A water sample filtering device for environmental monitoring with quick filter element replacement

Abstract

The present invention relates to the field of environmental monitoring technology, and specifically to an environmental monitoring water sample filtering device with a quick filter element replacement, comprising a frame, a water adding component, a detection component, a filter table and multiple filter monitoring mechanisms; the filter table is provided with multiple docking slots, and each docking slot is provided with a filter liner; the filter monitoring mechanism includes a flow rate monitoring mechanism and a partition mechanism, the flow rate monitoring mechanism includes a flow rate conversion structure, a first monitoring structure and a second monitoring structure, the flow rate conversion structure is used to convert the kinetic energy of the water flow into its own rotational motion, and the first monitoring structure and the second monitoring structure are used to monitor the change in the rotation speed of the flow rate conversion structure; multiple partition mechanisms are respectively arranged at the lower ends of multiple flow rate monitoring mechanisms; the present invention provides a filter table, a flow rate conversion structure, a first monitoring structure, a second monitoring structure and a partition mechanism, so as to avoid the detection component failing to effectively detect the damage of the filter liner, resulting in the flow of debris into the detection component.

Description

Technical Field

[0001] The invention relates to the technical field of environmental monitoring, and in particular to an environmental monitoring water sample filtering device with a quick filter element replacement. Background Art

[0002] In the field of environmental monitoring, accurate testing of water samples is crucial for understanding water quality and assessing the ecological environment. However, water samples often contain solid impurities such as sediment and suspended matter. Direct testing can interfere with instrument accuracy and lead to data deviations. Therefore, filtration is an essential step before testing.

[0003] The patent with announcement number CN118807300B discloses a water sample filtering device for environmental monitoring and analysis. When in use, after the water sample is filtered through the filter liner, the water sample first falls into the water receiving tray. When the filter liner is not blocked, the rate at which the water sample falls into the water receiving tray is greater than the leakage rate of the leaking hole, thereby gradually increasing the gravity of the water receiving tray, so that the water receiving tray moves downward and compresses the reset spring 2. At this time, the pressure sensor 1 is no longer resisted by the side support rod. When the water level in the water receiving tray rises to the overflow groove position, the side support rod at the bottom will resist the pressure sensor 2. On the contrary, when impurities accumulate and are blocked in the filter liner, the water sample falls into The rate in the water collection tray decreases until it is equivalent to the leakage rate of the leakage hole. During the entire filtration process, pressure sensor 2 will not be triggered; in summary, when the control panel first loses the signal of pressure sensor 1 during the filtration process, then receives the signal of pressure sensor 2, and finally, re-receives the signal of pressure sensor 1, it indicates that there is no accumulation of impurities or blockage in the filter lining; and when the control panel first loses the signal of pressure sensor 1 during the filtration process, then re-receives the signal of pressure sensor 1, and does not receive the signal of pressure sensor 2 during the process, it indicates that the water flow effect of the filter lining is significantly reduced, which indicates that the filter lining is blocked and needs to be cleaned.

[0004] Although the above scheme determines whether there is blockage inside the filter liner through the contact changes between the side support rod and the two pressure sensors, when the filter liner is partially damaged, the local damage will cause the water sample to pass through the filter liner faster. Since the broken area has no filtering effect, the water sample can pass directly, which will cause the water level in the water receiving tray to rise rapidly, similar to the case where the filter liner is not blocked, resulting in the detection component failing to accurately detect the accumulation of impurities and blockage in the filter liner, and causing some impurities to flow into the detection component. Summary of the Invention

[0005] In response to the above problems, a water sample filtration device for environmental monitoring with a quick filter element replacement is provided. By setting a filter table, a flow rate conversion structure, a first monitoring structure, a second monitoring structure and a partition mechanism, it is possible to avoid the detection component failing to effectively detect damage to the filter liner, which may cause debris to flow into the detection component.

[0006] In order to solve the problems of the prior art, the present invention provides an environmental monitoring water sample filtering device with a quick-replacement filter element, comprising a frame and a water adding component and a detection component arranged at the upper and lower ends of the frame, and also comprising a filter platform and a plurality of filter monitoring mechanisms; the filter platform is horizontally arranged in the middle of the frame and can move back and forth along its own length direction, and a plurality of docking grooves are arranged on the filter platform along its length direction, and a filter inner lining is arranged in each docking groove; a plurality of filter monitoring mechanisms are respectively arranged at the lower ends of a plurality of filter inner linings, the filter monitoring mechanism includes a flow rate monitoring mechanism and a partition mechanism, the flow rate monitoring mechanism includes a flow rate conversion structure, a first monitoring structure and a second monitoring structure, the flow rate conversion structure is used to convert the kinetic energy of the water flow into its own rotational motion, the first monitoring structure and the second monitoring structure are used to monitor the change in the rotation speed of the flow rate conversion structure; a plurality of partition mechanisms are respectively arranged at the lower ends of a plurality of flow rate monitoring mechanisms.

