Simple nitrogen blowing device and pipe fixing mechanism thereof

By designing a solid tube mechanism of a simple nitrogen blowing device, using the coordination of threads and support, the pollution problem caused by contact between the nitrogen blowing needle and the test tube wall is solved, and adaptability to different test tube diameters is achieved, improving the stability of the device Sex and applicability.

CN222258906UActive Publication Date: 2024-12-27FUSHEN LIFE SCI (SHANGHAI) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420536069.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-19
Publication Date
2024-12-27
Estimated Expiration
2034-03-19

AI Technical Summary

Technical Problem

When used in existing nitrogen blowing devices, the nitrogen blowing needle is easily contaminated due to the low precision of the mold, and the pore size of the test tube rack or metal bath is fixed, so it cannot adapt to test tubes of different diameters.

Method used

A simple nitrogen blowing device and its solid tube mechanism are designed, including mounting pipes, pushing components and support members. Through the cooperation of external threads and internal threads, the pushing components drive the support members to expand or close when rotating, forming a suitable size for different specifications. The solid tube structure of the test tube ensures that the nitrogen blowing needle is stably inserted and avoids collision with the test tube wall.

Benefits of technology

It effectively reduces the probability of nitrogen blowing needle contamination and is compatible with multiple test tube diameters, ensuring uniform blowing of samples and easy disassembly and storage of the device.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222258906U_ABST
    Figure CN222258906U_ABST
Patent Text Reader

Abstract

The utility model discloses a simple nitrogen blowing device and a pipe fixing mechanism thereof. The pipe fixing mechanism comprises a mounting pipe, a pushing and unfolding assembly and a plurality of supporting pieces. An inserting channel is formed in the mounting pipe, the pipe fixing mechanism can stretch into and draw out a pipe fitting, external threads are formed on the outer wall of part of the mounting pipe, and a plurality of mounting parts are formed on the mounting pipe in the radial direction. An installation channel is formed by the pushing and unfolding assembly, internal threads matched with the external threads are formed on the inner wall of at least part of the installation channel, and the pushing and unfolding assembly is installed on the outer side of the installation pipe in a threaded mode. One end of each supporting piece is connected to the mounting part in a pivoted mode, the pushing and unfolding assembly is connected with the supporting pieces in a pivoted mode, and the pushing and unfolding assembly can move in the axial direction of the inserting and connecting channel relative to the mounting pipe and drive the multiple supporting pieces to pivot at the same time when rotating or rotating the mounting pipe, so that the pipe fixing mechanism can be stably inserted into the pipe. Therefore, when the nitrogen blowing needle inserted into the insertion channel blows gas into a sample received by the pipe fitting, the nitrogen blowing needle is limited by the inner wall of the insertion channel and does not shake.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to a nitrogen blowing device, in particular to a simple nitrogen blowing device and a pipe fixing mechanism thereof. Background Art

[0002] The nitrogen blowing device inserts the nitrogen blowing needle into the test tube or centrifuge tube, and then uses the nitrogen blowing needle to blow nitrogen into the sample surface, so as to achieve the purpose of quickly concentrating the sample in the test tube or centrifuge tube. Because the nitrogen blowing device has the characteristics of time saving, easy operation and easy control, it is widely used in pesticide residue analysis, food, pharmaceutical, testing and other industries.

[0003] When in use, the test tube is usually placed in a test tube rack with holes, and the test tube placed in the test tube rack extends into the water bath or metal bath with holes at the bottom of the device. The upper part of the device is a fixed array of nitrogen blowing needles (tubes) connected to the nitrogen source. Since the nitrogen blowing needle is usually long, it often contacts the wall of the test tube when the nitrogen blowing needle enters the inside of the test tube due to the low precision of the mold, resulting in contamination. In addition, the aperture of the test tube rack or metal bath is fixed, and it is not easy to change the diameter of the test tube for nitrogen blowing. Utility Model Content

[0004] One advantage of the utility model is that it provides a simple nitrogen blowing device and a tube fixing mechanism thereof, which can stably place the nitrogen blowing needle in a test tube or a centrifuge tube, greatly reducing the probability of the nitrogen blowing needle being contaminated, and is compatible with test tubes of more calibers.

