Sampler capable of measuring liquid

Abstract

The utility model relates to a measurable liquid sampler, which aims to solve the problem that a sampler which can accurately sample and is convenient to operate is lacked at present, according to the scheme, a suction tube is a transparent tube, scales are marked on the outer wall of the suction tube, an inverted conical hollow suction nozzle is fixed on the suction tube and is communicated with a suction opening of the suction tube, and threads are arranged on the inner wall of the suction tube; one end of the push rod is inserted into the suction pipe, one end of the push rod is connected with the rubber plug, the rubber plug is arranged in the liquid suction cavity and is adjacent to the positioning pad, and the positioning pad is arranged in the suction pipe and is matched with the positioning pad; the push rod is slidably connected with the positioning pad, the shape of the middle of the positioning pad is matched with the outer wall of the push rod, a pressing plate integrated with the push rod is arranged in the middle of the push rod, the pressing plate is arranged in the movable cavity and adjacent to the limiting ring, and the spring is arranged between the pressing plate and the positioning pad. According to the scheme, high-value samples are accurately sampled, sampling waste can be reduced, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid sampling, and particularly relates to a metering liquid sampler. Background Art

[0002] The samplers currently used in the industrial field are for simply sampling the liquid in a container, which can only ensure that samples can be collected, but it is not easy to control the amount of sampling. Even if there are scales marked on the sampler, it is difficult to ensure accuracy without delicate operation during sampling. Usually, the liquid that enters the sampler will not flow back to the original container but is treated as waste liquid because flowing back to the original container may cause the liquid in the original container to be contaminated. When sampling some high-value liquids, it is impossible to accurately measure during sampling. For example, taking too much and causing waste liquid will result in economic losses. Currently, there is a lack of a sampler that can accurately sample and is easy to operate. Summary of the Utility Model

[0003] The purpose of the utility model patent: The utility model is to solve the problem that there is currently a lack of a sampler that can accurately sample and is easy to operate. The utility model provides a metering liquid sampler.

[0004] The purpose of the utility model is achieved as follows: A metering liquid sampler includes a straw, an inverted conical hollow nozzle, a positioning pad, a push rod, a rubber plug and a spring;

[0005] The straw is a transparent tube, with scales marked on the outer wall of the straw. One end of the straw is provided with a suction port. The inverted conical hollow nozzle is fixed on the straw and communicated with the suction port of the straw. The inner wall of the straw is provided with threads; the positioning pad is arranged in the straw and matches with the threads. The positioning pad divides the straw into a liquid suction cavity and a movable cavity from one end to the other end. The other end of the straw is integrally provided with a limit ring. One end of the push rod is inserted into the straw. One end of the push rod is connected with the rubber plug. The rubber plug is arranged in the liquid suction cavity and adjacent to the positioning pad. The push rod is slidably connected with the positioning pad. The shape of the middle part of the positioning pad matches the outer wall of the push rod. When the push rod rotates, the positioning pad rotates with the push rod and displaces in the straw. The middle part of the push rod is integrally provided with a pressing plate. The pressing plate is arranged in the movable cavity and adjacent to the limit ring. The spring is arranged between the pressing plate and the positioning pad.

[0006] Further, the cross-section of the push rod is cross-shaped.

[0007] Still further, the other end of the push rod is integrally provided with a limit cap.

[0008] Further, the straw includes a thin tube section and a thick tube section;

[0009] The thin tube section and the thick tube section are integrally arranged. The inverted conical hollow nozzle is arranged on the thin tube section. The push rod is arranged in the thick tube section.

[0010] Furthermore, an arc-shaped groove is provided on the outer wall of the straw.

[0011] Furthermore, the scale includes a liquid measurement scale and a cavity measurement scale;

[0012] The liquid measurement scale is set above the cavity measurement scale. The liquid measurement scale is set on the outer walls of the thin tube section and the thick tube section, and the cavity measurement scale is set on the outer wall of the thick tube section. The liquid measurement scale is used to represent the content of the inhaled liquid, and the cavity measurement scale is used to represent the content of the liquid that the rubber plug's movable area can hold.

[0013] Beneficial effects:

[0014] When using the sampler of this solution, hold the straw with one hand and rotate the push rod with the other hand to adjust the position of the positioning pad, thereby adjusting the maximum space in the liquid suction cavity. According to the amount of sample to be taken, align one end of the rubber plug with the scale. Press the push rod to move the rubber plug to the position closest to the suction port. At this time, align the inverted conical hollow suction nozzle with the liquid level to be sampled. Release the push rod, and the spring makes the push rod reset. The liquid in the liquid suction cavity is filled. At this time, the liquid in the straw is approximately the same as the amount of sample to be taken. The sampling is relatively accurate, easy to operate, will not cause excessive sampling, and thus reduces the waste caused by excessive sampling. This solution is more suitable for sampling high-value samples, with accurate sampling, reduced sampling waste, and easy operation. Description of the drawings

[0015] Figure 1 is a schematic diagram of a liquid metering sampler of the present utility model;

[0016] Figure 2 is an internal schematic diagram of a liquid metering sampler of the present utility model;

[0017] Figure 3 is a schematic diagram of the scale part of the present utility model;

[0018] Figure 4 is an internal schematic diagram (pressed state) of a liquid metering sampler of the present utility model.

