Water quality detection device for water quality environment protection

Abstract

The invention relates to the field of water quality detection, and discloses a water quality detection device for water quality environmental protection, which comprises a sample separation tank, a plurality of partition plates are arranged in the sample separation tank, the partition plates divide the sample separation tank into a flow division cavity, a sample separation cavity, a filter cavity and an air inlet cavity, the flow division cavity is communicated with a liquid discharge pipe, and the sample separation cavity is communicated with a sample separation channel; by accurately controlling the movement of the filter frame, the gas conveying and the liquid flow direction, the cross contamination of the water samples is reduced, and the independence and accuracy of the water samples with different filtering grades are ensured. Meanwhile, the design of the detachable filter tank and the replaceable filter screen is adopted, so that the maintenance convenience and adaptability of the device are improved, and the filter screens with different pore diameters can be flexibly replaced according to detection requirements so as to adapt to different water quality environments. According to the design of the device, the automation degree of water quality detection pretreatment is improved, manual operation errors and pollution are reduced, more accurate water sample data are provided for subsequent detection, and the reliability and comprehensiveness of water quality evaluation are enhanced.

Description

Technical Field

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

[0002] With the acceleration of industrialization, water environment protection has become a focus of social attention. Water quality testing technology has been widely used in ensuring water resource security and assessing water pollution, especially in the fields of water source protection, drinking water safety, and industrial wastewater discharge control.

[0003] In the process of water quality testing, the pretreatment of water samples after sampling is a key link that affects the accuracy and reliability of the test results. Water samples usually contain impurities such as suspended matter, sediment, algae and microorganisms, which may interfere with the detection instrument, causing errors and instability. Therefore, reducing the impact of impurities in water samples is an important issue in the design of water quality testing devices.

[0004] Extracting liquids with different degrees of filtration helps to more fully analyze the pollutants in the water. Coarse filtration removes large particles of pollutants and is suitable for analyzing total suspended solids, while fine filtration removes tiny particles and helps detect dissolved pollutants and fine pollutants such as microplastics.

[0005] Existing water quality testing pre-treatment filtration devices can usually only perform a single degree of filtration and cannot extract liquids of different filtration degrees at the same time. This limits the comprehensive analysis of dissolved and suspended pollutants and affects the accuracy of water quality testing. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a water quality detection device for water quality environmental protection that can extract liquids with different filtration degrees, aiming to alleviate the above-mentioned problems at least to a certain extent.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: A water quality detection device for water quality environmental protection, comprising: Sampling tank; A plurality of partitions are arranged in the sample separation tank, the partitions separate the sample separation tank into a flow separation chamber, a sample separation chamber, a filter chamber and an air intake chamber, the flow separation chamber is connected with a liquid discharge pipe, and the sample separation chamber is connected with a sample separation channel; A filter tank is arranged on the sample separation tank, the filter tank is detachably connected to the sample separation tank, a plurality of filter ports are opened on the filter tank, a filter frame is arranged on the outer wall of the filter tank, a plurality of filter screens with different apertures are arranged on the filter frame, and the apertures of the plurality of filter screens gradually decrease from bottom to top; A positioning platform is arranged on the outer wall of the sample separation tank, and a plurality of positioning openings are opened on the positioning platform. Sample separation test tubes are arranged in the positioning openings, and one of the sample separation test tubes corresponds to the sample separation channel; A filter component is provided between the sample separation tank and the filter tank, and is used to form a positive pressure on the gas delivered to the filter cavity to force the liquid to enter the filter tank through the filter port; A conveying component disposed between the filter tank and the filter cavity, used to form a negative pressure in the filter tank to convey the liquid into the diversion cavity; The positioning component arranged on the positioning platform is used to position the sample separation test tube in the positioning port when the filter tank is buckled on the sample separation tank.

[0008] Preferably, the filter component includes a push plate arranged in the air inlet cavity, the push plate is slidably connected to the air inlet cavity, the inner wall of the air inlet cavity is provided with a plurality of air inlets a connected to the outside, the height of the air inlet a is higher than the push plate, the bottom of the filter cavity is provided with an air inlet b connected to the air inlet cavity, a piston is slidably connected to the air inlet b, and a spring a is connected between the piston and the air inlet b.

[0009] Preferably, the filter component further comprises a motor connected to the air inlet cavity, a screw a is connected to the rotating shaft of the motor, the screw a is a reciprocating screw, and the push plate is threadedly connected to the screw a.

[0010] Preferably, the filter component can move the filter frame downward by a preset distance each time a preset amount of gas is delivered, so that a filter screen with another aperture corresponds to the filter port; The filter component also includes a connecting shaft rotatably connected to the bottom of the filter chamber, the connecting shaft passes through the filter chamber and the push plate and extends to the bottom of the push plate, the connecting shaft is connected to a conduit, the outer wall of the conduit is provided with a guide groove, the bottom of the push plate is connected to a guide rod slidably connected to the guide groove, a gear a is provided on the top of the connecting shaft, a ratchet mechanism is provided between the gear a and the connecting shaft, a lead screw b is rotatably connected in the filter chamber, the lead screw b is a reciprocating lead screw, a gear b meshing with the gear a is connected to the lead screw b, a push rod is threadedly connected to the lead screw b, one end of the push rod is a magnet, which is magnetically attracted to the filter frame, and the gear a is an incomplete gear.

[0011] Preferably, the conveying component includes an extraction chamber opened in the filter tank, the outer wall of the extraction chamber is provided with a plurality of diversion ports connected to the diversion chamber, a volute is provided in the extraction chamber, the bottom of the volute is connected with an extraction pipe extending to one side of the filter port, and an impeller is provided in the volute.

