High-turbidity water sample pretreatment device and method

Abstract

The invention relates to the technical field of water treatment, in particular to a high-turbidity water sample pretreatment device and method.The high-turbidity water sample pretreatment device comprises a mounting mechanism, a water inlet mechanism and a water outlet mechanism, the lifting mechanism is arranged on the mounting mechanism; the filter cup is mounted at the output end of the lifting mechanism and is used for accommodating the water sample before filtration, and the working height is adjusted through the lifting mechanism; the liquid adding peristaltic pump is arranged at the liquid inlet of the filter cup and is used for pumping an external water sample into the filter cup; the sand core funnel is arranged on the mounting mechanism, the sand core funnel is located below the filter cup, and a drainage pipeline is arranged at a liquid outlet of the sand core funnel; the filter membrane is located in the middle position of the filter cup and the sand core funnel, the filter membrane is arranged on the winding mechanism, and the filter membrane is wound and replaced through the winding mechanism; the vacuumizing peristaltic pump is mounted at the water outlet end of the drainage pipeline and is used for generating negative pressure in the sand core funnel and pumping out liquid; the pretreatment process of the high-turbidity water sample is simplified, and the treatment efficiency and the water quality purification effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a high turbidity water sample pretreatment device and method. Background Art

[0002] In the existing water treatment technology field, especially in the pretreatment of high turbidity water samples, a variety of technologies and devices have been developed and applied. For example, the "High Turbidity Water Treatment Device" with patent number 00225304.6 published by China Patent, the device realizes the treatment of turbid water through a series of treatment units, including water pumps, sedimentation tanks, reaction tanks, resin softening devices, activated carbon adsorption devices, filtration devices, multi-stage clean water storage tanks, Ro reverse osmosis membrane treatment devices and disinfection devices, etc., so as to convert turbid water into drinking water for life. This device has a compact design, small footprint, is easy to move and use, and is particularly suitable for some remote areas or temporary water treatment needs.

[0003] However, although the device has solved the problem of high turbidity water treatment to a certain extent, there are still some significant defects. First, during the mixing process of the coagulant and high turbidity water, the device has poor sedimentation effect due to the unsatisfactory mixing effect of the rotator, which directly affects the subsequent treatment process and the final water quality. Secondly, the high turbidity water lacks sufficient filtration treatment before entering the activated carbon adsorption device, resin softening device and Ro reverse osmosis membrane device, which not only increases the use cost of these devices, but also reduces the treatment effect of turbid water. In addition, the ozone disinfector is set after the third-level clean water storage tank. Since ozone is difficult to play an effective role, the treated water may still have an odor. Summary of the invention

[0004] The present invention provides a high turbidity water sample pretreatment device and method, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A high turbidity water sample pretreatment device, comprising:

[0007] Installation mechanism, independent fixed setting;

[0008] A lifting mechanism is arranged on the mounting mechanism;

[0009] The filter cup is installed at the output end of the lifting mechanism, and is used to hold the water sample before filtration, and the working height is adjusted by the lifting mechanism;

[0010] A liquid adding peristaltic pump is arranged at the liquid inlet of the filter cup and is used to draw external water samples into the filter cup;

[0011] The sand core funnel is arranged on the mounting mechanism, and the sand core funnel is located below the filter cup, and a drainage pipe is arranged at the liquid outlet of the sand core funnel;

[0012] The filter membrane is located in the middle of the filter cup and the sand core funnel. The filter membrane is arranged on a winding mechanism, and the filter membrane is wound up and replaced by the winding mechanism.

[0013] The vacuum peristaltic pump is installed at the outlet end of the drainage pipe to generate negative pressure in the sand core funnel to extract the liquid.

[0014] Furthermore, the winding mechanism comprises:

[0015] A film discharging wheel is rotatably arranged on the mounting mechanism, and the filter membrane is wound on the film discharging wheel;

[0016] Servo motor, the output end of which is installed on the film discharging wheel, is used to control the retraction and extension of the filter membrane;

[0017] The film collecting wheel is rotatably mounted on the mounting mechanism, and the film collecting wheel and the film discharging wheel are respectively located at two ends of the filter cup and are used for collecting old filter membranes.

[0018] Furthermore, the filter membrane used is 0.45 μm.

[0019] Furthermore, silicone pads are respectively arranged at the connection between the lower part of the filter cup and the upper part of the sand core funnel, and the silicone pads are clamped together to seal the connection between the filter cup and the sand core funnel.

