An integrated water sample preparation and filtration device

Abstract

This invention belongs to the field of water sample preparation technology, specifically referring to an integrated water sample preparation and filtration device, including a thrust sensing component, a thrust feedback component, a thrust adjustment component, a filter press component, a sample preparation component, a support component, a pressing component, and a frame component. The thrust sensing component is mounted on the pressing component, the thrust feedback component array is arranged within the thrust sensing component, and the thrust adjustment component is located within the pressing component. This invention, through a synchronous pressurization technique, not only improves the efficiency of water sample preparation but also allows for the monitoring and control of overall and local pressures during the pressurization process. It can adjust the extension speed of the electric actuator in real time through the overall thrust and prevent damage to individual filter press components due to excessive pressure.

Description

Technical Field

[0001] This invention belongs to the field of water sample preparation technology, specifically referring to an integrated water sample preparation and filtration device. Background Technology

[0002] Before analyzing the composition of a water sample, it is often necessary to remove various suspended solids and interfering substances by filtration to prevent clogging and damage to the precision testing equipment during subsequent analysis. Currently, this step is mostly done manually. The main reason is that filtration requires applying a continuous thrust to the syringe slowly, and this thrust needs to be flexible. As suspended solids are filtered out, the permeability of the filter element actually decreases. If the thrust is applied at a constant speed, it is easy to burst the syringe or filter due to excessive pressure. Summary of the Invention

[0003] To address the above issues and overcome the shortcomings of existing technologies, this invention provides an integrated water sample preparation and filtration device. To balance filtration efficiency and safety during the filtration process, this invention proposes a thrust sensing component, a thrust feedback component, and a thrust adjustment component. Through a synchronous pressure application scheme, not only can the efficiency of water sample preparation be improved, but the overall pressure and local pressure can also be monitored and controlled separately during the pressure application process. This allows for real-time adjustment of the extension speed of the electric push rod through the overall thrust, while also preventing damage to individual filter press components due to excessive pressure.

[0004] The technical solution adopted by this invention is as follows: This invention proposes an integrated water sample preparation and filtration treatment device, including a thrust sensing component, a thrust feedback component, a thrust adjustment component, a pressure filter component, a sample preparation component, a support component, a pressing component, and a frame assembly. The thrust sensing component is disposed on the pressing component, the thrust feedback component array is disposed in the thrust sensing component, the thrust adjustment component is disposed in the pressing component, the pressure filter component array is disposed on the support component, the sample preparation component is disposed on the support component, the support component is disposed in the frame assembly, and the pressing component is disposed on the top of the frame assembly.

[0005] By using a synchronous pressure application technique, not only can the efficiency of water sample preparation be improved, but the pressure can also be monitored and controlled during the pressure application process, while avoiding damage to individual filter press components due to excessive pressure.

[0006] Furthermore, the thrust sensing assembly includes a hydraulic chamber, a sensing piston, a hydraulic tube, and an adjusting chamber. The hydraulic chamber is located below the thrust assembly, and the bottom of the hydraulic chamber is provided with an array of orifices. The sensing piston is engaged and slidably disposed in the hydraulic chamber. An elastic element is provided between the sensing piston and the hydraulic chamber. The hydraulic tube is located between the hydraulic chamber and the adjusting chamber, and the adjusting chamber is located in the thrust assembly.

[0007] The thrust sensing component and thrust adjustment component can sense the overall pressure applied downward by the electric actuator and automatically adjust the extension speed of the electric actuator through negative feedback, thereby stabilizing the output thrust of the electric actuator and avoiding excessive thrust fluctuations.

[0008] Furthermore, the thrust feedback assembly includes a thrust cap, a feedback spring, and an injection push rod. The thrust cap is slidably disposed in the orifice portion, the feedback spring is disposed between the thrust cap and the sensing piston, and the injection push rod has an injection piston at its bottom. The injection piston is engaged and slidably disposed in the filter press assembly.

[0009] When the resistance of each filter press assembly is uniform, the thrust on the thrust cap can be transmitted to the sensing piston; when the resistance of an individual filter press assembly surges and exceeds the threshold, an alarm signal can be issued through the separation of the contact sensing ring and the hydraulic chamber, thereby preventing damage to the individual filter press assembly by stopping the machine.

