Polytetrafluoroethylene suction filtration cup with spiral fixed filter membrane

Abstract

The utility model provides a polytetrafluoroethylene suction filtration cup with a spiral fixed filter membrane, which relates to the technical field of suction filtration cups and comprises a filter bottle, and a filter head is movably sleeved on the outer surface wall of the filter bottle. According to the filter cup disclosed by the utility model, before the filter cup is used, the metal net gasket and the filter membrane main body are firstly put into the inserting groove, and then the filter cup main body and the filter membrane main body can be fixed under the action of the internal thread and the external thread; the base, the filter membrane main body and the filter cup main body can be directly fed into drying equipment for drying and constant-weight weighing, the filter membrane can be fixed through the threads through the structure and the method, and the filter cup and the filter membrane can be directly dried together after suction filtration and are constant in weight, so that the filter membrane is prevented from being taken out for the second time; therefore, the damage of the filter membrane is avoided, the operation steps are simplified, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of suction filter cups, in particular to a suction filter cup made of polytetrafluoroethylene with a spiral fixed filter membrane. Background Art

[0002] Suction filtration, also known as reduced pressure filtration or vacuum filtration, refers to a method of using a vacuum pump to reduce the pressure in the suction filtration bottle to achieve the purpose of solid-liquid separation. This method is often used in chemical and biological testing. The test liquid is sent into a funnel with a filter membrane, and then the pressure in the funnel is reduced to separate water and solids.

[0003] In the prior art, when the filter cup is in use, a filter membrane needs to be loaded before filtration and then removed after filtration is completed. This is cumbersome to operate and increases labor costs. In addition, when using tweezers to remove the filter membrane, the filter membrane may be scrapped or damaged due to improper operation. Utility Model Content

[0004] The utility model mainly provides a polytetrafluoroethylene material suction filter cup with a spirally fixed filter membrane, which is easy to operate and reduces labor costs, and prevents the filter membrane from being damaged when the filter membrane is removed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a polytetrafluoroethylene filter cup with a spirally fixed filter membrane, comprising a filter bottle, an outer wall of the filter bottle is movably sleeved with a filter head, a base is arranged on the top of the filter head, an insertion groove is provided on the top of the base, a metal mesh gasket is provided on the bottom of the inner wall of the insertion groove, a filter membrane body is arranged on the top of the metal mesh gasket, an inner surface wall of the insertion groove is provided with an internal thread, a filter cup body is movably inserted on the inner surface wall of the insertion groove, an outer wall of the filter cup body is provided with an external thread, and the inner surface wall of the base is connected to the outer surface wall of the filter cup body by threads, and a top cover is arranged on the top of the filter cup body. During use, the filter membrane body and the filter cup body can be fixed by the action of the internal and external threads, so that subsequent operations can be more convenient.

[0006] Preferably, the output end of the filter head is fixedly connected to a hose, and the output end of the hose is fixedly connected to a filter. During use, the liquid can be filtered under the action of the filter and the hose.

[0007] Preferably, the inner surface wall of the filter head is provided with a sealing ring, and during use, the sealing performance of the filter head can be ensured under the action of the sealing ring, thereby improving the filtration effect.

[0008] Preferably, the inner surface wall of the filter head is provided with a dustproof ring, and the outer surface walls of the sealing ring and the dustproof ring are in close contact with the outer surface wall of the filter bottle. The dustproof ring can prevent external dust and impurities from entering the interior of the filter head, thereby improving the effect of liquid filtration.

[0009] Preferably, two first fixing plates are arranged on one side of the outer wall of the filter head, and a group of embedding grooves are opened on the top of the two first fixing plates, which can play a limiting role under the action of the embedding grooves.

[0010] Preferably, a second fixing plate is movably inserted between the inner surface walls of the two groups of embedded grooves, a limiting spring is arranged between the two second fixing plates and the outer surface wall of the first fixing plate, and a base and a filter head are arranged between the outer surface walls of the first fixing plate and the second fixing plate, so that the second fixing plate can be fixed by the action of the embedded groove, and the first fixing plate and the second fixing plate can be stretched by the action of the limiting spring.

