Liquid inlet and outlet sealing device

Abstract

The utility model relates to the technical field of sealing devices, in particular to a liquid inlet and outlet sealing device which comprises a duckbill valve and an inlet and outlet through pipe capable of being communicated with the duckbill valve. The inlet and outlet through pipe comprises a pipeline connecting end connected with the duckbill valve and a pipeline circulating end for liquid circulation, a blocking ring is arranged between the pipeline connecting end and the pipeline circulating end, and a sealing assembly for sealing the inlet and outlet through pipe is arranged on the side, close to the pipeline connecting end, of the blocking ring; when the duckbill valve is communicated with the inlet and outlet through pipe, primary sealing is formed between the duckbill valve and the pipeline connecting end due to one-way circulation of the duckbill valve; when liquid to be leaked is diffused out of the pipeline connecting end through the duckbill valve, secondary sealing is formed through the sealing assembly. The sealing device has the advantages of multi-layer sealing and high sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing devices, and more specifically, to a liquid inlet and outlet sealing device. Background Art

[0002] Cell staining is a commonly used technique in biological and medical research, mainly used to observe and analyze the structure, function and metabolic activities of cells.

[0003] With the development of science and technology and the progress of the times, intelligent mechanized operations have gradually replaced manual operations, including cell staining, which is automated by fully automatic staining machines. However, different cells require different staining solutions and staining steps. Among the many staining solutions, it is necessary to avoid cross-infection between the various staining solutions. The sealing of the staining solution during transportation is particularly important. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a liquid inlet and outlet sealing device having the advantages of multi-layer sealing and strong sealing performance.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an inlet and outlet liquid sealing device, comprising a duckbill valve and an inlet and outlet pipe capable of communicating with the duckbill valve;

[0006] The inlet and outlet pipe comprises a pipe connection end connected to the duckbill valve and a pipe flow end for liquid flow, a sealing ring is arranged between the pipe connection end and the pipe flow end and the pipe connection end, and a sealing component for sealing the inlet and outlet pipe is arranged on one side of the sealing ring close to the pipe connection end;

[0007] When the duckbill valve is connected to the inlet and outlet pipe, a primary seal is formed between the duckbill valve and the pipe connection end due to the one-way flow of the duckbill valve; when the leaked liquid diffuses to the outside of the pipe connection end through the duckbill valve, a secondary seal is formed by the sealing component.

[0008] Preferably, the sealing assembly comprises an annular groove provided on one side of the sealing ring and a sealing ring embedded in the annular groove, and the annular groove is circumferentially arranged along the pipeline connecting end.

[0009] Preferably, the sealing assembly further comprises an external thread provided on the surface of the pipe connection end.

[0010] Preferably, the duckbill valve comprises an abutment end and a liquid inlet and outlet end communicating with the abutment end, and the abutment end can be communicated with the pipeline connection end;

[0011] When liquid enters the flow end of the pipeline, the outlet direction of the liquid inlet and outlet is arranged in a direction away from the flow end of the pipeline;

[0012] When liquid is discharged from the flow end of the pipeline, the outlet direction of the liquid inlet and outlet end is arranged along the direction close to the flow end of the pipeline.

[0013] Preferably, an extension end is provided between the abutting end and the liquid inlet and outlet ends.

[0014] Preferably, the pipe connecting end includes an outer edge port arranged in a conical shape and a stepped groove.

[0015] In summary, the utility model has the beneficial effects:

[0016] 1. When liquid enters the pipeline flow end, the liquid flows into the pipeline connection end through the pipeline flow end. At this time, the outlet direction of the duckbill valve is set in the direction away from the pipeline flow end. Under the one-way flow of the duckbill valve, the liquid flows in the inlet and outlet pipe and the duckbill valve. The one-way flow of the duckbill valve forms a primary seal between the duckbill valve and the pipeline connection end. The overflowed liquid is then sealed and blocked by the sealing component to form a secondary seal.

[0017] 2. When liquid is discharged from the pipeline flow end, the liquid flows out from the pipeline connection end to the pipeline flow end. At this time, the outlet direction of the duckbill valve is set close to the pipeline flow end. Under the one-way flow of the duckbill valve, the liquid flows in the inlet and outlet pipes and the duckbill valve. The one-way flow of the duckbill valve forms a primary seal between the duckbill valve and the pipeline connection end. The overflowed liquid is then sealed and blocked by the sealing component to form a secondary seal.