[0020] Furthermore, a vent hole is provided at the top of the filter cup to always maintain atmospheric pressure in the filter cup.

[0021] Furthermore, the lifting mechanism comprises:

[0022] A mounting seat, arranged on the mounting mechanism;

[0023] The transmission shaft is rotatably mounted on the mounting seat, and the transmission shaft is arranged in the inner cavity of the transmission shaft, and the transmission shaft rotates synchronously with the transmission shaft, and the transmission shaft is slidably mounted along the length direction of the transmission shaft, and a limit column is arranged at one end of the transmission shaft, and the limit column is located in the long slot hole of the transmission shaft;

[0024] The lead screw is coaxially mounted on the conducting shaft;

[0025] The guide tube is arranged on the mounting seat, the inner cavity of the guide tube is provided with a mounting column, and the mounting column is slidably installed along the length direction of the guide tube, the mounting column is arranged parallel to the moving track of the conduction shaft, the lead screw is installed in cooperation with the internal thread of the mounting column, and the filter cup is installed on the mounting column;

[0026] A spring, one end of which is mounted on the lead screw and the other end of which is mounted on the transmission shaft;

[0027] The driving mechanism is arranged on the mounting seat and is used for providing rotational force to the transmission shaft.

[0028] Furthermore, the driving mechanism comprises:

[0029] The power shaft is rotatably mounted on the mounting seat, and the power shaft is arranged parallel to the rotation axis of the transmission shaft;

[0030] Two transmission gears are coaxially mounted on the transmission shaft and the power shaft respectively, and the two transmission gears are meshedly mounted;

[0031] The driving motor is installed on the mounting seat, and the output end of the driving motor is installed on the power shaft.

[0032] Further, the installation mechanism comprises:

[0033] The box body has a cavity inside and a slot connected to the box body is arranged on one side of the box body, and the liquid-adding peristaltic pump and the vacuum peristaltic pump are both located outside the box body;

[0034] Two guide members are symmetrically arranged on the two side walls of the box cavity and located at the notch. The guide members are provided with a straight guide groove and an arc guide groove, and the straight guide groove and the arc guide groove are connected.

[0035] The support shaft is slidably arranged in the straight grooves of the two guide members, and positioning grooves with the axis as the starting point are respectively arranged at both ends of the support shaft;

[0036] Two fixing members are symmetrically arranged on the supporting shaft, and guide columns are arranged on the fixing members, and the guide columns are respectively slidably installed with the guide straight groove and the guide arc groove of the guide member;

[0037] A sealing cover is arranged on the two fixing members, and is used to seal the notch of the box body. A positioning pin is arranged on the sealing cover, and the positioning pin is plug-in-pull connected with the positioning hole of the box body;

[0038] Two guide rods are coaxially arranged at the two ends of the box cavity, and the guide rods are slidably connected with the support shaft positioning grooves, and the support shaft rotation axis is coaxially arranged with the guide rods;

[0039] The power mechanism is arranged on the box body, and is used for providing displacement and turning power to the supporting shaft.

[0040] Furthermore, the power mechanism comprises:

[0041] The power motor is arranged on the box body, and a worm is coaxially arranged at the output end of the power motor;

[0042] The worm wheel is coaxially arranged on the supporting shaft, and the worm is meshingly connected with the worm wheel.

[0043] A high turbidity water sample pretreatment method, the steps comprising:

[0044] S1, the control element issues a pre-processing instruction, the lifting mechanism starts to press down, and the filter cup fixedly connected to it presses down to press the filter membrane tightly between the filter cup and the sand core funnel;

[0045] S2, the water sample is added into the filter cup from the liquid adding peristaltic pump, and the vacuum peristaltic pump installed at the bottom of the sand core funnel connecting the pipe is started to generate negative pressure;

[0046] S3, the filter cup is connected to the atmosphere and always maintains atmospheric pressure. The negative pressure generated in the sand core funnel will cause the water sample to be pressed by the atmospheric pressure from the filter cup to the filter membrane and then to the sand core funnel, thus completing the filtration process;

[0047] S4: Too much sediment has accumulated on the filter membrane and its service life has expired, so the filter membrane enters the automatic replacement mode;

[0048] S5, the lifting mechanism retracts, the filter cup is lifted upward under traction, the servo motor controls the film outlet wheel to rotate, the filter membrane is conveyed forward, the new filter membrane part enters between the filter cup and the sand core funnel, and the old filter membrane enters the film collection wheel and is collected;

[0049] S6. After the new filter membrane is laid, the lifting mechanism is pressed down again, and the connected filter cup is pressed down tightly on the sand core funnel, and the filter membrane is automatically replaced.

