing groove corresponding to the cup falling opening is formed in the drawer tray, and the sampling cup released by the clamping and releasing mechanism can fall into the containing groove;

In the process of switching the box cover from the closed state to the open state, the box cover is contacted with at least one pin shaft, and thrust is applied to the pin shaft, so that the two clamping arms are rotated back to form an open state.

Further, the case cover comprises a case cover body and a trigger piece connected with the case cover body, wherein the trigger piece is provided with a radially inward convex abutting part, and the abutting part can contact with at least one pin shaft along with the rotation of the case cover body and apply thrust to the pin shaft.

Further, one of the box body and the trigger piece is provided with a chute, and the other is provided with a guide part which is in sliding fit with the chute;

The sliding groove comprises an avoidance section and an extension section which are communicated with each other, the extension section extends along the circumferential direction of the box body, the avoidance section is bent relative to the extension section, the guide part is positioned in the avoidance section under the condition that the box cover is in a closed state, so that the abutting part is avoided from the rotating track of the pin shaft, and when the box cover is switched from the closed state to the open state, the guide part slides into the extension section, so that the abutting part contacts with at least one pin shaft and applies thrust to the pin shaft.

In a second aspect, the application further provides a sewage discharge system, which comprises a sewage container, a sewage branch pipe, a sewage main pipe, a sampling branch pipe and the sewage sampling device, wherein the at least two sewage branch pipes are connected in parallel between the sewage container and the sewage main pipe, and liquid inlet ports of the at least two sewage branch pipes are distributed along the height direction of the sewage container.

One end of the sampling branch pipe is connected with the sewage draining main pipe, and the other end of the sampling branch pipe is connected with the liquid inlet of the overflow container.

The technical scheme adopted by the invention can achieve the following beneficial effects:

According to the sewage sampling device and the sewage discharge system, when sewage discharged by the sewage container flows into the overflow container, residual sewage in the pipeline can be temporarily stored in the overflow container, and when the liquid level of the sewage in the overflow container is higher than the liquid inlet port of the overflow pipe, the sewage continuously discharged by the sewage container can overflow into the sampling box through the overflow pipe and is collected in the sampling cup, after a single sampling action is finished, the pipeline flowing to the overflow container can be closed, and the residual sewage in the pipeline can be prevented from being collected in the sampling cup to influence the accuracy of sample collection.

Meanwhile, when the turntable rotates by a preset angle, the cup falling mechanism linked with the turntable can dial a new sampling cup into the cup falling opening, the sampling cup for collecting the sewage sample is rotated to be separated from the position corresponding to the liquid outlet port of the overflow pipe, and meanwhile, the new sampling cup is rotated to the position corresponding to the liquid outlet port of the overflow pipe so as to facilitate the next overflow sampling. In this way, in the same time period, the pipeline for clicking and flowing to the overflow container can be intermittently opened, so that the sewage sampling device can intermittently and multiply sample the discharged sewage, the collected sewage sample can be representative, and the accuracy and the reliability of the detection result are ensured.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing an external structure of a sewage sampling device according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view showing an internal structure of a sewage sampling device according to an embodiment of the present application;

FIG. 4 is a schematic view of the structure of a cup holder according to an embodiment of the application;

FIG. 5 is a schematic diagram of the connection of the turntable and the cup dropping mechanism according to the embodiment of the application;

FIG. 6 is an enlarged partial schematic view at B in FIG. 5;

FIG. 7 is a schematic view of the structure of a case cover according to an embodiment of the present application;

FIG. 8 is a schematic view of a chute according to an embodiment of the application;

FIG. 9 is a schematic view showing a structure of a clamping arm in a clamped state according to an embodiment of the present application;

FIG. 10 is a schematic view of a clamp arm in an open configuration according to an embodiment of the present application;

FIG. 11 is an enlarged partial schematic view at C in FIG. 10;

fig. 12 is a schematic view of a sewage discharge system according to an embodiment of the present application.

