CN212459636U - Road surface runoff dangerous chemical water quality safety detection controller - Google Patents
Road surface runoff dangerous chemical water quality safety detection controller Download PDFInfo
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- CN212459636U CN212459636U CN202020876873.XU CN202020876873U CN212459636U CN 212459636 U CN212459636 U CN 212459636U CN 202020876873 U CN202020876873 U CN 202020876873U CN 212459636 U CN212459636 U CN 212459636U
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Abstract
The utility model discloses a road surface runoff dangerous chemical water quality safety detection controller, including controller body, plane valve and electronic control system, the controller body includes fixed bolster and the lid of connecting in the fixed bolster upper end, the plane valve is including locating the inlet on the lid, locate the slide rail on the fixed bolster, with slide rail single degree of freedom sliding connection's sliding bracket, through hinge and sliding bracket articulated movable valve plate and locating part and the linear drive component of fixed bolster, be equipped with notch and the sealing pad board that matches with the inlet on the movable valve plate, the sealing pad board is located movable valve plate up end and sets up adjacent with the notch, when the linear drive component stretches out and stops to the dead point, the inlet is closed; the electronic control system detects the surface runoff water quality and controls the linear driving component to extend or retract. The utility model discloses can the normal or abnormal road surface runoff flow direction of automatic control, protect peripheral sensitive water environmental safety.
Description
Technical Field
The utility model relates to an utilize quality of water safety inspection technique, dangerous chemical detection technique, communication technology and automatic control technique, take precautions against the equipment that road surface runoff dangerous chemical or road surface rain sewage leaked and cause all ring edge borders to pollute, in particular to road surface runoff dangerous chemical quality of water safety inspection controller.
Background
At present, as more and more vehicles carrying dangerous chemicals are transported on road, the types of the transported dangerous chemicals are more and more complex. On the other hand, in the process of constructing road traffic infrastructure, some roads inevitably pass through some water environment sensitive areas under the condition that the route planning cannot be adjusted, such as: water source protection areas, natural protection areas, wetland protection areas and the like. According to relevant regulations, in order to avoid leakage accidents caused by dangerous chemical vehicle loading in the road operation process, which causes pollution to water source areas and rivers, for roads passing through water source protection areas, environmental protection departments require that the dangerous chemical leakage is considered for road surface runoff, and that the collection or filtration treatment of the initial rainwater runoff of the road surface is required.
In addition, with the rapid development of chemical industry in recent years, the number of enterprises in chemical industry parks increases, and the types, the yield and the use amount of toxic and harmful chemicals sharply increase. Although a series of measures are taken by a plurality of enterprises in the aspect of chemical environment protection, the discharge amount of chemical pollutants is effectively controlled, the enterprises can generate the phenomena of leakage, overflow and drip in the processes of production, storage and transportation of dangerous chemicals, various chemical substances accumulated on the ground surface of a plant area are washed by rainwater in rainfall to form initial polluted rainwater runoff, and if the rainwater is not controlled and treated in time, the environmental safety is threatened greatly by discharging the rainwater to the surrounding area. The design scheme of the environmental protection department for the chemical project needs to fully consider the collecting and disposing measures of 'clean sewage' in the accident state, and the sewage is unqualified to be treated and cannot be discharged.
Therefore, there is an urgent need for a controller for detecting hazardous chemicals in road surface runoff and water quality safety, which can distinguish normal or abnormal road surface runoff, detect and control leakage of hazardous chemicals in time, protect the environmental safety of surrounding sensitive water, and simultaneously has special requirements on the collection time of initial rainwater runoff, so as to realize that the initial rainwater runoff is controlled and collected according to different time periods.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a road surface runoff dangerous chemicals quality of water safety inspection controller realizes particularly through following technical scheme:
the utility model relates to a controller for detecting the water quality safety of pavement runoff dangerous chemicals, which comprises a controller body, a plane valve and an electronic control system, the controller body comprises a fixed bracket and a cover body connected with the upper end of the fixed bracket, the planar valve comprises a liquid inlet arranged at the upper end of the cover body, a slide rail arranged on the fixed bracket, a sliding bracket in single-degree-of-freedom sliding connection with the slide rail, a movable valve plate hinged with the sliding bracket through a hinge, a limiting piece arranged on the fixed bracket and used for limiting the movable valve plate, and a linear driving component used for driving the sliding bracket, the movable valve plate is provided with a notch matched with the liquid inlet and a sealing backing plate, the sealing backing plate is positioned on the upper end surface of the movable valve plate and is arranged adjacent to the notch, when the linear driving component extends out and stops to a stop point, the movable valve plate moves upwards under the action of the limiting piece and the hinge, and the sealing base plate seals the liquid inlet when the movable valve plate stops moving; the electronic control system detects the surface runoff water quality and controls the linear driving component to extend or retract.