[0007] Preferably, the flow rate conversion structure includes two mounting plates and multiple conversion components; the two mounting plates are arranged parallel to each other on both sides of the filter liner; the multiple conversion components are arranged at equal intervals between the two mounting plates, and the multiple conversion components divide the lower end of the filter liner into multiple parts.

[0008] Preferably, the conversion assembly includes a first rotating shaft, a conversion fan blade and a flow collector; the two ends of the first rotating shaft are respectively rotatably connected to two mounting plates; the conversion fan blade is sleeved on the first rotating shaft; the flow collector is arranged at the upper end of the conversion fan blade, and the flow collector is used to collect the water flow in the range it covers to the conversion fan blade.

[0009] Preferably, the first monitoring structure includes a rotary encoder capable of monitoring the rotational speed of the first rotating shaft, and the rotary encoder is used to directly monitor the rotational speed of the first rotating shaft.

[0010] Preferably, the second monitoring structure includes a signal amplification structure, a telescopic arm and a trigger assembly; the signal amplification structure is used to amplify the rotational speed of the first rotating shaft; the telescopic arm is connected to the signal amplification structure, and the telescopic arm is extended by centrifugal force to contact the trigger assembly; the trigger assembly is arranged on one side of the telescopic arm.

[0011] Preferably, the trigger component includes a contact switch, which includes a signal generating device, two wires and a conductive sheet; the two ends of the signal generating device are respectively connected to the two wires; the circuit between the two wires is in an open circuit state; the conductive sheet is connected to the telescopic arm, and when the conductive sheet is between the two wires, the circuit is connected.

[0012] Preferably, the trigger assembly also includes a U-shaped frame and two tightening assemblies, which are respectively arranged at both ends of the U-shaped frame, and the tightening assembly includes a guide rod and a second spring; the guide rod is slidingly connected to the U-shaped frame, and the wire is connected to the guide rod; the second spring is used to apply a thrust to the guide rod toward the middle of the U-shaped frame.

[0013] Preferably, the pressing assembly further includes a limiting ring connected to the guide rod, and the limiting ring is used to limit the distance that the second spring pushes the guide rod to move.

[0014] Preferably, the signal amplification structure includes a second rotating shaft and a speed amplification component; the second rotating shaft is arranged parallel to one side of the first rotating shaft, and the telescopic arm is connected to the second rotating shaft; the two ends of the speed amplification component are respectively connected to the first rotating shaft and the second rotating shaft.

[0015] Preferably, the telescopic arm includes a sleeve, a telescopic rod and a first spring; one end of the sleeve is connected to the second rotating shaft; the telescopic rod is slidably arranged in the sleeve, and one end of the telescopic rod extends out of the sleeve and is connected to the conductive sheet; the first spring is arranged in the sleeve, and the first spring is used to apply a force to the telescopic rod toward the inside of the sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with a filter station, a flow rate conversion structure, a first monitoring structure, a second monitoring structure and a partition mechanism. The filter station can move and switch the filter liner to realize the rapid replacement of the filter liner and ensure the continuity of the filtration process. The flow rate conversion structure converts the kinetic energy of the water into rotational motion to provide a visual physical signal, i.e., the speed change, for monitoring. The first monitoring structure and the second monitoring structure form a redundant monitoring system to ensure that abnormal signals are reliably captured. The partition mechanism is linked with the first monitoring structure and the second monitoring structure. Once one of the first monitoring structure and the second monitoring structure detects an abnormal flow rate, the partition mechanism immediately blocks the water flow to prevent debris from entering the detection component, thereby avoiding the detection component failing to effectively detect damage to the filter liner and causing debris to flow into the detection component.

[0018] 2. The present invention is provided with multiple conversion components, which disperse the water flow to different areas, so that the water flow rate undertaken by a single conversion component is reduced. When the filter liner in the corresponding area of ​​a certain conversion component is partially damaged, the water flow velocity in the area changes more significantly, and the rotation speed of the corresponding conversion component is significantly increased, which makes it easier for the first monitoring structure and the second monitoring structure to capture abnormalities in time, thereby improving the sensitivity of the water flow velocity change when the filter liner is damaged, and timely judging the damage of the filter liner.

[0019] 3. The present invention is provided with a first rotating shaft, a conversion fan blade and a focusing cover. The focusing cover collects and guides the water flow, reduces the contact area between the water flow and the conversion fan blade, increases the impact force of the water flow on the unit area of ​​the conversion fan blade, and makes the force of the conversion fan blade to drive the first rotating shaft to rotate stronger. Through the cooperation of the focusing cover, the conversion fan blade and the first rotating shaft, the first rotating shaft can quickly respond to subtle changes in the flow rate of the water sample, thereby improving the sensitivity of water sample flow rate monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereoscopic diagram of an environmental monitoring water sample filtering device with a quick filter element replacement according to the present invention.

