CN119935698B - A water quality detection device for environmental protection - Google Patents

Abstract

The invention relates to the field of water quality detection and discloses a water quality detection device for environmental protection, which comprises a sample separating tank, wherein a plurality of partition plates are arranged in the sample separating tank, the partition plates divide the sample separating tank into a flow dividing cavity, a sample dividing cavity, a filtering cavity and an air inlet cavity, a liquid discharge pipe is communicated with the flow dividing cavity, a sample dividing channel is communicated with the flow dividing cavity, and through accurately controlling the movement of a filter frame, gas conveying and liquid flow direction, the cross contamination of water samples is reduced, and the independence and the accuracy of the water samples with different filtering grades are ensured. Meanwhile, the detachable filter tank and the replaceable filter screen are adopted, so that the maintenance convenience and adaptability of the device are improved, and the filter screens with different apertures can be flexibly replaced according to detection requirements so as to adapt to different water quality environments. The design of the device improves the automation degree 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.

Description

Water quality detection device for environmental protection

Technical Field

The invention relates to the technical field of water quality detection, in particular to a water quality detection device for environmental protection.

Background

Along with the acceleration of the industrialization process, water environment protection becomes a focus of social attention. The water quality detection technology is widely applied in the aspects of guaranteeing the safety of water resources and evaluating the pollution of water bodies, and particularly in the fields of water source protection, drinking water safety, industrial wastewater discharge control and the like.

In the water quality detection process, the pretreatment of the sampled water sample is a key link affecting the accuracy and reliability of the detection result. Water samples often contain suspended matter, sediment, algae, microorganisms, and other impurities that can interfere with the instrumentation and cause errors and instability. Therefore, reducing the effect of impurities in water samples is an important issue in the design of water quality detection devices.

Extracting liquids of varying degrees of filtration facilitates a more comprehensive analysis of contaminants in water. Coarse filtration removes large particle pollutants, is suitable for analyzing total suspended solids, and fine filtration removes tiny particles, thereby helping to detect dissolved pollutants, tiny pollutants such as microplastic and the like.

The existing water quality detection pretreatment filtering device can only perform single-degree filtering generally, and cannot extract liquid with different filtering degrees at the same time. Thus, the comprehensive analysis of dissolved and suspended pollutants is limited, and the accuracy of water quality detection is affected.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention provides a water quality detection device for environmental protection capable of extracting liquids of different filtration degrees, aiming at alleviating the above problems at least to some extent.

The technical aim of the invention is realized by the following technical scheme:

a water quality testing device for environmental protection, comprising:

A sample separating tank;

the sample separating tank is provided with a plurality of separating plates, the separating plates divide the sample separating tank into a flow dividing cavity, a sample dividing cavity, a filtering cavity and an air inlet cavity, the flow dividing cavity is communicated with a liquid discharge pipe, and the sample dividing cavity is communicated with a sample dividing channel;

the filter tank is arranged on the sample separating tank and detachably connected with the sample separating tank, a plurality of filter openings are formed in 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 filter screens are gradually reduced from bottom to top;

the positioning table is arranged on the outer wall of the sample separating tank, a plurality of positioning ports are formed in the positioning table, sample separating test tubes are arranged in the positioning ports, and one of the sample separating test tubes corresponds to the sample separating channel;

a filtering component is arranged between the sample separating tank and the filtering tank and is used for conveying gas to the filtering cavity to form positive pressure so as to force liquid to enter the filtering tank through the filtering port;

The conveying component is arranged between the filter tank and the filter cavity and is used for forming negative pressure in the filter tank to convey liquid into the diversion cavity;

the positioning component is arranged on the positioning table and is used for positioning the sample separating test tube in the positioning port when the filter tank is buckled on the sample separating tank.

Preferably, the filtering component comprises a push plate arranged in the air inlet cavity, the push plate is in sliding connection with the air inlet cavity, a plurality of air inlets a communicated with the outside are formed in the inner wall of the air inlet cavity, the height of each air inlet a is higher than that of the push plate, an air inlet b communicated with the air inlet cavity is formed in the bottom of the filtering cavity, a piston is in sliding connection with the air inlet b, and a spring a is connected between the piston and the air inlet b.

Preferably, the filter component further comprises a motor connected to the air inlet cavity, a screw rod a is connected to a rotating shaft of the motor, the screw rod a is a reciprocating screw rod, and the push plate is in threaded connection with the screw rod a.

Preferably, the filter component can move downwards by a preset distance after delivering a preset amount of gas, so that a filter screen with another aperture corresponds to the filter port;

The filter component further comprises a connecting shaft which is rotationally connected to the bottom of the filter cavity, the connecting shaft penetrates through the filter cavity and the pushing plate to extend to the bottom of the pushing plate, a guide pipe is connected to the connecting shaft, a guide groove is formed in the outer wall of the guide pipe, a guide rod which is slidably connected with the guide groove is connected to the bottom of the pushing plate, a gear a is arranged at the top of the connecting shaft, a ratchet mechanism is arranged between the gear a and the connecting shaft, a lead screw b is rotationally connected to the filter cavity and is a reciprocating lead screw, a gear b meshed with the gear a is connected to the lead screw b, a pushing rod is connected to the lead screw b in a threaded mode, one end of the pushing rod is a magnet and is magnetically attracted to the filter frame, and the gear a is an incomplete gear.

Preferably, the conveying component comprises an extraction cavity arranged in the filter tank, a plurality of shunt ports communicated with the shunt cavity are formed in the outer wall of the extraction cavity, a volute is arranged in the extraction cavity, an extraction pipe extending to one side of the filter port is communicated with the bottom of the volute, and an impeller is arranged in the volute.

