Environmental water sample detection device

Abstract

The invention discloses an environmental water sample detection device, and belongs to the technical field of water sample detection, the environmental water sample detection device comprises a pump mechanism and a front end processing structure, the front end processing structure comprises a rear housing, a filter screen unit is arranged in the rear housing, a sensing return control unit is arranged at the end part of the rear housing, a control module and an elastically telescopic rebound module are respectively arranged on the housing, and the control module is connected with the control module. The control module comprises two trigger terminals, and one trigger terminal is connected with the springback module. In the sampling process of water quality detection, when a filter screen unit in a front-end processing structure is blocked, under the action of negative pressure suction force of a pump mechanism, the filter screen unit which elastically retracts is in contact with a springback module and drives two trigger terminals to be in contact through the springback module; the gate valve structure is triggered to move back and forth and scrape impurities accumulated on the surface of the filter screen unit, so that the water sample detection work is smoothly carried out, the water sample detection efficiency is guaranteed, and the reliability of a water sample detection result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water sample detection, and more specifically, to an environmental water sample detection device. Background Art

[0002] Ecological environment monitoring is one of the important links of ecological protection. It can enable people to quickly grasp various environmental information and provide a scientific basis for environmental protection. The monitoring of water resources is an important manifestation of ecological environment monitoring. In order to understand and grasp the actual situation of water quality, testers usually conduct sampling and testing at different sampling points regularly or as needed. In order to improve the accuracy of water intake, reciprocating water pumps are usually used to sample river water, lake water or water in factory sewage treatment pools.

[0003] When water is pumped by an existing reciprocating water pump during the water sample detection process, it is necessary to filter water through a filter screen installed at the water inlet of the water pump. When the water sample detection task is performed in a relatively complex outdoor aquatic environment, impurities are easily accumulated on the filter screen and clog the filter screen, causing difficulty in drawing liquid. When the filter screen is clogged, the method often adopted by the detection personnel is to fish the filter screen out of the water and remove the impurities accumulated on the filter screen, and then put the cleaned filter screen back into the water for sampling.

[0004] This not only greatly increases the physical exertion of the testers and reduces the efficiency of water quality testing, but also the water sampling location and depth are prone to change when resampling, which will in turn have a certain impact on the accuracy of the water quality test results.

[0005] In view of this, we propose an environmental water sample detection device. Summary of the invention

[0006] Technical problem to be solved: The purpose of the present invention is to provide an environmental water sample detection device to solve the technical problems raised in the above-mentioned background technology.

[0007] Technical solution: The technical solution of the present invention provides an environmental water sample detection device, including a pump mechanism and a front-end processing structure arranged at the inlet of the pump mechanism, the front-end processing structure includes a rear cover shell, an elastically retractable filter unit is arranged inside the rear cover shell, and a sensing return control unit is arranged at the end of the rear cover shell. The sensing return control unit includes a shell member connected to the end of the rear cover shell, and a control module and an elastically retractable rebound module are respectively arranged on the shell member. The control module includes two trigger terminals, and one of the trigger terminals is connected to the rebound module; The opening at the end of the rear cover is connected to the front cover, and a gate valve structure is provided on the front cover. A bypass standby pipeline unit is fixedly connected between the front cover and the rear cover. The gate valve structure includes a gate plate slidably inserted on the front cover and an electric drive component that can drive the gate plate to reciprocate. A scraper with elasticity and close to the surface of the filter unit is provided on one end of the gate plate extending into the inner cavity of the front cover. A blocking seat is connected to the gate plate, and when the gate valve structure is in an initial state, the blocking seat blocks the connection between the bypass standby pipeline unit and the front cover; When the elastically retracted filter unit contacts the rebound module and drives the two trigger terminals to contact through the rebound module, the trigger electric drive drives the gate to move back and forth once.