The preferred scheme is as follows: the electronic control system comprises a sampling device and a liquid detection unit, wherein the sampling device is positioned above the liquid detection unit, the liquid detection unit comprises a liquid detection box, and a water quality detection sensor and a siphon pipe which are respectively arranged at two sides of the liquid detection box, the water quality detection sensor is arranged at the bottom of the liquid detection box, the siphon pipe is positioned in the liquid detection box, a siphon inlet and a water quality detection sensor probe are arranged at a distance, and the siphon inlet is positioned above the water quality detection sensor probe; and the bottom of the liquid detection box is provided with a small drainage hole.
The preferred scheme is as follows: the sampling device comprises a drainage plate, a drainage groove arranged on the drainage plate and a sampling hole arranged on the drainage plate; the cover body is provided with a slotted hole for installing the drainage plate, the sampling device further comprises a filter screen, and the filter screen is covered on the upper end of the sampling hole.
The preferred scheme is as follows: and an auxiliary mechanism for resetting the movable valve plate is arranged between the movable valve plate and the sliding support.
The preferred scheme is as follows: the linear driving component is an electric push rod, and the electric push rod comprises a motor and an electric push rod body.
The preferred scheme is as follows: the road surface runoff dangerous chemical water quality safety detection controller also comprises a sealing lattice with an opening at the upper part, a motor and an electronic control system of an electric push rod are arranged in the sealing lattice, the push rod of the electric push rod is connected with the sliding support, and the joint of the electric push rod body and the sealing lattice is sealed; the cover body is provided with an access window, the access window corresponds to the upper opening of the sealing lattice, and a movable cover plate is arranged at the upper end of the access window.
The preferred scheme is as follows: the electronic control system also comprises a control unit, a data transmission unit, a liquid monitoring data analysis module, a control module and a communication module;
the data transmission unit, the liquid monitoring data analysis module and the control unit are in two-way communication and are used for acquiring and analyzing information transmitted by the water quality detection sensor and analyzing monitoring data of an analysis position;
the control module and the control unit pass through in a one-way mode and are used for controlling the starting and stopping of the linear driving component;
the communication module is connected with an external communication host and used for realizing remote data transmission.
The preferred scheme is as follows: the controller for detecting the water quality safety of the pavement runoff dangerous chemicals further comprises a manual control mechanism for opening the plane valve in an emergency mode.
The preferred scheme is as follows: the manual control mechanism comprises an outer support, an inner support, a locking support and a rope, the outer support is fixedly connected with the fixed support, the inner support is in single-degree-of-freedom sliding connection with the outer support, a pin shaft is arranged on the inner support, the locking support is in single-degree-of-freedom rotating connection with the inner support through the pin shaft, an elastic element is further arranged between the locking support and the inner support, the elastic element is located on one side away from the pin shaft, a boss used for blocking the locking support is arranged on the outer support, the side end below the locking support is tightly pressed on the boss, one end of the rope is connected to the upper end of the locking support and is led out, and when the end of the rope is pulled to be led out, the side end.
The utility model provides a road surface runoff control system based on dangerous chemical water quality safety inspection controller of road surface runoff, including mass flow groove, guiding gutter, hazardous articles holding tank and side ditch and the rapid trough that is used for collecting highway road surface liquid, the income liquid mouth and the mass flow groove of guiding gutter are connected, and the liquid outlet of guiding gutter is connected with the side ditch through the rapid trough, the guiding gutter middle part is located to dangerous chemical water quality safety inspection controller of road surface runoff, the hazardous articles holding tank is located road surface runoff dangerous chemical water quality safety inspection controller below.
