Water quality environment detection equipment

Abstract

The invention provides water quality environment detection equipment which comprises a sensor body, the sensor body comprises a shell, an end cover is detachably installed at the open end of the shell, a sensor window is arranged on the end cover, and a sealing piece is arranged between the end cover and the shell; a cleaning assembly is installed on the end cover and comprises a rotating shaft rotationally installed on the end cover, a cleaning paddle is installed at the end, extending out of the end cover, of the rotating shaft, all paddle blades of the cleaning paddle are arranged in the radial direction of the end cover, the free ends of all the paddle blades do not protrude out of the outer circumferential face of the end cover, and the end, extending into the shell, of the rotating shaft is driven by a driving device; and one side, facing the surface of the end cover, of each paddle is provided with a scraper. The optical sensor is reasonable in structural design, the sweeping paddle is arranged on the outer side of the end cover of the sensor, the sweeping paddle is driven by the driving device to rotate, the outer surface of the end cover is scraped and brushed, the situation that organisms in a water body shield the window position of the sensor is effectively avoided, and the detection accuracy of the optical sensor is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water quality detection, and in particular relates to a water quality environment detection device. Background Art

[0002] With the rapid development of industrialization and urbanization, water pollution has become one of the key issues that need to be solved in the field of global environmental protection. Water pollution not only affects the ecological environment, but also poses a major threat to agricultural production and human health. Therefore, water quality testing has become an important means to ensure the safety and sustainable management of agricultural water sources. Traditional water quality testing methods often rely on laboratory analysis, which requires sampling, transportation and complex testing procedures, and the cycle is too long. Therefore, portable water quality testing equipment has gradually become a research hotspot. These devices can be used for real-time monitoring on-site in agricultural irrigation water sources such as rivers and lakes, reducing the error and time cost of sample transportation. However, most common portable water quality testing equipment is to take water samples on site and then test them on land. The efficiency of water quality testing still needs to be improved. In order to further improve the efficiency of data acquisition, there is a solution in the prior art that uses underwater optical sensing equipment to directly perform water quality testing. For example, optical sensors are directly used to collect water quality information underwater in real time, which greatly improves the efficiency of water quality testing. Optical sensors can even be stationed underwater and then monitor water quality in real time in the monitoring room. However, such optical sensors are easily blocked or entangled by underwater phytoplankton, which affects the detection effect. In addition, underwater phytoplankton is easy to reproduce near the sensor window, forming a biocommunity accumulation, which has a great impact on water quality detection. Therefore, it is necessary to improve the existing underwater optical sensing equipment. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a water quality environment detection device.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A water quality environment detection device comprises a sensor body, which comprises a shell, an open end of the shell is detachably mounted with an end cover, the end cover is provided with a sensor window, and a seal is provided between the end cover and the shell; a cleaning assembly is installed on the end cover, the cleaning assembly comprises a rotating shaft rotatably mounted on the end cover, a cleaning paddle is installed on one end of the rotating shaft extending out of the end cover, each blade of the cleaning paddle is arranged radially along the end cover, and the free end of each blade does not protrude from the outer circumferential surface of the end cover, and the end of the rotating shaft extending into the shell is driven by a driving device; each blade is provided with a scraper on the side facing the surface of the end cover.

[0006] Furthermore, the sweeping paddle can be detachably mounted on the rotating shaft.

[0007] Furthermore, the sealing member is a rubber sealing ring.

[0008] Furthermore, the driving device includes a servo motor, and the servo motor is connected to an onshore controller via a network.

[0009] Furthermore, the shell is made of transparent material.

[0010] Furthermore, the driving device is installed on the inner wall of the shell or on the end cover.

[0011] Furthermore, the sweeping paddle includes a hub and 2-3 blades evenly distributed along the outer circumference of the hub.

[0012] Furthermore, the rotating shaft is rotatably mounted at the center of the end cover.