In the figure:

10. a sewage container; 20. a blow-down branch pipe; 30. a sewage main pipe; 40. sampling branch pipes; 50. a return pipe; 60 a-a first valve; 60 b-a second valve; 60 c-a third valve; 60 d-fourth valve;

100. Sampling box; 110. a case; 111. a chute; 111a, an avoidance section; 111b, an extension; 120. a case cover; 121. a case cover body; 122. a trigger; 122a, an abutment; 122b, a guide; 130. a drawer tray; 131. a receiving groove; 200. a turntable; 210. a turntable base; 211. a cup falling opening; 220. a first gear; 230. a first shaft; 300. cup holder; 310. an annular mounting portion; 400. a cup falling mechanism; 410. a second shaft; 420. a helical blade; 500. a motor; 600. an overflow container; 610. a liquid inlet; 620. an overflow pipe; 621. a first pipe section; 622. a second pipe section; 630. a liquid outlet; 700. a sampling cup; 710. a cup edge; 800. a gear transmission mechanism; 810. a toothed ring; 820. a second gear; 900. a clamp release mechanism; 911. a clamping arm; 921. a pulling piece; 922. and a pin shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The sewage sampling device and the sewage discharge system provided by the embodiment of the application are described in detail below by referring to fig. 1 to 12 through specific embodiments and application scenarios thereof.

Referring to fig. 1, 2, 3, 4 and 12, an embodiment of the present application discloses a sewage sampling device, which includes a sampling tank 100, a turntable 200, a cup holder 300, a cup dropping mechanism 400, a motor 500 and an overflow container 600. Wherein, the sampling tank 100 is a basic component of the sampling device, and can provide a mounting basis for the turntable 200, the cup holder 300, the cup falling mechanism 400 and the motor 500, the overflow container 600 can be externally arranged on the sampling tank 100, the overflow container 600 is connected with the sewage container 10, and when the sampling operation is performed, sewage discharged by the sewage container 10 can flow into the overflow container 600 and can flow into the sampling tank 100 in an overflow manner.

In the embodiment of the present application, the turntable 200 is rotatably disposed in the sampling box 100, and the turntable 200 is provided with a plurality of cup falling openings 211 distributed along the circumferential direction thereof, and in a preferred embodiment, the cup falling openings 211 are uniformly distributed along the circumferential direction of the turntable 200. The cup holder 300 is integrally formed in a cylindrical cage-like structure, the cup holder 300 is fixedly disposed on the sampling case 100, the cup holder 300 is disposed above the turntable 200, and a plurality of sampling cups 700 are stacked in the cup holder 300 in the height direction.

Referring to fig. 3 and 4, the cup dropping mechanism 400 is disposed adjacent to the cup holder 300, and a portion of the cup dropping mechanism 400 extends between the bottom sampling cup 700 and the sub-bottom sampling cup 700, and when the cup dropping mechanism 400 is operated, the cup dropping mechanism 400 can dial the bottom sampling cup 700 in the sampling cup stack to drop the bottom sampling cup 700 into the cup dropping opening 211 on the turntable 200.

In the embodiment of the present application, please continue to refer to fig. 3 and 4, the motor 500 is connected to the turntable 200 to drive the turntable 200 to rotate, and meanwhile, the turntable 200 is further connected to the cup dropping mechanism 400, that is, when the motor 500 drives the turntable 200 to rotate, the cup dropping mechanism 400 follows the rotation synchronization action of the turntable 200, and the cup dropping mechanism 400 is configured to stir the bottom sampling cup 700 to drop into the cup dropping opening 211 after the turntable 200 rotates by a preset angle. In this way, the position switching of the sampling cup 700 and the feeding of the sampling cup 700 can be realized through one motor, and the position switching of the sampling cup 700 and the feeding of the sampling cup 700 are also beneficial to ensuring consistency, so that the control difficulty of the sewage sampling device is reduced.