[0010] Furthermore, the thrust adjustment assembly includes an adjustment piston, a rack, a speed control knob, and a return spring. The adjustment piston is engaged and slidably disposed in the adjustment cavity. The rack is fixedly connected to the adjustment piston. The return spring is disposed between the adjustment cavity and the adjustment piston. The outer ring of the speed control knob is provided with a gear portion. The rack and the gear portion mesh and drive each other.

[0011] When the pressure in the sensing piston changes, the adjusting piston will drive the rack to move laterally, which in turn drives the speed control knob to rotate, thereby automatically and dynamically adjusting the extension speed of the electric actuator.

[0012] Furthermore, the pressure filtration assembly includes a syringe, a filter, and a pressure filtration membrane. The syringe and the filter are connected and are fitted together in a support assembly. The pressure filtration membrane is disposed in the filter, and the bottom of the filter is provided with a drain port.

[0013] Furthermore, the support assembly includes an adjustable support frame, a support bracket, and a support base. The adjustable support frame is mounted on the frame assembly, the support bracket is placed on the adjustable support frame, and the support base is located below the support bracket.

[0014] Furthermore, the sample preparation assembly includes a test tube holder, a test tube base, and a water receiving test tube. The test tube holder is placed on an adjustable support frame, the test tube base is located below the test tube holder, the water receiving test tube is secured in the test tube holder, and the water receiving test tube is located directly below the drain outlet.

[0015] The filter press assembly and water receiving test tubes are respectively arrayed in the holes of the support bracket and the test tube bracket. By slowly lowering the electric push rod, multiple sets of injection push rods can be pressed simultaneously, thereby greatly improving the efficiency of preparing test samples.

[0016] Furthermore, the frame assembly includes a housing and a column, the column being disposed within the housing, and the adjustable support bracket being adjustablely disposed on the column.

[0017] Furthermore, the pushing assembly includes an upper housing, an electric push rod, and a push plate. The upper housing is fixed to the top of the outer casing, the electric push rod is fixed to the upper housing, and the push plate is fixed to the telescopic part of the electric push rod.

[0018] Preferably, the push plate is slidably mounted on the column, the hydraulic chamber is detachably located below the push plate, and the adjustment chamber is located at the inner top of the upper housing.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows:

[0020] (1) By using the synchronous pressure application technology, not only can the efficiency of water sample preparation be improved, but the pressure can also be monitored and controlled during the pressure application process, while avoiding damage to individual filter press components due to excessive pressure.

[0021] (2) The thrust sensing component and the thrust adjustment component can sense the overall pressure applied downward by the electric push rod and automatically adjust the extension speed of the electric push rod through negative feedback, thereby stabilizing the output thrust of the electric push rod and avoiding the problem of excessive thrust fluctuation.

[0022] (3) When the resistance of each filter press assembly is uniform, the thrust on the thrust cap can be transmitted to the sensing piston; when the resistance of an individual filter press assembly surges and exceeds the threshold, an alarm signal can be issued by separating the contact sensing ring and the hydraulic chamber, thereby preventing damage to the individual filter press assembly by stopping the machine.

[0023] (4) When the pressure in the sensing piston changes, the adjusting piston will drive the rack to move laterally, thereby driving the speed control knob to rotate, and thus automatically and dynamically adjusting the extension speed of the electric push rod.

[0024] (5) The filter press assembly and the water receiving test tube are respectively arranged in the holes of the support bracket and the test tube bracket. By slowly lowering the electric push rod, multiple sets of injection push rods can be pressed simultaneously, thereby greatly improving the efficiency of preparing test samples. Attached Figure Description

[0025] Figure 1 This is a perspective view of an integrated water sample preparation and filtration device proposed in this invention.

[0026] Figure 2This is a front view of an integrated water sample preparation and filtration device proposed in this invention;

[0027] Figure 3 for Figure 2 A cross-sectional view along section line AA;

[0028] Figure 4 for Figure 3 A cross-sectional view along the cutting line BB;

[0029] Figure 5 for Figure 4 A magnified view of a section at point I;

[0030] Figure 6 for Figure 4 Enlarged view of a section at point II;

[0031] Figure 7 for Figure 4 Enlarged view of a section at point III;

[0032] Figure 8 for Figure 1 A magnified view of a section at point IV.