[0050] The technical solution of the present invention can achieve the following technical effects:

[0051] A high-turbidity water sample pretreatment device and method are designed, and the working height of the filter cup is flexibly adjusted through a lifting mechanism to facilitate the replacement of filter paper; the liquid-adding peristaltic pump accurately controls the water sample input to ensure the stability and accuracy of the pretreatment process; the combined design of the sand core funnel and the filter membrane effectively removes suspended matter and impurities in the water sample and improves the water transparency; the innovative winding mechanism realizes rapid replacement of the filter membrane and reduces maintenance time and cost; the vacuum peristaltic pump generates negative pressure to accelerate liquid extraction and improve pretreatment efficiency. Overall, the present invention simplifies the high-turbidity water sample pretreatment process, improves the treatment efficiency and water purification effect, and provides reliable technical support for water quality monitoring and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 It is a schematic diagram of the structure of the liquid circuit principle diagram of a high turbidity water sample pretreatment device and method in the present invention;

[0054] Figure 2 It is a schematic cross-sectional structure diagram of a liquid circuit principle diagram of a high turbidity water sample pretreatment device and method in the present invention;

[0055] Figure 3 It is a schematic diagram of the lifting mechanism structure of a high turbidity water sample pretreatment device and method in the present invention;

[0056] Figure 4 It is a cross-sectional structural schematic diagram of a lifting mechanism of a high turbidity water sample pretreatment device and method in the present invention;

[0057] Figure 5 It is a schematic diagram of the installation mechanism structure of a high turbidity water sample pretreatment device and method in the present invention;

[0058] Figure 6 It is a cross-sectional structural schematic diagram of an installation mechanism of a high turbidity water sample pretreatment device and method in the present invention;

[0059] Figure 7 This is a structural schematic diagram of a high turbidity water sample pretreatment device and method installation mechanism in the present invention after omitting the box body;

[0060] Markings in the attached drawings: 1. Installation mechanism; 11. Box body; 12. Guide member; 13. Support shaft; 14. Fixing member; 15. Guide column; 16. Sealing cover; 17. Positioning pin; 18. Guide rod; 19. Power mechanism; 19a. Power motor; 19b. Worm; 19c. Worm wheel; 2. Lifting mechanism; 21. Mounting seat; 22. Transmission shaft; 23. Conducting shaft; 24. Limiting column; 25. Lead screw; 26. Guide tube; 27. Installation column; 28. Spring; 29. ​​Driving mechanism; 29a. Power shaft; 29b. Transmission gear; 29c. Driving motor; 3. Filter cup; 4. Sand core funnel; 41. Drainage pipe; 5. Liquid-adding peristaltic pump; 6. Filter membrane; 7. Winding mechanism; 71. Film discharge wheel; 72. Servo motor; 73. Film collection wheel; 8. Vacuum peristaltic pump. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0062] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] The present invention relates to a high turbidity water sample pretreatment device, such as Figures 1 to 7 As shown, including:

[0065] Mounting mechanism 1, independently fixed;

[0066] A lifting mechanism 2 is arranged on the mounting mechanism 1;

[0067] The filter cup 3 is installed at the output end of the lifting mechanism 2, and is used to hold the water sample before filtration, and the working height is adjusted by the lifting mechanism 2;

[0068] A liquid adding peristaltic pump 5 is arranged at the liquid inlet of the filter cup 3, and is used to draw the external water sample into the filter cup 3;

[0069] The sand core funnel 4 is arranged on the mounting mechanism 1 and is located below the filter cup 3. A drainage pipe 41 is arranged at the liquid outlet of the sand core funnel 4.

[0070] The filter membrane 6 is located in the middle of the filter cup 3 and the sand core funnel 4. The filter membrane 6 is arranged on a winding mechanism 7. The filter membrane 6 is wound and replaced by the winding mechanism 7.

