Aseptic check membrane filter

Abstract

The utility model discloses a sterile examination film filter relates to film filter technical field. Including base plate, assembly component, be located below the front side of base plate, be used for fixing film filter on desktop to avoid the relative sliding of both. The utility model discloses the cooperation between pressing plate and T -shaped column, vertical frame, realizes the close fixing of equipment and operating desktop, and the rotation knob drives the pressing plate to go up, and cooperate with the clamping desktop of base plate, avoid the relative sliding phenomenon of the work process caused by direct prevention, ensure the stable equipment of the operation personnel sample addition, adjusting valve and so on operation time, reduce the risk of liquid medicine spilling, guarantee the continuous smooth of aseptic examination process, improve work efficiency, at the same time, the fixed mode does not need to punch or stick, adapts to the desktop of a variety of material of laboratory, and the disassembly transfer is convenient, and the flexibility is strong.

Description

Technical Field

[0001] This utility model relates to the field of membrane filter technology, specifically to a sterile inspection membrane filter. Background Technology

[0002] The membrane filter is a dual-purpose sterile membrane filter for testing, which is applicable to both culture methods. It is rationally designed, and the filter part is made of glass, which has stable chemical properties, strong sealing, and effectively prevents exogenous contamination, ensuring the success rate of bacterial testing.

[0003] Workers typically need to place the membrane filter directly on the table to work, rather than fixing it to the table. Doing so causes the membrane filter to slide relative to the table when the worker is using it, which is inconvenient for the worker to work normally, delays the worker's work time, and reduces the worker's work efficiency. Therefore, a sterile inspection membrane filter is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a sterile inspection membrane filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sterile inspection membrane filter, comprising: a substrate, The assembly assembly, located on the front side below the substrate, is used to fix the thin film filter to the tabletop to prevent relative sliding between the two. The assembly includes a vertical frame located on the left and right sides of the top of the substrate. A T-shaped groove is opened downward at the top of the vertical frame, which cooperates with a T-shaped post. The T-shaped post is located at the bottom of the support, so that the membrane filter can slide relative to the vertical frame. A baffle plate is provided on the inner side of the vertical frame to limit its vertical movement.

[0006] Furthermore, a horizontal plate is provided on the front side of the bottom of the substrate, and vertical plates are arranged horizontally on the bottom back side of the horizontal plate. A screw and a round rod are respectively provided between the vertical plates and the substrate. A pressure plate is provided on the outside of the screw and the round rod. One end of the screw is connected to a knob.

[0007] Furthermore, a bracket is provided at the top of the T-shaped column, and a drain pipe is provided inside the bracket, with one end of the drain pipe connected to a hose connector.

[0008] Furthermore, the drain pipe has horizontally arranged branch pipes, each branch pipe is equipped with a valve, an interface is provided on the outside of the branch pipe, and a conduit is provided on the inside of the interface.

[0009] Furthermore, the outside of the conduit is provided with a stand, the top of the inner wall of the stand is provided with a filter bucket, the inner wall of the filter bucket is provided with a filter plate, the top of the filter plate is provided with a glass jar, and the top of the glass jar is provided with a top cover.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This sterile testing membrane filter utilizes the cooperation between the pressure plate, T-shaped column, and vertical frame to achieve a tight fixation between the equipment and the operating table. Rotating the knob moves the pressure plate upward, which, in conjunction with the base plate, clamps the table, avoiding relative slippage during operation caused by direct contact. This ensures equipment stability during operations such as sample addition and valve adjustment, reduces the risk of drug spillage, guarantees a continuous and smooth sterile testing process, and improves work efficiency. At the same time, the fixing method requires no drilling or adhesive, is compatible with various laboratory tabletop materials, and is easy to disassemble and move, offering high flexibility. Attached Figure Description

[0011] Figure 1 This is a front view of the three-dimensional structure of this utility model; Figure 2 This is a rear view schematic diagram of the three-dimensional structure of this utility model; Figure 3 This is a schematic cross-sectional view of the vertical frame of this utility model; Figure 4 This is a schematic cross-sectional view of the top cover of this utility model.

[0012] In the diagram: 1. Base plate; 2. Assembly components; 201. Vertical plate; 202. Pressure plate; 203. Knob; 204. Round rod; 205. Screw; 206. T-shaped column; 207. Vertical frame; 208. Baffle plate; 209. Horizontal plate; 3. Top cover; 4. Support; 5. Hose connector; 6. Drain pipe; 7. Branch pipe; 8. Valve; 9. Vertical frame; 10. Filter hopper; 11. Guide tube; 12. Glass jar; 13. Filter sheet; 14. Interface. Detailed Implementation

[0013] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only for descriptive distinction and should not be construed as indicating or implying relative importance. All electrical components mentioned in this document are electrically connected to an external main controller and 220V AC mains power, and the main controller can be a conventionally known device such as a computer that provides control.

[0015] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model 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 utility model.