[0008] As an optional solution of the technical solution of the present invention, the pump mechanism includes a reciprocating water pump body, and the reciprocating water pump body is connected to a controller; A water suction hose is connected to the input end of the reciprocating water pump body, and a water discharge hose is connected to the output end of the reciprocating water pump body; One end of the water suction hose away from the reciprocating water pump body is fixedly connected to the end of the rear cover; The outer shell member includes an insulating shell connected to the end of the rear cover shell, and one end of the insulating shell extends into the inner cavity of the rear cover shell, and the other end extends from the end of the rear cover shell; An opening of one end of the insulating shell extending from the end of the rear cover shell is sealed and connected with an insulating end cover.

[0009] As an optional solution of the technical solution of the present invention, the filter unit includes an annular base and a filter plate; A plurality of spring telescopic rods are evenly connected between the annular base and the filter hole plate; A synchronous pressure rod is connected to one side of the filter plate close to the annular base; A receiving groove matched with the annular base is provided in the opening at the end of the rear cover shell, the filter unit is located in the receiving groove, and the filter plate is sealed and slid in the receiving groove; When the front cover shell is connected to the end opening of the rear cover shell, the end of the front cover shell fits with the end of the filter hole plate in the filter unit.

[0010] As an optional solution of the technical solution of the document of the present invention, the rebound module includes a pressure-bearing rod that is sealingly and slidably inserted at the end of the insulating shell and a fixing seat fixed in the inner cavity of the insulating shell; One end of the pressure rod extends into the inner cavity of the insulating shell and is connected to a passive slide seat that slides in the inner cavity of the insulating shell, and the other end of the pressure rod extends from the end of the insulating shell and faces the synchronous pressure rod in the filter unit; An insulating retract rod is slidably inserted on the fixing seat, and one end of the insulating retract rod is slidably inserted into the opening of the end of the pressure rod and connected to a first spring, and one end of the first spring away from the insulating retract rod is connected to the end of the inner cavity of the pressure rod; A second spring is connected between the fixed seat and the passive sliding seat.

[0011] As an optional solution of the technical solution of the present invention, the control module is located in the housing member, and the control module includes a control circuit board connected to the insulating end cover in the housing member; A signal transmitter is connected to the control circuit board; The control module also includes two trigger terminals arranged opposite to each other; One of the trigger terminals is connected to the control circuit board, and the other trigger terminal is connected to one end of the pressure bearing rod close to the fixing seat; When the second spring in the rebound module is in an initial relaxed state, the two trigger terminals are not in contact with each other.

[0012] As an optional solution of the technical solution of the present invention, both trigger terminals are electrically connected to the control circuit board; When the two trigger terminals are in contact, the trigger control circuit board controls the signal transmitter to send a control signal to the controller in the pump mechanism.

[0013] As an optional solution of the technical solution of the present invention, when the second spring in the rebound module is in an initial relaxed state, the end of the pressure-bearing rod abuts against the end of the synchronous pressure-applying rod.

[0014] As an optional solution of the technical solution of the document of the present invention, the scraping member includes a hollow extension portion; A strip scraper seat is slidably inserted into the opening at the end of the hollow extension part, and a third spring is connected to one end of the strip scraper seat extending into the opening at the end of the hollow extension part, and the other end of the third spring is connected to the end of the inner cavity of the hollow extension part; One end of the strip scraper seat away from the third spring is closely attached to the surface of the filter hole plate in the filter unit; The electric drive component is a waterproof electric cylinder, and the electric drive component and the reciprocating water pump body are electrically connected to the controller; The fixed end of the electric drive component is connected to the outer wall of the front cover; One end of the gate extends into the inner cavity of the front cover shell and is respectively connected to the hollow extension portion and the blocking seat, and the other end of the gate extends from the outer wall of the front cover shell and is connected to the free end of the electric drive component.

[0015] As an optional solution of the technical solution of the document of the present invention, the bypass spare pipeline unit includes a bypass spare pipeline and a drainage hose; One end of the bypass standby pipeline is fixedly connected to the side wall of the front housing, and one end of the drainage hose is fixedly connected to the side wall of the rear housing; A narrow opening is provided on the backup bypass pipeline, and a collecting cover is rotatably connected to the other end of the drainage hose in a sealing manner, and a detachable sealing cover of the end of the collecting cover away from the drainage hose is closed on the end of the backup bypass pipeline away from the front cover shell; The interior of the collection hood is connected with a filter screen.