[0071] The vacuum peristaltic pump 8 is installed at the outlet end of the drainage pipe 41 to generate negative pressure in the sand core funnel 4 to pump out the liquid:

[0072] The working height of the filter cup can be flexibly adjusted through the lifting mechanism 2 to facilitate the replacement of the filter paper 6; the liquid-adding peristaltic pump 5 accurately controls the water sample input to ensure the stability and accuracy of the pretreatment process; the combined design of the sand core funnel 4 and the filter membrane 6 can effectively remove suspended matter and impurities in the water sample and improve the transparency of the water quality; the innovative winding mechanism 7 can realize the rapid replacement of the filter membrane and reduce the maintenance time and cost; the vacuum peristaltic pump 8 generates negative pressure to accelerate the extraction of liquid and improve the pretreatment efficiency. Overall, the present invention simplifies the pretreatment process of high turbidity water samples, improves the treatment efficiency and water purification effect, and provides reliable technical support for water quality monitoring and analysis.

[0073] As a preferred solution, Figure 1 and Figure 2 As shown, the winding mechanism 7 comprises:

[0074] The film discharging wheel 71 is rotatably disposed on the mounting mechanism 1, and the filter membrane 6 is wound around the film discharging wheel 71;

[0075] A servo motor 72, the output end of which is mounted on the film discharging wheel 71, and is used for controlling the retraction and extension of the filter membrane 6;

[0076] The film collecting wheel 73 is rotatably mounted on the mounting mechanism 1, and the film collecting wheel 73 and the film discharging wheel 71 are respectively located at two ends of the filter cup 3, and are used to collect the old filter membrane 6;

[0077] The design of the winding mechanism 7 achieves precise control of the retraction and release of the filter membrane 6 through the cooperation of the film discharge wheel 71 and the servo motor 72, ensures the automation and accuracy of the filter membrane replacement during the pretreatment process, and improves work efficiency; at the same time, the setting of the film collection wheel 73 effectively collects the used filter membrane 6, which is convenient for subsequent processing and disposal, keeps the working environment clean, reduces the tediousness of manual operation, further reduces maintenance costs and time, and overall enhances the practicality and convenience of the high turbidity water sample pretreatment device.

[0078] As a preferred solution, Figure 1 and Figure 2 As shown, the filter membrane 6 used is 0.45 μm;

[0079] A 0.45μm filter membrane 6 is used, and its particle retention rate exceeds 99.99%. This preferred solution significantly improves the water purification ability of the high turbidity water sample pretreatment device. The filter membrane 6 can efficiently retain tiny particles and impurities in the water sample, ensuring that the water quality after pretreatment is clear and transparent, meeting higher standards of water quality monitoring and analysis requirements.

[0080] As a preferred solution, Figure 1 and Figure 2 As shown, silicone pads 9 are respectively provided at the connection between the bottom of the filter cup 3 and the top of the sand core funnel 4. The silicone pads 9 are clamped together to seal the connection between the filter cup 3 and the sand core funnel 4.

[0081] Silicone pads 9 are respectively arranged under the filter cup 3 and at the connecting end of the sand core funnel 4, and sealing is achieved by clamping them together. This preferred scheme greatly enhances the sealing performance of the high turbidity water sample pretreatment device. The silicone pad 9, with its excellent elasticity and corrosion resistance, effectively prevents the leakage of water samples during the pretreatment process, and ensures that the water samples can be smoothly filtered through the filter membrane 6 without being disturbed by external factors. It not only improves the efficiency and quality of water purification, but also avoids secondary pollution caused by leakage, and further ensures the accuracy of water quality monitoring and analysis. At the same time, the easy-to-clean and durable characteristics of the silicone pad 9 also reduce the maintenance requirements and costs of the device, and overall improve the reliability and practicality of the pretreatment device.

[0082] As a preferred solution, Figure 1 and Figure 2 As shown, a vent hole is provided on the top of the filter cup 3 to always maintain atmospheric pressure in the filter cup 3;

[0083] The vent hole ensures that the interior of the filter cup 3 can always maintain atmospheric pressure during the pretreatment process, so that a pressure difference is generated between it and the sand core funnel 4, ensuring that the water sample can be filtered smoothly through the filter membrane 6. The existence of the vent hole also simplifies the operating process of the pretreatment device, and there is no need to set up an additional pressure regulating device, further reducing the complexity and maintenance cost of the device.