[0021] Figure 2 The present invention is a left side view of a frame, a filter table, a filter liner and a filter monitoring mechanism in an environmental monitoring water sample filtering device with a quick filter element replacement.

[0022] Figure 3 yes Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0023] Figure 4 It is a stereoscopic diagram of a filter liner, a flow rate conversion structure, a first monitoring structure and a second monitoring structure in a water sample filtering device for environmental monitoring with a quick filter element replacement according to the present invention.

[0024] Figure 5 It is a three-dimensional diagram of a mounting plate and a conversion assembly in an environmental monitoring water sample filtering device with a quick filter element replacement according to the present invention.

[0025] Figure 6 It is a three-dimensional diagram of the first rotating shaft, conversion fan blades and flow collecting cover in the environmental monitoring water sample filtering device with a quick filter element replacement according to the present invention.

[0026] Figure 7 It is a stereoscopic diagram of a first rotating shaft and a rotary encoder in an environmental monitoring water sample filtering device with a quick filter element replacement according to the present invention.

[0027] Figure 8 It is a stereoscopic diagram of a first rotating shaft, a signal amplifying structure, a telescopic arm and a trigger assembly in an environmental monitoring water sample filtering device with a quick filter element replacement according to the present invention.

[0028] Figure 9 The present invention is a stereoscopic diagram of a contact switch, a U-shaped frame and a tightening assembly in a water sample filtering device for environmental monitoring with a quick filter element replacement.

[0029] Figure 10 The present invention is a stereoscopic diagram of a signal generating device, a wire, a U-shaped frame, a guide rod, a second spring and a limit ring in a water sample filtering device for environmental monitoring with a quick filter element replacement.

[0030] Figure 11 It is a stereoscopic diagram of a first rotating shaft, a second rotating shaft, a rotation speed amplifying component and a telescopic arm in an environmental monitoring water sample filtering device with a quick filter element replacement according to the present invention.

[0031] Figure 12 This is an exploded view of a telescopic arm and a conductive sheet in an environmental monitoring water sample filtering device with a quick filter element replacement according to the present invention.

[0032] 1. Frame; 2. Water adding assembly; 3. Detection assembly; 4. Filter station; 5. Filter liner; 6. Flow rate monitoring mechanism; 61. Flow rate conversion structure; 611. Mounting plate; 612. Conversion assembly; 6121. First rotating shaft; 6122. Conversion fan blade; 6123. Flow collector; 62. First monitoring structure; 621. Rotary encoder; 63. Signal amplification structure; 631. Second rotating shaft; 632. Speed ​​amplification assembly; 6321. First transmission wheel; 6322. Second transmission wheel; 6323. Synchronous belt; 64. Telescopic arm; 641. Sleeve; 642. Telescopic rod; 643. First spring; 65. Trigger assembly; 651. Contact switch; 6511. Signal generating device; 6512. Wire; 6513. Conductive sheet; 652. U Frame; 653, tightening assembly; 6531, guide rod; 6532, second spring; 6533, limit ring; 7, partition mechanism; 71, funnel cover; 72, electric control valve. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figures 1 to 12 As shown: A water sample filtering device for environmental monitoring with quick filter element replacement, comprising a frame 1 and a water adding component 2 and a detection component 3 arranged at the upper and lower ends of the frame 1, and also comprising a filter platform 4 and multiple filter monitoring mechanisms; the filter platform 4 is horizontally arranged in the middle of the frame 1 and can move back and forth along its own length direction, and a plurality of docking grooves are arranged on the filter platform 4 along its length direction, and a filter lining tube 5 is arranged in each docking groove; multiple filter monitoring mechanisms are respectively arranged at the lower ends of multiple filter lining tubes 5, and the filter monitoring mechanism includes a flow rate monitoring mechanism 6 and a partition mechanism 7. The flow rate monitoring mechanism 6 includes a flow rate conversion structure 61, a first monitoring structure 62 and a second monitoring structure. The flow rate conversion structure 61 is used to convert the kinetic energy of the water flow into its own rotational motion, and the first monitoring structure 62 and the second monitoring structure are used to monitor the change in the rotation speed of the flow rate conversion structure 61; multiple partition mechanisms 7 are respectively arranged at the lower ends of multiple flow rate monitoring mechanisms 6.

[0035] Specifically, the water adding component 2 and the detection component 3 both adopt existing technology, and their structure and working principle have been described in detail in the comparative documents. The partition mechanism 7 includes a funnel cover 71 and an electric control valve 72. The upper end opening of the funnel cover 71 is covered at the lower end of the filter lining tube 5, and the electric control valve 72 is arranged at the lower end of the funnel cover 71.