[0005] In order to achieve at least one of the above advantages of the present invention, the present invention provides a pipe fixing mechanism, the pipe fixing mechanism comprising:

[0006] A mounting tube, the mounting tube forms a plug-in passage, the fixing tube mechanism can insert and withdraw a pipe, a portion of the outer wall of the mounting tube forms an external thread, and the mounting tube forms a plurality of mounting portions along the radial direction;

[0007] A push assembly, wherein the push assembly forms a mounting channel, wherein at least a portion of the inner wall of the mounting channel forms an internal thread that matches the external thread, and the push assembly is threadedly mounted on the outer side of the mounting tube;

[0008] Multiple support members, one end of each of the support members is pivotally connected to the mounting portion, the pushing assembly is pivotally connected to the support members, and the pushing assembly can move axially relative to the mounting tube along the insertion channel when the mounting tube rotates or rotates, and drive the multiple support members to pivot simultaneously.

[0009] According to an embodiment of the utility model, the installation pipe has a holding portion, and when the pipe fixing mechanism extends into the pipe, the holding portion remains extended to the outside.

[0010] According to an embodiment of the utility model, the mounting portion is configured to be rotatable around the axial direction of the insertion channel.

[0011] According to one embodiment of the utility model, the pushing assembly includes a moving tube and a pushing member, at least a portion of the inner wall of the moving tube forms the internal thread, and the moving tube is threadedly installed on the outer side of the mounting tube, the moving tube is rotatably connected to the pushing member, the pushing member is movably sleeved on the outer side of the mounting tube along the axial direction of the insertion channel, and the pushing member is pivotally connected to the support member.

[0012] According to an embodiment of the utility model, the movable tube forms a connecting structure, the pushing member forms an assembly structure, the assembly structure formed by the pushing member is installed on the connecting structure, and either the assembly structure or the connecting structure is implemented as a groove, and the other is implemented as a convex strip.

[0013] According to one embodiment of the utility model, the pushing assembly includes a movable tube, a pushing member and an elastic member, at least a portion of the inner wall of the movable tube forms the internal thread, and the movable tube is threadedly mounted on the outer side of the mounting tube, the pushing member can be movably sleeved on the outer side of the mounting tube along the axial direction of the plug-in channel, and the pushing member is pivotally connected to the support member, and the elastic member is arranged between the mounting portion and the pushing member.

[0014] According to one embodiment of the utility model, each of the support members includes a support body and a buffer portion, one end of the support body is pivotally connected to the mounting portion, the buffer portion is installed at an end of the support body away from the mounting portion, and the buffer portion has a preset elastic coefficient.

[0015] In order to achieve at least one of the above advantages of the present invention, the present invention provides a simple nitrogen blowing device, the simple nitrogen blowing device comprising:

[0016] The pipe fixing mechanism as described in the above embodiment;

[0017] A device body, the device body includes at least one nitrogen blowing needle, and the nitrogen blowing needle is plugged into the plug-in channel.

[0018] According to an embodiment of the utility model, the mounting tube and the nitrogen blowing needle are integrally formed.

[0019] According to an embodiment of the present invention, the nitrogen blowing needle is detachably plugged into the plug-in channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1The schematic diagram of the structure of the simplified nitrogen blowing device of the utility model is shown.

[0021] Figure 2 A structural schematic diagram of an embodiment of the pipe fixing mechanism of the utility model is shown.

[0022] Figure 3 Shows Figure 2 Enlarged view of part A.

[0023] Figure 4 An exploded view of the pipe fixing mechanism of the utility model is shown.

[0024] Figure 5 A structural schematic diagram of another embodiment of the pipe fixing mechanism of the utility model is shown. DETAILED DESCRIPTION

[0025] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0026] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which 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. Therefore, the above terms should not be understood as limiting the present invention.

[0027] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0028] refer to Figures 1 to 5 A simplified nitrogen blowing device according to a preferred embodiment of the present invention will be described in detail below. The simplified nitrogen blowing device includes a pipe fixing mechanism 10 and an equipment body 20.

[0029] The pipe fixing mechanism 10 includes a mounting pipe 11, a spreading assembly 12 and a plurality of supporting members 13. The equipment body 20 includes at least one nitrogen blowing needle 21.

[0030] The mounting tube 11 forms a plug-in channel 1101, and the nitrogen blow needle 21 is plugged into the plug-in channel 1101. The tube fixing mechanism 10 can extend into and withdraw a tube 90, such as a test tube, a centrifuge tube, etc. The outer wall of part of the mounting tube 11 forms an external thread. The extension assembly 12 forms a mounting channel 1201, and the inner wall of at least part of the mounting channel 1201 forms an internal thread that matches the external thread. The extension assembly 12 is threadedly mounted on the outer side of the mounting tube 11. The mounting tube 11 forms a plurality of mounting portions 111 in the radial direction. One end of each of the support members 13 is pivotally connected to the mounting portion 111, and the extension assembly 12 is pivotally connected to the support member 13. The extension assembly 12 can move relative to the mounting tube 11 along the axial direction of the plug-in channel 1101 when the mounting tube 11 rotates or rotates, and drive the plurality of support members 13 to pivot at the same time, so that the support members 13 are expanded or closed.