The utility model has the advantages that: the movable valve plate is blocked the upward movement by the locating part and is made sealed the inlet by sealed backing plate, adopts this kind of mode that is close the translation to open or close the inlet for its overall structure attenuation of planar valve can be realized, is convenient for arrange in the channel with the channel matching convenience, and the drainage of being more convenient for of relative circular pipeline type control valve more is fit for the on-the-spot in-service behavior of highway. The utility model discloses liquid detection unit adopts the siphon mode to drain the water sample in the detection box, and the water sample can in time be updated in the ingenious setting of cooperation water quality testing sensor probe and siphon mouth position, very big improvement the accuracy and the corresponding speed that detect. Other advantageous effects of the present invention will be further described with reference to the following embodiments.
Drawings
The invention will be further described with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic of a planar valve structure;
FIG. 3 is a schematic structural diagram of a detecting unit;
FIG. 4 is a schematic view of a manual control mechanism;
fig. 5 is a schematic structural diagram of a pavement runoff treatment system.
Detailed Description
As shown in fig. 1-4: the utility model relates to a dangerous chemical water quality safety inspection controller of road surface runoff, including controller body 1, plane valve 5 and electronic control system 4, controller body 1 includes fixed bolster 101 and the lid 102 of connecting in fixed bolster 101 upper end, plane valve 5 includes the inlet 103 of locating the lid 102 upper end, locate slide rail 54 on fixed bolster 101, with slide rail 54 single degree of freedom sliding connection's sliding bracket 53, through the hinge with sliding bracket 53 articulated movable valve plate 52 and locate fixed bolster 101 and be used for spacing movable valve plate 52 locating part 55 and be used for driving the linear drive component 51 of sliding bracket 53, be equipped with on the movable valve plate 52 with notch and the sealing backing plate 56 of inlet 103 matching, sealing backing plate 56 be located movable valve plate 52 up end and with the adjacent setting of notch, when linear drive component 51 stretches out and stops to the dead point, the movable valve plate 52 moves upwards under the action of the limiting piece 55 and the hinge, and the sealing cushion plate 56 closes the liquid inlet 103 when the movement is stopped; the electronic control system 4 detects the surface runoff water quality and controls the linear driving member 51 to extend or retract. Preferably, the linear driving member 51 is an electric push rod including a motor 511 and an electric push rod body 512.
The road surface runoff dangerous chemical water quality safety detection controller is closed: when the linear driving member 51 is pushed forward by the instruction of the electronic control system 4, the linear driving member 51 pushes the sliding bracket 53 to slide forward on the slide rail 54 through the fixed hinge, and the movable valve plate 52 moves forward together with the sliding bracket 53. Due to the staggered stacking design of the movable valve plate 52 and the sliding support 53, when the movable valve plate 52 moves to the tail end, the movable valve plate is firstly blocked by the limiting part 55 at the tail end, so that the forward moving direction is changed into upward jacking, and the sealing backing plate 56 on the movable valve plate 52 blocks the liquid inlet 103 of the pavement runoff detection controller, thereby closing the pavement runoff dangerous chemical water quality safety detection controller. The road surface runoff dangerous chemical water quality safety detection controller is started: when the linear driving member 51 retracts backwards under the instruction of the electronic control system 4, the sliding support 53 is pulled by the fixed hinge to slide backwards on the sliding rail 54, the movable valve plate 52 falls under the action of gravity and a return spring and moves backwards along with the sliding support 53, the sealing gasket 56 on the movable valve plate 52 does not block the liquid inlet 103, and the notch at the upper end of the movable valve plate 52 is opposite to the liquid inlet 103, so that the controller for detecting the water quality safety of the road surface runoff dangerous chemicals is opened. Further, an auxiliary mechanism for returning the movable valve plate 52 is provided between the movable valve plate 52 and the sliding support 53, for example: the auxiliary mechanism may be provided according to the following specific scheme, but is not limited to this scheme, and preferably, the auxiliary mechanism includes a first ear seat 57 and a second ear seat 58 respectively provided on the movable valve plate 52 and the sliding support 53, and a spring is connected between the first ear seat 57 and the second ear seat 58. The auxiliary mechanism ensures that the movable valve plate 52 and the sliding support 53 move relatively more reliably and quickly, and is beneficial to quickly opening the plane valve 5.