[0012] Preferably, the conveying component is capable of extracting liquid from the filter tank into the diversion chamber when the filtering component is working; The conveying component also includes a driving shaft connected to the impeller, the bottom of the driving shaft extends to the bottom of the filter tank and is connected to a connecting piece a, the top of the screw a extends into the filter chamber and is connected to a connecting piece b, the part of the screw a extending into the filter chamber is a part without threads, the top of the connecting piece b is connected to a spring telescopic rod, the bottom of the connecting piece a is provided with a limiting slide groove, and one end of the spring telescopic rod extends into the limiting slide groove.

[0013] Preferably, whenever the filter support moves downward by a preset distance a, the liquid can enter the sample separation chamber and be transported to the sample separation channel; The bottom of the diversion chamber is provided with multiple liquid inlets connected with the sample dividing chamber, the sample dividing chamber is slidably connected with a push ring, the top of the push ring is connected with a connecting rod a, the connecting rod b is slidably connected in the connecting rod a, the top of the connecting rod b is connected with a baffle for closing the liquid inlet, the inner wall of the sample dividing chamber is connected with a baffle located at the bottom of the baffle, and there is a spacing between the baffle and the baffle, wedge-shaped openings are respectively provided on both sides of the interior of the connecting rod a, a wedge-shaped strip adapted to the wedge-shaped opening is slidably connected to the connecting rod b, a spring b is connected between the wedge-shaped strip and the connecting rod b, the bottom of the push ring is connected with a connecting frame, the top of the screw b extends into the sample dividing chamber and is connected with a screw c, and the screw c is a reciprocating screw.

[0014] Preferably, the positioning component includes a connecting port opened on the positioning platform, the connecting port is communicated with the positioning port, a positioning block is slidably connected in the connecting port, a connecting plate is slidably connected in the connecting port, a top contact strip is connected to the top of the connecting plate and is located on one side of the positioning block, a spring c is provided between the positioning block and the connecting port and between the connecting plate and the connecting port, a connecting rod a is connected to one side of the connecting plate, a connecting rod b is slidably connected to the sample separation tank, a spring d is connected between the connecting rod b and the sample separation tank, a pressure ring is connected to the top of the connecting rod a, and a ball in contact with the pressure ring is connected to the bottom of the connecting rod b.

[0015] Preferably, a connecting ring is connected to the top cover of the filter tank, and the connecting ring is threadedly connected to the sample separation tank.

[0016] Preferably, whenever the filter rack moves downward by a preset distance b, the positioning platform can rotate by a preset angle so that another sample separation test tube corresponds to the sample separation channel, and the preset distance b is shorter than the preset distance a; A gear c is connected to the bottom of the positioning platform, a transmission shaft is rotatably connected to the sample separation tank, one end of the lead screw b extends to the bottom of the push plate and is connected to the transmission shaft by a chain, and a gear d adapted to the gear c is connected to the transmission shaft, and the gear d is an incomplete gear. In summary, the present invention mainly has the following beneficial effects: This application realizes efficient multi-stage filtration and synchronous sampling of water samples by setting up multi-stage filter screens and adjustable filter racks, and can extract liquids with different filtration degrees at the same time. This design improves the filtration efficiency through the combined action of positive and negative pressures, avoids uneven flow rate caused by gravity, and ensures the smooth progress of each filtration stage. By precisely controlling the movement of the filter rack, gas delivery and liquid flow direction, the cross-contamination of water samples is reduced, ensuring the independence and accuracy of water samples of different filtration levels. At the same time, the design of a detachable filter tank and replaceable filter screen improves the maintenance convenience and adaptability of the device, and can flexibly replace filter screens of different pore sizes according to detection requirements to adapt to different water quality environments. The design of this device improves the degree of automation of water quality detection pretreatment, reduces manual operation errors and pollution, provides more accurate water sample data for subsequent detection, and enhances the reliability and comprehensiveness of water quality assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional schematic diagram of the overall structure of the present invention; Figure 3 yes Figure 2 A schematic diagram of the enlarged local structure at point A in the middle; Figure 4 yes Figure 2 A magnified schematic diagram of the local structure at B in the middle; Figure 5 It is a schematic diagram of the ratchet mechanism structure of the present invention; Figure 6 is a schematic diagram of the catheter structure of the present invention; Figure 7 It is a schematic diagram of the push ring structure of the present invention; Figure 8 It is a cross-sectional schematic diagram of the structure of the connecting rod a and the connecting rod b of the present invention; Fig. 9 It is a schematic diagram of the structure of the connecting piece a and the connecting piece b of the present invention; Fig.10 It is a cross-sectional schematic diagram of the sample separation tank and the filter tank structure of the present invention.

