Liquid sampler

Abstract

The utility model discloses a liquid sampler. The liquid sampler comprises a columnar frame, a buoy, a sampling assembly and a chain, wherein the columnar frame extends along the vertical direction; the buoy and the sampling assembly are positioned in the frame; the sampling assembly comprises a sampling cavity fixedly held in the frame, a piston cavity located above the sampling cavity and a pull rod extending in the vertical direction, the sampling cavity is provided with a liquid inlet located in the top, the liquid inlet is communicated with the sampling cavity and the piston cavity, the lower portion of the pull rod is located in the piston cavity and abuts against the liquid inlet, and the lower portion of the pull rod is located in the piston cavity and abuts against the liquid inlet. The upper portion of the pull rod is exposed out of the top of the piston cavity and connected to the chain. After the liquid sampler is immersed in liquid, the buoy floats on the surface of the liquid, the columnar frame floats in the liquid in the vertical direction, and the buoy stretches the pull rod through the chain, so that the lower part of the pull rod is separated from the liquid inlet; therefore, automatic sampling of the sampling assembly in the liquid is realized, unnecessary personnel operation is reduced, and injury of the liquid to personnel is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sampler technical field especially relates to a liquid sampler for a variety of liquid sampling. BACKGROUND

[0002] When carrying out liquid sampling operation, part liquid sampling condition is harsh, and staff cannot directly touch liquid, and the liquid sampler can be used as a good carrier to carry such liquid, due to small volume, and the liquid sampler can adapt to most challenging environments. The liquid sampler main part is pure mechanical structure, and the normal use under various conditions can be guaranteed. The core of the liquid sampler is a sampling container, in order to adapt to different sampling conditions, the sampling container can meet different needs by adjusting the size. However, how to avoid liquid damage to staff during sampling of the sampling container becomes a problem to be solved.

[0003] Therefore, a new liquid sampler is expected to overcome the above-mentioned defects. UTILITY MODEL CONTENT

[0004] The utility model discloses a liquid sampler, which can sample in liquid automatically, reduce unnecessary personnel operation and avoid liquid damage to personnel.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a liquid sampler, comprising a columnar frame extending in the vertical direction, a float and a sampling assembly located in the frame, and a chain connected between the float and the sampling assembly. The sampling assembly comprises a sampling cavity held in the frame, a piston cavity located above the sampling cavity, and a pull rod extending in the vertical direction. The sampling cavity is provided with a liquid inlet at the top, and the liquid inlet communicates the sampling cavity with the piston cavity. The lower part of the pull rod is located in the piston cavity and abuts against the liquid inlet. The upper part of the pull rod is exposed at the top of the piston cavity and connected to the chain. After the liquid sampler is immersed in liquid, the float floats on the surface of the liquid, the columnar frame floats in the liquid in the vertical direction, and the float stretches the pull rod in the vertical direction through the chain, so that the lower part of the pull rod is separated from the liquid inlet.

[0006] In the preferred embodiment, the frame is provided with a hollow part located in the middle section, and the float and the sampling assembly are located in the hollow part. The hollow part is provided with a plate-shaped limiting part extending in the horizontal direction, and the sampling assembly is fixed on the limiting part.

[0007] In a preferred embodiment, the hollow portion is provided with a baffle plate above the limiting portion, the float is provided with a spherical portion above the baffle plate and an extension portion extending downward from the spherical portion, the extension portion passes through the baffle plate downward and is connected to the upper end of the chain.

[0008] In a preferred embodiment, the chain is provided with a pin needle at the lower end, the pin needle is inserted and fixed to the upper end of the pull rod.

[0009] In a preferred embodiment, the frame is provided with a counterweight portion at the lower end, and after the liquid sampler is immersed in the liquid, the counterweight portion is submerged in the liquid.

[0010] In a preferred embodiment, the pull rod is provided with a rod portion extending vertically and a tapered plug at the lower end of the rod portion, the piston cavity is provided with a through hole at the top, the rod portion passes through the through hole and extends into the piston cavity, and the plug abuts against the liquid inlet.

[0011] In a preferred embodiment, the sampling assembly further includes a spring sleeved around the outer periphery of the rod portion, the upper end of the spring abuts against the inner wall of the top of the piston cavity, and the lower end of the spring abuts against the rear end face of the plug.

[0012] In a preferred embodiment, the sampling assembly further includes a sleeve sleeved around the outer periphery of the rod portion, the sleeve is above the spring and is held in the through hole of the piston cavity.

[0013] In a preferred embodiment, after the liquid sampler is immersed in the liquid, the chain stretches the pull rod so that the plug is separated from the liquid inlet and the spring is compressed by the plug; after the liquid sampler is taken out of the liquid, the pull rod is released, the spring rebounds and pushes the plug to abut against the liquid inlet.

[0014] In a preferred embodiment, the piston cavity is provided with a plurality of slotted openings on the circumferential side wall.