Through the process, dangerous chemicals quality of water safety inspection controller of road surface runoff can have more the particular case to discharge different positions with surface gathered water according to the quality of water of difference, has realized "binary channels drainage" function promptly, and a passageway is used for the transfer passage of hazardous liquid specially, and another passageway is used for the drainage channel of normal rainwater runoff. Greatly changed lack the condition that the speed is got rid of to influence driving safety slowly by corresponding controller surface ponding among the current road surface runoff processing scheme, solved simultaneously that current road surface runoff processing scheme can only realize simple filtering capability singleness can not realize distinguishing the condition that discharges and collect in real time.
Preferentially: electronic control system 4 includes sampling device 2 and liquid detecting element 3, sampling device 2 is located liquid detecting element 3 top, liquid detecting element 3 includes liquid detection box 32, locates the water quality testing sensor 31 and the siphon 33 of liquid detection box 32 both sides respectively, water quality testing sensor 31 locates liquid detection box 32 bottom, and siphon 33 is located the inside siphon mouth of liquid detection box 32 and sets up and the siphon mouth is located water quality testing sensor 31 probe top with water quality testing sensor 31 probe interval. The siphon tube 33 ensures the removal of liquid in the liquid detection box 32, and the removal of liquid in the liquid detection box 32 can be realized by utilizing the liquid level difference and the siphon principle without additionally arranging a redundant electronic valve for assistance, so that the quick update of a water sample in the liquid detection box 32 is ensured, the structure is greatly simplified, and the manufacturing cost is reduced. The bottom of the liquid detection box is provided with a small drainage hole (not shown) for draining the residual water sample in the liquid detection box 32. Further, siphon mouth and 31 probe interval of water quality testing sensor set up and the siphon mouth is located water quality testing sensor 31 probe top, and the water sample in the liquid detection box 32 must advance the siphon mouth when discharging also namely must pass through water quality testing sensor 31 probe, can in time detect the water sample when liquid detection box 32 water sample is constantly renewed, has improved 3 response speed of liquid detecting element and has detected the accuracy. Further, the sampling device 2 comprises a drainage plate 22, a drainage groove 23 arranged on the drainage plate 22 and a sampling hole 24 arranged on the drainage plate 22; the cover body 102 is provided with a slot for installing the drainage plate 22, the sampling device 2 further comprises a filter screen 21, and the filter screen 21 covers the upper end of the sampling hole 24. In rainy days, when the road surface runoff flows through the drainage plate 22, a small part of the road surface runoff filters silt through the filter screen and flows into the liquid detection box 32 below through the sampling port. The drainage plate 22 is carved with drainage groove 23 to ensure that trace liquid can also flow into the liquid detection box 32 when the hazardous chemical substance leaks, so as to avoid missing detection or false detection.
To sum up, dangerous chemical quality of water safety inspection controller of road surface runoff can distinguish the leakage of normal or abnormal road surface runoff, in time detect and control danger article, protect peripheral sensitive water environmental safety.
Preferentially: a sealing grid 104 with an opening at the upper part is arranged on the fixed support 101, the motor 511 and the electronic control system 4 of the electric push rod are arranged in the sealing grid 104, the push rod of the electric push rod is connected with the sliding support 53, and the joint of the electric push rod body 512 and the sealing grid 104 is sealed; an access window is arranged on the cover body 102, the access window corresponds to the upper opening of the sealing lattice 104, and a movable cover plate 105 is arranged at the upper end of the access window. The provision of the sealing grid 104 and the access window protects the various electronic devices described below, while facilitating later maintenance.
Preferentially: the electronic control system 4 also comprises a control unit, a data transmission unit, a liquid monitoring data analysis module, a control module and a communication module; the data transmission unit and the liquid monitoring data analysis module are in two-way communication with the control unit and are used for acquiring and analyzing information transmitted by the water quality detection sensor 31 and analyzing monitoring data at an analysis position; the control module and the control unit pass through in a single direction and are used for controlling the start and stop of the linear driving component 51; the communication module is connected with an external communication host and used for realizing remote data transmission. Therefore, dangerous chemicals quality of water safety inspection controller of road surface runoff can also carry out real-time supervision and can give the host computer with the monitoring data transmission to road surface runoff besides can realizing above-mentioned function. The electronic control system 4 adopts the conventional control method which can realize the functions of the utility model, and the description is omitted here.