Preferably, the conveying component can draw the liquid in the filter tank into the diversion cavity when the filtering component performs work;

The conveying component further comprises a driving shaft connected to the impeller, the bottom of the driving shaft extends to the bottom of the filter tank and is connected with a connecting sheet a, the top of the screw rod a extends to the inside of the filter cavity and is connected with a connecting sheet b, the part of the screw rod a extending to the filter cavity is a part without threads, the top of the connecting sheet b is connected with a spring telescopic rod, the bottom of the connecting sheet a is provided with a limiting chute, and one end of the spring telescopic rod extends to the inside of the limiting chute.

Preferably, each time the filter frame moves downward by a preset distance a, liquid can enter the sample separating cavity and be conveyed into the sample separating channel;

The utility model discloses a sample separation device, including branch appearance chamber, the bottom of branch appearance chamber set up a plurality of with the inlet that divides appearance chamber to communicate, the sliding connection has the push ring in the branch appearance chamber, the top of push ring is connected with connecting rod a, the sliding connection has connecting rod b in the connecting rod a, connecting rod b's top is connected with the baffle that is used for sealing the inlet, the inner wall in branch appearance chamber is connected with the separation blade that is located the baffle bottom, the separation blade with have the interval between the baffle, the wedge has been seted up respectively to connecting rod a's inside both sides, sliding connection has with the wedge of wedge adaptation on the connecting rod b, wedge with be connected with spring b between the connecting rod b, push ring's bottom is connected with the link, lead screw b's top extends to divide appearance intracavity and is connected with lead screw c, lead screw c is reciprocal lead screw.

Preferably, the locating part is including seting up in connector on the locating bench, the connector with the locating port intercommunication, sliding connection has the locating piece in the connector, sliding connection has the connecting plate in the connector, the top of connecting plate is connected with the top and touches the strip, is located one side of locating piece, the locating piece with between the connector the connecting plate with all be equipped with spring c between the connector, one side of connecting plate is connected with connecting rod a, sliding connection has connecting rod b on the branch appearance jar, connecting rod b with be connected with spring d between the branch appearance jar, connecting rod a's top is connected with the clamping ring, connecting rod b's bottom be connected with the ball of clamping ring contact.

Preferably, a connecting ring is connected to the top cover of the filter tank, and the connecting ring is in threaded connection with the sample separating tank.

Preferably, each time the filter frame moves downwards by a preset distance b, the positioning table can rotate by a preset angle to enable the other sample separating test tube to correspond to the sample separating channel, and the preset distance b is shorter than the preset distance a;

the bottom of locating bench is connected with gear c, rotate on the branch appearance jar and be connected with the transmission shaft, lead screw b's one end extends to the below of push pedal, and with be connected with the chain between the transmission shaft, be connected with on the transmission shaft with gear d of gear c adaptation, gear d is incomplete gear.

In summary, the invention has the following advantages:

According to the application, by arranging the multi-stage filter screen and the adjustable filter frame, the high-efficiency multi-stage filtration and synchronous sample separation of the water sample are realized, and the liquids with different filtration degrees can be extracted simultaneously. The design improves the filtering efficiency through the combined action of positive and negative pressure, avoids uneven flow velocity caused by the action of gravity, and ensures the smooth operation of each filtering stage. Through the accurate control of the movement of the filter frame, the gas conveying and the liquid flow direction, the cross contamination of water samples is reduced, and the independence and the accuracy of the water samples with different filter grades are ensured. Meanwhile, the detachable filter tank and the replaceable filter screen are adopted, so that the maintenance convenience and adaptability of the device are improved, and the filter screens with different apertures can be flexibly replaced according to detection requirements so as to adapt to different water quality environments. The design of the device improves the automation degree 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.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;

FIG. 3 is an enlarged schematic view of a partial structure at A in FIG. 2;

FIG. 4 is an enlarged schematic view of a partial structure at B in FIG. 2;

FIG. 5 is a schematic view of a ratchet mechanism of the present invention;

FIG. 6 is a schematic view of the catheter structure of the present invention;

FIG. 7 is a schematic illustration of a push ring structure of the present invention;

FIG. 8 is a schematic cross-sectional view of the structure of connecting rod a and connecting rod b of the present invention;

FIG. 9 is a schematic diagram of the structures of the connecting piece a and the connecting piece b;

FIG. 10 is a schematic cross-sectional view of the sample separation tank and canister structure of the present invention.

Reference numerals:

100. Sample separating tank, 101, partition board, 102, flow dividing cavity, 103, sample dividing cavity, 104, filter cavity, 105, air inlet cavity, 106, liquid discharge pipe, 107, sample dividing channel, 108, filter tank, 109, filter port, 110, filter frame, 111, positioning table, 112, positioning port, 113, sample dividing test tube, 114, and 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, conduit, 209, guide slot, 210, guide rod, 211, gear a, 212, ratchet mechanism, 213, lead screw b, 214, gear b, 215, push rod, 216, magnet;

300. Extracting cavity 301, split-flow port 302, volute 303, extracting pipe 304, impeller 305, driving shaft 306, connecting piece a 307, connecting piece b 308, spring telescopic rod 309, limit chute;

400. Liquid inlet 401, push ring 402, connecting rod a 403, connecting rod b 404, baffle 405, baffle plate 406, wedge-shaped opening 407, wedge-shaped strip 408, spring b 409, connecting frame 410 and screw c;

500. Connecting ports 501, positioning blocks 502, connecting plates 503, top contact strips 504, springs c, 505, connecting rods a, 506, connecting rods b, 507, springs d, 508, compression rings 509, balls 510, gears c, 511, transmission shafts 512, gears d, 513 and chains.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 10, a water quality testing apparatus for environmental protection, comprising:

a sample separation tank 100;

