A laboratory filtration device

Abstract

The utility model relates to filter equipment technical field, concretely is a kind of laboratory filter device, it solves the problem mentioned in above background art, including liquid storage tube, extruding seat, annular fixing frame is fixedly connected with the outer wall in the lower part of liquid storage tube, rotary connection is limited ring piece on annular fixing frame, liquid storage tube can be inserted into extruding seat, and filter paper is installed between the two, and a plurality of connecting assemblies that can be inserted into annular fixing frame are fixedly connected with the end surface of extruding seat, and connecting assembly can be fixed by rotating limiting ring piece, by inserting rod insertion into limiting hole, then by rotating limiting ring piece, make limiting plate enter the insertion hole of inserting rod, and to its outward, to realize the connection of liquid storage tube and extruding seat, can prevent separation of liquid storage tube and extruding seat when extracting solution, improve convenience, and prevent solution from spilling, avoid waste.

Description

Technical Field

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

[0002] Filtration is a crucial part of high school chemistry experiments, and the commonly used filtration instrument is the ordinary funnel. However, ordinary funnels are slow and inefficient, which can affect the pace of experimental classes. In physics experiments, filtration is frequently required to extract the filtrate. Current filtration materials typically use funnels, relying solely on gravity to slowly pass the liquid through a filter screen or filter paper. This method is slow, cumbersome, and usually uses a single filter screen. The filtered residue is difficult to remove separately, and the filter paper is prone to deformation, leading to leakage and even re-mixing with the filtrate, thus affecting the filtration efficiency.

[0003] A search revealed a Chinese patent (publication number: CN222033800U) that discloses a pressurized filtration device. This invention uses a piston rod and piston head mounted movably in a filter cartridge with an insulated jacket to increase pressure, thereby improving the filtration effect and speed. Furthermore, by setting a liquid outlet at the bottom of the device and a liquid replenishment pipe on the side wall of the filter cartridge, and controlling the opening and closing of a valve, the device can achieve continuous filtration. This device can complete the filtration of large quantities of liquid in a short time. The overall device also adopts a closed design, which can effectively isolate the liquid to be filtered. Moreover, the components are low-cost, easy to promote, and suitable for filtering various types of liquids.

[0004] When the above-mentioned device draws the filter solution into the filter cartridge through the replenishment pipe interface, because there is filter paper sandwiched between the base and the filter cartridge, one hand needs to hold the base and the filter cartridge tightly at the same time. Pulling the piston rod moves the piston head in the filter cartridge and increases the pressure in the filter cartridge so that the filter solution can be drawn in through the replenishment pipe interface. During this process, the piston head will exert an outward force on the filter cartridge, which can easily cause the base held in hand to separate from the filter cartridge, resulting in leakage of the filter cartridge and waste of the filter solution. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a laboratory filtration device that solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a laboratory filtration device, comprising a liquid storage tube and a squeezing seat, an annular fixing frame fixedly connected to the lower outer wall of the liquid storage tube, a limiting ring rotatably connected to the annular fixing frame, the liquid storage tube being inserted into the squeezing seat, and filter paper being installed between the two, and multiple connecting components that can be inserted into the annular fixing frame being fixedly connected to the end face of the squeezing seat, and the connecting components being fixed by rotating the limiting ring.

[0009] Furthermore, a force-applying component is installed on the liquid storage tube, and an inlet tube is fixedly connected to the lower side wall.

[0010] Furthermore, the annular fixing frame includes an annular block, the side wall of which has an annular groove, and multiple limiting holes are formed on the annular block.

[0011] Furthermore, the connecting component includes a plug rod that passes through a limiting hole, and the plug rod has a insertion hole on its side wall.

[0012] Furthermore, the limiting ring component includes an annular piece, a limiting plate with multiple through holes connected to the side of the annular piece, and multiple levers fixedly connected to the side wall of the annular piece.

[0013] Furthermore, the force-applying component includes a connecting rod, one end of which is fixedly connected to a push handle, and the other end is fitted with a piston placed in a liquid storage cylinder.

[0014] Furthermore, a drain plate with through holes is fixedly connected to the squeezing seat, and a drain pipe is fixedly connected to the bottom of the squeezing seat.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a laboratory filtration device with the following advantages:

[0017] This laboratory filtration device involves inserting a rod into a limiting hole, and then rotating a limiting ring to allow a limiting plate to enter the rod's insertion hole and point outwards, thereby connecting the liquid storage tube to the squeezing seat. This prevents the liquid storage tube from separating from the squeezing seat when extracting the solution, improving convenience and preventing solution spillage, thus avoiding waste. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the extrusion seat, connecting assembly, and drain pipe in this utility model;

[0021] Figure 4This is a cross-sectional view of the liquid storage tube, the annular fixing frame, and the liquid inlet tube in this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the filter paper in this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the limiting component in this utility model.