Preferentially: in order to prevent the road surface runoff dangerous chemical water quality safety detection controller from being incapable of being opened under the conditions of power failure, equipment failure or emergency, a manual control mechanism 6 for opening the plane valve 5 in an emergency is arranged on the fixed support 101. This manual control mechanism 6 can adopt the utility model discloses in specific manual control mechanism 6, certainly can also be other emergency device. In this embodiment, the manual control mechanism 6 includes an outer bracket 64, an inner bracket 63, a locking bracket 61 and a rope, the outer bracket 64 is fixedly connected to the fixing bracket 101, the inner bracket 63 is slidably connected to the outer bracket 64 with a single degree of freedom, a pin 65 is disposed on the inner bracket 63, the locking bracket 61 is rotatably connected to the inner bracket 63 with a single degree of freedom through the pin 65, an elastic element 62 is further disposed between the locking bracket 61 and the inner bracket 63, the elastic element 62 is located on a side away from the pin 65, the outer bracket 64 is provided with a boss 66 for blocking the locking bracket 61, a lower side end of the locking bracket 61 is pressed against the boss 66, one end of the rope is connected to an upper end of the locking bracket 61 and is led out from the other end, and when the rope is pulled to be led out, the lower side end of the locking bracket 61 is separated. Under normal conditions, the lower side end of the locking bracket 61 is pressed against the boss 66, and is kept in a fixed state together with the outer bracket 64, and the inner bracket 63 is also kept fixed. Under normal conditions, the electric push rod controls the switch of the pavement runoff detection controller to be closed. If meet under the power failure or other emergency, the controller is unusual to operate or can not work, and field personnel can be through using the handle that resets to pull locking frame 61, and locking frame 61 upwards overturns under the effect of external force, locking frame 61 below side with boss 66 separation, the whole set of device of manual control mechanism 6 will move along outer support 64, continues to receive the effect of pulling force this moment, and the whole set of device of manual control mechanism 6 drives sliding support 53 and movable valve plate 5252 and moves backward together to the realization manual work is opened the dangerous chemicals water quality safety inspection controller of road surface runoff.
On the basis of the above-mentioned road surface runoff dangerous chemical water quality safety detection controller, the inventor also discloses a road surface runoff treatment system, as shown in fig. 5, specifically as follows: road surface runoff processing system is including the mass flow groove 7, guiding gutter 8, hazardous articles holding tank 9 and side ditch 10 and the rapid trough 11 that are used for collecting highway road surface liquid, and the income liquid mouth and the mass flow groove 7 of guiding gutter 8 are connected, and the liquid outlet of guiding gutter 8 is connected with side ditch 10 through the rapid trough 11, 8 middle parts of guiding gutter are located to road surface runoff hazardous chemicals water quality safety detection controller, hazardous articles holding tank 9 is located road surface runoff hazardous chemicals water quality safety detection controller below. The two states of opening or closing of the plane valve 5 realize a 'double-channel drainage' function, one channel is specially used for a conveying channel of dangerous liquid, and the other channel is used for a drainage channel of normal rainwater runoff. Plane valve 5 can be based on electronic control system 4 opens in real time or closes and carries out drainage respectively to ordinary rainwater and mixed sewage and collect and discharge, has not only reduced surface gathered water but also the very big rainwater that has reduced and the mixed condition of collecting of chemical sewage, has effectively avoided ordinary rainwater secondary pollution, has alleviated the pressure of the sewage treatment degree of difficulty and decontamination volume. Meanwhile, the method is favorable for timely detecting and controlling the leakage of dangerous chemicals and protecting the environmental safety of surrounding sensitive water bodies.