[0018] Reference numerals: 100, sample separation tank; 101, partition; 102, flow separation chamber; 103, sample separation chamber; 104, filter chamber; 105, air inlet chamber; 106, drain pipe; 107, sample separation channel; 108, filter tank; 109, filter port; 110, filter stand; 111, positioning platform; 112, positioning port; 113, sample separation test tube; 114, connecting ring; 200, push plate; 201, air inlet a; 202, air inlet b; 203, piston; 204, spring a; 205, motor; 206, lead screw a; 207, connecting shaft; 208, guide tube; 209, guide groove; 210, guide rod; 211, gear a; 212, ratchet mechanism; 213, lead screw b; 214, gear b; 215, push rod; 216, magnet; 300, extraction chamber; 301, diversion port; 302, volute; 303, extraction pipe; 304, impeller; 305, drive shaft; 306, connecting piece a; 307, connecting piece b; 308, spring telescopic rod; 309, limit slide; 400, liquid inlet; 401, push ring; 402, connecting rod a; 403, connecting rod b; 404, baffle; 405, baffle; 406, wedge-shaped mouth; 407, wedge-shaped strip; 408, spring b; 409, connecting frame; 410, lead screw c; 500, connecting port; 501, positioning block; 502, connecting plate; 503, top contact strip; 504, spring c; 505, connecting rod a; 506, connecting rod b; 507, spring d; 508, pressure ring; 509, ball bearing; 510, gear c; 511, transmission shaft; 512, gear d; 513, chain. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0020] refer to Figure 1-Figure 10 , a water quality detection device for water quality environmental protection, comprising: Sampling tank 100; A plurality of partitions 101 are arranged in the sample separation tank 100, and the partitions 101 separate the sample separation tank 100 into a flow separation chamber 102, a sample separation chamber 103, a filter chamber 104 and an air inlet chamber 105. The flow separation chamber 102 is connected to a liquid discharge pipe 106, and the sample separation chamber 103 is connected to a sample separation channel 107; A filter tank 108 is disposed on the sample separation tank 100, the filter tank 108 is detachably connected to the sample separation tank 100, a plurality of filter ports 109 are provided on the filter tank 108, a filter frame 110 is provided on the outer wall of the filter tank 108, a plurality of filter screens with different apertures are provided on the filter frame 110, and the apertures of the plurality of filter screens gradually decrease from bottom to top; A positioning platform 111 is disposed on the outer wall of the sample separation tank 100 , and a plurality of positioning openings 112 are formed on the positioning platform 111 . Sample separation test tubes 113 are disposed in the positioning openings 112 , and one of the sample separation test tubes 113 corresponds to the sample separation channel 107 ; A filter component is provided between the sample separation tank 100 and the filter tank 108, and is used to convey gas to the filter chamber 104 to form a positive pressure to force the liquid to enter the filter tank 108 through the filter port 109; A conveying component disposed between the filter tank 108 and the filter cavity 104, used to form a negative pressure in the filter tank 108 to convey the liquid into the diversion cavity 102; The positioning component provided on the positioning platform 111 is used to position the sample separation test tube 113 in the positioning port 112 when the filter tank 108 is buckled on the sample separation tank 100; The filter component can intermittently deliver gas to the filter cavity 104, and can move the filter frame 110 downward by a preset distance each time a preset amount of gas is delivered, so that a filter screen of another caliber corresponds to the filter port 109; Wherein, whenever the filter support 110 moves downward by a preset distance a, the liquid can enter the sample separation chamber 103 and be transported to the sample separation channel 107; Wherein, the conveying component can extract the liquid in the filter tank 108 into the diversion chamber 102 when the filtering component performs work; Wherein, whenever the filter holder 110 moves downward by a preset distance b, the positioning platform 111 can rotate by a preset angle so that another sample-dividing test tube 113 corresponds to the sample-dividing channel 107, and the preset distance b is shorter than the preset distance a; By setting up the sample separation tank 100, when in use, the operator can put the water sample that needs to be tested taken from the river into the sample separation tank 100, and the filter chamber 104 is set to store it and wait for pretreatment. The filter tank 108 that cooperates with the sample separation tank 100 is buckled on the sample separation tank 100, and the filter frame 110 and the filter port 109 on the filter tank 108 reach the filter chamber 104. Specifically, under the action of the filter component, the gas is intermittently transported to the filter chamber 104, forming a positive pressure to push the liquid through the filter port 109 into the filter tank 108, and at the same time, the conveying component forms a negative pressure inside the filter tank 108, and the liquid is transported to the diversion chamber 102. The positive pressure can effectively reduce the resistance of the liquid when passing through the filter port 109, speed up the filtration speed, and avoid uneven flow rate caused by gravity, while the negative pressure can further guide the flow of the liquid. Such a setting can form a combined positive and negative pressure effect during the liquid filtration process, improve the filtration efficiency and ensure the smooth progress of different filtration stages. After the conveying component conveys the liquid into the diverting chamber 102, part of the liquid will flow out from the drain pipe 106 to avoid the pressure imbalance caused by excessive liquid. When the filter component conveys a preset amount of gas to the filter chamber 104, it means that a sufficient amount of liquid passes through the first filter screen (the filter screen with the largest aperture) into the filter tank 108 and is conveyed into the diverting chamber 102. At this time, the filter support 110 can be moved downward to a preset position, so that the second filter screen (with an aperture slightly smaller than the first filter screen) will follow the filter support 110 to move downward by a preset distance b. In this process, the positioning platform 111 can rotate, so that the multiple sample-dividing test tubes 113 on it alternate positions, so that another sample-dividing test tube 113 corresponds to the sample-dividing channel 107. And the liquid in the diverting chamber 102 can flow into the sample-dividing chamber 103 and be conveyed into the sample-dividing channel 107. At this time, the liquid filtered by the first filter screen can be released into one of the sample-dividing test tubes 113. It is worth noting that the purpose of connecting the diverter chamber 102 to the drain port is that, since the conveying component is in continuous operation, the volume of the sample-dividing test tube 113 cannot accommodate the liquid continuously conveyed by the conveying component, so after the liquid in the diverter chamber 102 enters the sample-dividing chamber 103 and fills the sample-dividing chamber 103 fully, a portion of the liquid will flow out from the drain port. In addition, after the sample-dividing chamber 103 is filled with the liquid filtered by the first filter screen, the sample-dividing chamber 103 will be closed, and even after the filter holder 110 is moved, when liquids of different filtration levels are also conveyed to the diverter chamber 102, this portion of the liquid will flow out from the drain port, ensuring that the liquid in the sample-dividing test tube 113 that has been completed will not be disturbed by the subsequent filtered liquid, thereby ensuring the independence and accuracy of water samples of different filtration levels. When the filter support 110 continues to move downward to a preset distance a so that the second filter section corresponds to the filter port 109, the filter component again delivers gas to the filter chamber 104, pushing the water sample through the second filter section into the filter tank 108, and enters the diversion chamber 102 under the action of the delivery component.At this time, the positioning table 111 rotates so that another vacant sample-dividing test tube 113 corresponds to the sample-dividing channel 107, ensuring that water samples of different filtration levels are stored in different test tubes. As the filter rack 110 moves further downward, the third filter screen (with a smaller aperture than the second filter screen) gradually aligns with the filter port 109, and continues the same filtering, conveying, and sample-dividing process. After each filtering stage is completed, the sample-dividing chamber 103 will automatically close to prevent the newly entered liquid from mixing into the stored water sample, and the excess liquid will still flow out through the drain port to maintain the pressure balance of the system. This multi-stage filtration and sample-dividing process continues until all the filter screens complete the filtration in turn, and each sample-dividing test tube 113 stores water samples of corresponding filtration levels. The design of the device can efficiently complete multi-stage filtration and synchronous sample-dividing in the same device, improve the degree of automation of water quality detection pretreatment, and avoid the error and pollution problems caused by manual replacement of filter screens and sample-dividing containers in traditional methods. By precisely controlling the movement of the filter holder 110, gas delivery, and liquid flow, not only can the cross contamination of water samples be reduced, but also the purity of filtered liquids at all levels can be ensured, providing more accurate water sample data for subsequent testing, and improving the reliability and comprehensiveness of water quality assessment. Further, the filter holder 110 and the filter screen are arranged on the filter tank 108, and the filter tank 108 and the sample separation tank 100 are arranged to be detachably connected, so that the filter tank 108 can be easily disassembled after the filtration and sampling are completed, which is convenient for the operator to replace the filter screen and clean the impurities remaining inside the filter tank 108, thereby improving the maintenance convenience of the device. In addition, the detachable design allows different filter screen combinations to be flexibly replaced according to the detection requirements, such as replacing filter screens of different apertures to adapt to the detection requirements of different water quality environments, thereby improving the scope of application of the device. Compared with the water quality detection pretreatment filtration device in the prior art, which can usually only perform a single degree of filtration, the present application can achieve the simultaneous extraction of liquids with different filtration degrees by setting a multi-stage filter screen and an adjustable filter holder 110. This setup allows the device to filter water samples at different levels of coarseness and fineness, thereby enabling a comprehensive analysis of suspended and dissolved pollutants in the water.

