Injection type sample filtering device

Abstract

The utility model discloses an injection type sample filtering device which comprises a fixed seat, a needle cylinder type filter, an injector and a driving part, a first platform and a second platform are arranged on the fixed seat from bottom to top, and the first platform is used for placing a sample collecting container; the needle cylinder type filter is arranged on the second platform; a liquid inlet is formed in the top of the needle cylinder type filter, and a liquid outlet is formed in the bottom; the injector is arranged on the fixed seat and is positioned above the second platform; an outlet of the injector is in butt joint with the liquid inlet; the driving part is arranged on the fixed seat; the driving part is connected with a push rod of the injector and used for vertically pushing the push rod. The syringe and the needle cylinder type filter are fixed, and the push rod is pushed by the driving part with fixed thrust, so that the stability of filtering operation is improved, automatic filtering is realized, manual operation is replaced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to an injection-type sample filtration device. Background Technology

[0002] In testing techniques, particulate matter in samples can affect instruments and equipment, so filtration is necessary before testing. For example, in environmental testing, the analysis of mixtures such as soil and sediment requires filtering impurities to reduce interference during the actual testing process. Currently, syringe filters are widely used in laboratories, and their filtration effect is better than that of filter paper.

[0003] However, existing syringe-type filtration devices, which include a syringe and a syringe filter at the tip of the syringe, require manual operation to push the syringe, resulting in low work efficiency. Furthermore, due to the pressure generated during the pushing process, the operator needs to hold both the syringe and the syringe filter tightly to prevent them from separating, which makes it difficult to guarantee the stability of the operation. There is a risk of the syringe deviating during the filtration process, leading to leakage, which may in turn cause the equipment to become clogged and unusable.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an injection sample filtration device, which aims to solve the problems of existing syringe-type filtration devices requiring manual operation and having unstable filtration effect and efficiency.

[0006] The technical solution of this utility model is as follows:

[0007] An injection sample filtration device, comprising:

[0008] A fixing base, wherein a first platform and a second platform are provided on the fixing base from bottom to top, and the first platform is used to place a sample collection container;

[0009] A syringe filter is provided on the second platform; the syringe filter has an inlet at the top and an outlet at the bottom.

[0010] A syringe is mounted on the fixed base, located above the second platform; the syringe outlet is connected to the liquid inlet.

[0011] A driving component is disposed on the fixed base; the driving component is connected to the plunger of the syringe and is used to push the plunger up and down.

[0012] The aforementioned injection sample filtration device, wherein the driving component includes:

[0013] A bracket is provided on the fixed base; a first support plate and a second support plate are arranged parallel to each other on the bracket, with the first support plate located above the second support plate; and the first support plate is provided with a first mounting hole, and the second support plate is provided with a second mounting hole at a position directly opposite the first mounting hole.

[0014] One end of the lead screw is inserted into the first mounting hole, and the other end is inserted into the second mounting hole;

[0015] A motor is mounted on the bracket; the output shaft of the motor is connected to the lead screw drive.

[0016] A pressure plate is sleeved on the lead screw and engages with the lead screw; the pressure plate extends above the push rod and is used to abut against the push rod.

[0017] The injection sample filtration device includes a drive component comprising a guide rod disposed between the first support plate and the second support plate, and arranged parallel to the lead screw; the pressure plate is provided with a clearance hole for inserting the guide rod.

[0018] The injection sample filtration device includes a control component and a pressure sensor. The pressure sensor is disposed on the second platform and is used to monitor the pressure on the syringe filter. The control component is electrically connected to the pressure sensor and the motor.

[0019] The injection sample filtering device includes an alarm component, which is electrically connected to the control component; the alarm component includes any one of an indicator light, a buzzer, and a vibrator.

[0020] The injection sample filtration device includes a first channel on the second platform, and a supporting step protruding from the side wall of the first channel, which supports the syringe filter.

[0021] The injection-type sample filtering device includes a third platform on the fixed base, which extends above the second platform; and a second channel is provided on the third platform opposite to the first channel, and the syringe is detachably disposed in the second channel.

[0022] The injection sample filtering device includes a longitudinally extending slide bar on the fixed base; a second platform slidably disposed on the slide bar; and / or, a third platform slidably disposed on the slide bar.

