Viscous liquid filtering device

Abstract

The utility model relates to the technical field of detection devices, and discloses a viscous liquid filtering device which comprises a support, the support is sequentially provided with a pressurizing mechanism, a sample injection mechanism, a filtering piece and a receiving piece from top to bottom, the sample injection mechanism and the filtering piece are communicated in a sealed mode, and the support comprises an upper support and a lower support which are detachably connected. The sample introduction mechanism and the pressurization mechanism are detachably arranged on the upper support, the filtering piece and the receiving piece are detachably arranged on the lower support, and the pressurization mechanism can drive viscous liquid in the sample introduction mechanism to enter the receiving piece through the filtering piece. According to the technical scheme, the viscous liquid is placed in the sample introduction mechanism, the sample introduction mechanism is in sealed communication with the filtering part, the viscous liquid is pressurized from the sample introduction mechanism through the pressurization mechanism and is introduced into the filtering part to be filtered, the time needed by filtering is greatly shortened, filtering is more sufficient, and the filtering effect is good. The support can be vertically separated, so that the pressurizing mechanism, the filtering piece and the receiving piece are convenient to install and replace.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and specifically to a viscous liquid filtration device. Background Technology

[0002] The separation principle of chromatography is that different components of the sample interact with the stationary phase in the mobile phase of the chromatographic column through adsorption, partitioning ion attraction, exclusion, and affinity. Due to the different magnitudes and strengths of these interactions, the residence times of various components in the stationary phase also differ, resulting in their sequential elution from the column and achieving separation. With the advancement of technology, chromatographic analytical instruments have played a vital role in various fields such as environmental protection and life sciences.

[0003] In routine testing, viscous samples or samples containing large particles can easily clog the chromatographic column, causing excessive system pressure, low column efficiency, peak tailing, broadening, column contamination, and ghost peaks. Therefore, the sample solution after pretreatment needs to be filtered through a filter membrane before being tested to protect the column. Syrup samples, in particular, are characterized by high viscosity and numerous solid particles. When testing these substances, even the supernatant after pretreatment remains highly viscous and contains large particles, requiring filtration to remove these solid particles before testing. Traditional filtration methods, such as guiding the viscous liquid onto a filter membrane, are time-consuming and often result in incomplete filtration. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of existing technologies where viscous liquids are filtered using traditional methods, which involve guiding the viscous liquid onto the filter membrane for filtration, resulting in long processing times and insufficient filtration.

[0005] To achieve the above objectives, this utility model provides a viscous liquid filtration device, including a support. The support is provided with a pressurizing mechanism, a sealed and connected sample injection mechanism and a filter element, and a receiving element, arranged sequentially from top to bottom. The support includes an upper support and a lower support that are detachably connected. The sample injection mechanism and the pressurizing mechanism are detachably mounted on the upper support, and the filter element and the receiving element are detachably mounted on the lower support. The pressurizing mechanism can drive the viscous liquid in the sample injection mechanism to pass through the filter element and enter the receiving element.

[0006] In some embodiments, the injection mechanism includes a cylinder, a piston, and a liquid outlet disposed at the lower end of the cylinder. The liquid outlet is sealed to a filter element, and the piston is sealed to the inner wall of the cylinder and can slide downward along the inner wall of the cylinder under the drive of the pressurizing mechanism to discharge viscous liquid through the liquid outlet.

[0007] In some embodiments, the piston is longer than the cylinder and includes a piston head and a piston rod. The piston rod is located above the piston head, the piston head is sealed to the inner wall of the cylinder, and a pressurizing mechanism is connected to the piston rod.

[0008] In some embodiments, the outer wall of the cylinder is provided with an outwardly protruding fixing block, the outer wall of the fixing block being rough and abutting against the inner wall of the upper support.

[0009] In some embodiments, the upper end of the upper bracket is provided with a horizontal first support plate, the pressure mechanism is provided on the first support plate and includes a screw and a driving member, the screw passes through the first support plate in a vertical direction and is screwed to the first support plate, the top of the screw is connected to the driving member and the bottom abuts against the piston, the screw can be driven by the driving member to rotate and push the piston downward.