[0084] As a preferred solution, Figure 3 and Figure 4 As shown, the lifting mechanism 2 includes:

[0085] A mounting seat 21, disposed on the mounting mechanism 1;

[0086] The transmission shaft 22 is rotatably mounted on the mounting seat 21, and a transmission shaft 23 is arranged in the inner cavity of the transmission shaft 22, and the transmission shaft 23 rotates synchronously with the transmission shaft 22, and the transmission shaft 23 is slidably mounted along the length direction of the transmission shaft 22, and a limiting column 24 is arranged at one end of the transmission shaft 23, and the limiting column 24 is located in the long slot hole of the transmission shaft 22;

[0087] The lead screw 25 is coaxially mounted on the transmission shaft 23;

[0088] The guide tube 26 is arranged on the mounting seat 21. The inner cavity of the guide tube 26 is provided with a mounting column 27. The mounting column 27 is slidably installed along the length direction of the guide tube 26. The mounting column 27 is arranged parallel to the moving track of the conduction shaft 23. The lead screw 25 is installed in cooperation with the internal thread of the mounting column 27. The filter cup 3 is installed on the mounting column 27.

[0089] A spring 28, one end of which is mounted on the lead screw 25, and the other end of which is mounted on the transmission shaft 22;

[0090] The driving mechanism 29 is disposed on the mounting seat 21 and is used to provide a rotational force to the transmission shaft 22;

[0091] The ingenious design of the lifting mechanism 2 realizes flexible and stable adjustment of the working height of the filter cup 3 by integrating the components such as the mounting seat 21, the transmission shaft 22, the conduction shaft 23, the limit column 24, the lead screw 25, the guide tube 26, the mounting column 27, the spring 28 and the driving mechanism 29. The synchronous rotation and sliding installation design of the transmission shaft 22 and the conduction shaft 23 not only ensures the compactness of the structure, but also effectively prevents the activity range of the conduction shaft 23 through the limiting effect of the limit column 24 in the long slot hole. The lead screw 25 cooperates with the internal thread of the mounting column 27, so that when the driving mechanism 29 drives the transmission shaft 22 to rotate, it can accurately control the lifting height of the mounting column 27 and the filter cup 3, thereby realizing high precision and convenience of the filter membrane 6 replacement operation. The setting of the spring 28 not only provides a buffering effect for the cooperation between the filter cup 3 and the sand core funnel 4, but also effectively reduces the impact. The sliding cooperation between the guide tube 26 and the mounting column 27 further ensures the stability of the filter cup 3 during the lifting process, avoids shaking or deviation, and improves the accuracy and safety of the pretreatment process.

[0092] As a preferred solution, Figure 3 and Figure 4 As shown, the driving mechanism 29 includes:

[0093] The power shaft 29a is rotatably mounted on the mounting seat 21, and the power shaft 29a is arranged parallel to the rotation axis of the transmission shaft 22;

[0094] Two transmission gears 29b are coaxially mounted on the transmission shaft 22 and the power shaft 29a, respectively, and the two transmission gears 29b are meshedly mounted;

[0095] The driving motor 29c is mounted on the mounting seat 21, and the output end of the driving motor 29c is mounted on the power shaft 29a;

[0096] By integrating key components such as the power shaft 29a, the transmission gear 29b and the drive motor 29c, an efficient and stable power source is provided for the lifting mechanism 2. The parallel setting of the power shaft 29a and the transmission shaft 22 and the meshing installation of the transmission gear 29b ensure the accuracy and reliability of power transmission, so that the drive motor 29c can smoothly drive the transmission shaft 22 to rotate. This design not only simplifies the power transmission path and reduces energy loss, but also effectively prevents the accidental movement of the lifting mechanism when not in operation through the self-locking characteristics of the gear transmission, thereby improving the safety and stability of the entire pretreatment device.

[0097] As a preferred solution, Figures 5 to 7 As shown, the mounting mechanism 1 comprises:

[0098] The box body 11 has a cavity inside, and a notch communicating with the box body 11 is provided on one side of the box body 11. The liquid-adding peristaltic pump 5 and the vacuum peristaltic pump 8 are both located outside the box body 11;

[0099] Two guide members 12 are symmetrically arranged on the two side walls of the cavity of the box body 11 and located at the notch. The guide members 12 are provided with a straight guide groove and a curved guide groove, and the straight guide groove and the curved guide groove are connected.