[0036] The water sample is pre-stored in the water adding assembly 2 at the upper end of the frame 1. When the water sample needs to be filtered, under the action of gravity, the water sample flows out from the lower end of the water adding assembly 2 and flows into the filter lining 5 of the filter station 4. The filter lining 5 intercepts the solid impurities in the water sample and only allows the water-soluble substances to continue to flow downward with the water flow. The water sample continues to move downward and contacts the flow rate conversion structure 61 in the filter monitoring mechanism below. The flow rate conversion structure 61 converts part of the kinetic energy of the water sample into its own rotational motion. At the same time, the first monitoring structure 62 and the second monitoring structure monitor the rotation speed change of the flow rate conversion structure 61 in real time. In the initial stage of filtration, the solid impurities intercepted by the filter lining 5 are relatively small, and the water sample encounters the least resistance. At this time, the water sample flows downward at the fastest speed. Accordingly, the rotation speed of the flow rate conversion structure 61 also reaches the fastest. As the filtration process continues, the solid impurities intercepted by the filter lining 5 continue to increase, the resistance to the downward flow of the water sample gradually increases, and its flow rate gradually decreases, thereby resulting in the flow rate conversion structure 61. The rotation speed of the structure 61 gradually decreases. Once the filter liner 5 is damaged, the resistance to the downward flow of the water sample is greatly reduced, and the flow rate will suddenly accelerate, which will increase the rotation speed of the flow rate conversion structure 61. As long as one of the first monitoring structure 62 and the second monitoring structure detects a change in the flow rate of the water sample, the partition mechanism 7 set at the lower end of the filter monitoring mechanism is started, and the electric control valve 72 is quickly closed, effectively preventing debris from falling into the detection component 3 at the lower end of the frame 1. During the filtration process, if the filter liner 5 needs to be replaced, the filter table 4 can be moved to move the new filter liner 5 to the bottom of the water adding component 2 to achieve quick replacement. By setting the flow rate conversion structure 61, the first monitoring structure 62, the second monitoring structure and the partition mechanism 7, the first monitoring structure 62 and the second monitoring structure increase the redundancy of the rotation speed monitoring of the flow rate conversion structure 61, and timely block the water sample from flowing from the liner filter to the detection component 3, thereby avoiding the detection component 3 failing to effectively detect the damage of the filter liner 5 and causing debris to flow into the detection component 3.

[0037] Reference Figure 3 、 Figure 4 and Figure 5As shown: the flow rate conversion structure 61 includes two mounting plates 611 and multiple conversion components 612; the two mounting plates 611 are arranged parallel to each other on both sides of the filter liner 5; the multiple conversion components 612 are arranged at equal intervals between the two mounting plates 611, and the multiple conversion components 612 divide the lower end of the filter liner 5 into multiple parts.

[0038] If a conversion component 612 is set up to gather all water samples to flow to the conversion component 612, when the filter liner 5 is less broken, the flow rate of the water sample changes weakly, and the damage of the filter liner 5 cannot be discovered in time. Therefore, multiple conversion components 612 are set up. After the water sample completes the interception of solid debris through the filter liner 5, it continues to flow downward. Due to the layout of multiple conversion components 612, the water sample is dispersed into multiple streams, which flow to each conversion component 612 respectively. Compared with setting only one conversion component 612 to gather all water flows, this dispersed design allows each conversion component 612 to undertake The water flow rate is relatively small. During the filtration process, if the filter lining tube 5 corresponding to a certain conversion component 612 is partially broken, even if the degree of damage is small, due to the change in the water flow path in the area, the water flow passing through this area will increase significantly, and the flow rate will also increase accordingly, thereby driving the corresponding conversion component 612 to significantly increase its rotation speed. The first monitoring structure 62 and the second monitoring structure can capture this abnormal change more promptly by real-time monitoring of the rotation speed of each conversion component 612, thereby improving the sensitivity of the water flow rate change when the filter lining tube 5 is damaged, and timely judging the damage of the filter lining tube 5.

[0039] Reference Figure 5 and Figure 6 As shown: the conversion component 612 includes a first rotating shaft 6121, a conversion fan blade 6122 and a flow collecting cover 6123; the two ends of the first rotating shaft 6121 are respectively rotatably connected to the two mounting plates 611; the conversion fan blade 6122 is sleeved on the first rotating shaft 6121; the flow collecting cover 6123 is set at the upper end of the conversion fan blade 6122, and the flow collecting cover 6123 is used to collect the water flow in the range it covers to the conversion fan blade 6122.