[0023] The injection sample filtration device includes multiple syringe filters spaced apart on the second platform; and multiple syringes spaced apart on the third platform.

[0024] The injection-type sample filtration device includes a sample tube rack on the fixed base, the sample tube rack including multiple side-by-side receiving slots for placing the sample collection container.

[0025] Compared with the prior art, the embodiments of this utility model have the following advantages:

[0026] This utility model discloses an injection-type sample filtration device that stabilizes both the syringe and the syringe filter on a fixed base. A sample collection container is placed below the syringe filter. A drive unit pushes the syringe plunger to achieve automated filtration. During operation, the drive unit is activated, steadily pushing the syringe plunger with a set force, propelling the liquid in the syringe towards the syringe filter to achieve filtration. This improves filtration efficiency and stability, replaces manual operation, avoids the uncertainties associated with manual operation, and facilitates rapid sample filtration, thus increasing work efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the injection-type sample filtration device in this utility model;

[0029] Figure 2 This is an exploded view of the structure of the injection-type sample filtration device in this utility model;

[0030] Figure 3 This is a side view of the injection-type sample filtering device of this utility model;

[0031] Figure 4 This is a simplified structural diagram of the injection-type sample filtration device in this utility model.

[0032] Among them, 10 is a fixed base; 11 is a first platform; 12 is a second platform; 121 is a first channel; 122 is a supporting step; 13 is a third platform; 131 is a second channel; 14 is a slide bar; 20 is a syringe filter; 30 is a syringe; 31 is a push rod; 40 is a driving component; 41 is a bracket; 411 is a first support plate; 412 is a second support plate; 42 is a lead screw; 43 is a motor; 44 is a pressure plate; 45 is a guide rod; 50 is a control component; 60 is a pressure sensor; and 70 is an alarm component. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0035] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0036] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0037] For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to encompass not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways, and the spatial relational terms used herein will be interpreted accordingly.

[0038] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0039] See Figure 1 In one embodiment of this utility model application, an injection-type sample filtration device is disclosed, comprising a fixed base 10, a syringe filter 20, a syringe 30, and a driving component 40. The fixed base 10 has a first platform 11 and a second platform 12 arranged from bottom to top. The first platform 11 is used to place a sample collection container. The syringe filter 20 is disposed on the second platform 12. The syringe filter 20 has an inlet at its top and an outlet at its bottom. The syringe 30 is disposed on the fixed base 10, located above the second platform 12. The outlet of the syringe 30 is connected to the inlet. The driving component 40 is disposed on the fixed base 10. The driving component 40 is connected to the push rod 31 of the syringe 30 and is used to push the push rod 31 up and down.

[0040] The injection-type sample filtration device disclosed in this embodiment can be used in chemical analysis, environmental monitoring, laboratory analysis and other work scenarios. It improves the stability and efficiency of filtration by replacing manual operation with automated filtration.

[0041] Specifically, the mounting base 10 can be installed on a horizontal surface such as a laboratory bench or workbench, so that the first platform 11 and the second platform 12 are arranged longitudinally. This facilitates the longitudinal placement of the syringe filter 20 and the syringe 30, allowing the liquid to flow vertically downwards for filtration. Alternatively, the mounting base 10 can be connected to the platform by welding, snap-fitting, or other methods to further increase the stability of the device during operation.

[0042] In this embodiment, both the syringe 30 and the syringe filter 20 are mounted on the fixed base 10 to maintain stability, so that the entire device is in a stable state during the filtration process, reducing the possibility of displacement or tilting, thereby avoiding leakage and preventing impurities from damaging the device.

[0043] Specifically, a sample collection container is placed below the syringe filter 20. The drive component 40 pushes the plunger 31 of the syringe 30 to achieve automated filtration. Simply by activating the drive component 40, the plunger 31 of the syringe 30 can be steadily pushed with a set force to push the liquid in the syringe 30 towards the syringe filter 20 to achieve filtration. This improves the efficiency and stability of filtration, replaces manual operation, avoids the influence of uncertainties caused by manual operation, and facilitates the rapid acquisition of filtered samples, thereby improving work efficiency.

