Multi-linkage suction filtration device for laboratory

Abstract

The utility model provides a multi-linkage suction filtration device for a laboratory. The multi-linkage suction filtration device comprises a support frame, a plurality of groups of suction filtration cup bodies and a plurality of groups of filter funnels, wherein a plurality of placing holes are formed in the upper frame body at the top of the support frame at intervals; a plurality of suction filtration cup bodies are arranged in the corresponding placing holes in a sealing manner, and suction holes formed in the side walls of the upper ends of the suction filtration cup bodies are communicated with external vacuum equipment through an inner cavity of the upper frame body. The linkage suction filtration device can synchronously realize linkage suction filtration of a plurality of filter funnels, so that the suction filtration efficiency is greatly improved; the suction filtration device is simple in structural design, convenient to operate, suitable for various small-scale suction filtration operations, and particularly suitable for small-scale multi-sample suction filtration operations in the fields of chemical engineering, biology, pharmacy and the like.

Description

Technical Field

[0001] The utility model relates to a suction filtration device, in particular to a multi-linkage suction filtration device for laboratory use. Background Art

[0002] In laboratory research, filtration is a commonly used separation and purification technology, mainly used for solid-liquid separation, liquid clarification, sterilization, impurity removal, etc. The main technical principle is to use a vacuum pump to increase the negative pressure in the filtration bottle, thereby achieving a unit operation for solid-liquid separation. Traditional laboratory filtration devices all use a single filtration bottle, round filter paper and Büchner funnel, and are equipped with a one-to-one vacuum pump. During operation, the filter paper is loaded into the funnel, the filter paper is close to the inner wall of the funnel, and then the sample to be filtered is poured into the Büchner funnel, and then the vacuum pump is started to achieve the purpose of solid-liquid separation under the action of negative pressure.

[0003] However, current filtration devices can usually only process a single sample, and the processing process is relatively cumbersome, resulting in low filtration efficiency. Especially when processing multiple small-sized samples, repeated replacement is required, which increases the complexity and time cost of experimental operations and seriously reduces the detection efficiency. Therefore, it is of great practical value to develop a filtration device that can simultaneously process multiple small-sized samples. Utility Model Content

[0004] The utility model aims at the above technical defects of the existing experimental filtration devices and provides a laboratory multi-link filtration device which can process multiple small-sized samples at the same time.

[0005] The utility model adopts the following technical solutions to solve the above technical problems:

[0006] A multi-linked filtration device for laboratory use comprises a support frame and a plurality of groups of filtration cup bodies and filter funnels; wherein, a plurality of placement holes are arranged at intervals on an upper frame body at the top of the support frame; a plurality of the filtration cup bodies are sealedly arranged in the corresponding placement holes, and the air extraction holes opened on the side walls of the upper ends thereof are connected with an external vacuum device through the inner cavity of the upper frame body.

[0007] Preferably, the support frame comprises a lower frame body, support columns and an upper frame body, wherein: the upper frame body is erected above the lower frame body through a plurality of support columns, and the upper frame body is a disc-shaped structure with a hollow inner cavity.

[0008] More preferably, the lower frame is a disc-shaped structure with a hollow inner cavity, which is connected to the upper frame above through the hollow tubular support column.

[0009] More preferably, an air supply pipe is provided on the lower frame and / or the upper frame, and the outer end of the air supply pipe is connected to an external vacuum device.

[0010] More preferably, the lower frame body is coaxially arranged with the upper frame body, and the diameter of the lower frame body is smaller than the diameter of the upper frame body.

[0011] More preferably, there are at least two support columns, which are arranged in a centrally symmetrical manner; and the placement holes are arranged on the upper frame at equal intervals.

[0012] Preferably, the lower frame, air supply pipe, support column and upper frame are made of stainless steel or aluminum alloy.

[0013] Preferably, the suction filter cup body is a cylindrical structure with an opening at the top, and a sealing sleeve is provided on the outer periphery of the upper end thereof, and the sealing sleeve is sealed and connected to the upper and lower openings of the placement hole.

[0014] Preferably, the lower end of the filter funnel is an inverted cone structure, in which a filter plate is arranged, and the bottom of the filter funnel can be sealed and connected to the filter cup body through a sealing gasket.

[0015] Preferably, the laboratory multi-linked filtration device further comprises a plurality of sealing plugs, each of which has a handle on the top, and both the upper and lower ends of the sealing plugs can be sealed and connected to the upper and lower openings of the placement hole.