[0031] Specifically, the pushing assembly 12 or the mounting tube 11 is rotated to move the pushing assembly 12 toward the mounting portion 111 until the end of the support member 13 away from the mounting portion 111 is in contact with the inner wall of the pipe 90. In this way, the pipe fixing mechanism 10 can be stably inserted into the pipe 90, and when the nitrogen blow needle 21 plugged into the plug channel 1101 blows gas into the sample received by the pipe 90, the nitrogen blow needle 21 is limited by the inner wall of the plug channel 1101 and does not shake, so that the sample in the pipe 90 can be evenly blown and the nitrogen blow needle 21 is prevented from colliding with the inner wall of the pipe 90. It can be understood that, since the pushing assembly 12 can drive the support member 13 to open and close to different degrees, the pipe fixing mechanism 10 can be used in pipes 90 of different specifications.

[0032] In one embodiment, the mounting tube 11 is integrally formed with the nitrogen blow needle 21. The experimenter rotates the pushing assembly 12 to open and close the supporting member 13.

[0033] As a deformable form, the nitrogen blowing needle 21 can be detachably plugged into the plug-in channel 1101, so that the experimenter can disassemble and assemble the pipe fixing mechanism 10 according to the use requirements, and the disassembled pipe fixing mechanism 10 is easy to store.

[0034] Preferably, the mounting tube 11 has a holding portion 112. When the pipe fixing mechanism 10 extends into the pipe 90, the holding portion 112 remains extended to the outside, and the holding portion 112 is configured as an elongated structure to provide a position for the experimenter to manipulate the pipe fixing mechanism 10.

[0035] refer to Figure 2In one embodiment, the pushing assembly 12 includes a moving tube 121 and a pushing member 122. The inner wall of at least a portion of the moving tube 121 forms the internal thread, and the moving tube 121 is threadedly mounted on the outer side of the mounting tube 11. The moving tube 121 is rotatably connected to the pushing member 122. The pushing member 122 is movably sleeved on the outer side of the mounting tube 11 along the axial direction of the insertion channel 1101, and the pushing member 122 is pivotally connected to the support member 13.

[0036] In this way, by rotating the moving tube 121 or the mounting tube 11, the moving tube 121 drives the pushing member 122 to approach the mounting portion 111, so that the pushing member 122 pushes the support member 13 to expand. By rotating the moving tube 121 or the mounting tube 11, the moving tube 121 drives the pushing member 122 to move away from the mounting portion 111, so that the pushing member 122 pulls the support member 13 to close.

[0037] Preferably, the moving tube 121 forms a connecting structure 1211, and the pushing member 122 forms an assembly structure 1221. The assembly structure 1221 formed by the pushing member 122 is installed on the connecting structure 1211, and either the assembly structure 1221 or the connecting structure 1211 is implemented as a groove, and the other is implemented as a convex strip.

[0038] As a variation of the above embodiment, the moving tube 121 is fixedly connected to the pushing member 122, and the mounting portion 111 is configured to be rotatable around the axis of the insertion channel 1101. By rotating the pushing assembly 12 or the mounting tube 11 to make the pushing assembly 12 approach the mounting portion 111, the pushing member 122 pushes the support member 13 to unfold.

[0039] refer to Figure 5 As another variant embodiment, the pushing assembly 12 includes a moving tube 121A, a pushing member 122A and an elastic member 123A. The inner wall of at least a portion of the moving tube 121A forms the internal thread, and the moving tube 121A is threadedly mounted on the outer side of the mounting tube 11. The pushing member 122A can be movably sleeved on the outer side of the mounting tube 11 along the axial direction of the insertion channel 1101, and the pushing member 122A is pivotally connected to the support member 13. The elastic member 123A is arranged between the mounting portion 111 and the pushing member 122A.

[0040] In this way, by rotating the moving tube 121 or the mounting tube 11, the moving tube 121 pushes the pushing member 122 toward the mounting portion 111 and the elastic member 123A is elastically deformed, so that the pushing member 122 pushes the support member 13 to expand. By rotating the moving tube 121 or the mounting tube 11, the moving tube 121 moves away from the mounting portion 111, and the pushing member 122A is reset under the elastic restoring force of the elastic member 123A, so that the support member 13 is closed.