[0010] In some embodiments, a fastener is provided at the connection between the upper bracket and the lower bracket. The fastener includes a magnetic buckle groove and a magnetic buckle protrusion that are disposed at the connection between the upper bracket and the lower bracket and match each other.

[0011] In some embodiments, the lower support is further provided with a horizontally arranged second support plate, which is located between the filter and the receiver and supports the filter below. The filter and the receiver are connected by a pipe, and the second support plate is provided with a through hole to allow the pipe to pass through.

[0012] In some embodiments, the filter element includes a housing and a filter membrane disposed in the housing. The housing includes an upper housing, a lower housing, and a side housing. An inlet tube is connected above the upper housing and is sealed to an inlet mechanism. An outlet tube is connected below the lower housing and is connected to a receiver.

[0013] In some embodiments, the bottom of the lower bracket is provided with a third support plate, the outer edge of the third support plate is provided with an upwardly protruding baffle, and the receiving member is placed on the inner side of the baffle on the third support plate.

[0014] In some embodiments, the cylinder and / or receiver are provided with scale lines.

[0015] Through the above technical solution, this application places the viscous liquid in the injection mechanism, and the injection mechanism is sealed and connected to the filter element. The viscous liquid is pressurized from the injection mechanism and passed into the filter element for filtration by the pressurizing mechanism, which greatly reduces the filtration time, makes the filtration more thorough, and improves the filtration effect. The support can be separated into upper and lower parts, which facilitates the installation and replacement of the pressurizing mechanism, filter element, and receiving element. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a viscous liquid filtration device according to an embodiment of the present invention;

[0017] Figure 2 This is a side view of the bracket in an embodiment of the present invention;

[0018] Figure 3 This is a top view of the support frame according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the filter element of this utility model without the side shell.

[0020] Explanation of reference numerals in the attached figures

[0021] 1. Bracket; 11. Upper bracket; 12. Lower bracket; 13. First support plate; 14. Second support plate; 15. Third support plate; 151. Edge retainer; 16. Fastener; 161. Magnetic buckle groove; 162. Magnetic buckle protrusion;

[0022] 2. Sample injection mechanism; 21. Cylinder; 22. Piston; 221. Piston head; 222. Piston rod; 23. Liquid outlet; 24. Fixing block;

[0023] 3. Pressurization mechanism; 31. Screw; 32. Drive component;

[0024] 4. Filter element; 41. Upper shell; 42. Lower shell; 43. Side shell; 44. Filter membrane; 45. Sample inlet tube; 46. Sample outlet tube; 5. Receiving element. Detailed Implementation

[0025] In this invention, unless otherwise stated, directional terms such as "up," "down," "left," "right," "inner," and "outer" are used 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. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] To address the problems of time-consuming and incomplete filtration of viscous liquids when using traditional methods to guide the liquid onto a filter membrane for filtration, this invention provides a viscous liquid filtration device, such as... Figure 1As shown, the viscous liquid filtration device includes a support 1. From top to bottom, the support 1 is equipped with a pressurizing mechanism 3, a sample inlet mechanism 2, a filter element 4, and a receiving element 5. The sample inlet mechanism 2, the filter element 4, and the receiving element 5 are sequentially connected, and the sample inlet mechanism 2 and the filter element 4 are sealed together. The support 1 includes a detachably connected upper support 11 and a lower support 12. The sample inlet mechanism 2 and the pressurizing mechanism 3 are detachably mounted on the upper support 11, and the filter element 4 and the receiving element 5 are detachably mounted on the lower support 12, facilitating the installation and replacement of each component. During filtration, the viscous liquid to be filtered is located in the sample inlet mechanism 2. The pressurizing mechanism 3 pressurizes the sample inlet mechanism 2. Because the sample inlet mechanism 2 is sealed to the filter element 4, the viscous liquid in the sample inlet mechanism 2 enters the filter element 4 for filtration under pressure. The filtrate filtered by the filter element 4 enters the receiving element 5, completing the entire filtration process. This technical solution significantly reduces the filtration time, achieves more thorough filtration, and provides better filtration results. Furthermore, the detachable nature of the support 1 facilitates the replacement of each component. Figure 1 As shown, the sample injection mechanism 2 includes a cylinder 21, a piston 22, and a liquid outlet 23 located at the lower end of the cylinder 21. The liquid outlet 23 is sealed and connected to the filter element 4, and the piston 22 is sealed and connected to the inner wall of the cylinder 21. During filtration, viscous liquid is loaded into the cylinder 21, and the piston 22 is placed inside the cylinder 21. Driven by the pressurizing mechanism 3, the piston 22 slides downward along the inner wall of the cylinder 21, pushing the viscous liquid in the cylinder 21 out of the liquid outlet 23 into the filter element 4.