[0016] like Figures 1-4 As shown, this utility model provides a technical solution: a sterile inspection membrane filter, including a substrate 1. The surface of the substrate 1 is polished, which has corrosion resistance and easy cleaning characteristics, and can avoid drug residue contamination. A strip anti-slip rubber pad is attached to the bottom of the substrate 1, which can initially enhance the friction with the table. At the same time, the assembly component 2 is integrated on the lower front side to realize the stability of the equipment and the table. It is compatible with common laboratory table materials such as wood and stone.

[0017] like Figures 1-4 As shown in the embodiment of this application, the assembly component 2 includes a vertical frame 207, which is located on the left and right sides of the top of the substrate 1. A T-shaped groove is formed downwards at the top of the vertical frame 207, which cooperates with a T-shaped post 206. The T-shaped post 206 is located at the bottom of the support 4, allowing the membrane filter to slide relative to the vertical frame 207. A baffle plate 208 is provided inside the vertical frame 207 for vertical positioning. Specifically, vertical frames 207 are symmetrically welded to the left and right sides of the top of the substrate 1. The vertical frame 207 is a rectangular steel plate with a downward-facing T-shaped groove (not separately labeled in the figure) at the top, allowing the filter to slide within the T-shaped groove. The filter is equipped with a T-shaped column, and a bracket 4 is welded to the top of the T-shaped column. The bracket 4 is used to support the filter body. The operator can push the bracket 4 to make the T-shaped column slide horizontally along the T-shaped groove to connect the filter with the substrate 1. A baffle 208 is slidably arranged inside the vertical frame 207. The size of the groove where the baffle 208 is located is larger than the size of the T-shaped column 206. Therefore, the baffle 208 can limit the position of the T-shaped column 206 in the vertical frame 207, thereby realizing the connection between the filter and the substrate 1. The baffle 208 is used to limit the displacement of the T-shaped column and prevent the bracket 4 from sliding relative to the vertical frame 207, which would cause the equipment to tip over.

[0018] like Figures 1-4 As shown in the embodiment of this application, a horizontal plate 209 is provided on the front bottom side of the substrate 1, and vertical plates 201 are arranged horizontally on the bottom back side of the horizontal plate 209. A screw 205 and a round rod 204 are respectively provided between the vertical plate 201 and the substrate 1. A pressure plate 202 is provided on the outside of the screw 205 and the round rod 204. One end of the screw 205 is connected to a knob 203. Specifically, a horizontal plate 209 is fixedly connected to the front bottom side of the substrate 1, and the horizontal plate 209 is perpendicularly connected to the substrate 1. Three sets of vertical plates 201 are arranged horizontally on the bottom of the horizontal plate 209. A round rod 204 is fixedly provided between the vertical plates 201 on the left and right sides and the substrate 1. The vertical plate 201 in the middle is fixedly connected to the substrate 1. A screw 205 is rotatably mounted on the device. One end of the screw 205 passes through the vertical plate 201 and is connected to the knob 203. A round rod 204 is used to guide the pressure plate 202. The round rod 204 and the screw 205 are both fitted with the pressure plate 202. The pressure plate 202 is threaded to the screw 205 and slidably connected to the round rod 204. When the knob 203 is rotated clockwise, the knob 203 uses the screw 205 to drive the pressure plate 202 to move along the round rod 204 towards the tabletop until the pressure plate 202 is tightly fitted to the bottom of the tabletop, forming a "clamp-like" fixation, thereby preventing the device from sliding relative to the tabletop. Rotating the knob 203 in the opposite direction will release the pressure plate 202, making it easy to move the device.

[0019] like Figures 1-4 As shown in the embodiment of this application, a bracket 4 is provided on the top of the T-shaped column 206, and a drain pipe 6 is provided on the inner side of the bracket 4. One end of the drain pipe 6 is connected to a hose connector 5. Specifically, a vertical groove is provided on the bracket 4, which is used as a handle to facilitate the operator to move the bracket 4. The drain pipe 6 is a transparent polytetrafluoroethylene tube, which is corrosion resistant and facilitates observation of the liquid flow. One end is connected to a hose connector 5 by a thread, which can be connected to a waste liquid collection tank or other diversion device.