[0018] 3. In different usage scenarios, different combinations of duckbill valves and inlet and outlet pipes are used to form a multi-level sealing effect, which prevents liquid reflux and ensures the sealing of liquid flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the connection of the embodiment of the utility model in the liquid inlet state;

[0020] Figure 2 This is a schematic diagram of the connection of the liquid discharge state of an embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the installation state of an embodiment of the utility model.

[0022] Figure numerals: 1. duckbill valve; 11. abutment end; 12. liquid inlet and outlet end; 13. extension end; 2. inlet and outlet pipe; 21. pipeline connection end; 22. pipeline flow end; 23. sealing ring; 24. annular groove; 25. sealing ring; 26. external thread; 27. outer edge port; 28. stepped groove; 3. manifold. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] A liquid inlet and outlet sealing device, see Figure 1-3 , comprising a duckbill valve 1 and an inlet and outlet pipe 2 capable of communicating with the duckbill valve 1;

[0028] The inlet and outlet pipe 2 includes a pipe connection end 21 connected to the duckbill valve 1 and a pipe flow end 22 for liquid flow, a blocking ring 23 is provided between the pipe connection end 21 and the pipe flow end 22 and the pipe connection end 21, and a sealing component for sealing the inlet and outlet pipe 2 is provided on the side of the blocking ring 23 close to the pipe connection end 21;

[0029] When the duckbill valve 1 is connected to the inlet and outlet pipe 2, a primary seal is formed between the duckbill valve 1 and the pipe connection end 21 due to the one-way flowability of the duckbill valve 1; when the leaked liquid diffuses to the outside of the pipe connection end 21 through the duckbill valve 1, a secondary seal is formed by the sealing component.

[0030] When implementing this embodiment, there are two different states of use:

[0031] 1. When liquid enters the pipeline circulation end 22, the liquid flows into the pipeline connection end 21 through the pipeline circulation end 22. At this time, the outlet direction of the duckbill valve 1 is set in a direction away from the pipeline circulation end 22. Under the one-way flowability of the duckbill valve 1, the liquid flows in the inlet and outlet pipe 2 and the duckbill valve 1. The one-way flowability of the duckbill valve 1 forms a primary seal between the duckbill valve 1 and the pipeline connection end 21. The overflowed liquid is then sealed and blocked by the sealing component to form a secondary seal.

[0032] Second, when liquid flows out of the pipeline circulation end 22, the liquid flows out to the pipeline circulation end 22 through the pipeline connection end 21. At this time, the outlet direction of the duckbill valve 1 is set in the direction close to the pipeline circulation end 22. Under the one-way flowability of the duckbill valve 1, the liquid flows in the inlet and outlet pipe 2 and the duckbill valve 1. The one-way flowability of the duckbill valve 1 forms a primary seal between the duckbill valve 1 and the pipeline connection end 21. The overflowed liquid is then sealed and blocked by the sealing component to form a secondary seal.

[0033] In summary, in different usage scenarios, different combinations of the duckbill valve 1 and the inlet and outlet pipe 2 are used to form a multi-level sealing effect, which prevents liquid reflux while ensuring the sealing of liquid flow and preventing various dyeing liquids from infecting each other.

[0034] Specifically, the sealing assembly includes an annular groove 24 provided on one side of the blocking ring 23 and a sealing ring 25 embedded in the annular groove 24 . The annular groove 24 is circumferentially arranged along the pipeline connecting end 21 .

[0035] Since the duckbill valve 1 and the inlet and outlet pipe 2 are independent components, liquid leakage is inevitable between the two connections. Therefore, the overflowing liquid is blocked by the annular groove 24 and the sealing ring 25 to enhance the sealing effect.

[0036] Specifically, the sealing assembly further includes an external thread 26 disposed on the surface of the pipe connecting end 21 .

[0037] The external thread 26 is used to realize the threaded connection between the pipe connection end 21 and the external connection piece, and can also play a sealing role through the locking of the internal and external threads 26. The external connection piece of this embodiment is a manifold 3, and a flow channel is arranged inside the manifold 3 for transporting dye liquid reagents, wherein the flow channel inside the manifold 3 is provided with an internal thread for connection of the external thread 26. Through the threaded locking, the connection between the manifold 3 and the inlet and outlet pipe 2 is realized, and the sealing between the inlet and outlet channel and the manifold 3 is realized.

[0038] Specifically, the duckbill valve 1 includes an abutment end 11 and a liquid inlet and outlet end 12 connected to the abutment end 11, and the abutment end 11 can be connected to the pipeline connection end 21;

[0039] When liquid enters the pipeline circulation end 22, the outlet direction of the liquid inlet and outlet end 12 is arranged in a direction away from the pipeline circulation end 22;

[0040] When liquid is discharged from the pipeline circulation end 22 , the outlet direction of the liquid inlet and outlet end 12 is arranged along a direction close to the pipeline circulation end 22 .

