Feeding device with inert gas input and suction filtration device

Abstract

The utility model discloses a feeding device with inert gas input and a suction filtration device, the feeding device comprises a barrel, a feeding pipe and a gas filling pipe, and the bottom of the barrel is open; the feeding pipe and the gas filling pipe penetrate through the top of the cylinder and extend into the cylinder, the end, located on the outer side of the cylinder, of the feeding pipe is connected with an external feeding device, and a feeding hole is formed in the end, located on the inner side of the cylinder, of the feeding pipe; the end, located outside the barrel, of the gas filling pipe is connected with an inert gas input device, and the end, located inside the barrel, of the gas filling pipe is provided with a gas filling hole. The feeding pipe is used for adding feed liquid or flushing liquid, the gas adding pipe is used for introducing inert gas, and the feed liquid is uniformly dispersed in the filter cup through the feeding hole under the protection of nitrogen, so that the surface of a substance to be subjected to suction filtration is flatly accumulated in the filter cup, the suction filtration effect is enhanced, and meanwhile, the suction filtration material is isolated from air to play a role in protection.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, and more specifically to a feeding device and a suction filtering device with inert gas input. Background Art

[0002] The suction funnel is a commonly used filtration device in laboratories, usually used for the physical separation of mixtures of solid and liquid substances.

[0003] However, the filtration funnel of the filtration device in the prior art is of open design, one end of which is connected to a vacuum pump and the other end is directly connected to a holding device for the mixed liquid to be filtered. For some special filtered substances, such as substances that may deteriorate after contact with oxygen, water, etc. in the air, the use of the filtration device in the prior art often leads to an increase in solid impurities after filtration.

[0004] Therefore, it is an urgent problem for those skilled in the art to provide a feeding device and a filtration device that can perform filtration operation while protecting the material to be filtered when using the filtration device. Utility Model Content

[0005] In view of this, the utility model provides a feeding device and a filtration device with inert gas input, which has a simple structure, and the feeding and inert gas are uniform and sufficient, thereby improving the material protection effect and the filtration effect.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A feeding device with inert gas input comprises a cylinder, a feeding pipe and a gas filling pipe, wherein the bottom of the cylinder is open; the feeding pipe and the gas filling pipe are both arranged through the top of the cylinder and extend into the interior of the cylinder, the end of the feeding pipe located outside the cylinder is connected to an external feeding device, and the end of the feeding pipe located inside the cylinder is provided with a feeding hole; the end of the gas filling pipe located outside the cylinder is connected to an inert gas input device, and the end of the gas filling pipe located inside the cylinder is provided with a gas filling hole.

[0008] Furthermore, the cylinder body includes a cover plate and a side wall plate which is arranged radially along the cover plate and connected as a whole, and the feeding pipe and the gas adding pipe are both arranged on the cover plate.

[0009] Furthermore, the feeding pipe is vertically arranged at the center of the cover plate.

[0010] Furthermore, the gas filling pipe includes a first gas filling pipe and a second gas filling pipe which are connected to each other, and the first gas filling pipe is arranged parallel to the feeding pipe; the second gas filling pipe is an annular coil, and the second gas filling pipe is arranged parallel to the cover plate, and the gas filling hole is arranged on the second gas filling pipe and faces the opening side of the cylinder.

[0011] Furthermore, the second gas adding pipe is arranged around the outer periphery of the feeding hole, and the second gas adding pipe is lower than the feeding hole in the radial direction of the cylinder.

[0012] A suction filtration device comprises a suction filtration funnel and a suction filtration bottle, and also comprises a feeding device with inert gas input as described above, which is arranged inside the suction filtration funnel.

[0013] It can be seen from this that the utility model discloses a feeding device and a filtration device with inert gas input. Compared with the prior art, when performing filtration operation, the utility model can, on the one hand, evenly feed the material, maintain the surface flatness of the solid to be filtered, and improve the filtration effect; on the other hand, the annular tube also passes inert gas, which can isolate the material to be filtered from the air, avoid long-term contact with the air to produce impurities, and protect the filtered material. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 The accompanying drawing is a main cross-sectional view of a feeding device with inert gas input provided by the utility model;

[0016] Figure 2 The accompanying drawing is a top view of a feeding device with inert gas input provided by the utility model;

[0017] Figure 3 The accompanying drawing is a structural schematic diagram of a suction filtration device provided by the utility model;

[0018] Figure 4 The attached figure is an exploded view of a suction filtration device provided by the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-2 As shown, the embodiment of the utility model discloses a feeding device with inert gas input, including a cylinder 31, a feeding pipe 32 and a nitrogen inlet pipe 33. The bottom of the cylinder 31 is open; the feeding pipe 32 and the gas filling pipe 33 are both arranged through the top of the cylinder 31 and extend to the inside of the cylinder 31, the end of the feeding pipe 32 located on the outside of the cylinder 31 is connected to the external feeding device, the end of the feeding pipe 32 located on the inside of the cylinder 31 is provided with a feeding hole 321, the end of the nitrogen inlet pipe located on the outside of the cylinder 31 is connected to the gas filling device, and the end of the gas filling pipe 33 located on the inside of the cylinder 31 is provided with an inlet hole 3321.

[0021] Specifically, the cylinder 31 includes a cover plate 311 and a side wall plate 312 . The side wall plate 312 is radially arranged along the cover plate 311 and connected as a whole. The cylinder 31 is a hollow structure. The feeding pipe 32 and the gas feeding pipe 33 are both fixed on the cover plate 311 .