[0021] As a further solution of the present invention, the filter component includes a push plate 200 disposed in the air inlet cavity 105, the push plate 200 is slidably connected to the air inlet cavity 105, the inner wall of the air inlet cavity 105 is provided with a plurality of air inlets a201 connected to the outside, the height of the air inlet a201 is higher than the push plate 200, the bottom of the filter cavity 104 is provided with an air inlet b202 connected to the air inlet cavity 105, a piston 203 is slidably connected in the air inlet b202, and a spring a204 is connected between the piston 203 and the air inlet b202; By setting the piston 203, the piston 203 closes the air inlet b202 in the initial state, and the spring a204 can limit the position of the piston 203, so that the piston 203 always closes the air inlet b202. Specifically, the position of the push plate 200 can be moved upward, and the push plate 200 gradually moves upward to cover the air inlet a201, so that positive pressure can be generated in the air inlet chamber 105, and the positive pressure can force the gas to push the piston 203 to compress the spring a204, and the air inlet b202 can be opened, and the gas can enter the filter chamber 104 through the air inlet b202. When the push plate 200 begins to reset downward, the positive pressure in the air inlet chamber 105 gradually decreases, and the pushing effect of the gas is weakened. At this time, the restoring force of the spring a204 begins to play a role, pushing the piston 203 to move downward and gradually closing the air inlet b202. When the piston 203 completely closes the air inlet b202, the flow of the gas is cut off, and the system returns to the initial state, ready for the next gas delivery. The cooperation between the push plate 200 and the piston 203 ensures precise control of gas input, so that each gas delivery can be carried out according to a predetermined pressure and quantity. After the push plate 200 moves up and down a preset number of times, a preset amount of gas can be accurately delivered to the filter chamber 104, which can cooperate with the subsequent movement of the filter frame 110.

[0022] As a further solution of the present invention, the filter component further includes a motor 205 connected to the air inlet chamber 105, a lead screw a206 is connected to the rotating shaft of the motor 205, the lead screw a206 is a reciprocating lead screw, and the push plate 200 is threadedly connected to the lead screw a206; By setting the motor 205 to drive the lead screw a206, the push plate 200 can be precisely reciprocated. The motor 205 drives the lead screw a206 to rotate through the driving shaft 305, so that the push plate 200 moves back and forth along the predetermined track under the guidance of the lead screw a206. The reciprocating motion of the lead screw a206 can accurately control the up and down movement of the push plate 200, ensuring that the amount of gas input each time meets the predetermined requirements. This structure makes the movement of the push plate 200 more stable and controllable, and the push plate 200 can be precisely controlled by the drive of the motor 205, avoiding the unstable factors caused by mechanical errors or manual adjustments. The threaded connection between the push plate 200 and the lead screw a206 can ensure the stability of the push plate 200 during operation. In addition, by injecting gas into the filter chamber 104, not only can positive pressure be applied to the filter chamber 104 to improve the efficiency of liquid passing through the filter screen, but also the liquid to be treated in the filter chamber 104 can be disturbed, and the liquid that may produce precipitation can also be disturbed. When the liquid passes through filters with different pore sizes, each particle can be effectively filtered. This ensures that each level of filtration can be carried out efficiently and the graded filtration effect will not be affected by particle deposition or aggregation.