[0100] The support shaft 13 is slidably disposed in the straight grooves of the two guide members 12, and positioning grooves with the axis as the starting point are respectively disposed at both ends of the support shaft 13;

[0101] Two fixing members 14 are symmetrically arranged on the support shaft 13, and guide posts 15 are arranged on the fixing members 14, and the guide posts 15 are slidably installed with the guide straight groove and the guide arc groove of the guide member 12 respectively;

[0102] A sealing cover 16 is disposed on the two fixing members 14. The sealing cover 16 is used to seal the notch of the box body 11. A positioning pin 17 is disposed on the sealing cover 16, and the positioning pin 17 is pluggably connected to the positioning hole of the box body 11;

[0103] Two guide rods 18 are coaxially arranged at the two ends of the cavity of the box body 11, and the guide rods 18 are slidably connected with the positioning grooves of the support shaft 13, and the rotation axis of the support shaft 13 is coaxially arranged with the guide rods 18;

[0104] The power mechanism 19 is disposed on the box body 11, and the power mechanism 19 is used to provide displacement and turning power to the support shaft 13;

[0105] The preferred solution of the installation mechanism 1 realizes effective support and flexible adjustment of the internal components of the pretreatment device by integrating key components such as the box body 11, the guide member 12, the support shaft 13, the fixing member 14, the sealing cover 16, the guide rod 18 and the power mechanism 19. The design of the internal cavity of the box body 11 provides sufficient installation space for each component. At the same time, the setting of the notch facilitates the maintenance and replacement of the internal components. The guide straight groove and the guide arc groove design on the guide member 12 are slidably installed with the support shaft 13 and the positioning groove thereon, and the guide column 15 on the fixing member 14, which not only ensures the support shaft 13 in the process of linear displacement and flipping. Stability and accuracy are improved, and the complexity and volume of the device are reduced through the compactness of the structure. The plug-in connection design of the sealing cover 16 and the positioning pin 17 realizes the reliable sealing of the notch of the box body 11. The sliding connection between the guide rod 18 and the positioning groove of the support shaft 13 further enhances the stability and controllability of the support shaft 13 during the flipping process. The introduction of the power mechanism 19 provides the support shaft 13 with precise displacement and flipping power. This preferred scheme of the installation mechanism 1 significantly improves the structural compactness, operation convenience and operation stability of the high turbidity water sample pretreatment device, and provides more reliable technical support for water quality monitoring and analysis.

[0106] As a preferred solution, Figures 5 to 7 As shown, the power mechanism 19 includes:

[0107] The power motor 19a is arranged on the box body 11, and a worm 19b is coaxially arranged at the output end of the power motor 19a;

[0108] The worm wheel 19c is coaxially arranged on the support shaft 13, and the worm 19b is meshingly connected with the worm wheel 19c;

[0109] The working principle of the power mechanism 19 of this device is as follows:

[0110] When the support shaft 13 and the guide column 15 are both located in the guide straight groove of the guide member 12, the rotation of the support shaft 13 is restricted, and the worm 19b rotates and cooperates with the worm wheel 19c to drive the cover to move upward, and the positioning pin 17 is disconnected from the positioning hole of the box body 11 until the support shaft 13 moves to a position coaxial with the guide rod 18. At this time, the linear movement of the support shaft 13 stops, and the worm 19b continues to rotate and cooperates with the worm wheel 19c to drive the support shaft 13 to rotate, and the sealing cover 16 begins to flip open the notch of the box body 11;

[0111] The preferred solution of the power mechanism 19 provides an efficient and stable power source for the installation mechanism 1 by integrating key components such as the power motor 19a, the worm 19b and the worm wheel 19c. The power motor 19a is arranged on the box body 11, and the worm 19b coaxially arranged at its output end realizes a meshing transmission connection with the worm wheel 19c, thereby ensuring the accuracy and reliability of power transmission. The self-locking characteristics of the worm wheel 19b and the worm 19c transmission effectively prevent the support shaft 13 from accidentally moving in a non-working state, thereby improving the safety and stability of the entire pretreatment device.

[0112] The present invention relates to a high turbidity water sample pretreatment method, such as Figures 1 to 7 As shown, the steps include:

[0113] S1, the control element issues a pre-processing instruction, the lifting mechanism 2 starts to press down, and the filter cup 3 fixedly connected thereto presses down to press the filter membrane 6 tightly between the filter cup 3 and the sand core funnel 4;

[0114] S2, the water sample is added into the filter cup 3 from the liquid adding peristaltic pump 5, and the vacuum peristaltic pump 8 installed at the bottom connecting pipe of the sand core funnel 4 is started to generate negative pressure;