[0020] like Figures 1-4As shown in the embodiment of this application, branch pipes 7 are arranged horizontally on the drain pipe 6. A valve 8 is installed on each branch pipe 7. An interface 14 is provided on the outside of the branch pipe 7. A conduit 11 is provided inside the interface 14. A support frame 9 is provided outside the conduit 11. A filter funnel 10 is provided at the top of the inner wall of the support frame 9. A filter sheet 13 is provided on the inner wall of the filter funnel 10. A glass jar 12 is provided on the top of the filter sheet 13. A top cover 3 is provided above the glass jar 12. Specifically, five sets of branch pipes 7 are arranged horizontally along the length of the drain pipe 6. 7 is vertically connected to the drain pipe 6. Each branch pipe 7 is equipped with a valve 8 (PTFE shut-off valve), which can independently control the opening and closing of a single branch pipe 7, enabling simultaneous filtration of multiple samples or individual operation. The end of the branch pipe 7 furthest from the drain pipe 6 has an interface 14, which is a green-tipped interface 14. A conduit 11 is screwed into the inside of the interface 14, and the other end of the conduit 11 extends to the bottom of the filter funnel 10, ensuring that the filtered liquid is completely introduced into the branch pipe 7 to avoid residue. A vertical sleeve is fitted over the conduit 11. The frame 9 (stainless steel circular frame, 8cm in diameter, 5cm in height) is fixed to the outer wall of the filter hopper 10 by clips. The inner wall of the filter hopper 10 has an annular protrusion in the middle, on which a filter plate 13 (pore size selectable 0.22μm or 0.45μm, material is mixed cellulose ester or polyethersulfone, meeting the sterility requirements of the Chinese Pharmacopoeia) is placed. The diameter of the filter plate 13 is adapted to the inner diameter of the filter hopper 10 to ensure that all liquid passes through the filter plate 13 without sideflow. A glass jar 12 is placed on top of the filter plate 13. Made of high borosilicate glass, with a volume of 500mL and graduations, it is used to hold samples to be filtered. The glass jar 12 has a threaded top cover 3, which is threaded to the outer surface of the stand 9. The inner wall of the top cover 3 matches the outer surface of the glass jar 12. The top cover 3 has a sample dispensing hole in the center, and a sealing plug is provided at the sample dispensing hole (the sample dispensing hole and sealing plug are existing technologies and will not be described in detail here). It can accommodate pipette tips or pipettes to be inserted, while preventing microorganisms and dust in the outside air from falling into the sample and causing contamination.

[0021] The working principle of this utility model is as follows: The filter is connected to the base plate 1 and the operating table using assembly component 2. Rotating knob 203 causes screw 205 to move pressure plate 202 upwards along rod 204, thus achieving a tight connection between base plate 1 and the operating table. Then, the T-shaped post 206 at the bottom of bracket 4 is slid into the vertical frame 207 and limited by baffle 208, ensuring stable placement of the filter. Afterwards, the sealing of each component is checked, and the filter hopper 10, glass jar 12, conduit 11, and filter sheet 13 are subjected to moist heat sterilization. After cooling, they are assembled, and the filter sheet 13 is placed on the convex part of filter hopper 10. On the table, place the glass jar 12 above the filter 13, tighten the top cover 3, and tighten the interface 14 between the conduit 11 and the branch tube 7. Use a sterile pipette to draw up the test solution and inject it into the glass jar 12 through the sample application hole of the top cover 3. Be careful to avoid spilling the solution and contaminating the outer wall of the filter hopper 10. Slowly open the valve 8 of the corresponding branch tube 7. The solution flows into the filter hopper 10 under the action of gravity. After the filter 13 traps microorganisms, it enters the drain pipe 6 through the conduit 11 and the branch tube 7, and finally flows into the sterile waste liquid tank through the hose connector 5. During the filtration process, the flow rate can be adjusted by the valve 8 to avoid the filter 13 from breaking due to excessive flow rate.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A sterility checking membrane filter comprising: A substrate, characterized in that: The assembly component is located below the front side of the substrate and is used for fixing the membrane filter on the desktop to avoid relative sliding between the two; The assembly component comprises vertical supports which are located on the left and right sides of the top end of the substrate, the top of the vertical support is provided with a T-shaped slot which is matched with a T-shaped column, the T-shaped column is arranged on the bottom of the bracket, and the membrane filter can slide along the vertical support, the inner side of the vertical support is provided with a blocking plate which is used for vertical limiting.

2. A sterile inspecting membrane filter according to claim 1, characterized in that: The bottom of the substrate is provided with a horizontal plate, the back side of the horizontal plate is transversely arranged with vertical plates, the vertical plates and the substrate are respectively provided with screw rods and round rods, the screw rods and the round rods are jointly provided with a pressing plate outside, and one end of the screw rod is connected with a knob.

3. A sterile inspecting membrane filter according to claim 1, characterized in that: The top of the T-shaped column is provided with a bracket, the inner side of the bracket is provided with a drainage pipe, and one end of the drainage pipe is connected with a hose joint.

4. A sterile inspecting membrane filter according to claim 3, characterized in that: The drainage pipe is transversely arranged with branch pipes, the branch pipes are provided with valves, the branch pipes are provided with interfaces outside, and the interfaces are provided with guide pipes inside.

5. A sterile inspecting membrane filter according to claim 4, characterized in that: The guide pipe is provided with a vertical support outside, the inner wall of the vertical support is provided with a filter hopper at the top, the inner wall of the filter hopper is provided with a filter piece, the top of the filter piece is provided with a glass jar, and the top of the glass jar is provided with a top cover.

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