[0016] As an optional solution of the technical solution of the document of the present invention, when the gate valve structure is in the initial state, the blocking seat blocks the connection between the bypass backup pipeline and the front cover shell in the bypass backup pipeline unit, and a through groove for the blocking seat to pass through is opened on the bottom wall of the inner cavity of the front cover shell.

[0017] Beneficial effects: One or more technical solutions provided in the technical solution of the present invention have at least the following technical effects or advantages: 1. During the sampling process of water quality detection, when the filter unit in the front-end processing structure is blocked, under the action of the negative pressure suction of the pump mechanism, the elastically retracted filter unit contacts the rebound module and drives the two trigger terminals to contact through the rebound module. The trigger control circuit board controls the signal transmitter to send a control signal to the controller in the pump mechanism, so that the controller controls the electric drive component in the gate valve structure to open, and then the reciprocating gate valve structure scrapes off the impurities accumulated on the surface of the filter unit, thereby realizing active cleaning of the blocked filter unit, so that the water sample detection work can be carried out smoothly, which not only ensures the efficiency of water sample detection, but also helps to improve the reliability of water sample detection results.

[0018] 2. When the electric drive drives the scraper in the gate valve structure to scrape off the impurities accumulated on the surface of the filter unit, the sealing seat is gradually removed from the connection between the bypass standby pipeline and the front cover in the bypass standby pipeline unit, so that the end opening of the bypass standby pipeline is exposed, and under the action of the negative pressure suction inside the bypass standby pipeline unit, the scraped impurities are continuously sucked into the bypass standby pipeline unit, so that when the filter unit is blocked, the water flow pressure can be dispersed to avoid the interruption of the sampling process in the water sample detection due to the obstruction of the normal pumping of the pump mechanism, thereby reducing the operating burden of the device and ensuring the efficiency of the water sample detection.

[0019] 3. After the electric drive drives the scraper in the gate valve structure to scrape off the impurities accumulated on the surface of the filter unit, the scraped impurities will not flow again to the cleaned area in the filter unit under the action of the water flow due to the blocking effect of the gate plate and the scraper in the gate valve unit, and when the gate valve structure cleans the impurities on the surface of the filter unit, the bypass spare pipeline unit is gradually opened, and then under the action of the negative pressure suction inside the bypass spare pipeline unit, the scraped impurities are continuously sucked into the bypass spare pipeline unit, which helps to more thoroughly remove the impurities accumulated on the surface of the filter unit, enhance the cleaning effect, reduce the number of repeated cleaning times, and enable the device to quickly restore to the best working state, ensuring the efficiency of water sample detection.

[0020] 4. When the gate plate and the scraper in the gate valve structure are driven by the electric drive component to cover the entire surface of the filter unit, the gate valve structure is then driven by the electric drive component to gradually restore to its initial state, so that the cleaned filter unit is gradually exposed, so that in the process of restoring the device to the best working state, the narrow mouth in the bypass spare pipeline unit is used to hinder the impurities collected inside the collection cover from flowing back to the front cover shell, thereby reducing the possibility of impurities flowing back to the surface of the filter unit, reducing the risk of the filter unit being blocked again in a short time after cleaning, reducing the frequency of cleaning the filter unit by the gate valve structure, reducing energy consumption, and helping to ensure the smooth flow of water samples, further improving the efficiency of water sample detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the front-end processing structure in the present invention.

[0023] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram of part A.

[0024] Figure 4 It is a side view of the overall structure of the present invention.

[0025] Figure 5 It is a side view of the front-end processing structure in the present invention.

[0026] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of part B.

[0027] Figure 7 It is a cross-sectional view of the front-end processing structure in the present invention.