[0115] S3, the filter cup 3 is connected to the atmosphere and always maintains atmospheric pressure. The negative pressure generated in the sand core funnel 4 causes the water sample to be pressed by the atmospheric pressure from the filter cup 3 to the filter membrane 6 to the sand core funnel 4, thereby completing the filtration process;

[0116] S4, the sediment accumulated on the filter membrane 6 is too much and reaches its service life, and the filter membrane 6 enters the automatic replacement mode;

[0117] S5, the lifting mechanism 2 is retracted, the filter cup 3 is lifted upward under traction, the servo motor 72 controls the film discharging wheel 71 to rotate, the filter membrane 6 is conveyed forward, the new filter membrane 6 partially enters between the filter cup 3 and the sand core funnel 4, and the old filter membrane 6 enters the film collecting wheel 73 and is collected;

[0118] S6. After the new filter membrane 6 is laid, the lifting mechanism 2 is pressed down again, and the connected filter cup 3 is pressed down tightly onto the sand core funnel 4, and the filter membrane 6 is automatically replaced.

[0119] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high turbidity water sample pretreatment device, characterized in that: include: The mounting mechanism (1) is independently fixedly arranged; A lifting mechanism (2) is arranged on the mounting mechanism (1); A filter cup (3) is installed at the output end of the lifting mechanism (2) and is used to hold the water sample before filtration, and the working height is adjusted by the lifting mechanism (2); A liquid-adding peristaltic pump (5) is arranged at the liquid inlet of the filter cup (3), and the liquid-adding peristaltic pump (5) is used to draw an external water sample into the filter cup (3); A sand core funnel (4) is arranged on the mounting mechanism (1), and the sand core funnel (4) is located below the filter cup (3), and a drainage pipe (41) is arranged at the liquid outlet of the sand core funnel (4); A filter membrane (6) is located in the middle of the filter cup (3) and the sand core funnel (4); the filter membrane (6) is arranged on a winding mechanism (7); and the filter membrane (6) is wound up and replaced by the winding mechanism (7); A vacuum peristaltic pump (8) is installed at the water outlet end of the drainage pipe (41) and is used to generate negative pressure in the sand core funnel (4) to extract liquid.

2. The high turbidity water sample pretreatment device according to claim 1, characterized in that: The winding mechanism (7) comprises: A film discharging wheel (71) is rotatably mounted on the mounting mechanism (1), and the filter membrane (6) is wound around the film discharging wheel (71); A servo motor (72), the output end of which is mounted on the film discharging wheel (71), and is used for controlling the retraction and extension of the filter membrane (6); The film collecting wheel (73) is rotatably mounted on the mounting mechanism (1), and the film collecting wheel (73) and the film discharging wheel (71) are respectively located at two ends of the filter cup (3) and are used to collect the old filter membrane (6).

3. The high turbidity water sample pretreatment device according to claim 1, characterized in that: The filter membrane (6) used is 0.45 μm.

4. The high turbidity water sample pretreatment device according to claim 1, characterized in that: Silicone pads (9) are respectively arranged at the connection points below the filter cup (3) and above the sand core funnel (4); the silicone pads (9) are clamped together and used for sealing the connection between the filter cup (3) and the sand core funnel (4).

5. The high turbidity water sample pretreatment device according to claim 1, characterized in that: The top of the filter cup (3) is provided with a vent hole, which is used to always maintain atmospheric pressure in the filter cup (3).

6. The high turbidity water sample pretreatment device according to claim 1, characterized in that: The lifting mechanism (2) comprises: A mounting seat (21) is arranged on the mounting mechanism (1); A transmission shaft (22) is rotatably mounted on the mounting seat (21), and a conduction shaft (23) is arranged in the inner cavity of the transmission shaft (22), and the conduction shaft (23) rotates synchronously with the transmission shaft (22), and the conduction shaft (23) is slidably mounted along the length direction of the transmission shaft (22), and a limiting column (24) is arranged at one end of the conduction shaft (23), and the limiting column (24) is located in the long slot hole of the transmission shaft (22); A lead screw (25) is coaxially mounted on the transmission shaft (23); A guide tube (26) is arranged on the mounting seat (21); a mounting column (27) is arranged in the inner cavity of the guide tube (26); and the mounting column (27) is slidably installed along the length direction of the guide tube (26); the mounting column (27) is arranged parallel to the moving track of the conduction shaft (23); the lead screw (25) is installed in cooperation with the internal thread of the mounting column (27); and the filter cup (3) is installed on the mounting column (27); a spring (28), one end of which is mounted on the lead screw (25) and the other end of which is mounted on the transmission shaft (22); A driving mechanism (29) is arranged on the mounting seat (21), and the driving mechanism (29) is used to provide rotational force to the transmission shaft (22).