[0015] Compared with the prior art, the liquid sampler has the advantages that: the sampling assembly comprises a sampling cavity fixed in the frame, a piston cavity located above the sampling cavity and a pull rod extending vertically, the sampling cavity is provided with a liquid inlet at the top, the liquid inlet communicates the sampling cavity with the piston cavity, the lower part of the pull rod is located in the piston cavity and abuts against the liquid inlet, the upper part of the pull rod is exposed at the top of the piston cavity and connected to the chain, after the liquid sampler is immersed in the liquid, the float floats on the liquid surface, the columnar frame always floats vertically in the liquid, and the float stretches the pull rod vertically through the chain, so that the lower part of the pull rod is separated from the liquid inlet, thereby realizing self-sampling of the sampling assembly in the liquid, reducing unnecessary personnel operation and avoiding damage of the liquid to the personnel. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the front view of the liquid sampler in the preferred embodiment of the utility model.

[0017] Figure 2 is Figure 1 the front view of the float and the sampling assembly in the liquid sampler. DETAILED DESCRIPTION

[0018] Please refer to Figures 1 to 2 The preferred embodiment of the utility model discloses a kind of liquid sampler 100, which is used for sampling operation in multiple liquids. Some sampling conditions in multiple liquids are harsh, personnel cannot directly touch liquid, the liquid sampler 100 can sample in liquid, reduce unnecessary personnel operation, avoid damage of liquid to personnel.

[0019] The liquid sampler 100 includes columnar frame 10 extending vertically, float 20 and sampling assembly 30 located in frame 10, and chain 40 connected between float 20 and sampling assembly 30. The frame 10 is provided with hollow part 11 located in the middle section and counterweight part 12 located at the lower end, and the float 20 and the sampling assembly 30 are located in the hollow part 11. The setting of the counterweight part 12 makes the lower section of the frame 10 heavier than the upper section, and when the liquid sampler 100 is put into the liquid, the counterweight part 12 is immersed in the liquid, so that the frame 10 always keeps vertical state in the liquid.

[0020] The hollow part 11 is provided with plate-shaped limiting part 111 extending transversely and baffle 112 located above the limiting part 111, and the sampling assembly 30 is fixed on the limiting part 111, so that the sampling assembly 30 moves synchronously with the frame 10.

[0021] The float 20 is provided with a spherical portion 21 above the baffle 112 and an extension portion 22 extending downward from the spherical portion 21, the extension portion 22 downwardly penetrating the baffle 112 and being connected to the upper end of the chain 40. After the liquid sampler 100 is immersed in the liquid, the spherical portion 21 of the float 20 always floats on the surface of the liquid.

[0022] The sampling assembly 30 includes a sampling cavity 31 held in the frame 10, a piston cavity 32 above the sampling cavity 31, and a pull rod 33 extending vertically, the sampling cavity 31 being held on the limiting portion 111.

[0023] The sampling cavity 31 is provided with a liquid inlet 310 at the top, the liquid inlet 310 communicating the sampling cavity 31 and the piston cavity 32. The piston cavity 32 is integrally formed above the sampling cavity 31 and is provided with a through hole 321 at the top and a plurality of slots 322 on the circumferential side wall, the slots 322 communicating the inside of the piston cavity 32 and the hollow portion 11; therefore, after the liquid sampler 100 is immersed in the liquid and the liquid inlet 310 of the sampling cavity 31 is opened, the liquid outside the liquid sampler 100 can flow into the sampling cavity 31 through the hollow portion 11, the slots 322 and the liquid inlet 310, thereby completing the sampling of the liquid.

[0024] The lower part of the pull rod 33 is located in the piston cavity 32, the upper part of the pull rod 33 is exposed on the top of the piston cavity 32 through the through hole 321 and is connected to the chain 40. In this embodiment, the chain 40 is provided with a pin 41 at the lower end, the pin 41 is inserted and fixed to the upper end of the pull rod 33. When the liquid sampler 100 is not immersed in the liquid, the lower part of the pull rod 33 abuts against the liquid inlet 310 to close the liquid inlet 310, at this time, the liquid outside cannot flow into or out of the sampling cavity 31. Specifically, the pull rod 33 is provided with a rod portion 331 extending vertically and a tapered plug 332 at the lower end of the rod portion 331, the rod portion 331 penetrates the through hole 321 and extends into the piston cavity 32, the plug 332 abuts against the liquid inlet 310.

[0025] The sampling assembly 30 further includes a spring 34 and a sleeve 35 sleeved on the outer periphery of the rod portion 33. The upper end of the spring 34 abuts against the inner wall of the top of the piston cavity 32, and the lower end of the spring 34 abuts against the rear end face of the plug 332, so that the spring 34 always downwardly pushes the plug 332 of the pull rod 33; the sleeve 35 is located above the spring 34 and is held in the through hole 321 of the piston cavity 32, so as to seal the gap between the rod portion 331 and the through hole 321.