[0013] Furthermore, a sealing member is provided between the rotating shaft and the end cover.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The invention has a reasonable structural design. A cleaning paddle is arranged on the outside of the end cover of the sensor, and the cleaning paddle is driven to rotate by a driving device to achieve a scraping effect on the outer surface of the end cover, effectively preventing organisms in the water body from blocking the sensor window position, thereby improving the detection accuracy of the optical sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure created by the present invention;

[0018] Figure 2 A schematic diagram of the structure created by the present invention in a decomposed state;

[0019] Figure 3 A schematic diagram of the end cover portion of the invention;

[0020] Figure 4 for Figure 3 Schematic diagram of the working head installed at the end of the middle blade;

[0021] Figure 5 for Figure 4 Schematic diagram of the cleaning component part;

[0022] Figure 6 It is a schematic diagram of the connection structure between the working head and the base body in the invention;

[0023] Figure 7 A schematic diagram of an embodiment of the present invention when a protective cover is provided;

[0024] Figure 8 This is a schematic diagram of the structure decomposition when a protective cover is provided in an embodiment of the present invention;

[0025] Fig. 9 for Figure 7 Schematic diagram of the middle end cover;

[0026] Fig.10 It is a schematic diagram of the scraper strip part in the invention;

[0027] Fig.11 for Fig. 9 A schematic diagram of a piston member provided in the embodiment;

[0028] Fig.12 This is a schematic diagram of the invention in which the end cover is provided with a piston member;

[0029] Fig.13 for Fig.12 A cross-sectional view of

[0030] Fig.14 for Fig.12 A schematic diagram of a state in which the middle piston is pressed into the liquid storage port by a paddle;

[0031] Fig.15 for Fig.12 The schematic diagram after removing the piston and spring;

[0032] Fig.16 It is a schematic diagram of a piston member in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] 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", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be 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 invention can be understood according to specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] A water quality environment testing device, such as Figures 1 to 3 As shown, the sensor body includes a shell 1, an end cover 2 is detachably installed on the open end of the shell, a sensor window 3 is arranged on the end cover, and a seal 4 is arranged between the end cover and the shell; a cleaning component 5 is installed on the end cover, and the cleaning component includes a rotating shaft 6 rotatably installed on the end cover, and a cleaning paddle 7 is installed on the end of the rotating shaft extending out of the end cover, and each blade 8 of the cleaning paddle is arranged radially along the end cover, and the free end of each blade does not protrude from the outer circumferential surface of the end cover, and the end of the rotating shaft extending into the shell is driven by a driving device 9; a scraper 10 is provided on the side of each blade facing the surface of the end cover, and the scraper can rotate with the blade and scrape the sensor window on the end cover of the optical sensor.

[0038] Typically, the sweeping paddle is detachably mounted on the rotating shaft. The seal is a rubber sealing ring, which can effectively ensure the sealing between the end cover and the housing. As an example, the drive device includes a servo motor, which is connected to an onshore controller via a network. In an optional embodiment, a brake is provided at the motor shaft end of the drive motor to achieve locking at any position, and in a further improved solution, a position detection device, such as a grating encoder, a Hall sensor, etc., is provided on the drive motor or the transmission shaft. The sweeping paddle can be conveniently fixed in a suitable position according to actual needs to avoid blocking the sensor window.

[0039] The housing is made of a transparent material. The driving device is mounted on the inner wall of the housing or on the end cover. The sweeping paddle includes a hub and 2-3 blades evenly distributed along the outer circumference of the hub. The rotating shaft is rotatably mounted at the center of the end cover. Preferably, a sealing member is provided between the rotating shaft and the end cover to ensure the sealing between the rotating shaft and the end cover, ensure that water does not enter the housing, and avoid damage to the sensor.

[0040] The above-mentioned water quality environment detection equipment has a reasonable structural design. By arranging a sweeping paddle on the outside of the end cover of the sensor and driving the sweeping paddle to rotate through a driving device, a scraping effect is achieved on the outer surface of the end cover, which effectively prevents organisms in the water body from blocking the sensor window position and improves the detection accuracy of the optical sensor.

[0041] In an optional embodiment, if Figures 4 to 6 As shown, the blade includes a base and a working head 11 mounted on the front end of the base, and a working head blade 12 is provided at the free end of the working head. In order to ensure a better connection between the working head and the base, an inclined transition surface 17 is provided on a section of the working head facing the base. The base is inserted into the slot 13 of the working head, and the working head and the base are slidably matched. An elastic member 14 is provided in the slot of the working head, and one end of the elastic member abuts against the end of the base and the other end abuts against the bottom of the groove of the working head. As an example, the elastic member adopts a piston return spring. The piston return spring plays an elastic buffering role, so that when the working head is impacted, it is allowed to move to the side of the root of the blade (i.e., the side toward the hub), so as to avoid the cleaning paddle from getting stuck and extend the service life of the cleaning paddle.