The separation tank 100 is divided into a flow distribution cavity 102, a sample distribution cavity 103, a filter cavity 104 and an air inlet cavity 105 by the separation plate 101, wherein the flow distribution cavity 102 is communicated with a liquid discharge pipe 106, and the sample distribution cavity 103 is communicated with a sample distribution channel 107;

The filter tank 108 is arranged on the sample separating tank 100, the filter tank 108 is detachably connected with the sample separating tank 100, a plurality of filter openings 109 are formed in the filter tank 108, a filter frame 110 is arranged 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 filter screens are gradually reduced from bottom to top;

the positioning table 111 is arranged on the outer wall of the sample separating tank 100, a plurality of positioning ports 112 are formed in the positioning table 111, sample separating test tubes 113 are arranged in the positioning ports 112, and one of the sample separating test tubes 113 corresponds to the sample separating channel 107;

A filtering component is arranged between the sample separating tank 100 and the filtering tank 108, and is used for conveying gas to the filtering cavity 104 to form positive pressure so as to force liquid to enter the filtering tank 108 through the filtering port 109;

a delivery member disposed between the canister 108 and the filter chamber 104 for creating a negative pressure within the canister 108 to deliver liquid into the diversion chamber 102;

A positioning member provided on the positioning table 111 for positioning the sample separation test tube 113 in the positioning port 112 when the canister 108 is fastened to the sample separation canister 100;

Wherein the filtering component can intermittently convey gas to the filtering cavity 104, and can move the filtering frame 110 downwards for a preset distance after conveying a preset amount of gas each time, so that the filtering screen with another caliber corresponds to the filtering opening 109;

Wherein, every time the filter frame 110 moves downward by a preset distance a, the liquid can enter the sample separating cavity 103 and be conveyed into the sample separating channel 107;

Wherein the delivery component is capable of drawing liquid from the canister 108 into the diversion chamber 102 when the filtration component is performing a job;

Wherein, each time the filter frame 110 moves downward by a preset distance b, the positioning table 111 can rotate by a preset angle to make the other sample separating test tube 113 correspond to the sample separating channel 107, and the preset distance b is shorter than the preset distance a;

through setting up branch appearance jar 100, when using, the operator can put in branch appearance jar 100 with the water sample that needs to detect that takes out from the river course, stores by the filter chamber 104 that sets up, waits for pretreatment. The filter pot 108 matched with the sample pot 100 is buckled on the sample pot 100, and the filter frame 110 and the filter opening 109 on the filter pot 108 reach the filter cavity 104. Specifically, under the action of the filter element, gas is intermittently delivered into the filter cavity 104, so that positive pressure is formed to push liquid into the filter tank 108 through the filter port 109, and meanwhile, the delivery element forms negative pressure to the interior of the filter tank 108 to deliver the liquid into the shunt cavity 102. The positive pressure effect can effectively reduce the resistance of liquid when leading to the filter 109 for filtration rate, avoid the velocity of flow inequality because of gravity effect leads to, and the negative pressure effect then can further guide the liquid flow, and such setting can form positive negative pressure combined action at liquid filtration in-process, improves filtration efficiency and ensures going on smoothly of different filtration stages. After the liquid is conveyed into the diversion cavity 102 by the conveying component, part of the liquid can flow out of the liquid discharge pipe 106, so that the situation of unbalanced pressure caused by excessive liquid can be avoided. When the filter element delivers a predetermined amount of gas to the filter chamber 104, it means that a sufficient amount of liquid is passed through the first screen (the screen with the largest pore size) into the canister 108 and is delivered into the diverter chamber 102. at this time, the filter frame 110 can be moved downward by a preset position, so that the second section of filter screen (the aperture is slightly smaller than that of the first section of filter screen) will move downward by a preset distance b along with the filter frame 110. In this process, the positioning table 111 can rotate to make the multiple sample separating tubes 113 alternately positioned, so that another sample separating tube 113 corresponds to the sample separating channel 107. And the liquid in the diversion cavity 102 can flow into the sample diversion cavity 103 and be conveyed into the sample diversion channel 107, and the liquid filtered by the first section of filter screen can be released into one of the sample diversion test tubes 113. The purpose of the fluid discharge port communicating with the flow dividing chamber 102 is that, since the conveying member is continuously operated, the volume of the sample dividing tube 113 cannot accommodate the liquid continuously conveyed by the conveying member, and therefore, a part of the liquid after the liquid in the flow dividing chamber 102 enters the sample dividing chamber 103 and fills the sample dividing chamber 103 flows out from the fluid discharge port. In addition, after the sample separating cavity 103 is filled with the liquid filtered by the first section of filter screen, the sample separating cavity 103 is closed, and even if the filter frame 110 moves, when the liquid with different filtering grades is also conveyed to the flow dividing cavity 102, the liquid in the part also flows out from the liquid outlet, so that the liquid in the sample separating test tube 113 is ensured not to be interfered by the subsequent filtered liquid, and the independence and the accuracy of water samples with different filtering grades are ensured. When the filter frame 110 continues to move downwards to a preset distance a, the second section of filter screen corresponds to the filter opening 109, the filter component conveys gas to the filter cavity 104 again, and the water sample is pushed to enter the filter tank 108 through the second section of filter screen and enters the diversion cavity 102 under the action of the conveying component. At this time, the positioning table 111 rotates to make another empty sample separating test tube 113 correspond to the sample separating channel 107, so as to ensure that water samples with different filtering grades are respectively stored in different test tubes. With further downward movement of the filter frame 110, the third section of filter screen (with smaller pore size than the second section of filter screen) is aligned with the filter port 109 gradually, and the same filtering, conveying and sample separation processes are continued. After each filtering stage is completed, the sample separating cavity 103 is automatically closed, so that newly entered liquid is prevented from being mixed into stored water samples, and redundant liquid still flows out through a liquid outlet, so that the pressure balance of the system is maintained. This multi-stage filtration and sample separation process continues until all the screens complete the filtration in sequence, with each sample separation tube 113 storing a water sample of the corresponding filtration grade. The design of the device can efficiently complete multistage filtration and synchronous sample separation in the same equipment, improves the automation degree of water quality detection pretreatment, and avoids the problems of errors and pollution caused by manual replacement of a filter screen and a sample separation container in the traditional method. Through accurate control filter stand 110 removal, gas delivery and liquid flow direction, not only can reduce water sample cross contamination, can also ensure the purity of filtering liquid at all levels, provide more accurate water sample data for follow-up detection, improve reliability and the comprehensiveness of quality of water aassessment. Further, set up filter stand 110 and filter screen on canister 108 to let canister 108 and branch appearance jar 100 set up to detachable and be connected, make canister 108 can conveniently dismantle after accomplishing filtering and dividing the appearance, the operating personnel of being convenient for change the filter screen, clear up the inside remaining impurity of canister 108, improve the maintenance convenience of device. In addition, detachable design makes different filter screen combinations can be changed in a flexible way according to the detection demand, for example changes the filter screen in different apertures to adapt to the detection demand of different quality of water environment, improve the application scope of device. Compared with the prior art that the water quality detection pretreatment filtering device can only perform single-degree filtering, the application can simultaneously extract liquid with different filtering degrees by arranging the multi-stage filter screen and the adjustable filter frame 110. This arrangement allows the device to filter water samples of varying thickness, thereby allowing comprehensive analysis of suspended and dissolved contaminants in the water.