It should be noted that, the preset angle provided in the embodiment of the present application refers to the central angle of the turntable 200 corresponding to the space between two adjacent cup falling openings 211, and in an exemplary embodiment, when the cup falling openings 211 are 8 evenly distributed along the circumferential direction of the turntable 200, the preset angle is 45 °. When sampling operation is performed, when the previous cup falling opening 211 is located right below the cup holder 300, the angle between the next cup falling opening 211 and the previous cup falling opening 211 is just a preset angle, after the turntable 200 rotates by the preset angle, the next cup falling opening 211 just rotates right below the cup holder 300, and meanwhile, the cup falling mechanism 400 linked with the turntable 200 dials the sampling cup 700 located at the bottom layer in the sampling cup stacking material into the next cup falling opening 211.

In the embodiment of the present application, the overflow container 600 has a liquid inlet 610, an overflow pipe 620 and a liquid outlet 630, wherein the liquid inlet 610 is located above the liquid outlet 630, the liquid inlet 610 is used for communicating with the sewage container 10, sewage discharged from the sewage container 10 can flow into the overflow container 600 through the liquid inlet 610, the liquid inlet of the overflow pipe 620 is located between the liquid inlet 610 and the liquid outlet 630, at least part of the overflow pipe 620 extends into the sampling box 100, and the liquid outlet of the overflow pipe 620 corresponds to the cup falling opening 211.

Based on the above technical solution, when the sewage sampling device of the embodiment of the present application is specifically used, the sewage discharged from the sewage container 10 can be temporarily stored in the overflow container 600 by introducing the sewage remaining in the pipeline into the overflow container 600 when the sewage flows into the overflow container 600. Specifically, the residual sewage in the pipe is temporarily stored at the bottom of the overflow container 600. As the remaining sewage in the pipe is discharged entirely, the level of the sewage in the overflow container 600 is gradually increased up to be higher than the inlet port of the overflow pipe 620. In this way, the residual sewage in the pipe is prevented from overflowing from the overflow container 600 into the sampling tank 100 and being collected in the sampling cup 700. After the single sampling operation is completed, the pipe to the overflow container 600 may be closed and the sewage at the bottom of the overflow container 600 may be discharged. Therefore, this solution can avoid that residual sewage in the pipeline is collected into the sampling cup 700, which affects the accuracy of sample collection.

At the same time, each time the turntable 200 rotates by a predetermined angle, the cup dropping mechanism 400 coupled with the turntable 200 will also dial a new sampling cup 700 into the cup dropping opening 211, the sampling cup 700 with collected sewage sample is rotated out of the position corresponding to the outlet port of the overflow pipe 620, and at the same time, the new sampling cup 700 is rotated into the position corresponding to the outlet port of the overflow pipe 620 for the next overflow sampling. In this way, the motor 500 and the pipeline flowing to the overflow container 600 may be intermittently opened in the same time period, so that the sewage sampling device intermittently and multi-frequency sampling of the discharged sewage is realized, so that the collected sewage sample can be representative, and the accuracy and reliability of the detection result are ensured. For example, in order to improve the accuracy of each sampling result, multiple sampling may be performed in each sampling period, and the sewage quality may be comprehensively evaluated according to the measurement results of the multiple sampling. For example, the quality of wastewater may be determined based on the content of a certain class of compounds or ions in the water. For example, in the case that the content of a certain class of compounds or ions in water exceeds a preset value, the sewage is rejected. In some embodiments, the average value of the sampling measurements performed for each sampling period may be used as a comparison value for the sub-sampling, and then the sewage is failed by comparing the comparison value with a preset value, where the comparison value is greater than the preset value.

In the embodiment of the present application, referring to fig. 3, 5 and 6, the turntable 200 includes a turntable base 210, a first gear 220 and a first shaft 230, wherein the turntable base 210 is in a disc-shaped structure, cup falling openings 211 are uniformly distributed along the circumferential direction of the turntable base 210, the turntable base 210 and the first gear 220 are coaxially fixed on the first shaft 230, the first gear 220 is located above the turntable base 210, a motor 500 is connected with the first shaft 230, and the motor 500 drives the first shaft 230 to rotate, so as to drive the turntable base 210 and the first gear 220 to rotate.