The utility model discloses also can realize the special requirement of initial stage rainfall runoff collection time through the switching of control road surface runoff dangerous chemicals quality of water safety inspection controller, realize that initial stage rainfall runoff controls and collects according to different time quantum.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (9)
1. The utility model provides a road surface runoff dangerous chemicals quality of water safety inspection controller, includes controller body, plane valve and electronic control system, its characterized in that: the controller body comprises a fixed support and a cover body connected to the upper end of the fixed support, the planar valve comprises a liquid inlet arranged at the upper end of the cover body, a slide rail arranged on the fixed support, a sliding support in single-degree-of-freedom sliding connection with the slide rail, a movable valve plate hinged with the sliding support through a hinge, a limiting piece arranged on the fixed support and used for limiting the movable valve plate, and a linear driving component used for driving the sliding support, wherein the movable valve plate is provided with a notch matched with the liquid inlet and a sealing cushion plate, the sealing cushion plate is positioned on the upper end surface of the movable valve plate and is arranged adjacent to the notch, and when the linear driving component extends out and stops to a stop point, the movable valve plate reversely moves under the action of the limiting piece; the electronic control system detects the surface runoff water quality and controls the linear driving component to extend or retract.
2. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to claim 1, characterized in that: the electronic control system comprises a sampling device and a liquid detection unit, wherein the sampling device is positioned above the liquid detection unit, the liquid detection unit comprises a liquid detection box, and a water quality detection sensor and a siphon pipe which are respectively arranged at two sides of the liquid detection box, the water quality detection sensor is arranged at the bottom of the liquid detection box, the siphon pipe is positioned in the liquid detection box, a siphon inlet and a water quality detection sensor probe are arranged at a distance, and the siphon inlet is positioned above the water quality detection sensor probe; and the bottom of the liquid detection box is provided with a small drainage hole.
3. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to claim 2, wherein: the sampling device comprises a drainage plate, a drainage groove arranged on the drainage plate and a sampling hole arranged on the drainage plate; the cover body is provided with a slotted hole for installing the drainage plate, the sampling device further comprises a filter screen, and the filter screen is covered on the upper end of the sampling hole.
4. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to claim 1, characterized in that: and an auxiliary mechanism for resetting the movable valve plate is arranged between the movable valve plate and the sliding support.
5. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to claim 1, characterized in that: the linear driving component is an electric push rod, and the electric push rod comprises a motor and an electric push rod body.
6. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to claim 5, wherein: the electric push rod is connected with the sliding support, and the joint of the electric push rod body and the sealing grid is sealed; the cover body is provided with an access window, the access window corresponds to the upper opening of the sealing lattice, and a movable cover plate is arranged at the upper end of the access window.
7. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to any one of claims 2 to 5, wherein: the electronic control system also comprises a control unit, a data transmission unit, a liquid monitoring data analysis module, a control module and a communication module;
the data transmission unit, the liquid monitoring data analysis module and the control unit are in two-way communication and are used for acquiring and analyzing information transmitted by the water quality detection sensor and analyzing monitoring data of an analysis position;
the control module and the control unit pass through in a one-way mode and are used for controlling the starting and stopping of the linear driving component;
the communication module is connected with an external communication host and used for realizing remote data transmission.
8. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to claim 1, characterized in that: the emergency opening device further comprises a manual control mechanism for opening the plane valve in an emergency mode.
9. The controller for detecting the water quality safety of the road surface runoff dangerous chemicals according to claim 8, wherein: the manual control mechanism comprises an outer support, an inner support, a locking support and a rope, the outer support is fixedly connected with the fixed support, the inner support is in single-degree-of-freedom sliding connection with the outer support, a pin shaft is arranged on the inner support, the locking support is in single-degree-of-freedom rotating connection with the inner support through the pin shaft, an elastic element is further arranged between the locking support and the inner support, the elastic element is located on one side away from the pin shaft, a boss used for blocking the locking support is arranged on the outer support, the side end below the locking support is tightly pressed on the boss, one end of the rope is connected to the upper end of the locking support and is led out, and when the end of the rope is pulled to be led out, the side end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020876873.XU CN212459636U (en) | 2020-05-22 | 2020-05-22 | Road surface runoff dangerous chemical water quality safety detection controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020876873.XU CN212459636U (en) | 2020-05-22 | 2020-05-22 | Road surface runoff dangerous chemical water quality safety detection controller |
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| CN212459636U true CN212459636U (en) | 2021-02-02 |
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| CN202020876873.XU Active CN212459636U (en) | 2020-05-22 | 2020-05-22 | Road surface runoff dangerous chemical water quality safety detection controller |
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