As a further scheme of the invention, the filtering component comprises a push plate 200 arranged in the air inlet cavity 105, the push plate 200 is in sliding connection with the air inlet cavity 105, a plurality of air inlets a201 communicated with the outside are formed in the inner wall of the air inlet cavity 105, the height of each air inlet a201 is higher than that of the push plate 200, an air inlet b202 communicated with the air inlet cavity 105 is formed in the bottom of the filtering cavity 104, a piston 203 is in sliding connection with the air inlet b202, and a spring a204 is connected between the piston 203 and the air inlet b 202;

By providing the piston 203, the piston 203 closes the intake port b202 in the initial state, and the spring a204 can restrict the position of the piston 203 so that the piston 203 always closes the intake port b202. Specifically, the position of the push plate 200 may be moved upwards, the push plate 200 gradually moves upwards to cover the air inlet a201, so that positive pressure may be generated in the air inlet cavity 105, the positive pressure may force the air to push the piston 203 to compress the spring a204, the air inlet b202 may be opened, the air may enter the filter cavity 104 through the air inlet b202, when the push plate 200 begins to reset downwards, the positive pressure in the air inlet cavity 105 gradually decreases, and the pushing action of the air is weakened. At this time, the restoring force of the spring a204 starts to act, pushing the piston 203 downward, gradually closing the intake port b202. When the piston 203 completely closes the gas inlet b202, the flow of gas is cut off, and the system returns to the initial state and is ready for the next gas delivery. The cooperation of the push plate 200 and the piston 203 ensures precise control of gas input, so that each gas delivery can be performed according to a predetermined pressure and amount, and after the push plate 200 reciprocates up and down for a preset number of times, a preset amount of gas can be accurately delivered into the filter chamber 104, and the movement of the subsequent filter frame 110 can be matched.

As a further scheme of the invention, the filtering component further comprises a motor 205 connected in the air inlet cavity 105, a screw a206 is connected to a rotating shaft of the motor 205, the screw a206 is a reciprocating screw, and the push plate 200 is in threaded connection with the screw a 206;

By providing the motor 205 to drive the lead screw a206, accurate reciprocation of the push plate 200 is achieved. The motor 205 rotates the screw a206 through the driving shaft 305, thereby reciprocating the push plate 200 along a predetermined track under the guide of the screw a 206. The reciprocating motion of the lead screw a206 can precisely control the up-and-down movement of the push plate 200, so that the amount of gas input each time meets the preset requirement. This configuration makes the movement of the push plate 200 more stable and controllable, and enables accurate control of the push plate 200 by driving of the motor 205, avoiding unstable factors due to mechanical errors or manual adjustment. The threaded connection of the push plate 200 and the lead screw a206 can ensure the stability of the push plate 200 in the running process. In addition, by injecting gas into the filter cavity 104, not only can positive pressure be applied to the filter cavity 104 to increase the efficiency of liquid passing through the filter screen, but also the liquid to be treated in the filter cavity 104 can be disturbed, and the liquid which may cause precipitation can be disturbed. So that each particle can be effectively filtered when the liquid passes through the filter screens with different pore diameters. This ensures that each stage of filtration is performed efficiently and that the effectiveness of the staged filtration is not compromised by particle deposition or agglomeration.