[0041] Preferably, the elastic member 123A is sleeved on the outer circumference of the mounting tube 11, so that the elastic member 123A can stably expand and contract. In one example, the elastic member 123A is implemented as a spring.

[0042] refer to Figure 4 In a preferred embodiment, each of the support members 13 includes a support body 131 and a buffer portion 132. One end of the support body 131 is pivotally connected to the mounting portion 111, and the buffer portion 132 is mounted on one end of the support body 131 away from the mounting portion 111. The buffer portion 132 has a preset elastic coefficient, so that the extension assembly 12 drives the support member 13 to expand and the buffer portion 132 abuts against the inner wall of the pipe 90. The buffer portion 132 can avoid collision with the inner wall of the pipe 90, thereby protecting the pipe 90.

[0043] In one example, the buffer portion 132 is made of an elastic material.

[0044] refer to Figure 1 Furthermore, the equipment body 20 also includes a tank body 22, the tank body 22 is used to store gas, and the nitrogen blow needle 21 can be connected to the tank body 22 in an on-off manner.

[0045] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A pipe fixing mechanism, characterized in that: The pipe fixing mechanism comprises: A mounting tube, the mounting tube forms a plug-in passage, the fixing tube mechanism can insert and withdraw a pipe, a portion of the outer wall of the mounting tube forms an external thread, and the mounting tube forms a plurality of mounting portions along the radial direction; A push assembly, wherein the push assembly forms a mounting channel, wherein at least a portion of the inner wall of the mounting channel forms an internal thread that matches the external thread, and the push assembly is threadedly mounted on the outer side of the mounting tube; Multiple support members, one end of each of the support members is pivotally connected to the mounting portion, the pushing assembly is pivotally connected to the support members, and the pushing assembly can move axially relative to the mounting tube along the insertion channel when the mounting tube rotates or rotates, and drive the multiple support members to pivot simultaneously.

2. The pipe fixing mechanism according to claim 1, characterized in that: The installation pipe has a holding portion, and when the pipe fixing mechanism extends into the pipe, the holding portion remains extended to the outside.

3. The pipe fixing mechanism according to claim 2, characterized in that: The mounting portion is configured to be rotatable around an axial direction of the insertion channel.

4. The pipe fixing mechanism according to claim 2, characterized in that: The pushing assembly includes a moving tube and a pushing member, at least a portion of the inner wall of the moving tube forms the internal thread, and the moving tube is threadedly installed on the outer side of the mounting tube, the moving tube is rotatably connected to the pushing member, the pushing member is movably sleeved on the outer side of the mounting tube along the axial direction of the insertion channel, and the pushing member is pivotally connected to the support member.

5. The pipe fixing mechanism according to claim 4, characterized in that: The moving tube forms a connecting structure, and the pushing member forms an assembly structure. The assembly structure formed by the pushing member is installed on the connecting structure. Either the assembly structure or the connecting structure is implemented as a groove, and the other is implemented as a convex strip.

6. The pipe fixing mechanism according to claim 2, characterized in that: The pushing assembly includes a moving tube, a pushing member and an elastic member. The inner wall of at least a portion of the moving tube forms the internal thread, and the moving tube is threadedly mounted on the outer side of the mounting tube. The pushing member can be movably sleeved on the outer side of the mounting tube along the axial direction of the insertion channel, and the pushing member is pivotally connected to the support member. The elastic member is arranged between the mounting portion and the pushing member.

7. The pipe fixing mechanism according to any one of claims 3 to 6, characterized in that: Each of the support members includes a support body and a buffer portion, one end of the support body is pivotally connected to the mounting portion, the buffer portion is mounted on an end of the support body away from the mounting portion, and the buffer portion has a preset elastic coefficient.

8. Simple nitrogen blowing device, characterized in that: The simple nitrogen blowing device comprises: The pipe fixing mechanism according to any one of claims 1 to 7; A device body, the device body includes at least one nitrogen blowing needle, and the nitrogen blowing needle is plugged into the plug-in channel.

9. The simplified nitrogen blowing device according to claim 8, characterized in that: The mounting tube and the nitrogen blowing needle are integrally formed.

10. The simplified nitrogen blowing device according to claim 8, characterized in that: The nitrogen blowing needle is detachably plugged into the plug-in channel.