[0028] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of part C in the middle.

[0029] Fig. 9 For the present invention Figure 7 A partial enlarged schematic diagram of part D in the middle.

[0030] Fig.10 It is a schematic diagram of the internal structure of the insulating shell in the present invention.

[0031] Description of the numbers in the figure: 100. Reciprocating water pump body; 101. Controller; 102. Suction hose; 103. Drain hose; 201, front cover; 202, bypass spare pipeline; 203, narrow mouth; 204, collecting cover; 205, drainage hose; 206, gate; 207, filter hole plate; 208, rear cover; 209, electric drive component; 210, blocking seat; 211, insulating shell; 213, insulating end cover; 214, annular base; 215, spring telescopic rod; 216, synchronous pressure rod; 217, hollow extension; 218, strip scraper seat; 220, pressure rod; 223, passive slide; 224, insulating retracting rod; 225, control circuit board; 226, trigger terminal; 227, signal transmitter. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Reference Figures 1 to 7, an embodiment of the present invention provides an environmental water sample detection device, including a pump mechanism and a front-end processing structure arranged at the inlet of the pump mechanism, the front-end processing structure includes a rear cover 208, an elastically retractable filter unit is arranged inside the rear cover 208, a sensing feedback control unit is arranged at the end of the rear cover 208, the sensing feedback control unit includes a shell member connected to the end of the rear cover 208, a control module and an elastically retractable rebound module are respectively arranged on the shell member, the control module includes two trigger terminals 226, and one of the trigger terminals 226 is connected to the rebound module; The opening at the end of the rear cover 208 is connected to the front cover 201, and a gate valve structure is provided on the front cover 201. A bypass standby pipeline unit is fixedly connected between the front cover 201 and the rear cover 208. The gate valve structure includes a gate plate 206 slidably inserted on the front cover 201 and an electric drive component 209 capable of driving the gate plate 206 to reciprocate. A scraper having elasticity and close to the surface of the filter unit is provided on one end of the gate plate 206 extending into the inner cavity of the front cover 201. A blocking seat 210 is connected to the gate plate 206, and when the gate valve structure is in an initial state, the blocking seat 210 blocks the connection between the bypass standby pipeline unit and the front cover 201. When the elastically retracted filter unit contacts the rebound module and drives the two trigger terminals 226 to contact each other through the rebound module, the trigger electric drive 209 drives the gate plate 206 to move back and forth once.

[0036] During the sampling process of water quality testing, when the filter unit in the front-end processing structure is blocked, under the action of the negative pressure suction of the pump mechanism, the elastically retracted filter unit contacts the rebound module and drives the two trigger terminals 226 to contact through the rebound module, triggering the gate valve structure to move back and forth and scrape off the impurities accumulated on the surface of the filter unit, so that the water sample testing work can be carried out smoothly, which not only ensures the efficiency of water sample testing, but also helps to improve the reliability of water sample testing results.

[0037] Reference Figure 1 and Figure 4 , an embodiment of the present invention provides an environmental water sample detection device, the pump mechanism includes a reciprocating water pump body 100, the reciprocating water pump body 100 is connected to a controller 101, and the reciprocating water pump body 100 is preferably a piston pump; A water suction hose 102 is connected to the input end of the reciprocating water pump body 100, and a water discharge hose 103 is connected to the output end of the reciprocating water pump body 100; One end of the water suction hose 102 away from the reciprocating water pump body 100 is fixedly connected to the end of the rear housing 208; The outer shell includes an insulating shell 211 connected to the end of the rear shell 208, and one end of the insulating shell 211 extends into the inner cavity of the rear shell 208, and the other end extends from the end of the rear shell 208; The opening of the insulating housing 211 extending from the end of the rear cover 208 is sealed and connected with an insulating end cap 213; The water sample is continuously extracted through the intermittent suction force generated by the reciprocating water pump body 100 in the pump mechanism, and before the water sample enters the interior of the water suction hose 102, the sand, gravel, leaves and other impurities mixed in the water sample are first filtered and intercepted by the front-end processing structure, and the water sample is then discharged into the sampling bottle through the drainage hose 103, and then the test personnel use the water quality testing instrument to test the collected water sample.