[0019] In the figure: 1, straw; 1-1, thin tube section; 1-2, thick tube section; 2, scale; 2-1, liquid measurement scale; 2-2, cavity measurement scale; 3, inverted conical hollow suction nozzle; 4, positioning pad; 5, limit ring; 6, rubber plug; 7, liquid suction cavity; 8, movable cavity; 9, pressing plate; 10, push rod; 11, spring; 12, limit cap; 13, arc-shaped groove. Specific embodiments

[0020] Combined with the attached Figure 1 The following specific embodiments are described:

[0021] Embodiment 1: A metering liquid sampler, which comprises a straw 1, an inverted conical hollow suction nozzle 3, a positioning pad 4, a push rod 10, a rubber plug 6 and a spring 11;

[0022] The straw 1 is a transparent tube, and a scale 2 is marked on the outer wall of the straw 1. One end of the straw 1 is provided with a suction port. The inverted conical hollow suction nozzle 3 is fixed on the straw 1 and communicated with the suction port of the straw. The inner wall of the straw 1 is provided with threads; the positioning pad 4 is arranged in the straw 1 and matched with the threads. The positioning pad 4 divides the straw 1 into a liquid suction cavity 7 and a movable cavity 8 from one end to the other end. The other end of the straw 1 is integrally provided with a limit ring 5. One end of the push rod 10 is inserted into the straw 1. One end of the push rod 10 is connected with the rubber plug 6. The rubber plug 6 is arranged in the liquid suction cavity 7 and adjacent to the positioning pad 4. The push rod 10 is slidably connected with the positioning pad 4. The shape of the middle part of the positioning pad 4 is matched with the outer wall of the push rod 10. When the push rod 10 rotates, the positioning pad 4 rotates with the push rod 10, and the positioning pad 4 displaces in the straw 1. A pressing plate 9 is integrally arranged in the middle of the push rod 10. The pressing plate 9 is arranged in the movable cavity 8 and adjacent to the limit ring 5. The spring 11 is arranged between the pressing plate 9 and the positioning pad 4.

[0023] In this embodiment: When using the sampler of this solution, hold the straw with one hand and rotate the push rod with the other hand to adjust the position of the positioning pad, and then adjust the maximum space in the liquid suction cavity. According to the amount of liquid to be sampled, align one end of the rubber plug with the scale. Press the push rod to move the rubber plug to the position closest to the suction port. The spring is compressed. At this time, align the inverted conical hollow suction nozzle with the liquid level to be sampled, and release the push rod. After the pressing plate is reset under the action of the spring, it abuts against the limit ring.

[0024] Other embodiments are the same as Embodiment 1.

[0025] Embodiment 2: A metering liquid sampler, wherein the cross section of the push rod 10 is cross-shaped.

[0026] In this embodiment: The cross section of the push rod is cross-shaped, which saves raw materials during manufacturing and can drive the positioning pad to rotate in cooperation with the positioning pad.

[0027] Other embodiments are the same as Embodiment 1.

[0028] Embodiment 3: A metering liquid sampler, wherein the other end of the push rod 10 is integrally provided with a limit cap 12.

[0029] In this embodiment: The other end of the push rod is integrally provided with a limit cap, which is convenient for pressing operation with the thumb.

[0030] Other embodiments are the same as Embodiment 1.

[0031] Embodiment 4: A metering liquid sampler, wherein the straw 1 comprises a thin tube section 1-1 and a thick tube section 1-2;

[0032] The thin tube section 1-1 and the thick tube section 1-2 are integrally arranged. The inverted conical hollow suction nozzle 3 is arranged on the thin tube section 1-1, and the push rod 10 is arranged inside the thick tube section 1-2.

[0033] In this embodiment: By connecting the thick tube with the straw, a smaller liquid sampling volume can occupy a larger straw length, avoiding the difficulty of inserting a too-short straw into the container for operation. Moreover, the thick tube section can ensure an adequate liquid sampling volume.

[0034] Other embodiments are the same as the first specific embodiment.

[0035] Specific embodiment five: A liquid metering sampler, with an arc-shaped groove 13 provided on the outer wall of the straw 1.