[0023] As a further solution of the present invention, the filter component also includes a connecting shaft 207 rotatably connected to the bottom of the filter chamber 104, the connecting shaft 207 passes through the filter chamber 104 and the push plate 200 and extends to the bottom of the push plate 200, the connecting shaft 207 is connected to a guide tube 208, the outer wall of the guide tube 208 is provided with a guide groove 209, the bottom of the push plate 200 is connected to a guide rod 210 slidably connected to the guide groove 209, and the top of the connecting shaft 207 is provided with a guide rod 210 slidably connected to the guide groove 209. There is a gear a211, a ratchet mechanism 212 is provided between the gear a211 and the connecting shaft 207, a lead screw b213 is rotatably connected in the filter chamber 104, the lead screw b213 is a reciprocating lead screw, a gear b214 meshing with the gear a211 is connected to the lead screw b213, a push rod 215 is threadedly connected to the lead screw b213, one end of the push rod 215 is a magnet 216, which is magnetically attracted to the filter frame 110, and the gear a211 is an incomplete gear; By setting a guide rod 210, when the push plate 200 moves upward, the guide rod 210 can be driven to move in a straight line. The guide rod 210 cooperates with the guide groove 209, and the guide tube 208 can rotate to a certain extent when the guide rod 210 moves upward. At this time, the connecting shaft 207 can rotate and then the gear a211 can be rotated through the ratchet mechanism 212. When the guide rod 210 moves downward with the push plate 200, the guide tube 208 and the connecting shaft 207 can be reset and rotated by cooperating with the guide groove 209. At this time, the ratchet mechanism 212 plays a unidirectional rotation role, allowing the connecting shaft 207 to idle on the inner wall of the gear a211, that is, when the push plate 200 moves up and down one round trip, it will only cause the gear a211 to rotate by a preset angle. The gear a211 is an incomplete gear. When the push plate 200 moves up and down for a preset number of times, the meshing of the gear a211 and the gear b214 can cause the screw b213 to rotate, and then the push rod 215 can move the filter frame 110 downward by a preset distance through the magnetic attraction with the filter frame 110, so that the filter screen with another aperture corresponds to the position of the filter port 109, and ensure the smooth multi-stage filtration. After the push rod 215 moves downward, the filter frame 110 moves downward to the limit position, and the filter screen with the smallest aperture corresponds to the filter port 109. The motor 205 continues to work, and after the push plate 200 continues to move up and down, the screw b213 can be used as a reciprocating screw to allow the push rod 215 to move upward to the initial position, so as to facilitate the next graded filtration of the sample liquid.

[0024] As a further solution of the present invention, the conveying component includes an extraction chamber 300 opened in the filter tank 108, and the outer wall of the extraction chamber 300 is provided with a plurality of diversion ports 301 connected to the diversion chamber 102, and a volute 302 is provided in the extraction chamber 300, and the bottom of the volute 302 is connected to an extraction pipe 303 extending to one side of the filter port 109, and an impeller 304 is provided in the volute 302; By providing the impeller 304, when in use, the impeller 304 can be rotated, and the rotation of the impeller 304 in the volute 302 will form a negative pressure inside the volute 302. This negative pressure will cause the liquid in the filter tank 108 to be attracted and extracted through the extraction pipe 303, ensuring that the filtered liquid can be removed in time. The design of the volute 302 helps to efficiently guide the liquid to flow to the extraction pipe 303, while ensuring the stable flow of the liquid during the filtration process, avoiding uneven flow rate caused by excessive liquid pressure or resistance, thereby improving the efficiency and accuracy of the entire filtration system.

[0025] As a further solution of the present invention, the conveying component also includes a driving shaft 305 connected to the impeller 304, the bottom of the driving shaft 305 extends to the bottom of the filter tank 108 and is connected to a connecting piece a306, the top of the lead screw a206 extends into the filter chamber 104 and is connected to a connecting piece b307, the portion of the lead screw a206 extending into the filter chamber 104 is a portion without threads, the top of the connecting piece b307 is connected to a spring telescopic rod 308, the bottom of the connecting piece a306 is provided with a limiting slide groove 309, and one end of the spring telescopic rod 308 extends into the limiting slide groove 309; By providing the connecting piece a306, after the filter tank 108 is plugged into the filter chamber 104 and fixed to the sample separation tank 100, the connecting piece a306 is located at the top of the connecting piece b307, and the spring telescopic rod 308 provided can be plugged into the limiting slide 309. When the motor 205 works to rotate the lead screw a206, while the push plate 200 reciprocates up and down to inject air into the filter chamber 104, the rotation of the lead screw a206 can drive the connecting piece b307 and the spring telescopic rod 308 to rotate. After the spring telescopic rod 308 cooperates with the limiting slide 309, when the spring telescopic rod 308 slides to the end of the limiting slide 309, it can drive the connecting piece b307 and the driving shaft 305 to rotate, and then the impeller 304 can be rotated in the process of the push plate 200 moving up and down, so that during the filtering process, the rotation of the impeller 304 can help extract liquid and push it to flow to the diversion chamber 102. This linkage design can also effectively balance the pressure and flow of the system. When the push plate 200 generates positive pressure to push the liquid through the filter screen, the rotation of the impeller 304 helps to extract the liquid, avoiding excessive pressure accumulation in the filter tank 108, and effectively controlling the flow and storage of the liquid. This can not only prevent equipment damage, but also improve the stability of the system. In addition, since the connecting piece a306 at the bottom of the filter tank 108 may have angle uncertainty when inserted, the spring telescopic rod 308 cannot accurately match the limiting slide groove 309. In order to solve this problem, the retractable characteristics of the spring telescopic rod 308 can be used. Even if the spring telescopic rod 308 and the limiting slide groove 309 are not fully docked in the initial state, when the connecting piece a306 is inserted, its compression effect on the spring telescopic rod 308 will cause it to shrink and store a certain amount of potential energy. As the screw a206 rotates, the up and down reciprocating motion of the push plate 200 drives the connecting piece b307 to rotate, thereby causing the spring telescopic rod 308 to gradually dock with the limiting slide groove 309 during the rotation process. Finally, the spring telescopic rod 308 will be snapped into the limiting slide groove 309, ensuring the precise fit between the components and avoiding the influence of angle uncertainty.