[0041] In this embodiment, when liquid enters the pipe circulation end 22, the liquid flows into the pipe connection end 21 through the pipe circulation end 22, which is actually the liquid intake operation to the manifold 3 through the inlet and outlet pipe 2. At this time, the abutting end 11 of the duckbill valve 1 is in abutment and contact with the pipe connection end 21. At the same time, the duckbill valve 1 and the inlet and outlet pipes are both located in the circulation channel and connected. Then, the threaded locking is used to strengthen the abutment between the duckbill valve 1 and the inlet and outlet pipe 2. While the duckbill valve 1 is in one-way circulation, the leaking liquid is sealed and protected by the threaded locking and the sealing of the sealing ring 25.

[0042] When liquid is discharged from the pipe circulation end 22, the liquid flows out from the pipe circulation end 22 to the pipe connection end 21, which is actually the liquid discharge operation to the inlet and outlet pipe 2 through the manifold 3. At this time, the inlet and outlet liquid ends 12 of the duckbill valve 1 are completely inserted into the pipe connection end 21, and the duckbill valve 1 and the inlet and outlet pipes are buried in the circulation channel to form a connection, and then the threaded locking is used to strengthen the abutment between the duckbill valve 1 and the inlet and outlet pipe 2. While the duckbill valve 1 is unidirectionally flowing, the leaking liquid is sealed and protected by the threaded locking and the sealing of the sealing ring 25.

[0043] Specifically, an extension end 13 is provided between the abutment end 11 and the liquid inlet and outlet end 12. The extension end 13 can be used to adjust the length of the duckbill valve 1 according to the implementation situation, so as to facilitate installation and setting.

[0044] Specifically, the pipe connection end 21 includes a conical outer edge port 27 and a stepped groove 28. Through the arrangement of the outer edge port 27 and the stepped groove 28, the pipe connection end 21 forms a pagoda connection port, which facilitates the bite fixation of the external hose and the pagoda connection port in an interference fit state.

[0045] The above embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A liquid inlet and outlet sealing device, characterized by: It comprises a duckbill valve (1) and an inlet and outlet pipe (2) capable of communicating with the duckbill valve (1); The inlet and outlet passage (2) comprises a pipe connection end (21) connected to the duckbill valve (1) and a pipe flow end (22) for liquid flow, a sealing ring (23) is arranged between the pipe connection end (21) and the pipe flow end (22) and the pipe connection end (21), and a sealing component for sealing the inlet and outlet passage (2) is arranged on a side of the sealing ring (23) close to the pipe connection end (21); When the duckbill valve (1) is connected to the inlet and outlet passage (2), a primary seal is formed between the duckbill valve (1) and the pipe connection end (21) due to the one-way flow property of the duckbill valve (1); when the leaked liquid diffuses to the outside of the pipe connection end (21) through the duckbill valve (1), a secondary seal is formed by the sealing component.

2. The liquid inlet and outlet sealing device according to claim 1, characterized in that: The sealing assembly comprises an annular groove (24) provided on one side of the sealing ring (23) and a sealing ring (25) embedded in the annular groove (24); the annular groove (24) is arranged circumferentially around the pipe connecting end (21).

3. The liquid inlet and outlet sealing device according to claim 2, characterized in that: The sealing assembly further comprises an external thread (26) provided on the surface of the pipe connection end (21).

4. The liquid inlet and outlet sealing device according to claim 1, characterized in that: The duckbill valve (1) comprises an abutment end (11) and a liquid inlet and outlet end (12) in communication with the abutment end (11), and the abutment end (11) can be in communication with the pipeline connection end (21); When liquid enters the pipeline circulation end (22), the outlet direction of the liquid inlet and outlet end (12) is arranged in a direction away from the pipeline circulation end (22); When liquid is discharged from the pipeline circulation end (22), the outlet direction of the liquid inlet and outlet end (12) is arranged in a direction close to the pipeline circulation end (22).

5. The liquid inlet and outlet sealing device according to claim 4, characterized in that: An extension end (13) is provided between the abutting end (11) and the liquid inlet and outlet end (12).

6. The liquid inlet and outlet sealing device according to claim 1, characterized in that: The pipeline connection end (21) comprises an outer edge port (27) arranged in a conical shape and a stepped groove (28).

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