Referring to fig. 4 and 5, the cup dropping mechanism 400 includes a second shaft 410 and a spiral blade 420 disposed on the second shaft 410, a radially protruding cup edge 710 is disposed at a cup opening of the sampling cup 700, a portion of the spiral blade 420 extends into a space between the cup edge 710 of the sampling cup 700 located at the bottom layer and the cup edge 710 of the sampling cup 700 located at the next bottom layer, and the second shaft 410 is in driving fit with the first gear 220 through the gear transmission mechanism 800, so that the spiral blade 420 follows rotation under the condition that the second shaft 410 rotates, and can abut against the cup edge 710 of the sampling cup 700 located at the bottom layer to push the sampling cup 700 located at the bottom layer into the cup dropping opening 211.

In an alternative embodiment of the present application, the gear transmission mechanism 800 includes a toothed ring 810 and a second gear 820, wherein, the inner ring and the outer ring of the toothed ring 810 are both provided with insections, the cup holder 300 is inserted into the toothed ring 810, the first gear 220 is engaged with the outer ring of the toothed ring 810, the second gear 820 is engaged with the inner ring of the toothed ring 810, and the second gear 820 is fixedly sleeved on the second shaft 410. Based on this technical scheme, when the motor 500 drives the first shaft 230 to rotate, the first gear 220 drives the toothed ring 810 to rotate while the turntable base 210 rotates, and the toothed ring 810 drives the second gear 820 to rotate, so that the spiral blade 420 rotates to dial the bottom sampling cup 700 into the cup falling opening 211 on the turntable base 210.

It should be noted that, in the embodiment of the present application, the cup holder 300 may be installed on the sampling box 100, that is, the cup holder 300 is fixedly installed on the sampling box 100, and the toothed ring 810 may be installed on the cup holder 300 and supported on the rack 300, that is, the toothed ring 810 is rotatably installed on the cup holder 300. For example, referring to fig. 1, 3 and 4, the cup holder 300 is a cylindrical cage structure arranged longitudinally, the upper part of the cup holder 300 is fixedly connected with the sampling box 100, two annular mounting portions 310 distributed longitudinally are arranged at the periphery of the cup holder 300, two ends of the second shaft 410 can be rotatably arranged at the two annular mounting portions 310, the helical blades 420 are arranged between the two annular mounting portions 310, and the toothed ring 810 is rotatably supported on the annular mounting portion 310 above.

In a further technical solution, please continue to refer to fig. 4, the number of the cup dropping mechanisms 400 is three, the three cup dropping mechanisms 400 are uniformly distributed along the circumferential direction of the cup holder 300, when the spiral blade 420 toggles the bottom sampling cup 700 to drop, the three spiral blades 420 apply thrust to the sampling cup 700 together, so that the situation that the single side of the sampling cup 700 is stressed to roll and be blocked in the cup holder 300 can be avoided. In this embodiment, the toothed ring 810 can synchronously drive the plurality of second gears 820, and further drive the plurality of helical blades 420 to rotate, so that the sampling cup 700 can stably fall down, and the inclination or jamming of the sampling cup is avoided.

In the embodiment of the present application, referring to fig. 1 and 2, the overflow pipe 620 includes a first pipe segment 621 and a second pipe segment 622 connected to the first pipe segment 621, the second pipe segment 622 is bent and arranged relative to the first pipe segment 621, and the first pipe segment 621 and the second pipe segment 622 are both arranged in an inclined manner in the height direction, after the sewage is sampled, the sewage remaining in the first pipe segment 621 flows into the overflow container 600 under the action of gravity, and the sewage remaining in the second pipe segment 622 flows into the sampling tank 100 under the action of gravity, so that the sewage remaining in the overflow pipe 620 can be prevented from affecting the accuracy of the next sampling.

The inventors found that, after the completion of the multi-frequency sampling within the same time period, the operator is required to take out the plurality of sampling cups 700 in the sampling box 100, however, when the operator takes the sampling cups 700 having collected the sewage samples, the operator is required to separate the sampling cups 700 one by one from the cup-falling opening 211, and there are cases where the taking is inconvenient, the sewage samples in the sampling cups 700 are easy to roll during the taking, and the sampling is failed.