[0026] As a further solution of the present invention, the bottom of the flow dividing chamber 102 is provided with a plurality of liquid inlets 400 connected to the sample dividing chamber 103, a push ring 401 is slidably connected in the sample dividing chamber 103, a connecting rod a402 is connected to the top of the push ring 401, a connecting rod b403 is slidably connected in the connecting rod a402, a baffle 404 for closing the liquid inlet 400 is connected to the top of the connecting rod b403, a baffle 405 located at the bottom of the baffle 404 is connected to the inner wall of the sample dividing chamber 103, and the baffle 405 is connected to the inner wall of the sample dividing chamber 103. There is a distance between the sheet 405 and the baffle 404, wedge-shaped openings 406 are respectively provided on both sides of the interior of the connecting rod a402, a wedge-shaped strip 407 adapted to the wedge-shaped opening 406 is slidably connected to the connecting rod b403, a spring b408 is connected between the wedge-shaped strip 407 and the connecting rod b403, a connecting frame 409 is connected to the bottom of the push ring 401, the top of the lead screw b213 extends into the sample dividing chamber 103 and is connected to a lead screw c410, and the lead screw c410 is a reciprocating lead screw; By setting spring b408, spring b408 can use its own potential energy to make wedge strip 407 squeeze wedge opening 406, form a certain friction force between wedge opening 406, support the position of baffle 404, and make baffle 404 close liquid inlet 400. When impeller 304 rotates to transport liquid into extraction chamber 300, liquid flows into diversion chamber 102 through diversion opening 301, and liquid inlet 400 is in a closed state, and part of the liquid extracted from the first section will flow out from the discharge port. When screw b213 rotates to make push rod 215 drive filter frame 110 to move downward, screw c410 rotates with screw b213 to make connecting frame 409 drive push ring 401 to move downward. In this process, by utilizing the different lengths and pitches of the lead screw b213 and the lead screw c410, the filter support 110 drives the first filter screen to move downward before it completely leaves the filter port 109, and the push ring 401 is moved downward, and the baffle 404 is moved to open the liquid inlet 400 through the cooperation of the wedge strip 407 and the wedge port 406, so that the liquid filtered by the first filter screen can reach the sample separation chamber 103. When the filter support 110 moves downward to allow the second filter screen to reach the filter port 109 but has not stopped moving, the filter support 110 moves to the limit position on the lead screw c410 and starts to reset upward, and the baffle 404 can close the liquid inlet 400 in time to prevent the liquid of different filter sections from entering the sample separation chamber 103. Through the above design, the cooperation between the baffle 404 and the liquid inlet 400 can ensure that the liquid in the sample separation chamber 103 is only diverted as needed during the movement of the filter support 110, and prevent the liquid of different filter sections from cross-mixing. Furthermore, when the push ring 401 moves upward and the liquid inlet 400 is closed by the baffle 404, the movement of the push ring 401 can push the liquid in the sample-dividing chamber 103, allowing the liquid to flow into the sample-dividing test tube 113 through the diversion channel. Through the precise control of the push ring 401, the flow path of the liquid can be effectively guided, ensuring that the liquid treatment process in the sample-dividing chamber 103 is both efficient and accurate. In addition, a connecting rod a402 and a connecting rod b403 are arranged between the push ring 401 and the baffle 404, which can ensure that the liquid inlet 400 is opened in time when the push ring 401 moves downward, and the liquid inlet 400 is closed in time when the push ring 401 moves upward. Specifically, the spring b408 provides enough force to squeeze the wedge-shaped strip 407 against the wedge-shaped opening 406 to form a certain friction force. When the push ring 401 moves downward, the linkage action of the connecting rod a402 and the connecting rod b403 can effectively push the baffle 404 downward, thereby opening the liquid inlet 400.When the baffle 404 reaches the position of the baffle 405, due to the obstruction, the push ring 401 continues to move downward, and the movement force of the push ring 401 overcomes the potential energy of the spring b408 and the friction between the wedge-shaped mouth 406 and the wedge-shaped strip 407, so that the spring b408 is compressed, and the wedge-shaped strip 407 is separated from the wedge-shaped mouth 406, so that the follow-up cooperation between the push ring 401 and the baffle 404 is released. When the push ring 401 starts to move upward, the friction force plays a role again, and the contact friction between the wedge-shaped strip 407 and the wedge-shaped mouth 406 can make the push ring 401 and the baffle 404 move synchronously, ensuring that the liquid inlet 400 is closed in time when needed. The whole process uses the elasticity of the spring b408 and the friction between the wedge-shaped strip 407 and the wedge-shaped mouth 406 to ensure the rapid opening and closing and stable control of the liquid inlet 400. The purpose of this design is to ensure that the liquid can be effectively divided and quantified at different processing stages, thereby avoiding unnecessary leakage or mixing and improving the accuracy and reliability of sample separation.

[0027] As a further solution of the present invention, the positioning component includes a connecting port 500 opened on the positioning platform 111, the connecting port 500 is communicated with the positioning port 112, a positioning block 501 is slidably connected in the connecting port 500, a connecting plate 502 is slidably connected in the connecting port 500, a top contact strip 503 is connected to the top of the connecting plate 502 and is located on one side of the positioning block 501, a spring c504 is provided between the positioning block 501 and the connecting port 500, and between the connecting plate 502 and the connecting port 500, a connecting rod a505 is connected to one side of the connecting plate 502, a connecting rod b506 is slidably connected to the sample separation tank 100, a spring d507 is connected between the connecting rod b506 and the sample separation tank 100, a pressure ring 508 is connected to the top of the connecting rod a505, ​​and a ball 509 in contact with the pressure ring 508 is connected to the bottom of the connecting rod b506; By setting the connecting rod b506, when the filter tank 108 is buckled on the sample separation tank 100, the top cover of the filter tank 108 can press the connecting rod b506, and the pressure ring 508 and the connecting rod a505 can be moved downward through the connecting rod b506 and the ball 509. When the connecting rod a505 moves downward, it can drive the connecting plate 502 and the top contact strip 503 to move downward. When the top contact strip 503 moves, it can squeeze the position of the positioning block 501, so that the positioning block 501 can slide along the connecting port 500 and move closer to the sample separation tube 113. During the movement of the positioning block 501, it will eventually contact the sample separation tube 113 and squeeze and fix the sample separation tube 113, thereby ensuring the stability and accuracy of the sample separation tube 113 during the entire operation. The purpose of this arrangement is to ensure that the combination of the filter tank 108 and the sample separation tank 100 can effectively push the positioning block 501 to complete precise positioning and fixing work through the linkage of the connecting rod b506, the ball 509, the connecting rod a505 and other components, thereby improving the fixing effect of the sample separation tube 113 and ensuring the accuracy and consistency of the sample separation operation.