[0036] In this embodiment: An arc-shaped groove is provided on the outer wall of the straw, facilitating the clamping by the index finger and thumb, so that after adjusting the positioning pad, the liquid sampling operation can be carried out with one hand.

[0037] Other embodiments are the same as the first specific embodiment.

[0038] Specific embodiment six: A liquid metering sampler, the scale 2 includes a liquid metering scale 2-1 and a cavity metering scale 2-2;

[0039] The liquid metering scale 2-1 is arranged above the cavity metering scale 2-2. The liquid metering scale 2-1 is arranged on the outer walls of the thin tube section 1-1 and the thick tube section 1-2, and the cavity metering scale 2-2 is arranged on the outer wall of the thick tube section. The liquid metering scale 2-1 is used to represent the content of the inhaled liquid, and the cavity metering scale 2-2 is used to represent the liquid content that the rubber plug 6's movable area can hold.

[0040] In this embodiment: The liquid metering scale is arranged above the cavity metering scale. The liquid scale metering scale is arranged on the outer walls of the thin tube section and the thick tube section, and the cavity metering scale is arranged on the outer wall of the thick tube section. The liquid metering scale is used to represent the content of the inhaled liquid, and the cavity metering scale is used to represent the liquid content that the rubber plug's movable area can hold. During operation, adjust the positioning pad to align the rubber plug with the cavity metering scale, and then carry out the liquid sampling operation. After taking the liquid, observe the liquid metering scale. At this time, the two scales should not differ much. The cavity metering scale is used to measure the emptying volume of the cavity of the liquid suction chamber, that is, the amount of liquid suctioned, and the liquid metering scale is used to check the liquid sampling volume after taking the liquid.

[0041] Other embodiments are the same as the first specific embodiment.

Claims

1. A quantifiable liquid sampler, characterized in that: It comprises a suction pipe (1), an inverted cone-shaped hollow suction nozzle (3), a positioning pad (4), a push rod (10), a rubber stopper (6) and a spring (11); The straw (1) is a transparent tube. The outer wall of the straw (1) is marked with scales (2). One end of the straw (1) is provided with a suction port. An inverted cone-shaped hollow suction nozzle (3) is fixed on the straw (1) and communicated with the suction port of the straw. The inner wall of the straw (1) is provided with threads. A positioning pad (4) is arranged in the straw (1) and cooperates with the threads. The positioning pad (4) divides the straw (1) from one end to the other end into a liquid suction chamber (7) and a movable chamber (8). The other end of the straw (1) is provided with a limit ring (5) integrally arranged therewith. One end of a push rod (10) is inserted into the straw (1). One end of the push rod (10) is connected to a rubber The rubber plug (6) is arranged in the liquid suction cavity (7) and is adjacent to the positioning pad (4). The push rod (10) is slidably connected to the positioning pad (4). The shape of the middle part of the positioning pad (4) matches the outer wall of the push rod (10). When the push rod (10) rotates, the positioning pad (4) rotates with the push rod (10), and the positioning pad (4) is displaced in the suction tube (1). A pressing plate (9) is provided in the middle part of the push rod (10) and is integrally arranged therewith. The pressing plate (9) is arranged in the movable cavity (8) and is adjacent to the limiting ring (5). The spring (11) is arranged between the pressing plate (9) and the positioning pad (4).

2. A quantifiable liquid sampler according to claim 1, characterized in that: The cross section of the push rod (10) is cross-shaped.

3. A quantifiable liquid sampler according to claim 1, characterized in that: The other end of the push rod (10) is integrally provided with a limiting cap (12).

4. A quantifiable liquid sampler according to claim 1, characterized in that: The straw (1) comprises a thin tube section (1-1) and a thick tube section (1-2); The thin tube section (1-1) and the thick tube section (1-2) are arranged in one piece, the inverted cone-shaped hollow suction nozzle (3) is arranged on the thin tube section (1-1), and the push rod (10) is arranged inside the thick tube section (1-2).

5. A quantifiable liquid sampler according to claim 4, characterized in that: The outer wall of the straw (1) is provided with a circle of arc-shaped grooves (13).

6. A quantifiable liquid sampler according to claim 4, characterized in that: The scale (2) includes a liquid measurement scale (2-1) and a cavity measurement scale (2-2); The liquid metering scale (2-1) is arranged above the cavity metering scale (2-2); the liquid metering scale (2-1) is arranged on the outer walls of the thin tube section (1-1) and the thick tube section (1-2); the cavity metering scale (2-2) is arranged on the outer wall of the thick tube section; the liquid metering scale (2-1) is used to indicate the content of the inhaled liquid; and the cavity metering scale (2-2) is used to indicate the content of the liquid that can be contained in the active area of ​​the rubber stopper (6).

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