Liquid sampling device

Abstract

The utility model discloses a liquid sampling device which comprises a shell which is of a thin-wall cylindrical tubular structural body, an opening is formed in the bottom of the shell, and the outline edge of the opening is not intersected with the axis X of the shell; the inner side of one end, close to the opening, of the shell is provided with a core rod which is rotatably sleeved with the shell in an airtight mode, a rotating shaft of the core rod coincides with the axis X, a sampling opening for containing sampling liquid is formed in the position, corresponding to the opening, of the core rod, and the contour edge of the sampling opening does not intersect with the axis X; when the sampling opening is flush with the opening, the sampling opening is in an open state; when the sampling port deviates from the opening, the sampling port is in a closed state. The sampler is reasonable in structural design, and has the effects of being accurate in sampling amount, avoiding dripping, being easy to take out a sample and being easy to clean a sampling opening while being convenient to sample.

Description

Technical Field

[0001] The utility model relates to the technical field of sample extraction, in particular to a liquid sampling device. Background Art

[0002] In the fields of food, medicine and chemical industry, liquids such as raw materials, auxiliary materials, semi-finished products and finished products often need to be sampled for quality analysis, detection-level sampling, etc. Especially in the chemical industry, chemical reactions usually require heating or a large amount of heat is released during the reaction process. The temperature may reach hundreds of degrees, and the sampled liquid may solidify after leaving the heating environment.

[0003] In the prior art, when sampling high-temperature liquids, most of the samples are directly taken using ordinary suction devices, which often cause splashing, dripping, etc., resulting in scalding of the sampling operator or poor sampling effect. In addition, after sampling, the high-temperature liquid will cool and leave residues that are difficult to clean, resulting in the sampler being scrapped, affecting the sampling operation.

[0004] Therefore, there is an urgent need to design a liquid sampling device with a reasonable structural design, which is convenient for sampling, has the effects of accurate sampling volume, avoiding dripping, easy sample removal and cleaning of the sampling port. Utility Model Content

[0005] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0006] A liquid sampling device, characterized in that it comprises a shell (10) in the form of a thin-walled cylindrical tubular structure, wherein an opening (11) is arranged at the bottom of the shell (10), and the contour edge of the opening (11) does not intersect with the axis (X) of the shell (10); a core rod (20) is arranged on the inner side of one end of the shell (10) close to the opening (11) and is airtightly rotatably sleeved with the shell (10), the rotation axis of the core rod (20) coincides with the axis (X), and a sampling port (21) for accommodating a sampled liquid is arranged at a position corresponding to the core rod (20) and the opening (11), and the contour edge of the sampling port (21) does not intersect with the axis (X);

[0007] When the sampling port (21) is aligned with the opening (11), the sampling port (21) is in an open state;

[0008] When the sampling port (21) is separated from the opening (11), the sampling port (21) is in a closed state.

[0009] Preferably, the bottom of the housing (10) is hemispherical.

[0010] Preferably, the exterior of the housing (10) and the surface of the sampling port (21) are coated with Teflon coating.

[0011] Preferably, a end cap (40) is provided at one end of the outer shell (10) away from the opening (11). A connecting rod hole (41) coaxial with the axis (X) is provided in the middle of the end cap (40). An operating rod (30) is rotatably sleeved in the connecting rod hole (41). One end of the operating rod (30) is connected to the mandrel (20), and the other end of the operating rod (30) is located on the side of the end cap (40) away from the outer shell (10).

[0012] Preferably, a marble (60) is provided between the operating rod (30) and the end cap (40). A marble groove (61) for accommodating the marble (60) is provided on the operating rod (30) or the end cap (40) corresponding to the marble (60).

[0013] Preferably, there are two marble grooves (61), and the two marble grooves (61) are arranged with a 180-degree rotation relative to the axis (X).