[0040] In the water sample filtration process, the water sample after the solid debris is intercepted by the filter liner 5 continues to flow downward. If there is no focusing cover 6123, the water sample will fall on the conversion blade 6122 in a disorderly manner from a larger range, resulting in the dispersion of the force of the water flow on the conversion blade 6122. The torque applied to the conversion blade 6122 is small, and it is difficult to quickly and obviously drive the first shaft 6121 to rotate. Therefore, a focusing cover 6123 is set at the upper end of the conversion blade 6122. The focusing cover 6123 collects and guides the water samples within its coverage range, so that the originally dispersed water flow is concentrated to flow to the conversion blade 6122, reducing the water flow. The contact area between the flow and the conversion fan blade 6122. When these converged water flows impact the conversion fan blade 6122, the impact force per unit area increases, and the conversion fan blade 6122 is subjected to a stronger rotational force, which can quickly drive the first rotating shaft 6121 to rotate. As the flow rate of the water sample changes, the impact force exerted on the conversion fan blade 6122 will also change accordingly, and the rotation speed of the first rotating shaft 6121 will be adjusted accordingly. Through the cooperation of the focusing cover 6123, the conversion fan blade 6122 and the first rotating shaft 6121, the first rotating shaft 6121 can quickly respond to subtle changes in the flow rate of the water sample, thereby improving the sensitivity of water sample flow rate monitoring.

[0041] Reference Figure 4 and Figure 7 As shown, the first monitoring structure 62 includes a rotary encoder 621 capable of monitoring the rotation speed of the first rotating shaft 6121 . The rotary encoder 621 is used to directly monitor the rotation speed of the first rotating shaft 6121 .

[0042] Specifically, there are multiple rotary encoders 621, and the multiple rotary encoders 621 correspond to the multiple first rotating shafts 6121 respectively. The rotary encoder 621 uses existing technology. The rotary encoder 621 includes a light source and a photosensitive element. The light source is installed on the first rotating shaft 6121, and the photosensitive element is fixed on the mounting plate 611.

[0043] When the conversion component 612 is working, when the water sample gathered by the focusing cover 6123 impacts the conversion fan blade 6122, driving the first rotating shaft 6121 to rotate, the light source installed on the first rotating shaft 6121 rotates accordingly. During the rotation process, the relative position between the light source and the fixed photosensitive element continues to change, and the light emitted by the light source will be periodically irradiated onto the photosensitive element. The photosensitive element generates corresponding electrical signal changes according to the changes in the received light. By analyzing and processing these electrical signals, the speed information of the first rotating shaft 6121 can be obtained in real time and accurately. Since multiple rotary encoders 621 correspond to multiple first rotating shafts 6121 respectively, the speed of the first rotating shaft 6121 in each conversion component 612 can be monitored simultaneously, thereby ensuring that the operating status of each conversion component 612 can be accurately grasped.

[0044] Reference Figure 3and Figure 8 As shown: the second monitoring structure includes a signal amplifying structure 63, a telescopic arm 64 and a trigger assembly 65; the signal amplifying structure 63 is used to amplify the rotational speed of the first rotating shaft 6121; the telescopic arm 64 is connected to the signal amplifying structure 63, and the telescopic arm 64 is extended by centrifugal force to contact the trigger assembly 65; the trigger assembly 65 is arranged on one side of the telescopic arm 64.

[0045] Specifically, there are multiple second monitoring structures, and the multiple second monitoring structures correspond to the multiple first rotating shafts 6121 respectively.

[0046] During the water sample filtration process, when the filter liner 5 is slightly damaged, the water sample flow rate changes slightly, and the rotation speed of the first rotating shaft 6121 does not change significantly, which may be difficult to detect by the first monitoring structure 62 alone. At this time, the rotational motion of the first rotating shaft 6121 is transmitted to the telescopic arm 64 through the signal amplification structure 63. The signal amplification structure 63 amplifies the kinetic energy brought by the rotation speed, so that the centrifugal force on the telescopic arm 64 increases. As the centrifugal force increases, the telescopic arm 64 begins to extend. When it extends to a certain extent, it contacts the trigger component 65 provided on one side thereof. After the trigger component 65 is contacted, a trigger signal is generated. The signal indicates that the rotation speed of the first rotating shaft 6121 has changed, which in turn reflects that the water sample flow rate is abnormal, thereby realizing the monitoring of the rotation speed change of the first rotating shaft 6121, thereby effectively improving the monitoring capability of subtle rotation speed changes of the first rotating shaft 6121.

[0047] Reference Figure 3 、 Figure 9 and Figure 10 As shown: the trigger component 65 includes a contact switch 651, which includes a signal generating device 6511, two wires 6512 and a conductive sheet 6513; the two ends of the signal generating device 6511 are respectively connected to the two wires 6512; the circuit between the two wires 6512 is in an open circuit state; the conductive sheet 6513 is connected to the telescopic arm 64, and when the conductive sheet 6513 is between the two wires 6512, the circuit is connected.