As a further scheme of the invention, the filter component further comprises a connecting shaft 207 rotatably connected to the bottom of the filter cavity 104, the connecting shaft 207 passes through the filter cavity 104 and the push plate 200 to extend to the bottom of the push plate 200, a guide pipe 208 is connected to the connecting shaft 207, a guide groove 209 is formed in the outer wall of the guide pipe 208, a guide rod 210 slidably connected with the guide groove 209 is connected to the bottom of the push plate 200, a gear a211 is arranged at the top of the connecting shaft 207, a ratchet mechanism 212 is arranged between the gear a211 and the connecting shaft 207, a lead screw b213 is rotatably connected to the filter cavity 104, the lead screw b213 is a reciprocating lead screw, a gear b214 meshed with the gear a211 is connected to the lead screw b213, a push rod 215 is connected to the lead screw b213 in a threaded manner, one end of the push rod 215 is a magnet 216 magnetically attracted with the filter frame 110, and the gear a is an incomplete gear 211;

Through setting up guide arm 210, can drive guide arm 210 rectilinear movement when push pedal 200 moves upwards, guide arm 210 cooperates with guide slot 209, pipe 208 can produce the rotation of certain range when guide arm 210 moves upwards, connecting axle 207 can produce the rotation and then can let gear a211 produce the rotation through ratchet, when guide arm 210 moves down along with push pedal 200, can produce reset rotation through the cooperation with guide slot 209 with pipe 208 and connecting axle 207, ratchet 212 plays unidirectional rotation's effect at this moment, can let connecting axle 207 idle at the inner wall of gear a211, that is, push pedal 200 upwards and down move only can let gear a211 rotate the preset angle when round trip. The gear a211 is an incomplete gear, when the push plate 200 reciprocates up and down for a preset number of times, the gear a211 and the gear b214 are meshed to enable the screw b213 to rotate, so that the push rod 215 can enable the filter frame 110 to move downwards for a preset distance through the attraction force of the magnetic attraction of the push rod 215 and the filter frame 110, a filter screen with another aperture corresponds to the position of the filter port 109, and smooth multi-stage filtration is ensured. After the filter frame 110 moves downwards to the limit position after the push rod 215 moves downwards, the filter screen with the smallest aperture corresponds to the filter port 109, the motor 205 continuously works, and the push rod 215 moves upwards to the initial position through the continuous up-and-down reciprocating movement of the push plate 200 and the characteristic that the lead screw b213 is a reciprocating lead screw, so that the next step filtration of sample liquid is facilitated.

As a further scheme of the invention, the conveying component comprises an extraction cavity 300 arranged in the filter tank 108, a plurality of shunt ports 301 communicated with the shunt cavity 102 are arranged on the outer wall of the extraction cavity 300, a volute 302 is arranged in the extraction cavity 300, an extraction pipe 303 extending to one side of the filter port 109 is communicated with the bottom of the volute 302, and an impeller 304 is arranged in the volute 302;

By providing the impeller 304, when in use, the impeller 304 is rotatable, and rotation of the impeller 304 within the volute 302 creates a negative pressure within the volute 302, which can cause liquid within the canister 108 to be drawn in and through the extraction tube 303, ensuring that the filtered liquid can be removed in time. The volute 302 design helps to efficiently direct the flow of liquid to the extraction tube 303 while ensuring that the flow of liquid during filtration is stable, avoiding uneven flow rates due to liquid backlog or excessive drag, thereby improving the efficiency and accuracy of the overall filtration system.

As a further solution of the present invention, the conveying component further includes a driving shaft 305 connected to the impeller 304, the bottom of the driving shaft 305 extends to the bottom of the canister 108 and is connected to a connecting piece a306, the top of the lead screw a206 extends into the filter cavity 104 and is connected to a connecting piece b307, the portion of the lead screw a206 extending into the filter cavity 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 limit chute 309, and one end of the spring telescopic rod 308 extends into the limit chute 309;

By providing the connecting piece a306, after the filter tank 108 is inserted into the filter cavity 104 and fixed with the sample separating tank 100, the connecting piece a306 is positioned at the top of the connecting piece b307, and the provided spring telescopic rod 308 can be inserted into the limiting chute 309. When the subsequent motor 205 works to enable the lead screw a206 to rotate, while the push plate 200 reciprocates up and down to inject air into the filter cavity 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 is matched with the limiting chute 309, the spring telescopic rod 308 can drive the connecting piece b307 and the driving shaft 305 to rotate when sliding to the end part of the limiting chute 309, and further, the impeller 304 can be enabled to rotate in the process of moving the push plate 200 up and down, so that in the filtering execution process, the rotation of the impeller 304 can help to extract liquid and push the liquid to flow to the diversion cavity 102. This linkage design also effectively balances the pressure and flow of the system. When the push plate 200 creates positive pressure to push liquid through the screen, the rotation of the impeller 304 helps to draw the liquid, avoiding excessive pressure build-up within the canister 108, while effectively controlling the flow and storage of the liquid. Thus, the damage of equipment can be prevented, and the stability of the system can be improved. In addition, the spring telescoping rod 308 cannot accurately mate with the limit chute 309 because of the possible angular uncertainty of the connecting tab a306 at the bottom of the canister 108 during insertion. To address this problem, the telescoping nature of the spring telescoping rod 308 may be utilized. Even if the spring telescoping rod 308 is not fully abutted with the limit chute 309 in the initial state, when the connecting piece a306 is inserted, the compression action of the connecting piece a306 on the spring telescoping rod 308 can shrink and store a certain potential energy. Along with the rotation of the screw a206, the up-and-down reciprocating motion of the push plate 200 drives the connecting piece b307 to rotate, so that the spring telescopic rod 308 is gradually in butt joint with the limiting chute 309 in the rotation process. Finally, the spring telescoping rod 308 is snapped into the limit chute 309, ensuring accurate fit between the components, avoiding the effects of angular uncertainty.