[0038] Reference Figure 1 , Figure 2 , Figure 7 , the embodiment of the present invention provides an environmental water sample detection device, the filter unit includes an annular base 214 and a filter plate 207; A plurality of spring telescopic rods 215 are evenly connected between the annular base 214 and the filter plate 207, wherein the spring telescopic rod 215 is a conventional rod-shaped device that can be elastically telescoped and adjusted in length, and will not be described in detail here; A synchronous pressure rod 216 is connected to one side of the filter plate 207 close to the annular base 214; A receiving groove matched with the annular base 214 is provided in the end opening of the rear cover 208, the filter unit is located in the receiving groove, and the filter plate 207 is sealed and slidable in the receiving groove; When the front cover 201 is connected to the end opening of the rear cover 208, the end of the front cover 201 fits with the end of the filter plate 207 in the filter unit.

[0039] Reference Figure 7 and Fig. 9 , an embodiment of the present invention provides an environmental water sample detection device, the rebound module includes a pressure-bearing rod 220 that is sealingly and slidably inserted at the end of the insulating shell 211 and a fixing seat fixed in the inner cavity of the insulating shell 211; One end of the pressure rod 220 extends into the inner cavity of the insulating shell 211 and is connected to a passive slide 223 that slides in the inner cavity of the insulating shell 211. The other end of the pressure rod 220 extends from the end of the insulating shell 211 and faces the synchronous pressure rod 216 in the filter unit. An insulating retract rod 224 is slidably inserted into the fixed seat, and one end of the insulating retract rod 224 is slidably inserted into the end opening of the pressure rod 220 and connected to a first spring, and one end of the first spring away from the insulating retract rod 224 is connected to the end of the inner cavity of the pressure rod 220; A second spring is connected between the fixed seat and the passive slide seat 223; When the second spring in the rebound module is in an initial relaxed state, the end of the pressure-bearing rod 220 abuts against the end of the synchronous pressure-applying rod 216 .

[0040] Reference Figures 4 to 7 , Fig. 9 , Fig.10 , an embodiment of the present invention provides an environmental water sample detection device, wherein a control module is located in a housing member, and the control module includes a control circuit board 225 connected to an insulating end cover 213 in the housing member; The control circuit board 225 is connected to a signal transmitter 227, which is a wireless transmission module. The wireless transmission module is an existing conventional device that uses radio signals for wireless transmission, and will not be described in detail here. The control module further includes two trigger terminals 226 disposed opposite to each other, and both trigger terminals 226 are electrically connected to the control circuit board 225; One of the trigger terminals 226 is connected to the control circuit board 225, and the other trigger terminal 226 is connected to one end of the pressure bearing rod 220 close to the fixing seat; When the second spring in the rebound module is in the initial relaxed state, the two trigger terminals 226 are not in contact with each other, and when the two 226 are not in contact with each other, the gate valve structure is in the initial state; When the two trigger terminals 226 are in contact, the trigger control circuit board 225 controls the signal transmitter 227 to send a control signal to the controller 101 in the pump mechanism.

[0041] During the sampling process of water quality detection, when the filter unit in the front-end processing structure is clogged, under the action of the negative pressure suction of the pump mechanism, the elastically retracted filter unit contacts the rebound module and drives the two trigger terminals 226 to contact through the rebound module. The trigger control circuit board 225 controls the signal transmitter 227 to send a control signal to the controller 101 in the pump mechanism, so that the controller 101 controls the electric drive component 209 in the gate valve structure to open, and then the reciprocating gate valve structure scrapes off the impurities accumulated on the surface of the filter unit, thereby realizing active cleaning of the clogged filter unit, so that the water sample detection work can be carried out smoothly, which not only ensures the efficiency of water sample detection, but also helps to improve the reliability of water sample detection results.