[0011] Preferably, the filter cup body and the base are both made of polytetrafluoroethylene material, which has good high temperature resistance and corrosion resistance, and can make the filter cup body and the base lighter.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, before use, the metal mesh gasket and the filter membrane body are first placed in the insertion groove, and then the filter cup body and the filter membrane body can be fixed by the action of the internal thread and the external thread, and then the top cover is taken out from the top of the filter cup body and the liquid is sent into the filter cup body, and then the liquid is filtered by the action of the suction filtration device. After the filtration is completed, the base, the filter membrane body and the filter cup body can be directly sent to the drying equipment for drying and constant weighing. The above structure and method can fix the filter membrane by the thread, and after the filtration is completed, the filter cup and the filter membrane can be directly dried together and constant weight can be achieved, thereby avoiding the secondary removal of the filter membrane, thereby avoiding damage to the filter membrane, simplifying the operation steps and reducing labor costs.

[0014] 2. In the utility model, after the filter membrane body is installed and fixed, the first fixing plate and the second fixing plate are separated by the help of the staff, and then inserted into the outer wall of the base and the filter head, so as to fix the filter head and the base. After the fixation is completed, the liquid can be filtered by the action of the filter machine and the hose, and the filtered liquid can be collected by the filter bottle. During the filtration process, the sealing ring and the dustproof ring can prevent external dust and impurities from entering the device, thereby improving the accuracy of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main structural stereogram of a polytetrafluoroethylene filter cup with a spiral fixed filter membrane;

[0016] Figure 2 This is a cross-sectional view of the main structure of a polytetrafluoroethylene filter cup with a spiral fixed filter membrane proposed by the utility model;

[0017] Figure 3 This is a split diagram of the main structure of a polytetrafluoroethylene filter cup with a spiral fixed filter membrane proposed by the utility model;

[0018] Figure 4 The utility model provides a split stereoscopic diagram of the main structural part of a polytetrafluoroethylene filter cup with a spiral fixed filter membrane.

[0019] Legend: 1. Filter bottle; 2. Filter head; 3. Hose; 4. Filter; 5. Sealing ring; 6. Dust ring; 7. Base; 8. Insertion slot; 9. Metal mesh gasket; 10. Filter membrane body; 11. Internal thread; 12. Filter cup body; 13. External thread; 14. Top cover; 15. First fixing plate; 16. Embedded slot; 17. Second fixing plate; 18. Limit spring. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] See also Figure 1-Figure 4 The utility model provides a polytetrafluoroethylene filter cup with a spiral fixed filter membrane, comprising a filter bottle 1, a filter head 2 is movably sleeved on the outer wall of the filter bottle 1, a base 7 is arranged on the top of the filter head 2, an insertion groove 8 is provided on the top of the base 7, a metal mesh gasket 9 is provided on the bottom of the inner wall of the insertion groove 8, a filter membrane body 10 is arranged on the top of the metal mesh gasket 9, an inner thread 11 is provided on the inner wall of the insertion groove 8, a filter cup body 12 is movably inserted on the inner wall of the insertion groove 8, an outer wall of the filter cup body 12 is provided with an outer thread 13, and the inner wall of the base 7 is connected to the outer wall of the filter cup body 12 through threads, and a top cover 14 is arranged on the top of the filter cup body 12.

[0023] like Figure 1 , Figure 2 As shown: the output end of the filter head 2 is fixedly connected to a hose 3, and the output end of the hose 3 is fixedly connected to a filter 4. During use, the liquid can be filtered under the action of the filter 4 and the hose 3.

[0024] like Figure 1 , Figure 2 As shown: the inner surface wall of the filter head 2 is provided with a sealing ring 5. During use, the sealing performance of the filter head 2 can be ensured under the action of the sealing ring 5, thereby improving the filtration effect.