Based on this situation, in the embodiment of the present application, please refer to fig. 5 and 6, the sewage sampling device further includes a clamping and releasing mechanism 900, where the clamping and releasing mechanism 900 is disposed at the cup falling opening 211 to clamp or release the sampling cup 700, that is, the sampling cup 700 falling from the bottom of the cup holder 300 falls into the cup falling opening 211, the falling sampling cup 700 is clamped by the clamping and releasing mechanism 900, and after the sampling is completed, the clamping and releasing mechanism 900 may further release the sampling cup 700, so as to facilitate the operator to take the sampling cup 700.

Specifically, referring to fig. 5 and 6, the clamp release mechanism 900 includes a clamp assembly and a release assembly, wherein the clamp assembly includes two clamp arms 911 and an elastic member, one ends of the two clamp arms 911 are rotationally connected, and the elastic member is disposed at a rotational connection position of the two clamp arms 911. The elastic member may be a torsion spring, two ends of the torsion spring are respectively connected to the two clamping arms 911, under the elastic action of the torsion spring, the other ends of the two clamping arms 911 are propped against each other or against the inner wall of the cup falling opening 211, at this time, the two clamping arms 911 are in a clamping state, a clamping area is formed between the two clamping arms 911, under the condition that the two clamping arms 911 are in the clamping state, the sampling cup 700 may fall in the clamping area, and the cup edge 710 of the sampling cup 700 is propped against the two clamping arms 911 to avoid falling.

Referring to fig. 6, the release assembly includes two paddles 921 and a pin shaft 922, one ends of the two paddles 921 are rotationally connected, the pin shaft 922 is disposed at a rotational connection position of the two paddles 921, the other ends of the two paddles 921 are rotationally connected with the two clamping arms 911, when the pin shaft 922 receives a radial inward thrust, the two paddles 921 rotate around the pin shaft 922 and rotate back to each other, so that the two clamping arms 911 rotate back to switch to an open state, and in the process of switching the two clamping arms 911 to the open state, the cup edge 710 of the sampling cup 700 is gradually separated from the clamping arms 911 and drops downwards to release.

In the embodiment of the application, the sampling box 100 includes a box body 110, a box cover 120 and a tray 130, wherein the box body 110 has a containing cavity and an opening communicated with the containing cavity, the turntable 200 is rotatably disposed in the containing cavity, the tray 130 is slidably disposed in the containing cavity, the tray 130 is located below the turntable 200, a containing groove 131 corresponding to the cup falling opening 211 is disposed on the tray 130, and the sampling cup 700 released by the clamping release mechanism 900 falls into the containing groove 131. After completing multifrequency subsampling in the same time period, the operating personnel can take out the tray 130 firstly, and then take out a plurality of sampling cups 700 on the tray 130 from the accommodating groove 131 in sequence, so that the problems that the operating personnel can not conveniently take the sampling cup 700 and the sampling cup 700 is easy to tip sideways and topple over when stretching into the sampling box 100 by people are avoided, and the convenience of taking the sampling cup 700 is obviously improved.

The box cover 120 is rotatably arranged on the box body 110 to shield the opening or enable the opening to be in an exposed state, namely, the box cover 120 is in an open state and a closed state, and in the open state, the opening is in the exposed state, and at the moment, the drawer tray 130 can be placed in the box body 110 or the drawer tray 130 can be pulled out from the box body 110; in the closed state, the cover 120 shields the opening, and the cover 120 can protect the turntable 200, the cup holder 300, the cup dropping mechanism 400, the sampling cup 700, and the grip release mechanism 900 in the case 110.

In a further aspect, during the process of switching the cover 120 from the closed state to the open state, the cover 120 contacts the at least one pin 922 and applies a pushing force to the pin 922, and the pushing force may be directed radially inward, for example, to rotate the two clamping arms 911 back to switch the clamping arms 911 from the clamped state to the open state. That is, when the operator rotates the cover 120 to open the cover, the cover 120 can trigger the clamping and releasing mechanism 900 to release, so that the sampling cup 700 after sampling is dropped into the tray 130, and after the cover 120 is opened, the operator only needs to pull the tray 130 away from the plurality of sampling cups 700 that collect the sewage samples and drop onto the tray 130.