[0042] Reference Figure 7 and Figure 8 , an embodiment of the present invention provides an environmental water sample detection device, wherein the scraping member includes a hollow extension portion 217; A strip scraper seat 218 is slidably inserted into the end opening of the hollow extension portion 217, and a third spring is connected to one end of the strip scraper seat 218 extending into the end opening of the hollow extension portion 217, and the other end of the third spring is connected to the inner end of the hollow extension portion 217; One end of the strip scraper seat 218 away from the third spring is closely attached to the surface of the filter hole plate 207 in the filter unit; The electric drive component 209 is a waterproof electric cylinder, and the electric drive component 209 and the reciprocating water pump body 100 are both electrically connected to the controller 101; The fixed end of the electric drive component 209 is connected to the outer wall of the front cover 201; One end of the gate plate 206 extends into the inner cavity of the front cover shell 201 and is respectively connected to the hollow extension portion 217 and the blocking seat 210 , and the other end of the gate plate 206 extends from the outer wall of the front cover shell 201 and is connected to the free end of the electric drive component 209 .

[0043] Under the elastic force of the third spring, the end of the strip scraper seat 218 is tightly attached to the surface of the filter hole plate 207 in the filter unit, so that when the scraper moves back and forth driven by the gate plate 206, the strip scraper seat 218 tightly attached to the surface of the filter hole plate 207 can gradually scrape off the impurities accumulated on the surface of the filter hole plate 207 and causing the filter unit to be blocked.

[0044] Reference Figures 1 to 5 , the embodiment of the present invention provides an environmental water sample detection device, the bypass spare pipeline unit includes a bypass spare pipeline 202 and a drainage hose 205; One end of the bypass standby pipeline 202 is fixedly connected to the side wall of the front housing 201, and one end of the drainage hose 205 is fixedly connected to the side wall of the rear housing 208; A narrow opening 203 is provided on the backup bypass pipeline 202, and a collecting cover 204 is rotatably connected to the other end of the drainage hose 205 in a sealed manner, and a detachable sealing cover is detached from the end of the backup bypass pipeline 202 away from the front cover 201 at one end of the collection cover 204 away from the drainage hose 205, and the detachable connection method includes a threaded connection or a snap-on connection; The interior of the collecting cover 204 is connected with a filter screen, and the impurities entering the bypass standby pipeline unit are filtered and intercepted by the filter screen installed inside the collecting cover 204; When the gate valve structure is in the initial state, the blocking seat 210 blocks the connection between the bypass standby pipeline 202 and the front cover 201 in the bypass standby pipeline unit; Reference Figure 2 , Figure 3 A through slot is provided on the bottom wall of the inner cavity of the front cover shell 201, through which the blocking seat 210 can pass.

[0045] In the process of the electric drive component 209 driving the scraper in the gate valve structure to scrape off the impurities accumulated on the surface of the filter unit, the sealing seat 210 is gradually removed from the connecting point between the bypass backup pipeline 202 and the front cover 201 in the bypass backup pipeline unit, so that the end opening of the bypass backup pipeline 202 is exposed, and under the action of the negative pressure suction inside the bypass backup pipeline unit, the scraped impurities are continuously sucked into the bypass backup pipeline unit, so that when the filter unit is blocked, the water flow pressure can be dispersed to avoid the normal pumping of the pump mechanism being blocked and the interruption of the sampling process in the water sample detection, thereby reducing the operating burden of the device while ensuring the efficiency of the water sample detection.

[0046] After the electric drive component 209 drives the scraper in the gate valve structure to scrape off the impurities accumulated on the surface of the filter unit, under the blocking action of the gate plate 206 and the scraper in the gate valve unit, the scraped impurities will not flow again to the cleaned area in the filter unit under the action of the water flow, and when the gate valve structure cleans the impurities on the surface of the filter unit, the bypass spare pipeline unit is gradually opened, and then under the action of the negative pressure suction inside the bypass spare pipeline unit, the scraped impurities are continuously sucked into the bypass spare pipeline unit, thereby helping to more thoroughly remove the impurities accumulated on the surface of the filter unit, enhancing the cleaning effect, and reducing the number of repeated cleaning times, so that the device can quickly restore to the best working state and ensure the efficiency of water sample detection.