[0025] like Figure 1 , Figure 2 As shown: the inner surface wall of the filter head 2 is provided with a dustproof ring 6, and the outer surface walls of the sealing ring 5 and the dustproof ring 6 are in close contact with the outer surface wall of the filter bottle 1. The dustproof ring 6 can prevent external dust and impurities from entering the interior of the filter head 2, thereby improving the effect of liquid filtration.

[0026] like Figure 1-Figure 3 As shown, two first fixing plates 15 are arranged on one side of the outer wall of the filter head 2, and a group of embedding grooves 16 are opened on the top of the two first fixing plates 15, which can play a limiting role under the action of the embedding grooves 16.

[0027] like Figure 1-Figure 3 As shown: a second fixing plate 17 is movably inserted between the inner surface walls of the two groups of embedded grooves 16, a limiting spring 18 is arranged between the two second fixing plates 17 and the outer surface wall of the first fixing plate 15, and a base 7 and a filter head 2 are arranged between the outer surface walls of the first fixing plate 15 and the second fixing plate 17. The second fixing plate 17 can be fixed by the action of the embedded grooves 16, and the first fixing plate 15 and the second fixing plate 17 can be stretched by the action of the limiting spring 18.

[0028] like Figure 1-Figure 4 As shown: the filter cup body 12 and the base 7 are both made of polytetrafluoroethylene material, which has good high temperature resistance and corrosion resistance, and can make the filter cup body 12 and the base 7 lighter.

[0029] The method of use and working principle of the device: when in use, first put the metal mesh gasket 9 and the filter membrane body 10 into the insertion groove 8, and then fix the filter cup body 12 and the filter membrane body 10 by the action of the internal thread 11 and the external thread 13, and then separate the first fixing plate 15 and the second fixing plate 17 by the action of the staff, and then insert them into the outer wall of the base 7 and the filter head 2, so as to fix the filter head 2 and the base 7, then take out the top cover 14 from the top of the filter cup body 12 and send the liquid into the filter cup body 12, and filter the liquid by the action of the filter 4 and the hose 3, and collect the filtered liquid by the filter bottle 1, and prevent external dust and impurities from entering the device by the action of the sealing ring 5 and the dustproof ring 6 during the filtration process, so as to complete the filtration of the liquid.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A polytetrafluoroethylene filter cup with a spiral fixed filter membrane, characterized in that: The invention comprises a filter bottle (1), wherein the outer wall of the filter bottle (1) is movably sleeved with a filter head (2), the top of the filter head (2) is provided with a base (7), the top of the base (7) is provided with an insertion groove (8), the bottom of the inner wall of the insertion groove (8) is provided with a metal mesh gasket (9), the top of the metal mesh gasket (9) is provided with a filter membrane body (10), the inner wall of the insertion groove (8) is provided with an internal thread (11), the inner wall of the insertion groove (8) is movably provided with a filter cup body (12), the outer wall of the filter cup body (12) is provided with an external thread (13), the inner wall of the base (7) is connected to the outer wall of the filter cup body (12) by threads, the top of the filter cup body (12) is provided with a top cover (14), the filter head (2) is provided with a The output end is fixedly connected to a hose (3), and the output end of the hose (3) is fixedly connected to a filter (4). The inner surface wall of the filter head (2) is provided with a sealing ring (5). One side of the outer wall of the filter head (2) is provided with two first fixing plates (15). The tops of the two first fixing plates (15) are each provided with a group of embedding grooves (16). A second fixing plate (17) is movably inserted between the inner surface walls of the two groups of embedding grooves (16). A limit spring (18) is provided between the two second fixing plates (17) and the outer surface wall of the first fixing plate (15). A base (7) and the filter head (2) are provided between the outer surfaces of the first fixing plate (15) and the second fixing plate (17). The filter cup body (12) and the base (7) are both made of polytetrafluoroethylene material.

2. A polytetrafluoroethylene filter cup with a spiral fixed filter membrane according to claim 1, characterized in that: The inner surface wall of the filter head (2) is provided with a dustproof ring (6), and the outer surfaces of the sealing ring (5) and the dustproof ring (6) are in close contact with the outer surface wall of the filter bottle (1).

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