[0033] The components include: 1. Thrust sensing assembly; 2. Thrust feedback assembly; 3. Thrust adjustment assembly; 4. Filter press assembly; 5. Sample preparation assembly; 6. Support assembly; 7. Pressing assembly; 8. Frame assembly; 11. Hydraulic chamber; 12. Sensing piston; 13. Hydraulic pipe; 14. Adjustment chamber; 21. Thrust cap; 22. Feedback spring; 23. Injection push rod; 31. Adjustment piston; 32. Rack; 33. Speed ​​control knob; 34. Return spring; 4. 1. Syringe; 42. Filter; 43. Pressure filter membrane; 51. Test tube holder; 52. Test tube base; 53. Water receiving test tube; 61. Adjustable support frame; 62. Support bracket; 63. Support base; 71. Upper housing; 72. Electric actuator; 73. Push plate; 81. Outer shell; 82. Column; 111. Booster; 211. Contact sensing ring; 231. Injection piston; 331. Gear section; 421. Drain outlet.

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] like Figures 1-8 As shown, the present invention proposes an integrated water sample preparation and filtration device, including a thrust sensing component 1, a thrust feedback component 2, a thrust adjustment component 3, a pressure filter component 4, a sample preparation component 5, a support component 6, a pressing component 7, and a frame assembly 8. The thrust sensing component 1 is disposed on the pressing component 7, the thrust feedback component 2 is arrayed in the thrust sensing component 1, the thrust adjustment component 3 is disposed in the pressing component 7, the pressure filter component 4 is arrayed on the support component 6, the sample preparation component 5 is disposed on the support component 6, the support component 6 is disposed in the frame assembly 8, and the pressing component 7 is disposed on the top of the frame assembly 8.

[0038] By using a synchronous pressure application technology, not only can the efficiency of water sample preparation be improved, but the pressure can also be monitored and controlled during the pressure application process, while avoiding damage to individual filter press components 4 due to excessive pressure.

[0039] The thrust sensing assembly 1 includes a hydraulic chamber 11, a sensing piston 12, a hydraulic tube 13, and an adjusting chamber 14. The hydraulic chamber 11 is located below the thrust assembly 7. The bottom of the hydraulic chamber 11 is provided with an array of orifice portions 111. The sensing piston 12 is engaged and slidably disposed in the hydraulic chamber 11. An elastic element is provided between the sensing piston 12 and the hydraulic chamber 11. The hydraulic tube 13 is disposed between the hydraulic chamber 11 and the adjusting chamber 14. The adjusting chamber 14 is disposed in the thrust assembly 7.

[0040] The thrust sensing component 1 and the thrust adjustment component 3 can sense the overall pressure applied downward by the electric push rod 72, and automatically adjust the extension speed of the electric push rod 72 through negative feedback, thereby stabilizing the output thrust of the electric push rod 72 and avoiding the problem of excessive thrust fluctuation.

[0041] The thrust feedback assembly 2 includes a thrust cap 21, a feedback spring 22, and an injection push rod 23. The thrust cap 21 is slidably disposed in the orifice 111. The feedback spring 22 is disposed between the thrust cap 21 and the sensing piston 12. The bottom of the injection push rod 23 is provided with an injection piston 231, which is engaged and slidably disposed in the filter press assembly 4.

[0042] When the resistance of each filter press assembly 4 is uniform, the thrust borne by the thrust cap 21 can be transmitted to the sensing piston 12; when the resistance of an individual filter press assembly 4 surges and exceeds the threshold, an alarm signal can be issued by separating the contact sensing ring 211 and the hydraulic chamber 11, thereby preventing damage to the individual filter press assembly 4 by stopping the machine.

[0043] The thrust adjustment assembly 3 includes an adjustment piston 31, a rack 32, a speed adjustment knob 33, and a return spring 34. The adjustment piston 31 is engaged and slidably disposed in the adjustment cavity 14. The rack 32 is fixedly connected to the adjustment piston 31. The return spring 34 is disposed between the adjustment cavity 14 and the adjustment piston 31. The outer ring of the speed adjustment knob 33 is provided with a gear part 331, and the rack 32 and the gear part 331 mesh and drive each other.

[0044] When the pressure in the sensing piston 12 changes, the adjusting piston 31 will drive the rack 32 to move laterally, thereby driving the speed control knob 33 to rotate, thus achieving automatic dynamic adjustment of the extension speed of the electric push rod 72.