[0024] In the diagram: 1. Liquid storage tube; 2. Annular fixing frame; 3. Limiting ring; 4. Squeezing seat; 5. Connecting assembly; 6. Force application assembly; 7. Filter paper; 8. Liquid inlet tube; 9. Annular block; 10. Limiting hole; 11. Annular groove; 12. Annular plate; 13. Limiting plate; 14. Paddle plate; 15. Drain tube; 16. Connecting rod; 17. Piston; 18. Push handle; 19. Leaking plate; 20. Insert rod; 21. Insertion hole. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-6 The present invention discloses a laboratory filtration device, comprising a liquid storage tube 1 and a squeezing seat 4. A liquid inlet tube 8 is fixedly connected to the lower side wall of the liquid storage tube 1. A first connecting pipe is connected to the liquid inlet tube 8, and a first valve is installed on the first connecting pipe. The diameter of the lower outer wall of the liquid storage tube 1 gradually decreases from top to bottom. An annular fixing frame 2 is fixedly connected to the lower outer wall of the liquid storage tube 1. The annular fixing frame 2 includes an annular block 9, which is fixedly connected to the liquid storage tube 1. An annular groove 11 is opened on the side wall of the annular block 9, and multiple vertically penetrating limiting holes 10 are opened on the annular block 9.

[0027] The top of the squeezing seat 4 has a slot for inserting the liquid storage tube 1. Filter paper 7 is placed between the squeezing seat 4 and the liquid storage tube 1. A drain plate 19 with through holes is fixedly connected to the middle of the squeezing seat 4 to support the filter paper 7. A drain pipe 15 connected to the slot is fixedly connected to the bottom of the squeezing seat 4. A second connecting pipe is connected to the drain pipe 15, and a second valve is installed on the second connecting pipe.

[0028] The top end face of the compression seat 4 is fixedly connected with multiple connecting components 5 that match the limiting hole 10. The connecting component 5 includes a rod 20, which can pass through the limiting hole 10, and the side wall of the rod 20 has a hole 21.

[0029] A limiting ring 3 is installed on the annular groove 11 of the annular fixing frame 2. The limiting ring 3 includes an annular piece 12, which is placed in the annular groove 11 and can rotate. A plurality of limiting plates 13 with through holes 21 are connected to the side of the annular piece 12, and a plurality of lever plates 14 are also fixedly connected to the side wall of the annular piece 12.

[0030] When assembling the device, place the filter paper 7 above the drain plate 19 of the squeezing seat 4, and then insert the rod 20 into the limiting hole 10. By rotating the dial plate 14, the limiting plate 13 enters the insertion hole 21, so that the limiting plate 13 limits the rod 20, thereby realizing the connection and fixation between the liquid storage tube 1 and the squeezing seat 4.

[0031] A force-applying component 6 is installed on the liquid storage tube 1. The force-applying component 6 includes a connecting rod 16. One end of the connecting rod 16 is fixedly connected to a push handle 18, and the other end is equipped with a piston 17 made of rubber and placed in the liquid storage cylinder.

[0032] In summary, when using this laboratory filtration device, the first connecting tube is placed in the solution, the first valve is opened, the second connecting tube is placed in the collection container, the second valve is closed, and the piston 17 is slid in the storage tube 1 by pulling the push handle 18, which creates a negative pressure inside the piston, allowing the solution to be drawn into the storage tube 1 along the first connecting tube.

[0033] When filtering the solution, the first valve is closed and the second valve is opened. By pushing the push handle 18, the solution passes through the filter paper 7 and the through hole, and then flows out into the collection container along the second connecting pipe, thereby achieving filtration.

[0034] During this process, the experimenter can hold the liquid storage tube 1 by hand. As the limiting plate 13 enters the insertion hole 21, the liquid storage tube 1 is connected to the squeezing seat 4. This prevents the liquid storage tube 1 from separating from the squeezing seat 4 when extracting or filtering the solution, which not only improves the convenience of use but also prevents personnel operation errors.

[0035] 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 claims and their equivalents.

Claims

1. A laboratory filtration device, comprising a liquid storage tube (1) and a squeezing seat (4), characterized in that: The lower outer wall of the liquid storage tube (1) is fixedly connected to an annular fixing frame (2), and a limiting ring (3) is rotatably connected to the annular fixing frame (2). The liquid storage tube (1) can be inserted into the squeezing seat (4), and a filter paper (7) is installed between the two. The end face of the squeezing seat (4) is fixedly connected to a plurality of connecting components (5) that can be inserted into the annular fixing frame (2), and the connecting components (5) can be fixed by rotating the limiting ring (3).

2. The laboratory filtration device according to claim 1, characterized in that: The liquid storage tube (1) is equipped with a force application component (6), and the lower side wall is fixedly connected to an inlet tube (8).

3. A laboratory filtration device according to claim 1, characterized in that: The annular fixing frame (2) includes an annular block (9), the side wall of the annular block (9) has an annular groove (11), and the annular block (9) has multiple limiting holes (10).

4. A laboratory filtration device according to claim 3, characterized in that: The connecting component (5) includes a plug (20) that passes through the limiting hole (10) and has a plug hole (21) on its side wall.

5. A laboratory filtration device according to claim 4, characterized in that: The limiting ring (3) includes an annular piece (12), and the side of the annular piece (12) is connected with a plurality of limiting plates (13) that penetrate the insertion hole (21). The side wall of the annular piece (12) is also fixedly connected with a plurality of levers (14).

6. A laboratory filtration device according to claim 2, characterized in that: The force application component (6) includes a connecting rod (16), one end of which is fixedly connected to a push handle (18), and the other end is fitted with a piston (17) placed in the liquid storage tube (1).

7. A laboratory filtration device according to claim 1, characterized in that: A drain plate (19) with through holes is fixedly connected in the squeezing seat (4), and a drain pipe (15) is fixedly connected to the bottom of the squeezing seat (4).

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