[0026] When the liquid sampler 100 is immersed in liquid, the float 20 always floats on the surface of the liquid, the columnar frame 10 always floats vertically in the liquid, and the float 20 pulls the pull rod 33 vertically through the chain 40, so that the latch 332 of the pull rod 33 is separated from the liquid inlet 310; at this time, the spring 34 is compressed by the latch 332, and the liquid inlet 310 of the sampling cavity 31 is opened, and liquid can flow freely into the sampling cavity 31 to complete the sampling of the liquid.

[0027] When the liquid sampler 100 is taken out of the liquid, the pull rod 33 is released, the spring 34 rebounds and pushes the latch 332 to press against the liquid inlet 310; at this time, the liquid in the sampling cavity 31 cannot flow out. Thus, the sampling assembly 30 realizes self-sampling in the liquid, reduces unnecessary personnel operation, and avoids injury to personnel by liquid.

[0028] In the utility model, the sampling assembly 30 includes a sampling cavity 31 held in the frame 10, a piston cavity 32 located above the sampling cavity 31, and a pull rod 33 extending vertically, the sampling cavity 31 is provided with a liquid inlet 310 at the top, the liquid inlet 310 communicates the sampling cavity 31 and the piston cavity 32, the lower part of the pull rod 33 is located in the piston cavity 32 and abuts against the liquid inlet 310, the upper part of the pull rod 33 is exposed above the top of the piston cavity 32 and is connected to the chain 40. When the liquid sampler 100 is immersed in liquid, the float 20 floats on the surface of the liquid, the columnar frame 10 always floats vertically in the liquid, and the float 20 pulls the pull rod 33 vertically through the chain 40, so that the lower part of the pull rod 33 is separated from the liquid inlet 310; thereby realizing self-sampling of the sampling assembly 30 in the liquid, reducing unnecessary personnel operation, and avoiding injury to personnel by liquid.

[0029] In summary, the above is only a preferred embodiment of the utility model, and should not limit the scope of the utility model, that is, any simple equivalent changes and modifications made according to the claims and description of the utility model should still fall within the scope of the utility model patent.

Claims

1. A liquid sampler comprising a columnar frame extending vertically, a float and sampling assembly located within the frame, and a chain connected between the float and the sampling assembly; characterized by: The sampling assembly comprises a sampling cavity held in the frame, a piston cavity above the sampling cavity, and a vertically extending pull rod, the sampling cavity is provided with a liquid inlet at the top, the liquid inlet communicates the sampling cavity with the piston cavity, the lower part of the pull rod is located in the piston cavity and abuts against the liquid inlet, the upper part of the pull rod is exposed at the top of the piston cavity and connected to the chain; after the liquid sampler is immersed in liquid, the float floats on the liquid surface, the columnar frame floats vertically in the liquid, and the float pulls the pull rod vertically through the chain so that the lower part of the pull rod is separated from the liquid inlet.

2. The liquid sampler of claim 1, wherein: The frame is provided with a hollow part at the middle section, the float and the sampling assembly are located in the hollow part, the hollow part is provided with a plate-shaped limiting part extending transversely, and the sampling assembly is fixed on the limiting part.

3. The liquid sampler of claim 2, wherein: The hollow part is provided with a baffle above the limiting part, the float is provided with a spherical part above the baffle and an extension part extending downward from the spherical part, the extension part passes downward through the baffle and is connected to the upper end of the chain.

4. The liquid sampler of claim 3, wherein: The chain is provided with a pin needle at the lower end, the pin needle is inserted and fixed to the upper end of the pull rod.

5. The liquid sampler of claim 2, wherein: The frame is provided with a counterweight part at the lower end, and after the liquid sampler is immersed in liquid, the counterweight part is immersed in liquid.

6. The liquid sampler of claim 1, wherein: The pull rod is provided with a rod part extending vertically and a conical plug at the lower end of the rod part, the piston cavity is provided with a through hole at the top, the rod part passes through the through hole and extends into the piston cavity, and the plug abuts against the liquid inlet.

7. The liquid sampler of claim 6, wherein: The sampling assembly comprises a spring sleeved on the outer periphery of the rod part, the upper end of the spring abuts against the inner wall of the top of the piston cavity, and the lower end of the spring abuts against the rear end face of the plug.

8. The liquid sampler of claim 7, wherein: The sampling assembly further comprises a sleeve sleeved on the outer periphery of the rod part, the sleeve is located above the spring and held in the through hole of the piston cavity.

9. The liquid sampler of claim 7, wherein: After the liquid sampler is immersed in liquid, the chain pulls the pull rod so that the plug is separated from the liquid inlet and the spring is compressed by the plug; after the liquid sampler is taken out of liquid, the pull rod is released, the spring rebounds and pushes the plug to abut against the liquid inlet.

10. The liquid sampler of claim 6, wherein: The piston cavity is provided with a plurality of grooves on the circumferential side wall.

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