[0042] In addition, a limiting groove 15 is provided on the base, and the limiting groove is located on a side close to the free end of the base. For example, the limiting groove is an annular groove arranged around the outer circumference of the base. A limiting member 16 is provided on the working head corresponding to the limiting groove, so that when the working head slides along the length direction of the base, it will not fall off the base, and the maximum working position of the working head extending outward is limited by the limiting member, that is, under normal conditions, under the elastic force of the piston reset spring, the working head extends outward to the outer limit position, at which time the limiting member abuts against the side wall of the limiting groove close to the free end of the base, and after the working head is subjected to force, the working head is allowed to move inward, and when the working head moves inward to the inner limit position (at this time, the distance between the end of the scraper blade and the working head at the inner limit position is 3-5mm), the limiting member abuts against the side wall of the limiting groove close to the base to prevent the working head from colliding with the scraper blade. In this solution, when the working head is extended to the outer limit position, the outer edge of the working head (i.e. the position of the working head farthest from the root of the blade) does not protrude from the outer circumferential surface of the end cover.

[0043] When the cleaning paddle rotates, the scraper on the lower side of the blade cleans the surface of the end cover (except the corresponding part of the working head) in real time. Since the sensor window is within the coverage of the scraper, it can avoid the accumulation of impurities near the sensor window, ensuring the normal and reliable operation of the optical sensor. The working head can be in the outer limit position under the support of the elastic part. When it is necessary to clean the debris near the sensor body (sensor window side), the driving mechanism can be started to drive the cleaning paddle to perform the cleaning operation. The blade at the front end of the working head plays a role in cutting debris to a certain extent. During use, when the working head is impacted, it moves to the root side of the blade to protect the working head.

[0044] In a further improved scheme, a conical casing is provided on the outer circumference of the end cover, and the large diameter end of the casing faces the side away from the sensor body. In this scheme, the working head at the front end of the cleaning assembly blade is close to the inner wall of the casing (when the working head is in the outer limit position, the minimum distance between the blade and the casing approaches zero). As the cleaning paddle rotates, the blade of the working head can cooperate with the inner wall of the fixing ring to achieve cleaning of the space defined by the inner side of the casing. Since the large diameter end of the casing faces outward, the cleaned impurities can be discharged outward, especially when encountering aquatic organisms such as water plants, the water plants can be cut by the working head to prevent the sensor body from being trapped in the water plants.

[0045] In an optional embodiment, if Figures 7 to 10As shown, a protective cover 18 is installed on the outside of the end cover, and the protective cover includes a fixed ring 19, and a baffle structure is provided on the fixed ring. The fixed ring can be detachably installed on the end cover, or it can be fixed to the end cover. The baffle structure includes a plurality of arc-shaped baffles 20, so that the baffle structure as a whole is roughly a spherical structure, and each arc-shaped baffle is fixed to the center part 21 at one end away from the fixed ring, and a hollow is formed between two adjacent baffles. The width of the baffle is 5-10mm, and the sensor window is set corresponding to the hollow position, so the baffle structure will not block the sensor window. The fixed ring of the protective cover can be fixed to the outer edge of the end cover, and the baffle structure can effectively protect the sensor body, especially effectively prevent the sensor window from being hit by external objects. The hollow part formed between the baffles can play a role in water exchange and light transmission.

[0046] In a further improved scheme, an upward arc-shaped scraper 22 is provided at the end of the blade, and a scraper blade 23 is provided on the outer surface of the scraper. The curvature of the scraper is the same as the curvature of the baffle bar, and a baffle bar blade can also be provided on the inner wall of the baffle bar. When the blade rotates with the rotating shaft, the scraper bar can rotate in the protective cover, thereby cleaning up the debris entering the protective cover, and can cut aquatic plants, etc., to avoid aquatic plants blocking the front of the sensor window, to avoid debris staying in the protective cover, and to avoid the sensor body being trapped in the aquatic plants.

[0047] In the scheme with a protective cover, as a further improvement scheme, Figures 11 to 16 As shown: a functional cavity 24 is provided in the end cover, a liquid storage cavity is provided with a liquid outlet 25 at one end, and a liquid storage port 26 at the other end, a piston member 27 is installed in the liquid storage port, and a piston return spring 28 is provided between the piston member and the bottom of the functional cavity, the liquid storage port cross-sectional area is larger than the liquid storage cavity cross-sectional area, the liquid storage cavity cross-sectional area is larger than the liquid outlet cross-sectional area, a flexible diaphragm 31 is provided outside the liquid storage port, and the outer end of the piston member is designed to be a hemispherical structure, and the above-mentioned flexible diaphragm can be made of the diaphragm material commonly used in the prior art, such as the same material as the flexible diaphragm in the diaphragm pump, and even a soft plastic film is feasible. Under normal conditions, the piston return spring lifts the piston member, and the outer end of the piston member extends out of the liquid storage port (end cover surface) and lifts the diaphragm, and the diaphragm is used to ensure the sealing at the liquid storage port, so that water is only allowed to enter and discharge from the liquid outlet. Since the diaphragm closes the outer end of the liquid storage port, the piston member does not need to cooperate with the side wall of the liquid storage port, and the piston member and the liquid storage port gap can be matched.