Specifically, referring to fig. 1,3, 7 and 9, the case cover 120 includes a case cover body 121 and a trigger member 122 connected to the case cover body 121, the case cover body 121 is disposed on the outer side of the case 110, the trigger member 122 is disposed on the inner side of the case 110, the trigger member 122 is integrally in a ring structure, the trigger member 122 is provided with a radially inward protruding abutment portion 122a, and the abutment portion 122a can contact with at least one pin 922 along with rotation of the case cover body 121 and apply a pushing force to the pin 922. It can be appreciated that the clamp release mechanism 900 corresponding to the pin 922 in contact with the abutment 122a has clamped the sampling cup 700 containing the sewage sample during the process of rotating the cover 120 to open.

Referring to fig. 1,3, 8, 9, 10 and 11, one of the case 110 and the trigger 122 is provided with a sliding slot 111, and the other is provided with a guide portion 122b slidably engaged with the sliding slot 111. Illustratively, the chute 111 is provided in the housing 110, and the guide portion 122b is provided in the trigger 122. The sliding groove 111 includes a through avoidance section 111a and an extension section 111b, the extension section 111b extends along the circumferential direction of the box 110, and the avoidance section 111a is bent relative to the extension section 111 b. Under the condition that the case cover 120 is in a closed state, the guide part 122b is located in the avoiding section 111a, at this time, the abutting part 122a and the pin shaft 922 are dislocated in the axial direction of the turntable 200, and in the process that the motor 500 drives the turntable 200 to rotate by a preset angle, the abutting part 122a avoids the rotation track of the pin shaft 922, so that the situation that the pin shaft 922 at each cup falling opening 211 of the turntable 200 is triggered by contact with the abutting part 122a on the case cover 120 in the rotation process, and a plurality of sampling cups 700 fall at the same position is avoided.

After the multi-frequency sampling is completed, the operator can rotate and open the case cover 120, when the case cover 120 is switched from the closed state to the open state, the guide portion 122b slides from the avoiding section 111a to the extending section 111b, at this time, the abutting portion 122a and the pin shafts 922 at least partially overlap in the axial direction of the turntable 200, and the case cover 120 rotates to enable the abutting portion 122a to sequentially contact and abut against the plurality of pin shafts 922, so that the sampling cup 700 holding the sewage sample sequentially drops into the accommodating groove 131 of the drawer tray 130. That is, in the process of opening the cover 120 by rotating the cover 120, the cover 120 triggers the sampling cups 700 containing the sewage samples to drop onto the tray 130 in sequence, after the cover 120 is opened, the operator can directly take away the tray 130, samples collected by different time nodes are contained in the sampling cups 700 on the tray 130, so that the representativeness of the sewage samples can be ensured, and the accuracy and the reliability of the detection result can be ensured.

Referring to fig. 1,2 and 12, the embodiment of the present application further discloses a sewage discharge system, which includes a sewage container 10, a sewage manifold 20, a sewage manifold 30, a sampling manifold 40 and the aforementioned sewage sampling device, wherein at least two sewage manifolds 20 are connected in parallel between the sewage container 10 and the sewage manifold 30. Moreover, the liquid inlet ports of the two different sewage pipes 20 are distributed along the height direction of the sewage container 10, that is, the two different sewage pipes 20 are connected at different heights of the sewage container 10, so that sewage at different depths in the sewage container 10 can be collected through the different sewage pipes 20. In a further alternative embodiment, the first valve 60a for controlling the on-off of the sewage branch pipe 20 is arranged on the sewage branch pipe 20, and by selectively opening different sewage branch pipes 20, the sample collection of sewage with different liquid levels in the sewage container 10 can be realized, so that the sewage sample is more representative, and meanwhile, the distribution condition of the sewage in the sewage container 10 can be statistically analyzed through detection data.