[0047] When the gate plate 206 and the scraper in the gate valve structure cover the entire surface of the filter unit under the drive of the electric drive component 209, the gate valve structure gradually recovers to its initial state under the drive of the electric drive component, so that the cleaned filter unit is gradually exposed, so that when the device is restored to its optimal working state, the narrow mouth 203 in the bypass spare pipeline unit hinders the impurities collected inside the collection cover 204 from flowing back to the front cover 201, thereby reducing the possibility of impurities flowing back to the surface of the filter unit, reducing the risk of the filter unit being blocked again in a short time after cleaning, reducing the frequency of cleaning the filter unit by the gate valve structure, reducing energy consumption, and helping to ensure the smooth flow of water samples, further improving the efficiency of water sample detection.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An environmental water sample detection device, characterized in that: It comprises a pump mechanism and a front-end processing structure arranged at the entrance of the pump mechanism, the front-end processing structure comprises a rear cover (208), an elastically retractable filter unit is arranged inside the rear cover (208), a sensing return control unit is arranged at the end of the rear cover (208), the sensing return control unit comprises a shell member connected to the end of the rear cover (208), a control module and an elastically retractable rebound module are respectively arranged on the shell member, the control module comprises two trigger terminals (226), and one of the trigger terminals (226) is connected to the rebound module; The opening at the end of the rear cover (208) is connected to the front cover (201), a gate valve structure is provided on the front cover (201), a bypass standby pipeline unit is fixedly connected between the front cover (201) and the rear cover (208), the gate valve structure comprises a gate plate (206) slidably inserted on the front cover (201) and an electric drive component (209) capable of driving the gate plate (206) to reciprocate, and a scraper having elasticity and closely attached to the surface of the filter unit is provided on one end of the gate plate (206) extending into the inner cavity of the front cover (201), a blocking seat (210) is connected to the gate plate (206), and when the gate valve structure is in an initial state, the blocking seat (210) blocks the connection between the bypass standby pipeline unit and the front cover (201); When the elastically retracted filter unit contacts the rebound module and drives the two trigger terminals (226) to contact each other through the rebound module, the trigger electric drive component (209) drives the gate plate (206) to move back and forth once.

2. The environmental water sample detection device according to claim 1, characterized in that: The pump mechanism comprises a reciprocating water pump body (100), and a controller (101) is connected to the reciprocating water pump body (100); The input end of the reciprocating water pump body (100) is connected to a water suction hose (102), and the output end of the reciprocating water pump body (100) is connected to a water discharge hose (103); One end of the water suction hose (102) away from the reciprocating water pump body (100) is fixedly connected to the end of the rear cover (208); The outer shell comprises an insulating shell (211) connected to the end of the rear cover shell (208), and one end of the insulating shell (211) extends into the inner cavity of the rear cover shell (208), and the other end extends from the end of the rear cover shell (208); An opening at one end of the insulating housing (211) extending from the end of the rear cover (208) is sealed and connected with an insulating end cover (213).

3. The environmental water sample detection device according to claim 1, characterized in that: The filter unit comprises an annular base (214) and a filter plate (207); A plurality of spring telescopic rods (215) are evenly connected between the annular base (214) and the filter plate (207); A synchronous pressure rod (216) is connected to one side of the filter plate (207) close to the annular base (214); A receiving groove matched with the annular base (214) is provided in the end opening of the rear cover shell (208), the filter unit is located in the receiving groove, and the filter hole plate (207) is sealed and slidable in the receiving groove; When the front cover shell (201) is connected to the end opening of the rear cover shell (208), the end of the front cover shell (201) fits with the end of the filter plate (207) in the filter unit.