[0016] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0017] The multi-linked filtration device for laboratory use provided by the utility model greatly improves the filtration efficiency by providing a plurality of placement holes for installing filtration cup bodies on a support frame, and synchronously realizing the linked filtration of a plurality of filter funnels by using the same support frame; and can be matched with a plurality of sealing plugs, and the number of linked filtration of the filter funnels can be flexibly selected according to needs, and the operation is simple and flexible to use; and the multi-linked filtration device has a simple structural design and is easy to operate, and is suitable for various small-scale filtration operations, especially for small-scale filtration operations of multiple samples in the fields of chemical, biological, and pharmaceutical industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a multi-linked filtration device for laboratory use according to the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of a multi-linked filtration device for laboratory use in the utility model. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a multi-linked filtration device for laboratory use in the utility model. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the explosion structure of a multi-linked filtration device for laboratory use according to the utility model;

[0022] Figure 5 This is a three-dimensional structural schematic diagram of a support frame in a multi-linked filtration device for laboratory use according to the utility model;

[0023] Figure 6 This is a schematic cross-sectional view of a support frame in a multi-linked filtration device for laboratory use according to the utility model;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of a suction filtration cup in a multi-link suction filtration device for laboratory use according to the utility model;

[0025] Figure 8 The utility model is a three-dimensional structural schematic diagram of a filter funnel in a multi-linked filtration device for laboratory use. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0028] In some embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a multi-linked filtration device for laboratory use is provided which can process multiple small-sized samples at the same time. The device mainly includes a support frame 100 and several groups of filtration cup bodies 200 and filter funnels 300. The filter funnels 300 are sealed and mounted on the filtration cup bodies 200, and the two are used in combination.

[0029] Specifically, the main technical solution of the filtration device is to adopt a support frame 100 with a specific structural design, and to provide a plurality of placement holes 105 on an upper frame body 104 at the top of the support frame 100 at intervals, and a plurality of filtration cup bodies 200 are sealed in the corresponding placement holes 105. Multiple groups of filtration cup bodies 200 and filter funnels 300 can be placed simultaneously through the placement holes 105, thereby realizing the linked filtration of multiple samples.

[0030] It is worth noting that the upper frame 104 used has an inner cavity structure, and is installed in the filter cup body 200 of each placement hole 105. The exhaust hole 201 opened on the upper side wall of the placement hole 105 is located in the inner cavity position of the upper frame 104, and the inner cavity of the upper frame 104 is connected to the external vacuum equipment to form a sealed negative pressure passage.

[0031] In some of the embodiments, Figure 5 and Figure 6 As shown, the support frame 100 includes a lower frame 101, a support column 103 and an upper frame 104. The lower frame 101 and the upper frame 104 are connected to each other through the support column 103 as an integral structure, and the connection method is screw connection or welding connection. As needed, an air supply pipe 102 can be provided on the lower frame 101 and / or the upper frame 104, and the outer end of the air supply pipe 102 is connected to an external vacuum device.

[0032] As a preferred embodiment, the upper frame 104 is welded to the upper position of the lower frame 101 through a plurality of support columns 103, and the upper frame 104 is a disc-shaped structure with a hollow inner cavity. An air supply pipe is directly arranged on the upper frame 104, and the air supply pipe is arranged on the side wall or the bottom of the upper frame 104, one end of which is connected to the inner cavity of the upper frame 104, and the other end is connected to an external vacuum device through a hose.

[0033] As another preferred embodiment, the lower frame 101 and the upper frame 104 both adopt a disc-shaped structure with a hollow inner cavity, and the support column 103 adopts a hollow tubular structure. The inner cavity of the lower frame 101 and the upper frame 104 are connected through the hollow lower frame 101 and the support column 103. Thus, the air supply pipe 102 is moved down and installed on the lower frame 101 at the bottom, making the structural layout more reasonable.

[0034] like Figure 5 As shown, the lower frame 101 and the upper frame 104 are both disc-shaped, and are coaxially arranged, and the diameter of the lower frame 101 is smaller than the diameter of the upper frame 104. A plurality of suction cups 200 are sealed and mounted on the corresponding placement holes 105, and each suction cup 200 is placed at the top of the lower frame 101.

[0035] In some embodiments, there are at least two support columns 103, which are arranged symmetrically; and the placement holes 105 are arranged on the upper frame 104 at equal intervals. Figure 5 As shown, there are three support columns 103 arranged in a triangle, so that the connection structure between the lower frame 101 and the upper frame 104 is more stable. Five placement holes 105 are evenly spaced along the circumference of the upper frame 104, and a placement hole 105 is opened at the center to fully utilize the spatial position of the upper frame 104 and improve the filtration efficiency.

[0036] In some of the embodiments, the lower frame 101, the air supply pipe 102, the support column 103 and the upper frame 104 are made of stainless steel or aluminum alloy, are welded to each other, and have a stable structure, are resistant to acid and alkali, are corrosion-resistant, and have a long service life.

[0037] In some of the embodiments, Figure 4 and Figure 7 As shown, different from the existing suction filtration bottle, the suction filtration cup body 200 used in the device is a cylindrical structure with an open top, and the suction filtration cup body 200 is made of glass.