The sewage draining main pipe 30 is connected to one end of the sampling branch pipe 40, the liquid inlet 610 of the overflow container 600 is connected to the other end of the sampling branch pipe 40, the second valve 60b for controlling the on-off of the sewage draining main pipe 30 is arranged on the sewage draining main pipe 30, the third valve 60c for controlling the on-off of the sampling branch pipe 40 is arranged on the sampling branch pipe 40, under the condition that the third valve 60c is opened, sewage in the sewage draining main pipe 30 can flow into the overflow container 600 through the sampling branch pipe 40 and the liquid inlet 610, and when the liquid level in the overflow container 600 exceeds the liquid inlet of the overflow pipe 620, the sewage overflows into the sampling box 100 and is collected by the sampling cup 700.

In a further technical solution, the sewage draining system may further include a return pipe 50, one end of the return pipe 50 is connected to the liquid outlet 630 of the overflow container 600, and the other end of the return pipe 50 may be connected to the sewage container 10 for re-draining, or the other end of the return pipe 50 may be connected to the sewage treating system for re-treating, so as to avoid the situation that the sewage sample is inaccurate due to the residual sewage in the pipeline entering the sampling box 100, and the return pipe 50 is provided with a fourth valve 60d for controlling the on-off of the return pipe 50, and the sewage in the overflow container 600 may be returned to the sewage container 10 or the sewage treating system by opening and closing the fourth valve 60 d.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.

Claims (10)

1. The sewage sampling device is characterized by comprising a sampling box (100), a turntable (200), a cup holder (300), a cup falling mechanism (400), a motor (500) and an overflow container (600); wherein:

the rotary table (200) is rotatably arranged in the sampling box (100), a plurality of cup falling openings (211) distributed along the circumferential direction of the rotary table (200) are formed in the rotary table (200), the cup holders (300) are arranged above the rotary table (200), and a plurality of sampling cups (700) are stacked in the cup holders (300) along the height direction;

The motor (500) is connected with the rotary table (200) to drive the rotary table (200) to rotate, the rotary table (200) is connected with the cup dropping mechanism (400), and the cup dropping mechanism (400) is configured to stir the sampling cup (700) positioned at the bottom layer to drop into the cup dropping opening (211) after the rotary table (200) rotates for a preset angle;

The overflow container (600) is provided with a liquid inlet (610), an overflow pipe (620) and a liquid outlet (630), the liquid inlet of the overflow pipe (620) is positioned between the liquid inlet (610) and the liquid outlet (630), at least part of the overflow pipe (620) stretches into the sampling box (100), and the liquid outlet of the overflow pipe (620) corresponds to the cup falling opening (211).

2. The wastewater sampling device according to claim 1, wherein the turntable (200) comprises a turntable base (210), a first gear (220) and a first shaft (230), the turntable base (210) and the first gear (220) being coaxially fixed on the first shaft (230);

The cup falling mechanism (400) comprises a second shaft rod (410) and a spiral blade (420) arranged on the second shaft rod (410), a cup rim (710) protruding radially is arranged at the cup opening of the sampling cup (700), a part of the spiral blade (420) stretches into a space between the cup rim (710) of the sampling cup (700) positioned at the bottom layer and the cup rim (710) of the sampling cup (700) positioned at the secondary bottom layer, and the second shaft rod (410) is in transmission fit with the first gear (220) through a gear transmission mechanism (800).

3. The device according to claim 2, wherein the gear transmission mechanism (800) comprises a toothed ring (810) and a second gear (820), the cup holder (300) is arranged in the toothed ring (810) in a penetrating manner, the first gear (220) is meshed with an outer ring of the toothed ring (810), the second gear (820) is meshed with an inner ring of the toothed ring (810), and the second gear (820) is fixedly sleeved on the second shaft (410).

4. A sewage sampling device according to claim 3, wherein the number of the cup dropping mechanisms (400) is three, and the three cup dropping mechanisms (400) are uniformly distributed along the circumferential direction of the cup holder (300).