[0027] In some embodiments, such as Figure 1 As shown, the length of piston 22 is greater than the length of cylinder 21. When piston 22 reaches the bottom of cylinder 21, it is convenient to remove piston 22 from cylinder 21 to facilitate the injection of viscous liquid into cylinder 21 for the next operation. Piston 22 includes piston head 221 and piston rod 222. Piston rod 222 is located above piston head 221. Piston head 221 is sealed to the inner wall of cylinder 21. Pressurization mechanism 3 is connected to piston rod 222, so that piston rod and piston head move downward synchronously to squeeze out viscous liquid.

[0028] In some embodiments, such as Figure 1 As shown, the outer wall of the cylinder 21 is provided with an outwardly protruding fixing block 24. The outer wall of the fixing block 24 is rough and abuts against the inner wall of the upper support 11. When the pressurizing mechanism 3 drives the piston 22 to move downward, the fixing block 24 is fixed to the upper support 11 by the clamping force of the upper support 11. Furthermore, a recess corresponding to the shape of the fixing block 24 can be provided at the connection between the upper support 11 and the fixing block 24. The fixing block 24 is engaged in the recess to provide support for the sample injection mechanism 2. Alternatively, the fixing block 24 can be omitted, and the outer wall of the cylinder 21 can be directly abutted against the inner wall of the upper support 11.

[0029] In some embodiments, the upper end of the upper bracket 11 is provided with a horizontal first support plate 13, and the pressurizing mechanism 3 is disposed on the first support plate 13, which provides support for the pressurizing mechanism 3. The pressurizing mechanism 3 includes a screw 31 and a drive member 32. The screw 31 passes through the first support plate 13 vertically and is screwed to the first support plate 13. The top of the screw 31 is connected to the drive member 32, and the bottom abuts against the top of the piston 22. The drive member 32 can drive the screw 31 to rotate, causing the screw 31 to move downward or upward. When the screw 31 moves downward, it pushes the piston 22 downward, squeezing the viscous liquid out of the cylinder 21; when the screw 31 moves upward, the pressurizing mechanism 3 returns to its initial position. Figure 1 As shown, the drive component 32 is a rod-shaped handwheel, but it can also be configured in any shape to facilitate the rotation of the screw 31. When the amount of viscous liquid to be filtered is large, a large-sized filter device can be installed, and the drive component can be a motor. The output end of the motor is connected to the screw 31, driving the screw 31 to rotate.

[0030] In some embodiments, a fastener 16 is provided at the connection between the upper bracket 11 and the lower bracket 12, thereby enabling a detachable connection between the upper bracket 11 and the lower bracket 12. The fastener 16 includes a magnetic snap groove 161 and a magnetic snap protrusion 162 that are disposed at the connection between the upper bracket 11 and the lower bracket 12 and match each other. Figure 2 and Figure 3 As shown, the lower end of the upper bracket 11 is provided with a magnetic buckle protrusion 162, and the upper end of the lower bracket 12 is provided with a magnetic buckle groove 161. The protrusion of the magnetic buckle protrusion 162 is adapted to the groove shape of the magnetic buckle groove 161, and they are tightly connected together by magnetism. The structure of the fastener 16 is not limited to the form of magnetic buckle groove and magnetic buckle protrusion. Alternatively, a fastening sleeve can be fitted at the connection between the upper bracket 11 and the lower bracket 12. The side wall of the fastening sleeve is provided with an opening, and a locking bolt is correspondingly set in the opening and threadedly connected to the fastening sleeve. The size of the fastening sleeve can be changed by the movement direction of the locking bolt along the opening, so that the fastening sleeve is fixed to the outside of the upper bracket 11 and the lower bracket 12, and the upper bracket 11 and the lower bracket 12 are fixed together; or the size of the fastening sleeve can be made larger than the outer diameter of the upper bracket 11 and the lower bracket 12, and can move along the length direction of the upper bracket 11 and the lower bracket 12, so that the upper bracket 11 and the lower bracket 12 can be separated.