7. The high turbidity water sample pretreatment device according to claim 6, characterized in that: The driving mechanism (29) comprises: A power shaft (29a) is rotatably mounted on the mounting seat (21), and the power shaft (29a) is arranged parallel to the rotation axis of the transmission shaft (22); Two transmission gears (29b) are coaxially mounted on the transmission shaft (22) and the power shaft (29a), respectively, and the two transmission gears (29b) are meshedly mounted; The driving motor (29c) is mounted on the mounting seat (21), and the output end of the driving motor (29c) is mounted on the power shaft (29a).

8. The high turbidity water sample pretreatment device according to claim 1, characterized in that: The mounting mechanism (1) comprises: A box body (11) is provided with a cavity inside, and a notch communicating with the box body (11) is provided on one side of the box body (11), and the liquid-adding peristaltic pump (5) and the vacuum-drawing peristaltic pump (8) are both located outside the box body (11); Two guide members (12) are symmetrically arranged on the two side walls of the cavity of the box body (11) and located at the notch. The guide member (12) is provided with a straight guide groove and a curved guide groove, and the straight guide groove and the curved guide groove are connected. A support shaft (13) is slidably disposed in the straight grooves of the two guide members (12), and positioning grooves with the axis as the starting point are respectively disposed at both ends of the support shaft (13); Two fixing members (14) are symmetrically arranged on the support shaft (13), and the fixing members (14) are provided with guide columns (15), and the guide columns (15) are respectively slidably mounted on the guide straight groove and the guide arc groove of the guide member (12); A sealing cover (16) is arranged on the two fixing members (14), the sealing cover (16) is used to seal the notch of the box body (11), a positioning pin (17) is arranged on the sealing cover (16), and the positioning pin (17) is pluggably connected to the positioning hole of the box body (11); Two guide rods (18) are coaxially arranged at two ends of the cavity of the box body (11), and the guide rods (18) are slidably connected to the positioning grooves of the support shaft (13), and the rotation axis of the support shaft (13) is coaxially arranged with the guide rods (18); A power mechanism (19) is arranged on the box body (11), and the power mechanism (19) is used to provide displacement and turning power to the support shaft (13).

9. The high turbidity water sample pretreatment device according to claim 8, characterized in that: The power mechanism (19) comprises: A power motor (19a) is arranged on the box body (11), and a worm (19b) is coaxially arranged at the output end of the power motor (19a); The worm wheel (19c) is coaxially arranged on the support shaft (13), and the worm (19b) is meshingly transmission-connected with the worm wheel (19c).

10. A method for pretreating high turbidity water samples, characterized in that: A high turbidity water sample pretreatment device as claimed in any one of claims 1 to 9, comprising the steps of: S1, a pre-processing instruction is issued by the control element, the lifting mechanism (2) starts to press down, and the filter cup (3) fixedly connected thereto is pressed down to press the filter membrane (6) tightly between the filter cup (3) and the sand core funnel (4); S2, the water sample is added into the filter cup (3) from the liquid adding peristaltic pump (5), and the vacuum peristaltic pump (8) installed at the bottom connecting pipe of the sand core funnel (4) is started to generate negative pressure; S3, the filter cup (3) is connected to the atmosphere and always maintains atmospheric pressure, and the negative pressure generated in the sand core funnel (4) causes the water sample to flow from the filter cup (3) through the filter membrane (6) and be pressed toward the sand core funnel (4) by the atmospheric pressure, thereby completing the filtering process; S4, the sediment accumulated on the filter membrane (6) is too much and reaches its service life, and the filter membrane (6) enters an automatic replacement mode; S5, the lifting mechanism (2) is retracted, the filter cup (3) is lifted upward under traction, the servo motor (72) controls the film discharge wheel (71) to rotate, the filter membrane (6) is conveyed forward, the new filter membrane (6) partially enters between the filter cup (3) and the sand core funnel (4), and the old filter membrane (6) enters the film collection wheel (73) and is collected; S6. After the new filter membrane (6) is laid, the lifting mechanism (2) is pressed down again, and the filter cup (3) is connected and pressed down tightly onto the sand core funnel (4), and the filter membrane (6) is automatically replaced.

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