[0014] Preferably, the operating rod (30) includes a connecting rod (31) rotatably sleeved in the connecting rod hole (41). One end of the connecting rod (31) is connected to the mandrel (20), and a handle (32) is provided at the other end of the connecting rod (31). The handle (32) is non-rotatably connected to the connecting rod (31).

[0015] Preferably, the operating rod (30) is non-rotatably slidably sleeved along the axis (X) with the mandrel (20), and a spring (50) is provided between the end cap (40) and the mandrel (20).

[0016] Preferably, the profiles of the sampling port (21) and the opening (11) are the same.

[0017] Preferably, the end cap (40) is fixed to the outer shell (10) by a fastener (42) perpendicular to the axis (X).

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The structure is reasonably designed. While facilitating sampling, it has the effects of accurate sampling volume, avoiding dripping, easy sample extraction, and cleaning of the sampling port. Description of the Drawings

[0020] Figure 1 is the front view of the present utility model;

[0021] Figure 2 is Figure 1 the A-A sectional view of;

[0022] Figure 3 is the perspective view of the present utility model;

[0023] Figure 4 is the schematic diagram of the closed state of the sampling port.

[0024] Wherein: housing 10, opening 11, mandrel 20, sampling port 21, operating rod 30, connecting rod 31, handle 32, end cap 40, connecting rod hole 41, fastener 42, spring 50, ball 60. Specific embodiments

[0025] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right", "up", "down" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] Next, with reference to the drawings and specific embodiments, the present invention will be further described:

[0029] As Figures 1-4 shown, a liquid sampling device includes a housing 10 in the form of a thin-walled cylindrical tubular structure. An opening 11 is provided at the bottom of the housing 10, and the contour edge of the opening 11 does not intersect the axis X of the housing 10. Inside the housing 10 near one end of the opening 11, a mandrel 20 is rotatably and airtightly sleeved with the housing 10. The rotation axis of the mandrel 20 coincides with the axis X. A sampling port 21 for accommodating the sampling liquid is provided at the position corresponding to the mandrel 20 and the opening 11, and the contour edge of the sampling port 21 does not intersect the axis X.

[0030] As Figure 2 shown, when the sampling port 21 is aligned with the opening 11, the sampling port 21 is in an open state.

[0031] As Figure 4As shown, when the sampling port 21 faces away from the opening 11, the sampling port 21 is in a closed state.

[0032] The usage steps of this embodiment are as follows:

[0033] 1. Insert the liquid sampling device into the liquid to be sampled, keep the opening 11 and the sampling port 21 below the liquid level, and the sampling port 21 is in an open state;

[0034] 2. Rotate the mandrel 20 to make the sampling port 21 in a closed state;

[0035] 3. Take out the liquid sampling device;

[0036] 4. Put the liquid sampling device into the sample retention container, rotate the mandrel 20 to make the sampling port 21 in an open state, and pour out the sampled liquid to complete the sampling.

[0037] Further, in order to facilitate the outflow of the sampled liquid after sampling, the bottom of the housing 10 is hemispherical.

[0038] Further, in order to reduce the adsorption of liquid and reduce liquid dripping, the outer part of the housing 10 and the surface of the sampling port 21 are coated with a Teflon coating.

[0039] Further, for the convenience of operation, a end cap 40 is provided at one end of the housing 10 away from the opening 11. A connecting rod hole 41 coaxial with the axis X is provided in the middle of the end cap 40. An operating rod 30 is rotatably sleeved in the connecting rod hole 41. One end of the operating rod 30 is connected to the mandrel 20, and the other end of the operating rod 30 is located on the side of the end cap 40 away from the housing 10.

[0040] Further, in order to facilitate the position holding of the sampling port 21 in the open and closed states, a ball 60 is provided between the operating rod 30 and the end cap 40, and a ball groove 61 for accommodating the ball 60 is provided on the operating rod 30 or the end cap 40 corresponding to the ball 60.