[0031] In some embodiments, the lower support 12 is further provided with a horizontally arranged second support plate 14, which is located between the filter element 4 and the receiving element 5 and supports the filter element 4 from below. The filter element 4 and the receiving element 5 are connected by a pipe, and the second support plate 14 has through holes to allow the pipe to pass through. The main function of the second support plate 14 is to provide support for the filter element 4, making the entire filtration device more stable. If the second support plate 14 is not provided, and the pipe connecting the sample inlet mechanism 2, the filter element 4, and the receiving element 5 is set as a rigid pipe, the entire filtration device can also remain stable.

[0032] In some embodiments, such as Figure 1 and Figure 4 As shown, the filter element 4 includes a housing and a filter membrane 44 disposed within the housing. The housing includes an upper housing 41, a lower housing 42, and a side housing 43, with the connections between the housings being sealed. An inlet pipe 45 is connected to the upper housing 41, and the inlet pipe 45 is in sealed communication with the inlet mechanism 2. An outlet pipe 46 is connected to the lower housing 42, and the outlet pipe 46 is in communication with the receiving unit 5. During filtration, the inlet mechanism 2 is pressurized by the pressurizing mechanism 3. The discharged viscous liquid enters the housing through the inlet pipe 45. Under the pressure of the pressurizing mechanism 3, the viscous liquid quickly passes through the filter membrane 44 and is filtered. The filtered liquid is discharged into the receiving unit 5 through the outlet pipe 46. The filter membrane 44 can be an aqueous filter membrane or an organic filter membrane; the appropriate type of filter membrane can be selected according to the type of viscous liquid being filtered.

[0033] In some embodiments, such as Figure 1 As shown, the bottom of the lower support 12 is provided with a third support plate 15. The outer edge of the third support plate 15 is provided with an upwardly protruding baffle 151 to limit the position of the receiving component 5. The receiving component 5 is placed inside the baffle 151 on the third support plate 15. The receiving component 5 can be any container for receiving liquids, such as a container with an open top, or such as... Figure 1 The sample bottle shown has a top opening and is sealed to the sample tube 46.

[0034] In some embodiments, the cylinder 21 and / or the receiving member 5 are provided with scale lines for measuring the volume of viscous liquid and filtrate.

[0035] The following example, using a linear liquid as the adhesive sample, injection mechanism 2 as a syringe, and receiving component 5 as a chromatograph sample vial, illustrates the working process of this viscous liquid filtration device in detail:

[0036] Select a 2mL disposable syringe, a 1.5mL liquid chromatograph sample vial, and a filter element 4 with an inner diameter of 13mm. The filter membrane 44 is an aqueous filter membrane with a pore size of 0.22μm. Connect the pressurizing mechanism 3, the disposable syringe, the filter element 4, and the liquid chromatograph sample vial to the support 1 in sequence. The lower end of the sample outlet tube 46 is inserted into the liquid chromatograph sample vial.