[0044] Specifically, the syringe 30 disclosed in this embodiment consists of a syringe barrel and a plunger 31, similar to a medical syringe 30. The liquid to be filtered is injected into the syringe barrel. The front end of the syringe barrel has an outlet that connects to the syringe-type filter 20, and the rear end of the syringe barrel is inserted into the plunger 31. To facilitate observation of the filtered volume, the syringe barrel can be made transparent or semi-transparent, for example, a transparent syringe barrel made of plastic. Furthermore, graduation lines can be provided on the syringe barrel for easy observation of the filtration process.

[0045] Specifically, the syringe filter 20 disclosed in this embodiment includes, but is not limited to, a syringe filter 20. The syringe filter 20 has a filtration channel that connects the inlet and outlet. The filtration channel is wide in the middle and narrow at both ends, so a filter membrane with a larger area can be set in the middle of the filtration channel to improve the filtration speed.

[0046] like Figure 1 , Figure 2 and Figure 3As shown in this embodiment, the driving component 40 includes a bracket 41, a lead screw 42, a motor 43, and a pressure plate 44. The bracket 41 is disposed on the fixed base 10. A first support plate 411 and a second support plate 412 are arranged parallel to each other on the bracket 41, with the first support plate 411 located above the second support plate 412. The first support plate 411 has a first mounting hole, and the second support plate 412 has a second mounting hole located opposite the first mounting hole. One end of the lead screw 42 is inserted into the first mounting hole, and the other end is inserted into the second mounting hole. The motor 43 is disposed on the bracket 41. The output shaft of the motor 43 is connected to the lead screw 42 in a transmission manner. The pressure plate 44 is sleeved on the lead screw 42 and meshes with the lead screw 42. The pressure plate 44 extends above the push rod 31 and is used to abut against the push rod 31.

[0047] The drive component 40 disclosed in this embodiment uses mechanical transmission to control the thrust of the syringe 30, achieving high control precision and stable thrust. Force transmission is achieved through the engagement of the lead screw 42 and the pressure plate 44, converting the rotational force output by the motor 43 into a linear thrust, ensuring stable propulsion of the syringe 30 and preventing deviation. Furthermore, the lead screw 42 and the pressure plate 44 remain engaged throughout the entire process, allowing the syringe to stop at any position when the motor 43 is turned off, precisely controlling the volume of the filtered sample and improving the control precision of the filtration operation.

[0048] On the other hand, if impurities damage the equipment or the filter membrane during the filtration process, affecting the filtration results, the process can be stopped in time, thus increasing the safety of the filtration operation.

[0049] Specifically, in this embodiment, the motor 43 can be a stepper motor 43. By utilizing the high-precision control advantage of the stepper motor 43, the controllability of the device can be further improved.

[0050] For example Figure 1 , Figure 2 and Figure 3 As shown, in another embodiment of this invention, the lead screw 42 is arranged parallel to the syringe 30; the driving component 40 includes a guide rod 45, which is disposed between the first support plate 411 and the second support plate 412 and is arranged parallel to the lead screw 42; the pressure plate 44 is provided with a clearance hole for inserting the guide rod 45.

[0051] In this embodiment, the lead screw 42 is parallel to the syringe 30. When the pressure plate 44 moves, the direction of the pressure applied to the syringe 30 is consistent with the axis of the syringe 30. Therefore, it will only push the push rod 31, thereby reducing damage to the syringe and ensuring the smooth progress of the filtration operation.

[0052] In this embodiment, the guide rod 45 is inserted into the pressure plate 44 to make the connection between the pressure plate 44 and the lead screw 42 stable and always horizontal without deviation. Moreover, the pressure plate 44 is engaged with the lead screw 42 and will not loosen or disengage, thereby improving the stability of power transmission.

[0053] like Figure 2 As shown, in another embodiment of this invention, the second platform 12 is provided with a first channel 121, and a support step 122 is provided protruding on the side wall of the first channel 121. The support step 122 is used to support the syringe filter 20.

[0054] In this embodiment, the syringe filter 20 is inserted into the first channel 121 from above. During filtration, the syringe 30 presses against the syringe filter 20 from above, keeping the syringe filter 20 stable. By detachably placing the syringe filter 20 in the first channel 121, it is easy to replace and to select different models of syringe filters 20 to combine with different models of syringes 30, adapting to more usage scenarios, meeting more usage requirements, facilitating the reuse of the filtration device, and reducing cross-contamination of filtered samples.