[0028] As a further solution of the present invention, a connecting ring 114 is connected to the top cover of the filter tank 108, and the connecting ring 114 is threadedly connected to the sample separation tank 100; By setting the connection ring 114 to be threadedly connected to the sample separation tank 100, the top cover of the filter tank 108 can be detachably connected to the sample separation tank 100. This structure allows the filter tank 108 to be easily disassembled when it needs to be replaced or cleaned, without the need for complicated tools or operations. At the same time, the threaded connection can ensure a tight connection to prevent loosening or leakage during use. The advantages of the detachable connection are that, first, it can provide convenient maintenance and replacement operations, and secondly, the threaded connection has strong stability, which can effectively ensure the sealing and firmness between the filter tank 108 and the sample separation tank 100 during operation.

[0029] As a further solution of the present invention, a gear c510 is connected to the bottom of the positioning platform 111, a transmission shaft 511 is rotatably connected to the sample separation tank 100, one end of the lead screw b213 extends to the bottom of the push plate 200, and a chain 513 is connected to the transmission shaft 511, and a gear d512 adapted to the gear c510 is connected to the transmission shaft 511, and the gear d512 is an incomplete gear; By setting the gear c510 and the gear d512 to cooperate, it can be ensured that when the filter holder 110 moves downward by a preset distance b (i.e., the filter holder 110 moves but the next filter screen is not yet matched with the filter port 109, and the push ring 401 moves downward to the limit position and is about to start to reset upward), the positioning platform 111 can rotate by a preset angle, so that another sample-dividing test tube 113 can accurately dock with the sample-dividing channel 107. Specifically, the cooperation between the gear c510 and the gear d512 will drive the positioning platform 111 to rotate through the transmission shaft 511, further ensuring that whenever the filter holder 110 moves downward and reaches the preset distance b, the positioning platform 111 will automatically adjust the angle and accurately position the next sample-dividing test tube 113 to the corresponding sample-dividing channel 107. The setting of this structure is closely related to the movement of the filter holder 110. The downward movement of the filter holder 110 drives the rotation of the lead screw b213 and the transmission shaft 511, and then the positioning platform 111 rotates through the chain 513 and the gear transmission. The design of this linkage mechanism ensures that when the filter holder 110 moves to the set position, the positioning platform 111 can automatically adjust the docking angle of the sample-dividing test tube 113 according to the position of the filter holder 110, so as to be ready for the next sample-dividing process in time. Through the setting of the incomplete gear, the engagement of the gear d512 and the gear c510 ensures that during the downward movement of the filter holder 110, the positioning platform 111 can rotate to a preset angle, so as to correctly dock the next sample-dividing test tube 113 to the sample-dividing channel 107. The special structural design of the incomplete gear enables the gear d512 and the gear c510 to automatically disengage after the filter holder 110 completes the downward movement and the next section of the filter screen is completely docked with the filter port 109, preventing excessive rotation and preventing the positioning platform 111 from continuing to rotate. The key to this design lies in precise motion control, which ensures that the rotation of the positioning platform 111 only occurs at a specific stage of the filter holder 110, avoiding positioning errors or unnecessary operations caused by excessive rotation. The disengagement mechanism of the gear d512 and the gear c510 can effectively prevent excessive rotation, maintain the stability and reliability of the system, and ensure that after the filter screen is docked with the filter port 109, the sample tube 113 can smoothly distribute the liquid.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water quality detection device for water quality environmental protection, comprising a sample separation tank (100), wherein a plurality of partitions (101) are provided in the sample separation tank (100), characterized in that: The partition (101) separates the sample separation tank (100) into a flow separation chamber (102), a sample separation chamber (103), a filter chamber (104) and an air inlet chamber (105); the flow separation chamber (102) is connected to a liquid discharge pipe (106), and the sample separation chamber (103) is connected to a sample separation channel (107); A filter tank (108) is arranged on the sample separation tank (100), the filter tank (108) is detachably connected to the sample separation tank (100), a plurality of filter ports (109) are provided on the filter tank (108), a filter frame (110) is provided on the outer wall of the filter tank (108), a plurality of filter screens with different apertures are arranged on the filter frame (110), and the apertures of the plurality of filter screens gradually decrease from bottom to top; A positioning platform (111) is arranged on the outer wall of the sample separation tank (100), the positioning platform (111) is provided with a plurality of positioning openings (112), sample separation test tubes (113) are arranged in the positioning openings (112), and one of the sample separation test tubes (113) corresponds to the sample separation channel (107); A filter component is provided between the sample separation tank (100) and the filter tank (108), and is used to generate positive pressure on the gas transported by the filter chamber (104) to force the liquid to enter the filter tank (108) through the filter port (109); a conveying component disposed between the filter tank (108) and the filter chamber (104), used to form a negative pressure in the filter tank (108) to convey the liquid into the diversion chamber (102); A positioning component disposed on the positioning platform (111) is used to position the sample separation test tube (113) in the positioning opening (112) when the filter tank (108) is buckled onto the sample separation tank (100).

2. A water quality detection device for water quality environmental protection according to claim 1, characterized in that: The filter component comprises a push plate (200) disposed in the air inlet cavity (105), the push plate (200) being slidably connected to the air inlet cavity (105), a plurality of air inlets a (201) communicating with the outside are provided on the inner wall of the air inlet cavity (105), the height of the air inlet a (201) being higher than the push plate (200), an air inlet b (202) communicating with the air inlet cavity (105) being provided at the bottom of the filter cavity (104), a piston (203) being slidably connected inside the air inlet b (202), and a spring a (204) being connected between the piston (203) and the air inlet b (202).