4. The environmental water sample detection device according to claim 3, characterized in that: The rebound module comprises a pressure-bearing rod (220) sealingly and slidably inserted at the end of the insulating shell (211), and a fixing seat fixed in the inner cavity of the insulating shell (211); One end of the pressure rod (220) extends into the inner cavity of the insulating shell (211) and is connected to a passive sliding seat (223) that slides in the inner cavity of the insulating shell (211); the other end of the pressure rod (220) extends from the end of the insulating shell (211) and faces the synchronous pressure rod (216) in the filter unit; An insulating retract rod (224) is slidably inserted on the fixing seat, and one end of the insulating retract rod (224) is slidably inserted into the end opening of the pressure-bearing rod (220) and is connected to a first spring, and one end of the first spring away from the insulating retract rod (224) is connected to the end of the inner cavity of the pressure-bearing rod (220); A second spring is connected between the fixed seat and the passive sliding seat (223).

5. The environmental water sample detection device according to claim 4, characterized in that: The control module is located in the housing, and comprises a control circuit board (225) connected to an insulating end cover (213) in the housing; The control circuit board (225) is connected to a signal transmitter (227); The control module further comprises two trigger terminals (226) arranged opposite to each other; One of the trigger terminals (226) is connected to the control circuit board (225), and the other trigger terminal (226) is connected to an end of the pressure bearing rod (220) close to the fixing seat; When the second spring in the rebound module is in an initial relaxed state, the two trigger terminals (226) are not in contact with each other.

6. The environmental water sample detection device according to claim 5, characterized in that: The two trigger terminals (226) are both electrically connected to the control circuit board (225); When the two trigger terminals (226) are in contact, the trigger control circuit board (225) controls the signal transmitter (227) to send a control signal to the controller (101) in the pump mechanism.

7. The environmental water sample detection device according to claim 4, characterized in that: When the second spring in the rebound module is in an initial relaxed state, the end of the pressure-bearing rod (220) abuts against the end of the synchronous pressure-applying rod (216).

8. The environmental water sample detection device according to claim 1, characterized in that: The scraping member comprises a hollow extension portion (217); A strip scraper seat (218) is slidably inserted into the end opening of the hollow extension portion (217), and a third spring is connected to one end of the strip scraper seat (218) extending into the end opening of the hollow extension portion (217), and the other end of the third spring is connected to the end of the inner cavity of the hollow extension portion (217); One end of the strip scraper seat (218) away from the third spring is in close contact with the surface of the filter hole plate (207) in the filter unit; The electric drive component (209) is a waterproof electric cylinder, and the electric drive component (209) and the reciprocating water pump body (100) are both electrically connected to the controller (101); The fixed end of the electric drive component (209) is connected to the outer wall of the front cover shell (201); One end of the gate plate (206) extends into the inner cavity of the front cover shell (201) and is respectively connected to the hollow extension portion (217) and the blocking seat (210), and the other end of the gate plate (206) extends from the outer wall of the front cover shell (201) and is connected to the free end of the electric drive component (209).

9. The environmental water sample detection device according to claim 1, characterized in that: The bypass standby pipeline unit comprises a bypass standby pipeline (202) and a drainage hose (205); One end of the bypass standby pipeline (202) is fixedly connected to the side wall of the front housing (201), and one end of the drainage hose (205) is fixedly connected to the side wall of the rear housing (208); The bypass standby pipeline (202) is provided with a narrow opening (203), the other end of the drainage hose (205) is sealed and rotatably connected to a collecting cover (204), and the end of the collecting cover (204) away from the drainage hose (205) is detachably sealed and covered on the end of the bypass standby pipeline (202) away from the front cover (201); The interior of the collection cover (204) is connected to a filter screen.

10. The environmental water sample detection device according to claim 9, characterized in that: When the gate valve structure is in an initial state, the blocking seat (210) blocks the connection between the bypass standby pipeline (202) and the front cover (201) in the bypass standby pipeline unit; A through slot through which the blocking seat (210) can pass is provided on the bottom wall of the inner cavity of the front cover shell (201).

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