Sample suction gun capable of rapidly switching between single cavity and multiple cavities

Abstract

The utility model provides a sample suction gun capable of rapidly switching between a single cavity and multiple cavities, and belongs to the technical field of sample collection. The sample suction gun capable of rapidly switching the single cavity and the multiple cavities comprises a sample suction gun body, a switching assembly is arranged at the bottom end of the sample suction gun body, a centralized pipeline is installed at the top end of the interior of the switching assembly, the bottom end of the centralized pipeline is communicated with a plurality of storage pipes, and electromagnetic valves are installed at the joints of the storage pipes and the centralized pipeline; the bottom ends of the multiple storage pipes communicate with suction head assemblies correspondingly, the bottom end of the switching assembly is connected with a mounting base, the outer wall of the mounting base is slidably connected with a sliding box, one end of each suction head assembly penetrates through the mounting base and extends into the sliding box, and the switching assembly comprises a shell and a control panel. A control panel is installed on one side of the outer wall of the shell in an embedded mode, and the electromagnetic valve is electrically connected with the control panel through a wire and controlled by the control panel.

Description

Technical Field

[0001] The utility model relates to the technical field of sample collection, in particular to a sample suction gun capable of quickly switching between single and multi-cavities. Background Art

[0002] In order to obtain multiple reagents at one time when collecting liquids, multiple suction cups are set in the pipette. When in use, different reagents can be sucked simultaneously through multiple suction cups to meet the use requirements. After searching, a Chinese patent with authorization announcement number CN205613441U discloses a pipette, which includes: a hollow cylinder; a main push rod, located at one end of the cylinder and movably arranged in the cylinder; multiple suction cups, all arranged at the other end of the cylinder and connected to the cylinder; a first piston, movably arranged in each suction cup; the pipette also includes: a limit assembly for limiting the displacement of the first piston, which is adjustably arranged in each suction cup. The pipette provided by the utility model can solve the problem that the pipette in the prior art can only absorb quantitative samples.

[0003] However, in actual use of this solution, since multiple suction cups are in a connected structure at the same time, the multiple suction cups can only perform suction actions synchronously. However, in some sampling operations, multiple suction cups are not needed, which will cause some suction cups to be empty, thereby inhaling air and possibly contaminating the sample reagents.

[0004] Therefore, we made improvements on this and proposed a sample suction gun that can quickly switch between single and multi-cavities. Utility Model Content

[0005] In order to solve the problem that the existing sample suction gun cannot realize the single-cavity and multi-cavity switching function, the utility model provides a sample suction gun which can quickly switch between single-cavity and multi-cavity.

[0006] The utility model is achieved in this way:

[0007] A sample suction gun capable of rapid switching between single and multi-cavities comprises a sample suction gun body, a switching assembly is provided at the bottom end of the sample suction gun body, a centralized pipeline is installed at the top end inside the switching assembly, the bottom end of the centralized pipeline is connected to a plurality of storage tubes, electromagnetic valves are installed at the connection points between the plurality of storage tubes and the centralized pipeline, the bottom ends of the plurality of storage tubes are respectively connected to suction head assemblies, the bottom end of the switching assembly is connected to a mounting seat, a sliding box is slidably connected to the outer wall of the mounting seat, one end of the suction head assembly passes through the mounting seat and extends to the interior of the sliding box.

[0008] Furthermore, the switching assembly includes a shell and a control panel, and the control panel is embedded and installed on one side of the outer wall of the shell.

[0009] The beneficial effect of adopting the above further solution is that, through the installation and use of the control panel, it is convenient to centrally and uniformly control multiple solenoid valves.

[0010] Furthermore, the solenoid valve is electrically connected to the control panel via a wire and is controlled by the control panel.

[0011] The beneficial effect of adopting the above further solution is that, through the electrical connection between the solenoid valve and the control panel, it is possible to perform on-off control on multiple or a single solenoid valve.

[0012] Furthermore, the centralized pipeline includes a horizontal pipe, a vertical pipe and a plurality of openings, the top end of the horizontal pipe is connected to the bottom end of the vertical pipe, and the top end of the vertical pipe is threadedly connected to the bottom end of the sample suction gun body.

[0013] The beneficial effect of adopting the above further solution is that, by connecting the horizontal tube and the vertical tube, a connecting structure can be formed between the sample suction gun body and the centralized pipeline, thereby facilitating the centralized pipeline to perform suction actions on different storage tubes.