[0048] When the water sample filtration device for environmental monitoring is running, when the speed of the first rotating shaft 6121 is low, the centrifugal force generated by the telescopic arm 64 is small. At this time, the telescopic arm 64 is in a contracted state, the conductive sheet 6513 and the two wires 6512 remain separated, and the entire circuit remains in an open circuit state. No current passes through the signal generating device 6511 and no signal is generated. As the filter liner 5 is damaged, the flow rate of the water sample is accelerated, and the rotation speed of the first rotating shaft 6121 is accelerated, and the kinetic energy transmitted to the telescopic arm 64 is increased, so that the energy generated by the telescopic arm 64 is reduced. The centrifugal force is significantly enhanced. Under the action of centrifugal force, the telescopic arm 64 extends, driving the conductive sheet 6513 connected to it to move. When the telescopic arm 64 extends to a certain extent, the conductive sheet 6513 enters the position between the two wires 6512, connecting the two originally disconnected wires 6512 to connect the circuit. At this time, current can pass through the signal generating device 6511, and the signal generating device 6511 generates a corresponding signal, indicating that the speed of the first rotating shaft 6121 has changed, thereby realizing sensitive monitoring of the speed change of the first rotating shaft 6121.

[0049] Reference Figure 9 and Figure 10 As shown: the trigger assembly 65 also includes a U-shaped frame 652 and two tightening assemblies 653. The two tightening assemblies 653 are respectively arranged at both ends of the U-shaped frame 652. The tightening assembly 653 includes a guide rod 6531 and a second spring 6532; the guide rod 6531 is slidably connected to the U-shaped frame 652, and the wire 6512 is connected to the guide rod 6531; the second spring 6532 is used to apply a thrust to the guide rod 6531 toward the middle of the U-shaped frame 652.

[0050] When the conductive sheet 6513 connects the two wires 6512, the conductive sheet 6513 needs to contact the two wires 6512. Therefore, the distance between the ends of the two wires 6512 needs to be controlled to be less than the thickness of the conductive sheet 6513. At this time, when the conductive sheet 6513 moves between the two wires 6512, the wires 6512 can be pressed against the conductive sheet 6513. However, the close distance between the two wires 6512 will interfere with the movement path of the conductive sheet 6513, causing the conductive sheet 6513 and the wires 6512 to collide. Therefore, two pressing components 653 are provided. In the initial state, due to the thrust of the second spring 6532, the two guide rods 6531 drive the wires 6512 closer to each other, so that the distance between the ends of the two wires 6512 is less than the thickness of the conductive sheet 6513. After the conductive sheet 6513 pushes the two guide rods 6531 away from each other, it can ensure that the conductive sheet 6513 is in contact with the two wires 6512. In addition, the conductive sheet 6513 has elasticity and can be slightly deformed. When the speed of the first rotating shaft 6121 increases, the telescopic arm 64 extends due to the centrifugal force, driving the conductive sheet 6513 to move between the two wires 6512. The conductive sheet 6513 exerts an outward force on the two guide rods 6531, forcing the guide rods 6531 to slide along the U-shaped frame 652, overcoming the thrust of the second spring 6532, and moving the two wires 6512 away from each other. During this process, the second spring 6532 is compressed, continuously exerting a thrust on the guide rod 6531 toward the conductive sheet 6513. The wire 6512 is ensured to always remain in a tight contact state with the conductive sheet 6513 to maintain circuit connectivity. When the speed of the first rotating shaft 6121 decreases and the telescopic arm 64 contracts to drive the conductive sheet 6513 away, the thrust of the second spring 6532 pushes the guide rod 6531 to reset, so that the two wires 6512 are close to each other again and return to the initial triggering state, thereby partially solving the problem of the wire 6512 interfering with the movement of the conductive sheet 6513 and avoiding collision between the conductive sheet 6513 and the wire 6512.

[0051] Reference Figure 9 and Figure 10 As shown, the pressing assembly 653 further includes a limiting ring 6533 , which is connected to the guide rod 6531 . The limiting ring 6533 is used to limit the distance that the second spring 6532 pushes the guide rod 6531 to move.

[0052] After the conductive sheet 6513 moves away from between the two wires 6512, the two second springs 6532 push the two guide rods 6531 closer to each other. If the moving distance of the guide rods 6531 is not limited, the wires 6512 on the two guide rods 6531 may abut against each other, causing the circuit to be connected. Therefore, a limiting ring 6533 is fixed on the guide rods 6531. When the telescopic arm 64 contracts and drives the conductive sheet 6513 to move away from between the two wires 6512, the second springs 6532 push the two guide rods 6531 closer to each other. 32 releases the thrust, pushing the guide rod 6531 toward the middle of the U-shaped frame 652. At this time, the limiting ring 6533 connected to the guide rod 6531 moves along with the guide rod 6531. When the limiting ring 6533 contacts and abuts the U-shaped frame 652, the limiting ring 6533 prevents the guide rod 6531 from moving further, making it impossible for the two guide rods 6531 to drive the two wires 6512 closer together, thereby preventing the two wires 6512 from abutting each other and ensuring that the circuit is restored to the open state.