[0048] When the cleaning paddle rotates to the piston position, the piston will be pressed inward into the liquid storage port, and the water in the liquid storage port will be squeezed out from the liquid port. Since the cross-sectional area of ​​the liquid port is smaller than the cross-sectional area of ​​the liquid storage chamber, the water discharged through the liquid port will form a faster water flow during the process of the piston being pressed into the liquid storage port, which can impact the liquid in the protective cover, effectively disturb the flow, and also help to flush impurities out of the protective cover. It should be pointed out that the outer end of the piston is designed as a hemispherical structure, which is more conducive to ensuring that the piston can be smoothly pressed into the liquid storage port when the paddle rotates to the piston position. After the cleaning paddle is separated from the piston, the piston will be lifted and reset by the piston reset spring. During the process of the piston lifting, the liquid storage chamber (including the liquid storage port) will re-absorb water, waiting for the cleaning paddle to press the piston again to "spray" the water out.

[0049] In order to ensure the stability of the piston structure, a long hole 29 can be vertically arranged in the middle of the piston, and a limit rod 30 cooperating with the long hole of the piston is provided on the side wall of the liquid storage port. The lower side wall 32 of the long hole serves as a limit for the extension amount of the outer end of the piston, that is, when the outer end of the piston is pushed out to the limit position by the piston return spring, the limit rod contacts the lower side wall of the long hole, ensuring that the piston will not move over when it is reset under the elastic force of the piston return spring, thereby realizing the limitation of the maximum extension amount of the outer end of the piston, ensuring that the piston can be smoothly pressed into the liquid storage port when the paddle passes by.

[0050] After the piston member is pressed into the liquid storage port by the cleaning paddle, the piston member will no longer move further into the liquid storage port, that is, the maximum amount of pressure of the piston member into the liquid storage port is when the outer end face of the piston member is flush with the surface of the end cover. Therefore, as long as the outer end face of the piston member is flush with the surface of the end cover, the distance between the inner end face of the piston member and the bottom of the liquid storage chamber is still greater than the minimum compression length of the piston return spring, the reset performance of the piston return spring can be guaranteed. Therefore, the upper side wall 33 of the long hole may not be used to limit the displacement of the piston member when it is pressed into the liquid storage port, that is, when the cleaning paddle presses the piston member into the liquid storage port, the upper side wall of the long hole will not limit the movement of the piston member into the liquid storage port.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A water quality environment detection device, characterized in that: The sensor body comprises a sensor body, which comprises a shell, an open end of the shell is detachably mounted with an end cover, the end cover is provided with a sensor window, and a seal is provided between the end cover and the shell; a cleaning assembly is installed on the end cover, the cleaning assembly comprises a rotating shaft rotatably mounted on the end cover, a cleaning paddle is installed on one end of the rotating shaft extending out of the end cover, each blade of the cleaning paddle is arranged radially along the end cover, and the free end of each blade does not protrude from the outer circumferential surface of the end cover, and the end of the rotating shaft extending into the shell is driven by a driving device; a scraper is provided on the side of each blade facing the surface of the end cover.

2. A water quality environment detection device according to claim 1, characterized in that: The sweeping paddle is detachably mounted on the rotating shaft.

3. A water quality environment detection device according to claim 1, characterized in that: The sealing member is a rubber sealing ring.

4. A water quality environment detection device according to claim 1, characterized in that: The driving device comprises a servo motor, and the servo motor is connected to a controller on land through a network.

5. The water quality environment detection device according to claim 1, characterized in that: The shell is made of transparent material.

6. A water quality environment detection device according to claim 1, characterized in that: The driving device is installed on the inner wall of the shell or on the end cover.

7. A water quality environment detection device according to claim 1, characterized in that: The sweeping paddle comprises a hub and 2-3 blades evenly distributed along the outer circumference of the hub.

8. The water quality environment detection device according to claim 1, characterized in that: The rotating shaft is rotatably mounted at the center of the end cover.

9. A water quality environment detection device according to claim 8, characterized in that: A sealing member is provided between the rotating shaft and the end cover.

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