[0014] Furthermore, a plurality of openings are provided at the bottom end of the transverse tube, and the solenoid valves are respectively located inside the openings.

[0015] The beneficial effect of adopting the above further solution is that, through the setting of the opening, a position is provided for the installation of the solenoid valve.

[0016] Furthermore, the suction head assembly includes an outer tube, an inner tube, a spring, an anti-slip ring and a limit port, the inner part of the outer tube is slidably connected to the inner tube, the top end of the inner tube is connected to the spring, and one end of the spring is connected to the inner top end of the outer tube.

[0017] The beneficial effect of adopting the above further solution is that, through the elastic effect of the spring on the inner tube, the outer tube and the inner tube can be telescopically moved, thereby being suitable for taking liquid samples at different depths.

[0018] Furthermore, an anti-slip ring is sleeved on one end of the inner tube, and limiting openings that match the anti-slip ring are respectively arranged at both ends of the outer tube.

[0019] The beneficial effect of adopting the above further solution is that, by using the anti-slip ring in conjunction with the limit opening, the outer tube and the inner tube are prevented from being detached from each other.

[0020] Furthermore, the sliding box includes a box body, a clamping strip, a water absorption plate and a shovel plate, the clamping strips are respectively arranged on both sides of the interior of the box body, and the outer wall of the mounting seat is provided with a sliding groove that engages with the clamping strip.

[0021] The beneficial effect of adopting the above further solution is that, through the coordinated use of the clamping strip and the sliding groove, the box body can slide back and forth outside the mounting seat.

[0022] Furthermore, a water absorption plate is installed at the inner bottom end of the box body, and a shovel plate is installed at one end of the box body.

[0023] The beneficial effect of adopting the above further solution is that, by installing and using the water absorption plate, it is convenient to absorb the sample liquid leaked from the suction head assembly, and by installing and using the shovel plate, it is convenient for the suction head assembly to enter the interior of the slide box.

[0024] The beneficial effects of the utility model are as follows: through the coordinated use of the switching component, the centralized pipeline, the storage tube, the electromagnetic valve and the suction head component, the sample suction gun can cut different numbers of liquid collection heads, thereby avoiding the occurrence of no-load absorption of air, wherein, through the use of the switching component, it is possible to provide an installation space for the centralized pipeline and the storage tube, which is convenient for storing the sample liquid absorbed by the suction head assembly into the storage tube, and at the same time, through the on-off control of the electromagnetic valve, the negative pressure inside the centralized pipeline can be connected to the storage tubes at different positions, thereby facilitating the suction head assembly at the corresponding position to perform an extraction action, and by the sliding box sliding on the outer wall of the mounting seat, it can cover the suction head assembly that is not in operation, thereby helping to reduce the entry of airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A stereoscopic diagram of a sample suction gun capable of rapid switching between single and multi-cavity chambers provided by the utility model;

[0027] Figure 2 A schematic diagram of the sliding box structure of a sample suction gun capable of rapid switching between single and multi-cavity chambers provided by the utility model;

[0028] Figure 3 A schematic diagram of the expansion of the suction head assembly of a sample suction gun capable of rapid switching between single and multi-cavities provided by the utility model;

[0029] Figure 4 A cross-sectional view of a switching component of a sample suction gun capable of rapid switching between single and multi-cavities provided by the utility model;

[0030] Figure 5 A schematic diagram of a centralized pipeline of a sample suction gun capable of rapid switching between single and multi-cavities provided by the utility model.