As a further scheme of the invention, a plurality of liquid inlets 400 communicated with the sample separating cavity 103 are formed in the bottom of the sample separating cavity 102, a push ring 401 is connected in a sliding manner in the sample separating cavity 103, a connecting rod a402 is connected to the top of the push ring 401, a connecting rod b403 is connected in a sliding manner in the connecting rod a402, a baffle plate 404 for sealing the liquid inlets 400 is connected to the top of the connecting rod b403, a baffle plate 405 positioned at the bottom of the baffle plate 404 is connected to the inner wall of the sample separating cavity 103, a space is reserved between the baffle plate 405 and the baffle plate 404, wedge-shaped strips 407 matched with the wedge-shaped openings 406 are formed in two sides of the inner part of the connecting rod a402 respectively, a spring b408 is connected between the wedge-shaped strips 407 and the connecting rod b403, a connecting frame 409 is connected to the bottom of the push ring 401, the top of the screw b213 extends into the sample separating cavity 103 and is connected with a screw c410, and the screw c410 is a reciprocating screw;

By arranging the spring b408, the spring b408 can enable the wedge-shaped strip 407 to squeeze the wedge-shaped opening 406 by utilizing potential energy of the spring b408, a certain friction force is formed between the wedge-shaped strip 407 and the wedge-shaped opening 406, the position of the baffle 404 can be supported, the baffle 404 seals the liquid inlet 400, when the impeller 304 rotates to convey liquid into the extraction cavity 300, the liquid flows into the diversion cavity 102 through the diversion opening 301, the liquid inlet 400 is in a sealed state, and part of liquid extracted from the first section flows out from the liquid outlet. When the screw b213 rotates to enable the push rod 215 to drive the filter frame 110 to move downwards, the screw c410 follows the screw b213 to rotate to enable the connecting frame 409 to drive the push ring 401 to move downwards. In this process, by using the different lengths and pitches of the screw b213 and the screw c410, when the filter frame 110 drives the first section of filter screen to not completely leave the filter port 109, the push ring 401 moves downward, and the baffle 404 moves to open the liquid inlet 400 through the cooperation of the wedge-shaped strips 407 and the wedge-shaped ports 406, so that the liquid filtered by the first section of filter screen can reach the sample separating cavity 103. When the filter frame 110 moves downwards to enable the second section of filter screen to reach the filter port 109 but does not stop moving, the filter frame 110 moves to the limit position on the screw rod c410 to start to reset upwards, and the baffle 404 can timely seal the liquid inlet 400 so as to prevent liquid in different filter sections from entering the sample separating cavity 103. Through the design, the cooperation between the baffle 404 and the liquid inlet 400 can ensure that the liquid in the sample separating cavity 103 is only split according to the need in the moving process of the filter frame 110, and avoid the cross mixing of the liquid in different filter segments. Further, after the liquid inlet 400 is closed by the baffle 404 when the push ring 401 moves upwards, the movement of the push ring 401 can push the liquid in the sample separating cavity 103, so that the liquid can flow into the sample separating test tube 113 through the flow dividing channel, and the flow path of the liquid can be effectively guided by precisely controlling the push ring 401, so that the processing process of the liquid in the sample separating cavity 103 is high-efficiency and precise. In addition, the connecting rod a402 and the connecting rod b403 are arranged between the push ring 401 and the baffle 404, so that the liquid inlet 400 can be opened timely when the push ring 401 moves downwards, and the liquid inlet 400 can be closed timely when the push ring 401 moves upwards. Specifically, the spring b408 provides enough force to enable the wedge-shaped strip 407 to press the wedge-shaped opening 406 to form a certain friction force, and when the push ring 401 moves downwards, the baffle 404 can be effectively pushed to move downwards by the linkage action of the connecting rod a402 and the connecting rod b403, so that the liquid inlet 400 is opened. when the baffle plate 404 reaches the position of the baffle plate 405, due to the blocking of the baffle plate 404, when the push ring 401 continues to move downwards, the movement force of the push ring 401 overcomes the potential energy of the spring b408 and the friction force between the wedge-shaped opening 406 and the wedge-shaped strip 407, so that the spring b408 is compressed, the wedge-shaped strip 407 is separated from the wedge-shaped opening 406, the follow-up fit between the push ring 401 and the baffle plate 404 is released, when the push ring 401 starts to move upwards, the friction force acts again, and the contact friction between the wedge-shaped strip 407 and the wedge-shaped opening 406 can enable the push ring 401 and the baffle plate 404 to move synchronously, so that the liquid inlet 400 is ensured to be closed timely when needed. The whole process utilizes the elasticity of the spring b408 and the friction force between the wedge-shaped strip 407 and the wedge-shaped opening 406, so that the rapid opening and closing and stable control of the liquid inlet 400 are ensured. The design aims to ensure that the liquid can be effectively split and quantified in different treatment stages, avoid unnecessary leakage or mixing and improve the accuracy and reliability of sample splitting.

As a further scheme of the invention, the positioning component comprises a connecting port 500 which is arranged on the positioning table 111, the connecting port 500 is communicated with the positioning port 112, a positioning block 501 is connected in a sliding way in the connecting port 500, a connecting plate 502 is connected in a sliding way in the connecting port 500, a top contact bar 503 is connected at the top of the connecting plate 502, springs c504 are arranged 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 at one side of the connecting plate 502, a connecting rod b506 is connected on the sample distributing tank 100 in a sliding way, a spring d507 is connected between the connecting rod b506 and the sample distributing tank 100, a compression ring 508 is connected at the top of the connecting rod a505, and a ball 509 in contact with the compression ring 508 is connected at the bottom of the connecting rod b 506;

Through setting up connecting rod b506, when canister 108 lock is on branch appearance jar 100, the top cap of canister 108 can oppress connecting rod b506, accessible connecting rod b506 and ball 509 downwardly moving clamping ring 508 and connecting rod a505, connecting rod a505 can drive connecting plate 502 and top contact strip 503 downwardly moving when moving, the position of locating piece 501 can be extruded when top contact strip 503 moves, can let locating piece 501 slide along connector 500 and be close to the branch appearance test tube 113 and remove, in locating piece 501 moving process, can finally touch branch appearance test tube 113, and extrude branch appearance test tube 113 fixedly, thereby ensure the stability and the accuracy of branch appearance test tube 113 in whole operation process. The purpose of setting like this is through the linkage of connecting rod b506, ball 509, connecting rod a505 etc. subassembly, ensures that the combination of canister 108 and branch appearance jar 100 can effectively promote locating piece 501 to accomplish accurate location and fixed work to improve the fixed effect of branch appearance test tube 113, ensure the accuracy and the uniformity of branch appearance operation.