[0055] like Figure 1 and Figure 2 As shown, in another embodiment of this invention, the fixing base 10 is provided with a third platform 13, which extends above the second platform 12; and the third platform 13 is provided with a second channel 131 at a position opposite to the first channel 121, and the syringe 30 is detachably disposed in the second channel 131.

[0056] In this embodiment, the syringe 30 is stabilized by the third platform 13, keeping it above the second platform 12, thereby ensuring stable docking with the syringe filter 20. Furthermore, the syringe 30 is detachably connected to the third platform 13, facilitating the replacement of different models of syringe 30 to meet varying filtration requirements; moreover, the syringe 30 can be removed and refilled with the sample to be tested, simplifying operation.

[0057] For example Figure 1 and Figure 2 As shown, in another embodiment of this invention, the fixed base 10 is provided with a longitudinally extending slide rod 14; the second platform 12 is slidably disposed on the slide rod 14, or the third platform 13 is slidably disposed on the slide rod 14; or the second platform 12 and the third platform 13 are simultaneously slidably disposed on the slide rod 14.

[0058] In this embodiment, by setting the second platform 12 and the third platform 13 to be slidable, the positions of the syringe filter 20 and the syringe 30 are adjustable, thereby facilitating the combined use of syringe filters 20 of different sizes and syringes 30 of different sizes, and adapting to more usage scenarios.

[0059] Specifically, as another embodiment of this invention, multiple syringe filters 20 are provided, and these multiple syringe filters 20 are spaced apart on the second platform 12; multiple syringes 30 are provided, and these multiple syringes 30 are spaced apart on the third platform 13. In this embodiment, by providing multiple syringes 30 and multiple syringe filters 20, multiple filtration channels are formed, which facilitates the simultaneous filtration of multiple samples and further improves filtration efficiency. Therefore, this embodiment can also be equipped with multiple stepper motors 43 to control the advance speed of each syringe 30, meeting diverse needs.

[0060] Specifically, as another embodiment of this invention, a sample tube rack is provided on the fixing base 10. The sample tube rack includes multiple side-by-side receiving slots for placing the sample collection containers. In this embodiment, the sample collection containers can be beakers, conical flasks, test tubes, etc. By setting up the sample tube rack, multiple sample collection containers can be conveniently stored. When filtering multiple samples, the sample collection containers can be temporarily stored, facilitating batch processing.

[0061] like Figure 4 As shown, in another embodiment of this invention, the injection sample filtration device includes a control component 50 and a pressure sensor 60. The pressure sensor 60 is disposed on the second platform 12 and is used to monitor the pressure on the syringe filter 20. The control component 50 is electrically connected to the pressure sensor 60 and the motor 43.

[0062] In this embodiment, a pressure sensor 60 is used to collect the pressure signal on the surface of the syringe filter 20 in a timely manner, thereby determining whether the syringe filter 20 is working properly. Specifically, if the syringe filter 20 becomes clogged, the surface pressure may increase abnormally; conversely, if the syringe filter 20 is damaged, the surface pressure may decrease abnormally. Therefore, in this embodiment, a printed circuit board or a microcontroller system can be used as the control component 50. When the control component 50 receives an abnormal pressure signal, it immediately sends a stop command to the motor 43 to terminate the filtration process, preventing unfiltered samples from mixing into the filtered samples. This not only improves the effectiveness of the detection but also serves as a protective device.

[0063] For example Figure 4As shown, in another embodiment of this invention, the injection sample filtering device includes an alarm component 70, which is electrically connected to the control component 50; the alarm component 70 includes any one of an indicator light, a buzzer, and a vibrator.

[0064] In this embodiment, an alarm signal is emitted by an alarm component 70 to remind the operator, so that the operator can promptly detect abnormalities in the filtering process, take remedial action quickly, or quickly terminate the filtering process to avoid wasting time on meaningless work.

[0065] It should be noted that the alarm component 70 disclosed in this embodiment can trigger an alarm through vision, hearing or touch. However, this embodiment is only an example of the type of alarm component 70. The scope of protection of this utility model is not limited to this. Other types of alarm components 70, as long as they can achieve the technical effect disclosed in this application, can be used as equivalent replacements for the concept of this utility model and should also be within the scope of protection of this application.