[0053] Reference Figure 8 and Figure 11 As shown: the signal amplification structure 63 includes a second rotating shaft 631 and a speed amplification component 632; the second rotating shaft 631 is arranged parallel to one side of the first rotating shaft 6121, and the telescopic arm 64 is connected to the second rotating shaft 631; the two ends of the speed amplification component 632 are respectively connected to the first rotating shaft 6121 and the second rotating shaft 631.

[0054] Specifically, the speed amplification component 632 can use a gear transmission amplification structure, a lever amplification structure and a pulley transmission amplification structure, etc. The present application adopts a pulley transmission amplification structure. The speed amplification component 632 includes a first transmission wheel 6321, a second transmission wheel 6322 and a synchronous belt 6323. The first transmission wheel 6321 is connected to the first rotating shaft 6121, and the second transmission wheel 6322 is connected to the second rotating shaft 631. The two ends of the synchronous belt 6323 are respectively mounted on the first transmission wheel 6321 and the second transmission wheel 6322, and the diameter of the first transmission wheel 6321 is larger than the diameter of the second transmission wheel 6322.

[0055] During the water sample filtration monitoring process, when the water sample impact conversion fan 6122 drives the first rotating shaft 6121 to rotate, the first transmission wheel 6321 connected to the first rotating shaft 6121 rotates synchronously therewith. The first transmission wheel 6321 transmits the rotational power to the second transmission wheel 6322 through the synchronous belt 6323. Due to the diameter difference between the first transmission wheel 6321 and the second transmission wheel 6322 (assuming the transmission ratio is set to 2), the rotation speed of the second transmission wheel 6322 is amplified compared to the first transmission wheel 6321. For example, when the first transmission wheel 6321 rotates one circle, the second transmission wheel 6322 rotates two circles. The second transmission wheel 6322 then drives the second rotating shaft 631 to rotate at a high speed. The rotation of the second rotating shaft 631 directly acts on the telescopic arm 64 connected to it, which significantly increases the centrifugal force on the telescopic arm 64, thereby amplifying the speed change signal of the first rotating shaft 6121.

[0056] Reference Figure 3 and Figure 12 As shown: the telescopic arm 64 includes a sleeve 641, a telescopic rod 642 and a first spring 643; one end of the sleeve 641 is connected to the second rotating shaft 631; the telescopic rod 642 is slidably arranged in the sleeve 641, and one end of the telescopic rod 642 extends out of the sleeve 641 and is connected to the conductive sheet 6513; the first spring 643 is arranged in the sleeve 641, and the first spring 643 is used to apply a force on the telescopic rod 642 toward the inside of the sleeve 641.

[0057] In the water sample filtration monitoring process, when the first rotating shaft 6121 rotates due to the impact of the water sample on the conversion fan 6122, the second rotating shaft 631 of the signal amplifying structure 63 is amplified in speed under the action of the speed amplifying component 632 and starts to rotate at high speed. The sleeve 641 connected to the second rotating shaft 631 rotates at high speed, driving the telescopic rod 642 and the conductive sheet 6513 to move together. At this time, the telescopic rod 642 is acted upon by centrifugal force, the direction of which is away from the center of rotation and opposite to the direction of the force of the first spring 643 toward the inside of the sleeve 641. As the speed of the second rotating shaft 631 increases, the centrifugal force on the telescopic rod 642 gradually increases. When it is greater than When the elastic force of the first spring 643 is released, the telescopic rod 642 overcomes the resistance of the first spring 643, slides outward along the sleeve 641 and extends, driving the conductive sheet 6513 to move toward the trigger component 65. When the conductive sheet 6513 moves between the two wires 6512 of the trigger component 65, the circuit is connected and the monitoring signal is triggered. When the speed of the second rotating shaft 631 decreases and the centrifugal force decreases, the telescopic rod 642 is pulled back into the sleeve 641 under the elastic force of the first spring 643, driving the conductive sheet 6513 to reset, and the circuit returns to the open circuit state, thereby effectively transmitting the signal of the speed change of the first rotating shaft 6121 to the trigger component 65.