[0045] The pressure filter assembly 4 includes a syringe 41, a filter 42 and a pressure filter membrane 43. The syringe 41 and the filter 42 are connected and are locked together in the support assembly 6. The pressure filter membrane 43 is disposed in the filter 42. The bottom of the filter 42 is provided with a drain port 421.

[0046] The support assembly 6 includes an adjustable support frame 61, a support bracket 62, and a support base 63. The adjustable support frame 61 is mounted on the frame assembly 8, the support bracket 62 is mounted on the adjustable support frame 61, and the support base 63 is located below the support bracket 62.

[0047] The sample preparation assembly 5 includes a test tube holder 51, a test tube base 52, and a water receiving test tube 53. The test tube holder 51 is placed on an adjustable support frame 61, the test tube base 52 is located below the test tube holder 51, and the water receiving test tube 53 is locked in the test tube holder 51 and is located directly below the drain outlet 421.

[0048] The filter press assembly 4 and the water receiving test tube 53 are respectively arranged in the holes of the support bracket 62 and the test tube bracket 51. By slowly lowering the electric push rod 72, multiple sets of injection push rods 23 can be pressed simultaneously, thereby greatly improving the efficiency of preparing test samples.

[0049] The rack assembly 8 includes a housing 81 and a column 82, with the column 82 located in the housing 81 and an adjustable support 61 adjustablely mounted on the column 82.

[0050] The pushing assembly 7 includes an upper housing 71, an electric push rod 72, and a push plate 73. The upper housing 71 is fixed to the top of the outer casing 81, the electric push rod 72 is fixed to the upper housing 71, and the push plate 73 is fixed to the telescopic part of the electric push rod 72.

[0051] The push plate 73 is engaged and slidably mounted on the column 82, the hydraulic chamber 11 is detachably located below the push plate 73, and the adjustment chamber 14 is located at the inner top of the upper housing 71.

[0052] In practical use, the user first needs to draw the water sample to be filtered through the syringe 41, then install the syringe 41 and the filter 42 on the support bracket 62 and the support base 63 respectively, and insert the bottom of the syringe 41 into the filter 42; the syringe 41 and filter 42 are arranged in several groups.

[0053] Then insert the water receiving test tube 53 into the hole of the test tube holder 51, and finally place the support bracket 62 and the test tube holder 51 on the two sets of adjustable support brackets 61 respectively, so that the water receiving test tube 53 is located directly below the drain outlet 421.

[0054] Then start the equipment, control the electric push rod 72 to extend slowly, and drive the push plate 73 to descend synchronously;

[0055] When the push plate 73 descends, it can apply downward pressure to all the injection plungers 23, thereby pushing the liquid in the syringe 41 into the filter 42. After being filtered by the pressure filter membrane 43, the liquid falls into the water collection tube 53 for subsequent testing.

[0056] If the impurity content in all syringes 41 is similar, then the resistance of the liquid flowing through the filter 42 and the required thrust acting on the injection plunger 23 will also be similar. If the resistance increases, but the extension speed of the electric plunger 72 remains unchanged, then the liquid pressure in the hydraulic chamber 11 will increase.

[0057] At this time, the liquid pushes the regulating piston 31 and rack 32 to move laterally outward. When the rack 32 moves laterally, it drives the speed control knob 33 to rotate, thereby reducing the extension speed of the electric push rod 72 and thus avoiding the problem of damage to the filter press assembly 4 due to excessive pressure.

[0058] If the resistance decreases (which is unlikely to happen), but the extension speed of the electric actuator 72 remains unchanged, the fluid pressure in the hydraulic chamber 11 will decrease.

[0059] At this time, the liquid pushes the regulating piston 31 and rack 32 to move laterally inward. When the rack 32 moves laterally, it drives the speed control knob 33 to rotate, thereby increasing the extension speed of the electric push rod 72 and thus avoiding the problem of low filtration efficiency due to insufficient pressure.