[0031] In the figure: 100, the main body of the sample suction gun; 200, the switching component; 2001, the outer shell; 2002, the control panel; 300, the sliding box; 3001, the box body; 3002, the card strip; 3003, the water absorption plate; 3004, the shovel plate; 400, the suction head assembly; 4001, the outer tube; 4002, the inner tube; 4003, the spring; 4004, the anti-slip ring; 4005, the limit port; 500, the centralized pipeline; 5001, the horizontal tube; 5002, the vertical tube; 5003, the opening; 600, the storage tube; 700, the solenoid valve; 800, the mounting seat. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] See also Figure 1-Figure 5The utility model provides a technical solution: a sample suction gun capable of rapid switching between single and multi-cavities, comprising a sample suction gun body 100, a switching assembly 200 being provided at the bottom end of the sample suction gun body 100, a central pipeline 500 being installed at the top end of the inner part of the switching assembly 200, a plurality of storage tubes 600 being connected to the bottom end of the central pipeline 500, a solenoid valve 700 being installed at the connection between the plurality of storage tubes 600 and the central pipeline 500, a suction head assembly 400 being respectively connected to the bottom end of the switching assembly 200, a mounting seat 800 being slidably connected to the outer wall of the mounting seat 800, and one end of the suction head assembly 400 respectively passes through the mounting seat 800. The mounting seat 800 extends to the interior of the slide box 300. By using the switching assembly 200, it becomes the installation space of the centralized pipe 500 and the storage tube 600, so that the sample liquid sucked by the suction head assembly 400 can be stored in the storage tube 600. At the same time, through the on-off control of the solenoid valve 700, the negative pressure inside the centralized pipe 500 can be connected to the storage tubes 600 at different positions, so as to facilitate the suction head assembly 400 at the corresponding position to perform the extraction action. In addition, the slide box 300 slides on the outer wall of the mounting seat 800, so that the suction head assembly 400 that is not in operation can be covered, thereby helping to reduce the entry of airflow.

[0036] Embodiment 2

[0037] See also Figure 1-Figure 5 As an embodiment of the present invention, further, the switching assembly 200 includes a housing 2001 and a control panel 2002. The control panel 2002 is embedded on one side of the outer wall of the housing 2001. The installation and use of the control panel 2002 facilitates centralized and unified control of multiple solenoid valves 700. The solenoid valves 700 are electrically connected to the control panel 2002 through a wire and are controlled by the control panel 2002. Through the electrical connection between the solenoid valves 700 and the control panel 2002, it is possible to perform on-off control on multiple or a single solenoid valve 700. The centralized pipeline 500 includes a horizontal pipe 5001, a vertical pipe 5002, and a plurality of solenoid valves 700. 002 and a plurality of openings 5003, the top of the horizontal tube 5001 is connected to the bottom of the vertical tube 5002, the top of the vertical tube 5002 is threadedly connected to the bottom of the sample suction gun body 100, and the horizontal tube 5001 and the vertical tube 5002 are connected to each other, so that the sample suction gun body 100 can form a connecting structure with the centralized pipeline 500, so that the centralized pipeline 500 can perform suction on different storage tubes 600. A plurality of openings 5003 are provided at the bottom end of the horizontal tube 5001, and the solenoid valves 700 are respectively located inside the openings 5003. The setting of the openings 5003 provides a position for the installation of the solenoid valves 700.

[0038] Embodiment 3

[0039] See also Figure 1-Figure 5As an embodiment of the present invention, further, the suction head assembly 400 includes an outer tube 4001, an inner tube 4002, a spring 4003, an anti-slip ring 4004 and a limiting opening 4005. The inner part of the outer tube 4001 is slidably connected to the inner tube 4002, and the top of the inner tube 4002 is connected to the spring 4003. One end of the spring 4003 is connected to the inner top of the outer tube 4001. Through the elastic action of the spring 4003 on the inner tube 4002, the outer tube 4001 and the inner tube 4002 can be telescopically moved, so as to be suitable for taking liquid samples at different depths. One end of the inner tube 4002 is covered with an anti-slip ring 4004, and the two ends of the outer tube 4001 are respectively provided with limiting openings 4005 that match the anti-slip ring 4004. Through the coordinated use of the anti-slip ring 4004 and the limiting opening 4005, In order to avoid the outer tube 4001 and the inner tube 4002 from being separated from each other, the sliding box 300 includes a box body 3001, a clamping strip 3002, a water absorption plate 3003 and a shovel plate 3004. The clamping strips 3002 are respectively arranged on both sides of the interior of the box body 3001, and the outer wall of the mounting seat 800 is provided with a slide groove that engages with the clamping strip 3002. Through the coordinated use of the clamping strip 3002 and the slide groove, the box body 3001 can slide back and forth on the outside of the mounting seat 800, and the water absorption plate 3003 is installed at the bottom end of the box body 3001, and the shovel plate 3004 is installed at one end of the box body 3001. The installation and use of the water absorption plate 3003 facilitates the absorption of sample liquid leaked from the suction head assembly 400, and the installation and use of the shovel plate 3004 facilitates the suction head assembly 400 to enter the interior of the sliding box 300.