[0037] Weigh 1.02g of the adhesive sample, add 10mL of methanol, and ultrasonically extract for 10min, then let it stand for 10min. Use a 2mL disposable syringe to draw in 1.5mL of the supernatant, and seal the syringe outlet 23 to the injection tube 45. Drive the screw 31 via the drive unit 32 to rotate, pushing the syringe piston 22 downwards, allowing the viscous liquid to pass into the filter element 4. The viscous liquid is filtered through the filter membrane 44 and then enters the chromatograph injection bottle through the sample outlet tube 46. With this filtration device, approximately 1mL of filtrate can be collected in 30 seconds, significantly accelerating the filtration speed. After collecting the filtrate in the HPLC injection bottle, separate the magnetic locking groove 161 and magnetic locking protrusion 162 of the upper support 11 and lower support 12, separate the disposable syringe from the filter element 4, and remove the sample outlet tube 46 from the HPLC injection bottle. Remove the disposable syringe, filter element 4, and HPLC injection bottle, and the HPLC injection bottle can then be used for testing. Since all components are disposable, after each operation, replace the disposable syringe, filter 4, and liquid chromatograph injection bottle with new disposable syringes and install them on the bracket 1 for a new round of filtration.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A viscous liquid filtration device, characterized in that, The device includes a support (1), which is provided with a pressurizing mechanism (3), a sealed and connected sample injection mechanism (2), a filter element (4), and a receiving element (5) from top to bottom. The support (1) includes an upper support (11) and a lower support (12) that are detachably connected. The sample injection mechanism (2) and the pressurizing mechanism (3) are detachably mounted on the upper support (11), and the filter element (4) and the receiving element (5) are detachably mounted on the lower support (12). The pressurizing mechanism (3) can drive the viscous liquid in the sample injection mechanism (2) through the filter element (4) and into the receiving element (5).

2. The viscous liquid filtration device according to claim 1, characterized in that, The sample injection mechanism (2) includes a cylinder (21), a piston (22), and a liquid outlet (23) located at the lower end of the cylinder (21). The liquid outlet (23) is sealed and connected to the filter element (4). The piston (22) is sealed and connected to the inner wall of the cylinder (21) and can slide downward along the inner wall of the cylinder (21) under the drive of the pressurizing mechanism (3) so that the viscous liquid is discharged through the liquid outlet (23).

3. The viscous liquid filtration device according to claim 2, characterized in that, The piston (22) is longer than the cylinder (21) and includes a piston head (221) and a piston rod (222). The piston rod (222) is located above the piston head (221). The piston head (221) is sealed to the inner wall of the cylinder (21). The pressurizing mechanism (3) is connected to the piston rod (222).

4. The viscous liquid filtration device according to claim 2, characterized in that, The outer wall of the cylinder (21) is provided with an outwardly protruding fixing block (24), the outer wall of the fixing block (24) is rough and abuts against the inner wall of the upper support (11).

5. The viscous liquid filtration device according to claim 2, characterized in that, The upper end of the upper bracket (11) is provided with a horizontal first support plate (13). The pressurizing mechanism (3) is provided on the first support plate (13) and includes a screw (31) and a driving member (32). The screw (31) passes through the first support plate (13) in the vertical direction and is screwed to the first support plate (13). The top of the screw (31) is connected to the driving member (32) and the bottom abuts against the piston (22). The screw (31) can be driven by the driving member (32) to rotate and push the piston (22) downward.

6. The viscous liquid filtration device according to claim 1, characterized in that, The connection between the upper bracket (11) and the lower bracket (12) is provided with a fastener (16), the fastener (16) including a magnetic buckle groove (161) and a magnetic buckle protrusion (162) that are provided at the connection between the upper bracket (11) and the lower bracket (12) and match each other.

7. The viscous liquid filtration device according to claim 1, characterized in that, The lower support (12) is also provided with a horizontally arranged second support plate (14). The second support plate (14) is located between the filter element (4) and the receiver (5) and is supported below the filter element (4). The filter element (4) and the receiver (5) are connected by a pipe. The second support plate (14) is provided with a through hole to allow the pipe to pass through.

8. The viscous liquid filtration device according to claim 1, characterized in that, The filter element (4) includes a housing and a filter membrane (44) disposed in the housing. The housing includes an upper housing (41), a lower housing (42), and a side housing (43). An inlet tube (45) is connected above the upper housing (41) and is sealed to the inlet mechanism (2). An outlet tube (46) is connected below the lower housing (42) and is connected to the receiver (5).

9. The viscous liquid filtration device according to claim 1, characterized in that, The bottom of the lower support (12) is provided with a third support plate (15), and the outer edge of the third support plate (15) is provided with an upwardly protruding baffle (151). The receiving member (5) is placed on the inner side of the baffle (151) on the third support plate (15).

10. The viscous liquid filtration device according to claim 2, characterized in that, The cylinder (21) and / or the receiving component (5) are provided with scale lines.

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