[0058] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A water sample filtering device for environmental monitoring with a quick filter cartridge replacement, comprising a frame (1) and a water adding assembly (2) and a detection assembly (3) arranged at the upper and lower ends of the frame (1), characterized in that: It also includes a filter station (4) and a plurality of filter monitoring mechanisms; The filter table (4) is horizontally arranged in the middle of the frame (1) and can reciprocate along its own length direction. The filter table (4) is provided with a plurality of docking grooves along its length direction, and a filter lining cylinder (5) is provided in each docking groove. A plurality of filter monitoring mechanisms are respectively arranged at the lower ends of a plurality of filter liner cylinders (5), the filter monitoring mechanisms include a flow rate monitoring mechanism (6) and a partition mechanism (7), the flow rate monitoring mechanism (6) includes a flow rate conversion structure (61), a first monitoring structure (62) and a second monitoring structure, the flow rate conversion structure (61) is used to convert the kinetic energy of the water flow into its own rotational motion, the first monitoring structure (62) and the second monitoring structure are used to monitor the change in the rotational speed of the flow rate conversion structure (61), the second monitoring structure includes a signal amplification structure (63), a telescopic arm (64) and a touch The trigger assembly (65) includes a signal amplifying structure (63) for amplifying the rotation speed of the first rotating shaft (6121), a telescopic arm (64) is connected to the signal amplifying structure (63), the telescopic arm (64) is extended by the centrifugal force and contacts the trigger assembly (65), the trigger assembly (65) is arranged on one side of the telescopic arm (64), the trigger assembly (65) includes a contact switch (651), the contact switch (651) includes a signal generating device (6511), two wires (6512) and a conductive sheet (6513), and the two ends of the signal generating device (6511) are respectively The trigger assembly (65) is connected to the two wires (6512), and the two wires (6512) are in an open circuit state. The conductive sheet (6513) is connected to the telescopic arm (64). When the conductive sheet (6513) is between the two wires (6512), the circuit is connected. The trigger assembly (65) further includes a U-shaped frame (652) and two pressing assemblies (653). The two pressing assemblies (653) are respectively arranged at both ends of the U-shaped frame (652). The pressing assembly (653) includes a guide rod (6531) and a second spring (6532). The guide rod (6531) is connected to the U-shaped frame (652). 52) a sliding connection, a wire (6512) is connected to a guide rod (6531), a second spring (6532) is used to apply a thrust to the guide rod (6531) toward the middle of the U-shaped frame (652), the signal amplification structure (63) includes a second rotating shaft (631) and a speed amplification component (632), the second rotating shaft (631) is arranged parallel to one side of the first rotating shaft (6121), and the telescopic arm (64) is connected to the second rotating shaft (631), and the two ends of the speed amplification component (632) are respectively connected to the first rotating shaft (6121) and the second rotating shaft (631); The plurality of partition mechanisms (7) are respectively arranged at the lower ends of the plurality of flow rate monitoring mechanisms.

2. The environmental monitoring water sample filtering device with a quick filter element replacement according to claim 1 is characterized in that: The flow rate conversion structure (61) includes two mounting plates (611) and a plurality of conversion components (612); Two mounting plates (611) are arranged parallel to each other on both sides of the filter lining cylinder (5); The plurality of conversion assemblies (612) are arranged between the two mounting plates (611) at equal intervals, and the plurality of conversion assemblies (612) divide the lower end of the filter liner cylinder (5) into a plurality of parts.

3. The environmental monitoring water sample filtering device with a quick filter element replacement according to claim 2 is characterized in that: The conversion assembly (612) includes a first rotating shaft (6121), conversion blades (6122) and a focusing cover (6123); Both ends of the first rotating shaft (6121) are rotatably connected to the two mounting plates (611) respectively; The conversion fan blade (6122) is sleeved on the first rotating shaft (6121); The focusing hood (6123) is arranged at the upper end of the conversion fan blade (6122), and the focusing hood (6123) is used to gather the water flow in the range covered by it to the conversion fan blade (6122).

4. The environmental monitoring water sample filtering device with a quick filter element replacement according to claim 1 is characterized in that: The first monitoring structure (62) includes a rotary encoder (621) capable of monitoring the rotational speed of the first rotating shaft (6121). The rotary encoder (621) is used to directly monitor the rotational speed of the first rotating shaft (6121).

5. The environmental monitoring water sample filtering device with a quick filter element replacement according to claim 1 is characterized in that: The abutting assembly (653) further includes a limiting ring (6533), which is connected to the guide rod (6531). The limiting ring (6533) is used to limit the distance that the second spring (6532) pushes the guide rod (6531) to move.

6. The environmental monitoring water sample filtering device with a quick filter element replacement according to claim 1 is characterized in that: The telescopic arm (64) includes a sleeve (641), a telescopic rod (642) and a first spring (643); One end of the sleeve (641) is connected to the second rotating shaft (631); The telescopic rod (642) is slidably disposed in the sleeve (641), and one end of the telescopic rod (642) extends out of the sleeve (641) and is connected to the conductive sheet (6513); The first spring (643) is disposed in the sleeve (641), and the first spring (643) is used to apply a force to the telescopic rod (642) toward the interior of the sleeve (641).

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