[0038] In order to ensure the sealing of the connection between it and the lower frame 101 when it is installed in the placement hole 105, a sealing sleeve 202 can be provided on the outer periphery of the upper end of the filtration cup body 200 as needed to ensure that the sealing sleeve 202 is sealed and connected to the upper and lower openings of the placement hole 105 to avoid air leakage during the filtration process.

[0039] In some of the embodiments, Figure 4 and Figure 8 As shown, the filter funnel 300 can directly adopt a conventional laboratory funnel, and the lower end of the funnel is an inverted cone structure, in which a filter plate 301 is arranged. In order to ensure the sealing of the filter funnel 300 and the top opening of the suction filtration cup body 200, the outer peripheral wall of the filter funnel 300 and the top opening of the suction filtration cup body 200 are frosted, which has good sealing performance, and the frosted design not only increases the friction force, making the fit between the filter funnel 300 and the suction filtration cup body 200 tighter, but also has a certain anti-slip effect.

[0040] In addition, in order to meet the filtration requirements of different sample quantities, the device also includes a plurality of sealing plugs 400, and the upper and lower ends of the sealing plugs 400 can be sealed and connected to the upper and lower openings of the placement hole 105. A handle is provided on the top of the sealing plug 400 for easy access. When in use, the sealing plug 400 is used to block the placement hole 105 where no filtration is performed to prevent air leakage.

[0041] The method of using the multi-linked filtration device for the laboratory is as follows: first, select a suitable filter membrane or filter paper, and select the material and pore size according to the properties of the solution and the requirements of the filtration accuracy. Then assemble the filtration device, place the filter membrane in the filter funnel 300, and then put the entire filter into the lower filter cup 200. After the combination of multiple groups of filter funnels 300 and the filter cup 200 is completed, they are placed one by one in each placement hole 105 of the lower frame 101, and the redundant placement holes 105 are blocked with sealing plugs 400. Then connect the vacuum pump to the lower frame 101 through a hose. Turn on the power of the vacuum pump for filtration.

[0042] The laboratory multi-link filtration device adopts the above scheme, which can perform linkage filtration on multiple samples at the same time, greatly improving the filtration efficiency. It has a simple structure and is easy to operate. It is suitable for various small-scale filtration operations, especially small-scale multi-sample filtration operations in the fields of chemical, biological, and pharmaceutical industries.

[0043] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0044] Secondly, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0045] Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-linked filtration device for laboratory use, characterized in that: It includes a support frame and several groups of suction cup bodies and filter funnels; wherein, a plurality of placement holes are spaced apart on the upper frame body at the top of the support frame; a plurality of the suction cup bodies are sealed in the corresponding placement holes, and the suction holes opened on the upper side walls thereof are connected with the external vacuum equipment through the inner cavity of the upper frame body.

2. The laboratory multi-link filtration device according to claim 1, characterized in that: The support frame includes a lower frame body, support columns and an upper frame body, wherein: the upper frame body is erected above the lower frame body through a plurality of support columns, and the upper frame body is a disc-shaped structure with a hollow inner cavity.

3. The laboratory multi-link filtration device according to claim 2, characterized in that: The lower frame is a disc-shaped structure with a hollow inner cavity, and is connected to the upper frame through the hollow tubular support column.

4. The laboratory multi-link filtration device according to claim 2, characterized in that: The lower frame and / or the upper frame are provided with an air supply pipe, and the outer end of the air supply pipe is connected to an external vacuum device.

5. The laboratory multi-link filtration device according to claim 2, characterized in that: The lower frame body is coaxially arranged with the upper frame body, and the diameter of the lower frame body is smaller than the diameter of the upper frame body.

6. The laboratory multi-link filtration device according to claim 2, characterized in that: There are at least two support columns, which are arranged in a centrally symmetrical manner; and the placement holes are arranged on the upper frame at equal intervals.

7. The laboratory multi-link filtration device according to claim 2, characterized in that: The lower frame, air supply pipe, support column and upper frame are made of stainless steel or aluminum alloy.

8. The laboratory multi-link filtration device according to claim 1, characterized in that: The suction filter cup body is a cylindrical structure with an opening at the top, and a sealing sleeve is provided on the outer periphery of the upper end thereof, and the sealing sleeve is sealed and connected with the upper and lower openings of the placement hole.

9. The laboratory multi-link filtration device according to claim 1, characterized in that: The lower end of the filter funnel is an inverted cone structure, in which a filter plate is arranged, and the bottom of the filter funnel can be sealed and connected to the filter cup body through a sealing gasket.

10. The laboratory multi-link filtration device according to claim 1, characterized in that: It also includes a plurality of sealing plugs, the top of which is provided with a handle, and the upper and lower ends of which can be sealed and connected with the upper and lower openings of the placement hole.

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