[0040] Specifically, the working principle of the sample suction gun capable of rapid switching between single and multi-cavities is as follows: when in use, first check whether the structure of the sample suction gun is intact, and then put it into use after ensuring that the structure is intact, wherein, by using the switching component 200, it is provided with an installation space for the centralized pipeline 500 and the storage tube 600, so that the sample liquid sucked by the suction head component 400 can be stored in the storage tube 600, and at the same time, by manipulating the control panel 2002, the solenoid valves 700 at different positions can be controlled, and by controlling the on and off of the solenoid valves 700, the negative pressure inside the centralized pipeline 500 can be connected to the storage tubes 600 at different positions, so as to facilitate the suction head component 400 at the corresponding position to perform the extraction action, and through the slide box 3 00 slides on the outer wall of the mounting seat 800, so that it can cover the non-operating suction head assembly 400, which is beneficial to reduce the entry of airflow. Secondly, through the connection between the horizontal tube 5001 and the vertical tube 5002, the sampling gun body 100 can form a connecting structure with the centralized pipeline 500, so that the centralized pipeline 500 can perform suction actions on different storage tubes 600, and through the elastic effect of the spring 4003 on the inner tube 4002, the outer tube 4001 and the inner tube 4002 can be telescopically moved, so as to be suitable for liquid samples of different depths. At the same time, through the coordinated use of the anti-slip ring 4004 and the limit port 4005, the outer tube 4001 and the inner tube 4002 are prevented from being separated from each other.

[0041] It should be noted that the specific model specifications of the control panel 2002 and the solenoid valve 700 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0042] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sample suction gun capable of rapid switching between single and multi-cavity chambers, comprising a sample suction gun body (100), characterized in that: A switching assembly (200) is provided at the bottom end of the sample suction gun body (100), a central pipeline (500) is installed at the top of the interior of the switching assembly (200), the bottom end of the central pipeline (500) is connected to a plurality of storage tubes (600), a solenoid valve (700) is installed at the connection between the plurality of storage tubes (600) and the central pipeline (500), the bottom ends of the plurality of storage tubes (600) are respectively connected to a suction head assembly (400), the bottom end of the switching assembly (200) is connected to a mounting seat (800), the outer wall of the mounting seat (800) is slidably connected to a sliding box (300), one end of the suction head assembly (400) passes through the mounting seat (800) and extends to the interior of the sliding box (300).

2. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 1, characterized in that: The switching assembly (200) comprises a housing (2001) and a control panel (2002), and the control panel (2002) is embedded and installed on one side of the outer wall of the housing (2001).

3. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 2, characterized in that: The solenoid valve (700) is electrically connected to the control panel (2002) via a wire and is controlled by the control panel (2002).

4. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 1, characterized in that: The centralized pipeline (500) includes a horizontal tube (5001), a vertical tube (5002) and a plurality of openings (5003), the top end of the horizontal tube (5001) is connected to the bottom end of the vertical tube (5002), and the top end of the vertical tube (5002) is threadedly connected to the bottom end of the sample suction gun body (100).

5. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 4, characterized in that: A plurality of openings (5003) are provided at the bottom end of the transverse tube (5001), and the solenoid valves (700) are respectively located inside the openings (5003).

6. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 1, characterized in that: The suction head assembly (400) comprises an outer tube (4001), an inner tube (4002), a spring (4003), an anti-slip ring (4004) and a limit opening (4005); the interior of the outer tube (4001) is slidably connected to the inner tube (4002); the top end of the inner tube (4002) is connected to the spring (4003); and one end of the spring (4003) is connected to the top end of the interior of the outer tube (4001).

7. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 6, characterized in that: An anti-slip ring (4004) is sleeved on one end of the inner tube (4002), and limiting openings (4005) that match the anti-slip ring (4004) are respectively provided at both ends of the outer tube (4001).

8. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 1, characterized in that: The sliding box (300) comprises a box body (3001), a clamping strip (3002), a water absorption plate (3003) and a shovel plate (3004), the clamping strips (3002) are respectively arranged on both sides of the interior of the box body (3001), and the outer wall of the mounting seat (800) is provided with a sliding groove that is mutually engaged with the clamping strip (3002).

9. The sample suction gun capable of rapid switching between single and multi-cavity chambers according to claim 8, characterized in that: A water absorption plate (3003) is installed at the inner bottom end of the box body (3001), and a shovel plate (3004) is installed at one end of the box body (3001).

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