3. A water quality detection device for water quality environmental protection according to claim 2, characterized in that: The filter component also includes a motor (205) connected to the air inlet chamber (105), a screw a (206) is provided on the rotating shaft of the motor (205), the screw a (206) is a reciprocating screw, and the push plate (200) is threadedly connected to the screw a (206).

4. A water quality detection device for water quality environmental protection according to claim 2, characterized in that: The filter component is capable of moving the filter frame (110) downward by a preset distance each time a preset amount of gas is delivered, so that a filter screen with another aperture corresponds to the filter port (109); The filter component further comprises a connecting shaft (207) rotatably connected to the bottom of the filter chamber (104); the connecting shaft (207) passes through the filter chamber (104) and the push plate (200) and extends to the bottom of the push plate (200); a guide tube (208) is connected to the connecting shaft (207); a guide groove (209) is formed on the outer wall of the guide tube (208); a guide rod (210) slidably connected to the guide groove (209) is connected to the bottom of the push plate (200); a gear a (211) is provided on the top of the connecting shaft (207); ), a ratchet mechanism (212) is provided between the gear a (211) and the connecting shaft (207), a lead screw b (213) is rotatably connected in the filter chamber (104), the lead screw b (213) is a reciprocating lead screw, a gear b (214) meshing with the gear a (211) is connected to the lead screw b (213), a push rod (215) is threadedly connected to the lead screw b (213), one end of the push rod (215) is a magnet (216) which is magnetically attracted to the filter frame (110), and the gear a (211) is an incomplete gear.

5. The water quality detection device for water quality environmental protection according to claim 3 is characterized in that: The conveying component comprises an extraction chamber (300) opened in the filter tank (108); a plurality of diversion ports (301) communicating with the diversion chamber (102) are opened on the outer wall of the extraction chamber (300); a volute (302) is arranged in the extraction chamber (300); the bottom of the volute (302) is connected to an extraction pipe (303) extending to one side of the filter port (109); and an impeller (304) is arranged in the volute (302).

6. A water quality detection device for water quality environmental protection according to claim 5, characterized in that: The conveying component is capable of extracting liquid from the filter tank (108) into the diversion chamber (102) when the filtering component is working; The conveying component also includes a driving shaft (305) connected to the impeller (304); the bottom of the driving shaft (305) extends to the bottom of the filter tank (108) and is connected to a connecting piece a (306); the top of the lead screw a (206) extends into the filter chamber (104) and is connected to a connecting piece b (307); the portion of the lead screw a (206) extending into the filter chamber (104) is a portion without threads; the top of the connecting piece b (307) is connected to a spring telescopic rod (308); a limiting slide groove (309) is provided at the bottom of the connecting piece a (306); one end of the spring telescopic rod (308) extends into the limiting slide groove (309).

7. A water quality detection device for water quality environmental protection according to claim 4, characterized in that: Whenever the filter support (110) moves downward by a preset distance a, liquid can enter the sample separation chamber (103) and be transported to the sample separation channel (107); The bottom of the flow dividing chamber (102) is provided with a plurality of liquid inlets (400) which are in communication with the sample dividing chamber (103); a push ring (401) is slidably connected in the sample dividing chamber (103); a connecting rod a (402) is connected to the top of the push ring (401); a connecting rod b (403) is slidably connected in the connecting rod a (402); a baffle (404) for closing the liquid inlet (400) is connected to the top of the connecting rod b (403); a baffle (405) located at the bottom of the baffle (404) is connected to the inner wall of the sample dividing chamber (103); the baffle (405) is in contact with the inner wall of the sample dividing chamber (103); There is a spacing between the baffles (404), wedge-shaped openings (406) are respectively provided on both sides of the interior of the connecting rod a (402), a wedge-shaped strip (407) adapted to the wedge-shaped opening (406) is slidably connected to the connecting rod b (403), a spring b (408) is connected between the wedge-shaped strip (407) and the connecting rod b (403), a connecting frame (409) is connected to the bottom of the push ring (401), the top of the lead screw b (213) extends into the sample dividing chamber (103) and is connected to a lead screw c (410), and the lead screw c (410) is a reciprocating lead screw.

8. The water quality detection device for water quality environmental protection according to claim 1 is characterized in that: The positioning component comprises a connection port (500) provided on the positioning platform (111), the connection port (500) being in communication with the positioning port (112), a positioning block (501) being slidably connected in the connection port (500), a connecting plate (502) being slidably connected in the connection port (500), a top contact strip (503) being connected to the top of the connecting plate (502) and being located on one side of the positioning block (501), and a connection strip (503) being provided between the positioning block (501) and the connection port (500) and the connecting plate (502). 02) and the connecting port (500), a spring c (504) is provided between the connecting plate (502) and the connecting port (500), a connecting rod a (505) is connected to one side of the connecting plate (502), a connecting rod b (506) is slidably connected to the sample separation tank (100), a spring d (507) is connected between the connecting rod b (506) and the sample separation tank (100), a pressure ring (508) is connected to the top of the connecting rod a (505), and a ball (509) in contact with the pressure ring (508) is connected to the bottom of the connecting rod b (506).

9. The water quality detection device for water quality environmental protection according to claim 1, characterized in that: A connecting ring (114) is connected to the top cover of the filter tank (108), and the connecting ring (114) is threadedly connected to the sample separation tank (100).

10. The water quality detection device for water quality environmental protection according to claim 4, characterized in that: Whenever the filter rack (110) moves downward by a preset distance b, the positioning platform (111) can rotate by a preset angle so that another sample separation test tube (113) corresponds to the sample separation channel (107), and the preset distance b is shorter than the preset distance a; The bottom of the positioning platform (111) is connected to a gear c (510), the sample separation tank (100) is rotatably connected to a transmission shaft (511), one end of the lead screw b (213) extends to the bottom of the push plate (200), and a chain (513) is connected to the transmission shaft (511), and the transmission shaft (511) is connected to a gear d (512) adapted to the gear c (510), and the gear d (512) is an incomplete gear.

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