[0060] If an individual syringe 41 causes excessive impurities, resulting in rapid blockage of the corresponding pressure filter membrane 43, the pressure on that syringe plunger 23 will be significantly greater than that on other syringe plungers 23. If the pressure at that position exceeds the elastic force of the feedback spring 22, the thrust cap 21 will retract towards the interior of the hydraulic chamber 11, causing the contact sensing ring 211 to leave the inner wall of the hydraulic chamber 11. At this time, an error code will be sent to the outside and the machine will stop, thereby preventing individual pressure filter components 4 from being damaged due to excessive resistance.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An integrated water sample preparation and filtration device, characterized in that: The assembly includes a thrust sensing component (1), a thrust feedback component (2), a thrust adjustment component (3), a pressure filtration component (4), a sample preparation component (5), a support component (6), a pressing component (7), and a frame assembly (8). The thrust sensing component (1) is located on the pressing component (7), the thrust feedback component (2) is arrayed in the thrust sensing component (1), the thrust adjustment component (3) is located in the pressing component (7), the pressure filtration component (4) is arrayed on the support component (6), the sample preparation component (5) is located on the support component (6), the support component (6) is located in the frame assembly (8), and the pressing component (7) is located on the top of the frame assembly (8). The thrust sensing assembly (1) includes a hydraulic chamber (11), a sensing piston (12), a hydraulic tube (13), and an adjusting chamber (14). The hydraulic chamber (11) is located below the thrust assembly (7). The bottom of the hydraulic chamber (11) is provided with a header (111). The sensing piston (12) is engaged and slidably disposed in the hydraulic chamber (11). An elastic element is provided between the sensing piston (12) and the hydraulic chamber (11). The hydraulic tube (13) is located between the hydraulic chamber (11) and the adjusting chamber (14). The adjusting chamber (14) is located in the thrust assembly (7). The thrust feedback assembly (2) includes a thrust cap (21), a feedback spring (22), and an injection push rod (23). The thrust cap (21) is slidably disposed in the orifice (111). The feedback spring (22) is disposed between the thrust cap (21) and the sensing piston (12). The bottom of the injection push rod (23) is provided with an injection piston (231). The injection piston (231) is engaged and slidably disposed in the filter press assembly (4). When the resistance of an individual filter press assembly (4) surges and exceeds the threshold, the thrust cap (21) will retract toward the interior of the hydraulic chamber (11) and separate the contact sensing ring (211) from the hydraulic chamber (11), then issue an alarm signal and stop the machine; The thrust adjustment assembly (3) includes an adjustment piston (31), a rack (32), a speed adjustment knob (33), and a return spring (34). The adjustment piston (31) is engaged and slidably disposed in the adjustment cavity (14). The rack (32) is fixedly connected to the adjustment piston (31). The return spring (34) is disposed between the adjustment cavity (14) and the adjustment piston (31). The outer ring of the speed adjustment knob (33) is provided with a gear part (331). The rack (32) and the gear part (331) mesh and drive each other. The pressure filter assembly (4) includes a syringe (41), a filter (42) and a pressure filter membrane (43). The syringe (41) and the filter (42) are connected. The syringe (41) and the filter (42) are fitted together in the support assembly (6). The pressure filter membrane (43) is located in the filter (42). The bottom of the filter (42) is provided with a drain outlet (421).

2. The integrated water sample preparation and filtration device of claim 1, wherein: The support assembly (6) includes an adjustable support frame (61), a support bracket (62) and a support base (63). The adjustable support frame (61) is mounted on the frame assembly (8), the support bracket (62) is placed on the adjustable support frame (61), and the support base (63) is located below the support bracket (62).

3. The integrated water sample preparation and filtration device of claim 2, wherein: The sample preparation component (5) includes a test tube holder (51), a test tube base (52), and a water receiving test tube (53). The test tube holder (51) is placed on an adjustable support frame (61), the test tube base (52) is located below the test tube holder (51), and the water receiving test tube (53) is fitted into the test tube holder (51). The water receiving test tube (53) is located directly below the drain outlet (421).

4. The integrated water sample preparation and filtration device according to claim 3, characterized in that: The frame assembly (8) includes a housing (81) and a column (82), the column (82) being disposed in the housing (81), and the adjustable support frame (61) being adjustablely disposed on the column (82).

5. The integrated water sample preparation and filtration device according to claim 4, characterized in that: The pushing assembly (7) includes an upper housing (71), an electric push rod (72), and a push plate (73). The upper housing (71) is fixed to the top of the outer shell (81), the electric push rod (72) is fixed in the upper housing (71), and the push plate (73) is fixed to the telescopic part of the electric push rod (72).

6. The integrated water sample preparation and filtration device according to claim 5, characterized in that: The push plate (73) is engaged and slidably mounted on the column (82), the hydraulic chamber (11) is detachably mounted below the push plate (73), and the adjustment chamber (14) is located at the inner top of the upper box (71).

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