[0022] Specifically, the feeding pipe 32 is located at the center of the cover plate 311. After being connected to the external feeding port, the material enters the feeding pipe 32 and is ejected from the feeding hole 321, and can evenly enter the suction filtration funnel, so that the material to be filtered is evenly distributed inside the funnel; the gas-filling pipe 33 includes a first gas-filling pipe 331 and a second gas-filling pipe 332. The first gas-filling pipe 331 is arranged in parallel with the feeding pipe 32 and is perpendicular to the cover plate 311. The second gas-filling pipe 332 is an annular coil, which is connected to the first gas-filling pipe 331 and is arranged in parallel with the cover plate 311. The gas-filling hole 3321 is arranged at The second gas filling pipe 332 is on the open side of the cylinder 31; when the gas filling pipe 33 is connected to the external inert gas input device, the inert gas enters the inner side of the cylinder 31 from the gas filling pipe 33 located on the outer side of the cylinder 31, and the coil-type arrangement allows the inert gas to evenly fill the entire inner side of the cylinder 31 starting from the top of the cylinder 31, so that when the filtration operation is performed, the cylinder 31 is filled with inert gas, thereby protecting the material to be filtered from the air, preventing the material to be filtered from being disturbed by water or oxygen in the air, and increasing the impurity content in the material to be filtered.

[0023] In order to further optimize the technical solution of the utility model, the second gas filling pipe 332 is arranged in a ring around the feeding hole 321, and the second gas filling pipe 332 is lower than the feeding hole 321 in the radial direction of the cylinder 31. The inert gas output by the second gas filling pipe 332 can be protected when the material is sprayed out from the feeding hole 321. The gas filling hole 3321 is arranged on the second gas filling pipe 332 and faces the opening side of the cylinder 31, so that the feeding hole 321 will not be blocked when the material is sprayed.

[0024] When a charging device with inert gas input is used, such as Figure 3-4 As shown, the filtration funnel 2 is arranged above the filtration bottle 1, and the feeding device 3 with inert gas input is placed inside the filtration funnel 2, and the filtration bottle 1 is connected to the external vacuum pumping device. The input inert gas can be nitrogen, helium, etc., which is input by the external gas-filling device, enters the second gas-filling pipe 332 through the first gas-filling pipe 331, and outputs into the cylinder 31 through the access hole 3321. The inert gas is input for a period of time to ensure that the cylinder 31 is isolated from the outside environment. After that, the external feeding device adds the material to be filtered into the feeding pipe 32, and the material to be filtered is sprayed into the filtration funnel through the feeding hole 321. With the input of the material to be filtered and nitrogen, the vacuum pumping device discharges the gas in the filtration bottle 1, and the material to be filtered is separated into solid and liquid to achieve the filtering effect.

[0025] More specifically, when performing vacuum filtration, a feeding device 3 with an inert gas is placed in the filtration funnel 2, the vacuum is turned on, and nitrogen is first introduced through the gas pipe 33 to replace the air therein. After the replacement is completed, feeding into the feeding pipe 32 is started. At this time, the nitrogen introduction amount is controlled to be 10-60L / min, which is balanced with the discharge amount of the filtered liquid to achieve air pressure stability. The feed liquid is evenly dispersed in the filtration funnel 2 under the protection of nitrogen through the feeding hole 321, so that the surface of the material to be filtered is accumulated in the filtration funnel 2 with a flat surface, so that the filtration effect is enhanced, and the filtered material is isolated from the air and protected. After the filtration of the feed liquid is completed, washing liquid is added to wash the filter cake and vacuum-dried.

[0026] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A feeding device with inert gas input, characterized in that: It includes a cylinder, a feeding pipe and a gas filling pipe, wherein the bottom of the cylinder is open; the feeding pipe and the gas filling pipe are both arranged through the top of the cylinder and extend to the inside of the cylinder, the end of the feeding pipe located outside the cylinder is connected to an external feeding device, and the end of the feeding pipe located inside the cylinder is provided with a feeding hole; the end of the gas filling pipe located outside the cylinder is connected to an inert gas input device, and the end of the gas filling pipe located inside the cylinder is provided with a gas filling hole.

2. A feeding device with inert gas input according to claim 1, characterized in that: The cylinder body comprises a cover plate and a side wall plate which is arranged radially along the cover plate and connected as an integral whole. The feeding pipe and the gas adding pipe are both arranged on the cover plate.

3. A feeding device with inert gas input according to claim 2, characterized in that: The feeding pipe is vertically arranged at the center of the cover plate.

4. A feeding device with inert gas input according to claim 3, characterized in that: The gas filling pipe includes a first gas filling pipe and a second gas filling pipe which are connected to each other, the first gas filling pipe is arranged in parallel with the feeding pipe; the second gas filling pipe is an annular coil, the second gas filling pipe is arranged in parallel with the cover plate, and the gas filling hole is arranged on the second gas filling pipe and faces the opening side of the cylinder.

5. A feeding device with inert gas input according to claim 4, characterized in that: The second gas adding pipe is arranged around the outer periphery of the feeding hole, and the second gas adding pipe is lower than the feeding hole in the radial direction of the cylinder.

6. A suction filtration device, comprising a suction filtration funnel and a suction filtration bottle, characterized in that: It also comprises a feeding device with inert gas input as claimed in any one of claims 1 to 5, which is arranged inside the suction filtration funnel.

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