[0041] Further, there are two ball grooves 61, and the two ball grooves 61 are arranged with a 180-degree rotation relative to the axis X.

[0042] Further, for the convenience of operation and manufacturing, the operating rod 30 includes a connecting rod 31 rotatably sleeved in the connecting rod hole 41. One end of the connecting rod 31 is connected to the mandrel 20, and a handle 32 is provided at the other end of the connecting rod 31. The handle 32 is non-rotatably connected to the connecting rod 31.

[0043] Further, in order to maintain the connection stability between the housing 10 and the mandrel 20, the operating rod 30 is non-rotatably slidably sleeved along the axis X with the mandrel 20, and a spring 50 is provided between the end cap 40 and the mandrel 20.

[0044] Furthermore, in order to facilitate the removal or cleaning after the sampled liquid solidifies, the outlines of the sampling port 21 and the opening 11 are the same.

[0045] Furthermore, for positioning during assembly, the end cap 40 is fixed to the housing 10 by a fastener 42 perpendicular to the axis X.

[0046] For those skilled in the art, various corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all such changes and deformations should fall within the protection scope of the claims of the present utility model.

Claims

1. A liquid sampling device, characterized in that: It includes a housing (10) in the form of a thin-walled cylindrical tubular structure. An opening (11) is provided at the bottom of the housing (10), and the contour edge of the opening (11) does not intersect the axis (X) of the housing (10). Inside the housing (10) near one end of the opening (11), there is a mandrel (20) rotatably and airtightly sleeved with the housing (10). The rotation axis of the mandrel (20) coincides with the axis (X). A sampling port (21) for accommodating the sampling liquid is provided at the position of the mandrel (20) corresponding to the opening (11), and the contour edge of the sampling port (21) does not intersect the axis (X). When the sampling port (21) is aligned with the opening (11), the sampling port (21) is in an open state. When the sampling port (21) faces away from the opening (11), the sampling port (21) is in a closed state.

2. The liquid sampling device according to claim 1, wherein: The bottom of the housing (10) is hemispherical.

3. The liquid sampling device according to claim 1, characterized in that: The outer surface of the housing (10) and the surface of the sampling port (21) are coated with a Teflon coating.

4. The liquid sampling device according to claim 1, characterized in that: A end cap (40) is provided at one end of the housing (10) far from the opening (11). A connecting rod hole (41) coaxial with the axis (X) is provided in the middle of the end cap (40). An operating rod (30) is rotatably sleeved in the connecting rod hole (41). One end of the operating rod (30) is connected to the mandrel (20), and the other end of the operating rod (30) is located on the side of the end cap (40) away from the housing (10).

5. The liquid sampling device according to claim 4, wherein: A marble (60) is provided between the operating rod (30) and the end cap (40). A marble groove (61) for accommodating the marble (60) is provided on the operating rod (30) or the end cap (40) corresponding to the marble (60).

6. The liquid sampling device according to claim 5, characterized in that: There are two marble grooves (61), and the two marble grooves (61) are arranged with a 180-degree rotation relative to the axis (X).

7. The liquid sampling device according to claim 4 or 5, characterized in that: The operating rod (30) includes a connecting rod (31) rotatably sleeved in the connecting rod hole (41). One end of the connecting rod (31) is connected to the mandrel (20), and a handle (32) is provided at the other end of the connecting rod (31). The handle (32) is non-rotatably connected to the connecting rod (31).

8. The liquid sampling device according to claim 4 or 5, characterized in that: The operating rod (30) is non-rotatably and slidably sleeved along the axis (X) with the mandrel (20), and a spring (50) is provided between the end cap (40) and the mandrel (20).

9. The liquid sampling device according to claim 1, characterized in that: The contours of the sampling port (21) and the opening (11) are the same.

10. The liquid sampling device according to claim 4, wherein: The end cap (40) is fixed to the housing (10) by a fastener (42) perpendicular to the axis (X).

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