5. The sewage sampling device according to any one of claims 1 to 4, wherein the overflow pipe (620) comprises a first pipe section (621) and a second pipe section (622) connected to the first pipe section (621), the second pipe section (622) is bent relative to the first pipe section (621), and the first pipe section (621) and the second pipe section (622) are each arranged obliquely in the height direction.

6. The sewage sampling device according to any one of claims 1 to 4, further comprising a clamping and releasing mechanism (900), wherein the clamping and releasing mechanism (900) is disposed at the cup falling opening (211) to clamp the sampling cup (700) or release the sampling cup (700), and the clamping and releasing mechanism (900) comprises a clamping component and a releasing component, wherein:

The clamping assembly comprises two clamping arms (911) and an elastic piece, wherein the two clamping arms (911) are rotationally connected, the elastic piece is arranged at the rotational connection part of the two clamping arms (911), and the elastic piece is configured to apply elastic acting force to the two clamping arms (911) so that the two clamping arms (911) form a clamping state;

The release assembly comprises two poking sheets (921) and a pin shaft (922), one ends of the poking sheets (921) are rotationally connected, the pin shaft (922) is arranged at the rotationally connected position of the two poking sheets (921), the other ends of the two poking sheets (921) are rotationally connected with the two clamping arms (911) respectively, and when the pin shaft (922) is configured to be subjected to thrust, the two poking sheets (921) are pushed to rotate back to enable the two clamping arms (911) to rotate back to form an open state.

7. The wastewater sampling device of claim 6, wherein the sampling tank (100) comprises a tank body (110), a tank cover (120), and a tray (130), wherein:

The box body (110) is provided with a containing cavity and an opening communicated with the containing cavity, and the box cover (120) is rotatably arranged on the box body (110) so as to shield the opening or enable the opening to be in an exposed state;

The drawer disc (130) is positioned below the turntable (200), the drawer disc (130) is provided with a containing groove (131) corresponding to the cup falling opening (211), and the sampling cup (700) released by the clamping and releasing mechanism (900) can fall into the containing groove (131);

During the process of switching the box cover (120) from the closed state to the open state, the box cover (120) is contacted with at least one pin shaft (922) and applies thrust to the pin shaft (922), so that the two clamping arms (911) are rotated back to form an open state.

8. The sewage sampling device according to claim 7, wherein the tank cover (120) comprises a tank cover body (121) and a trigger member (122) connected to the tank cover body (121), the trigger member (122) is provided with a radially inward protruding abutment portion (122 a), and the abutment portion (122 a) is contactable with at least one pin shaft (922) along with rotation of the tank cover body (121) and applies a pushing force to the pin shaft (922).

9. The device according to claim 8, characterized in that one of the tank (110) and the trigger (122) is provided with a chute (111), the other one is provided with a guide (122 b) slidingly cooperating with the chute (111);

The sliding chute (111) comprises a communicating avoidance section (111 a) and an extension section (111 b), the extension section (111 b) extends along the circumferential direction of the box body (110), the avoidance section (111 a) is bent relative to the extension section (111 b), the guide part (122 b) is positioned in the avoidance section (111 a) under the condition that the box cover (120) is in a closed state, the abutting part (122 a) is enabled to avoid the rotating track of the pin shaft (922), and when the box cover (120) is switched from a closed state to an open state, the guide part (122 b) slides into the extension section (111 b), so that the abutting part (122 a) contacts with at least one pin shaft (922) and applies thrust to the pin shaft (922).

10. A sewage discharge system, characterized by comprising a sewage container (10), a sewage discharge branch pipe (20), a sewage discharge main pipe (30), a sampling branch pipe (40) and the sewage sampling device according to any one of claims 1 to 9, wherein:

The at least two pollution discharge branch pipes (20) are connected in parallel between the sewage container (10) and the pollution discharge main pipe (30), and liquid inlet ports of the at least two pollution discharge branch pipes (20) are distributed along the height direction of the sewage container (10);

One end of the sampling branch pipe (40) is connected with the sewage main pipe (30), and the other end of the sampling branch pipe (40) is connected with a liquid inlet (610) of the overflow container (600).