As a further scheme of the invention, a connecting ring 114 is connected to the top cover of the filter tank 108, and the connecting ring 114 is in threaded connection with the sample separating tank 100;

By providing the connection ring 114 in threaded connection with the sample separation tank 100, the removable connection of the top cover of the canister 108 to the sample separation tank 100 can be achieved. This configuration allows canister 108 to be easily removed when replacement or cleaning is required, without the need for complex tools or operations. Meanwhile, the threaded connection can ensure tight connection and prevent the problem of loosening or leakage in the use process. The detachable connection has the advantage that firstly, convenient maintenance and replacement operations can be provided, and secondly, the threaded connection has stronger stability, so that the tightness and the firmness between the filter canister 108 and the sample separation canister 100 in the operation process can be effectively ensured.

As a further scheme of the invention, the bottom of the positioning table 111 is connected with a gear c510, the sample separation tank 100 is rotatably connected with a transmission shaft 511, one end of the screw b213 extends below the push plate 200, a chain 513 is connected between the screw b213 and the transmission shaft 511, the transmission shaft 511 is connected with a gear d512 adapted to the gear c510, and the gear d512 is an incomplete gear;

By setting the cooperation of the gear c510 and the gear d512, it can be ensured that the positioning table 111 can rotate by a preset angle when the filter frame 110 moves downwards by a preset distance b (i.e. the filter frame 110 moves and does not cooperate the next section of filter screen with the filter port 109, and the push ring 401 moves downwards to the limit position to start to reset upwards), so that the other sample separating tube 113 is accurately abutted to the sample separating channel 107. Specifically, the cooperation between the gear c510 and the gear d512 drives the positioning table 111 to rotate through the transmission shaft 511, so that the positioning table 111 automatically adjusts the angle each time the filter frame 110 moves downwards and reaches the preset distance b, and accurately positions the next sample separating tube 113 to the corresponding sample separating channel 107. This arrangement has a close correlation with the movement of the filter frame 110. The downward movement of the filter frame 110 drives the screw b213 and the transmission shaft 511 to rotate, so that the positioning table 111 rotates in a manner of transmission between the chain 513 and the gear. The design of the linkage mechanism ensures that when the filter frame 110 moves to a set position, the positioning table 111 can automatically adjust the butt joint angle of the sample separating test tubes 113 according to the position of the filter frame 110 so as to be ready for the next sample separating process in time. By the incomplete gear arrangement, the engagement of gear d512 with gear c510 ensures that during the downward movement of the filter frame 110, the positioning table 111 can be rotated by a preset angle, thereby correctly aligning the next cuvette 113 to the cuvette channel 107. The special structural design of the incomplete gear enables the gear d512 and the gear c510 to complete downward movement on the filter frame 110, and enables the next section of filter screen to be automatically separated from the filter port 109 after complete butt joint, so as to prevent excessive rotation and avoid the continuous rotation of the positioning table 111. The key to this design is precise motion control, ensuring that rotation of the positioning table 111 occurs only at certain stages of the filter frame 110, avoiding positioning errors or unnecessary operations due to excessive rotation. The disengaging mechanism of the gear d512 and the gear c510 can effectively prevent excessive rotation, keep the stability and the reliability of the system, and ensure that the sample separation test tube 113 can smoothly distribute liquid after the filter screen is in butt joint with the filter port 109.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A water quality testing device for environmental protection, includes divides appearance jar (100), be equipped with a plurality of baffles (101), its characterized in that in dividing appearance jar (100):

The separation plate (101) separates the sample separating tank (100) into a flow dividing cavity (102), a sample dividing cavity (103), a filter cavity (104) and an air inlet cavity (105), a liquid discharge pipe (106) is communicated with the flow dividing cavity (102), and a sample separating channel (107) is communicated with the sample dividing cavity (103);

the filter tank (108) is arranged on the sample separating tank (100), the filter tank (108) is detachably connected with the sample separating tank (100), a plurality of filter openings (109) are formed in the filter tank (108), a filter frame (110) is arranged 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 filter screens are gradually reduced from bottom to top;

the positioning table (111) is arranged on the outer wall of the sample separating tank (100), a plurality of positioning ports (112) are formed in the positioning table (111), sample separating test tubes (113) are arranged in the positioning ports (112), and one of the sample separating test tubes (113) corresponds to the sample separating channel (107);

A filter element is arranged between the sample separating tank (100) and the filter tank (108) and is used for forming positive pressure for conveying gas to the filter cavity (104) so as to force liquid to enter the filter tank (108) through a filter port (109);

A delivery member disposed between the canister (108) and the filter chamber (104) for creating a negative pressure within the canister (108) to deliver liquid into the shunt chamber (102);

A positioning component arranged on the positioning table (111) and used for positioning the sample separating test tube (113) in the positioning port (112) when the filter tank (108) is buckled on the sample separating tank (100);

The filter component comprises a push plate (200) arranged in the air inlet cavity (105), the push plate (200) is in sliding connection with the air inlet cavity (105), a plurality of air inlets a (201) communicated with the outside are formed in the inner wall of the air inlet cavity (105), the height of each air inlet a (201) is higher than that of the push plate (200), an air inlet b (202) communicated with the air inlet cavity (105) is formed in the bottom of the filter cavity (104), a piston (203) is connected in the air inlet b (202) in a sliding mode, and a spring a (204) is connected between the piston (203) and the air inlet b (202).