[0066] In summary, this application discloses an injection-type sample filtration device, comprising a fixed base 10, a syringe filter 20, a syringe 30, and a driving component 40. The fixed base 10 has a first platform 11 and a second platform 12 arranged from bottom to top. The first platform 11 is used to place a sample collection container 80. The syringe filter 20 is disposed on the second platform 12. The syringe filter 20 has an inlet at its top and an outlet at its bottom. The syringe 30 is disposed on the fixed base 10, located above the second platform 12. The outlet of the syringe 30 is connected to the inlet. The driving component 40 is disposed on the fixed base 10. The driving component 40 is connected to the push rod 31 of the syringe 30 and is used to push the push rod 31 up and down. By stabilizing both the syringe 30 and the syringe filter 20 on the fixed base 10, and using the drive component 40 to push the push rod 31 of the syringe 30, an automated filtration operation is achieved, which improves the efficiency and stability of filtration, replaces manual operation, avoids the influence of uncertainties caused by manual operation, facilitates the rapid acquisition of filtered samples, and improves work efficiency.

[0067] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0068] It should be noted that this utility model uses an injection sample filtering device as an example to introduce the specific structure and working principle of the utility model, but the application of this utility model is not limited to injection sample filtering devices, and can also be applied to the detection and use of other similar workpieces.

[0069] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection-type sample filtration device, characterized in that, include: A fixing base, wherein a first platform and a second platform are provided on the fixing base from bottom to top, and the first platform is used to place a sample collection container; A syringe filter is provided on the second platform; the syringe filter has an inlet at the top and an outlet at the bottom. A syringe is mounted on the fixed base, located above the second platform; the syringe outlet is connected to the liquid inlet. A driving component is provided on the fixed base; the driving component is connected to the plunger of the syringe and is used to push the plunger up and down.

2. The injection-type sample filtration device according to claim 1, characterized in that, The driving component includes: A bracket is provided on the fixed base; a first support plate and a second support plate are arranged parallel to each other on the bracket, with the first support plate located above the second support plate; and the first support plate is provided with a first mounting hole, and the second support plate is provided with a second mounting hole at a position directly opposite the first mounting hole. One end of the lead screw is inserted into the first mounting hole, and the other end is inserted into the second mounting hole; A motor is mounted on the bracket; the output shaft of the motor is connected to the lead screw drive. A pressure plate is sleeved on the lead screw and engages with the lead screw; the pressure plate extends above the push rod and is used to abut against the push rod.

3. The injection-type sample filtration device according to claim 2, characterized in that, The driving component includes a guide rod, which is disposed between the first support plate and the second support plate and is parallel to the lead screw; the pressure plate is provided with a clearance hole for inserting the guide rod.

4. The injection-type sample filtration device according to claim 2, characterized in that, The injection sample filtration device includes a control component and a pressure sensor. The pressure sensor is mounted on the second platform and is used to monitor the pressure on the syringe filter. The control component is electrically connected to the pressure sensor and the motor.

5. The injection-type sample filtering device according to claim 4, characterized in that, The injection sample filtration device includes an alarm component, which is electrically connected to the control component. The alarm component includes any one of an indicator light, a buzzer, and a vibrator.

6. The injection-type sample filtering device according to claim 1, characterized in that, The second platform is provided with a first channel, and a support step is provided on the side wall of the first channel. The support step is used to support the syringe filter.

7. The injection-type sample filtration device according to claim 6, characterized in that, The mounting base is provided with a third platform that extends above the second platform; and a second channel is provided on the third platform directly opposite the first channel, and the syringe is detachably disposed in the second channel.

8. The injection-type sample filtration device according to claim 7, characterized in that, The fixed base is provided with a longitudinally extending slide rod; the second platform is slidably disposed on the slide rod, and / or the third platform is slidably disposed on the slide rod.

9. The injection-type sample filtration device according to claim 7, characterized in that, The syringe-type filter is provided in multiple ways, and the multiple syringe-type filters are arranged at intervals on the second platform; The syringe is provided in multiple locations, and the multiple syringes are arranged at intervals on the third platform.

10. The injection-type sample filtration device according to any one of claims 1 to 9, characterized in that, The mounting base is provided with a sample tube rack, which includes multiple side-by-side receiving slots for placing the sample collection container.

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