2. The water quality detection device for environmental protection according to claim 1, wherein the filtering component further comprises a motor (205) connected to the air inlet cavity (105), a screw a (206) is arranged on a rotating shaft of the motor (205), the screw a (206) is a reciprocating screw, and the push plate (200) is in threaded connection with the screw a (206).

3. A water quality testing device for environmental protection according to claim 1, characterized in that said filtering means are able to move down said filter frame (110) a preset distance each time after delivering a preset amount of gas, so that a filter screen of another aperture corresponds to said filter mouth (109);

the filter component further comprises a connecting shaft (207) which is rotationally connected to the bottom of the filter cavity (104), the connecting shaft (207) penetrates through the filter cavity (104) and the push plate (200) to extend to the bottom of the push plate (200), a guide pipe (208) is connected to the connecting shaft (207), a guide groove (209) is formed in the outer wall of the guide pipe (208), a guide rod (210) which is slidably connected with the guide groove (209) is connected to the bottom of the push plate (200), a gear a (211) is arranged at the top of the connecting shaft (207), a ratchet mechanism (212) is arranged between the gear a (211) and the connecting shaft (207), a lead screw b (213) is connected to the filter cavity in a rotating mode, the lead screw b (213) is a reciprocating lead screw, a gear b (214) meshed with the gear a (211) is connected to the lead screw b (213) in a threaded mode, one end of the push rod (215) is a magnet (216), and the gear a magnetic filter frame (110) is not completely absorbed by the gear a (211).

4. The water quality detection device for environmental protection according to claim 2, wherein the conveying component comprises an extraction cavity (300) arranged in the filter tank (108), a plurality of shunt ports (301) communicated with the shunt cavity (102) are formed in the outer wall of the extraction cavity (300), a volute (302) is arranged in the extraction cavity (300), an extraction pipe (303) extending to one side of the filter port (109) is communicated with the bottom of the volute (302), and an impeller (304) is arranged in the volute (302).

5. A water quality testing device for environmental protection according to claim 4, wherein said delivery means is capable of drawing liquid from said canister (108) into said diversion chamber (102) when said filtering means is performing work;

the conveying component further comprises 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 with a connecting sheet a (306), the top of the screw rod a (206) extends into the filter cavity (104) and is connected with a connecting sheet b (307), the part of the screw rod a (206) extending into the filter cavity (104) is a part without threads, the top of the connecting sheet b (307) is connected with a spring telescopic rod (308), a limiting chute (309) is formed in the bottom of the connecting sheet a (306), and one end of the spring telescopic rod (308) extends into the limiting chute (309).

6. A water quality testing device for environmental protection according to claim 3, characterized in that, each time the filter frame (110) moves down by a preset distance a, liquid can enter the sample separation chamber (103) and be transported into the sample separation channel (107);

the utility model provides a lead screw, including branch appearance chamber (102), branch appearance chamber (103), divide the bottom of appearance chamber (102) to set up a plurality of with liquid inlet (400) that divide appearance chamber (103) to communicate, divide interior both sides of appearance chamber (103) to slide and be connected with push ring (401), the top of push ring (401) is connected with connecting rod a (402), interior sliding connection of connecting rod a (402) has connecting rod b (403), the top of connecting rod b (403) is connected with baffle (404) that are used for sealing liquid inlet (400), the inner wall of minute appearance chamber (103) is connected with baffle (405) that are located baffle (404) bottom, baffle (405) with have the interval between baffle (404), wedge mouth (406) have been seted up respectively to the inside both sides of connecting rod a (402), sliding connection have with wedge strip (407) of wedge mouth (406) adaptation on connecting rod b (403), be connected with spring b (403) between connecting rod b (403), the bottom of push ring (401) is connected with link (409), divide appearance chamber (103) to extend to lead screw (410) in the lead screw (410).

7. The water quality detection device for environmental protection according to claim 1, wherein the positioning component comprises a connecting port (500) arranged on the positioning table (111), the connecting port (500) is communicated with the positioning port (112), a positioning block (501) is connected in a sliding manner in the connecting port (500), a connecting plate (502) is connected in the sliding manner in the connecting port (500), a top contact strip (503) is connected at the top of the connecting plate (502) and is positioned at one side of the positioning block (501), a spring c (504) is arranged between the positioning block (501) and the connecting port (500) and between the connecting plate (502) and the connecting port (500), a connecting rod a (505) is connected at one side of the connecting plate (502), a connecting rod b (506) is connected with the sample separation tank (100) in a sliding manner, a spring d (507) is connected at the top of the connecting rod a (505), and a ball compression ring (509) is connected at the bottom of the connecting rod b (506).

8. The water quality detection device for environmental protection of claim 1, wherein a connecting ring (114) is connected to the top cover of the canister (108), and the connecting ring (114) is in threaded connection with the sample separating tank (100).

9. A water quality testing device for environmental protection according to claim 3, characterized in that, each time the filter frame (110) moves downwards by a preset distance b, the positioning table (111) can rotate by a preset angle, letting the other sample separating test tube (113) correspond to the sample separating channel (107), the preset distance b is shorter than the preset distance a;

The bottom of locating bench (111) is connected with gear c (510), rotate on branch appearance jar (100) and be connected with transmission shaft (511), the one end of lead screw b (213) extends to the below of push pedal (200), and with be connected with chain (513) between transmission shaft (511), be connected with on transmission shaft (511) with gear d (512) of gear c (510) adaptation, gear d (512) are incomplete gear.