Liquid sampler

Abstract

The utility model discloses a liquid sampler, which is characterized in that a sampling tank can be put into ultrapure water with different depths by adjusting a length-adjustable connecting part, then a hexagonal cylinder is taken to extend into a hexagonal groove to drive a lifting structure to operate, so that a piston rod extends into the sampling tank, and the length of the piston rod is adjusted in the moving process of the piston rod. According to the ultrapure water sampling device, the piston plates can be driven to leave the position where the water inlet pipe is closed initially, ultrapure water entering from the water inlet pipe is stored in the cavities between the piston plates, sampling of water at different depths and respective storage of samples at different depths are achieved, and the detection effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrapure water sampling, in particular to a liquid sampler. Background Art

[0002] Ultrapure water contains almost no impurities except water molecules. The impurities here include not only bad impurities such as bacteria and viruses, but also mineral trace elements required by the human body. Therefore, it is usually not used as drinking water for humans. It is usually used for ultrapure materials. The preparation process usually includes pretreatment filtration, deionization and reverse osmosis technology.

[0003] After production and storage of ultrapure water, the water in the water tank needs to be tested. Usually, operators take samples of the water at the water surface for testing. However, when the water tank is opened and exposed to air, the water quality will be affected, resulting in the water sample test results at the water surface being unable to objectively reflect the quality of the product. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model discloses a liquid sampler, which adopts the technical scheme of comprising a sampling tank, a water inlet pipe, a one-way valve, a detection insertion pipe, a valve, a valve disc, a matching threaded pipe, a piston rod, a sealing ring, a lifting structure, a piston plate and a bottom buffer structure. Four water inlet pipes are distributed on the left side of the sampling tank, in which a one-way valve is installed, and four detection insertion pipes are distributed on the right side, which are opened and closed by the valve disc controlled by the valve. The outer end of the insertion pipe is connected with a matching threaded pipe, the piston rod is inserted into the sampling tank, and a sealing ring is arranged above the sampling tank. The upper end of the piston rod is lifted by The lowering structure is installed, four piston plates are evenly distributed on the piston rod extending into the sampling tank, and a bottom buffer structure is arranged at the bottom of the piston rod. The water inlet pipe is sealed at the initial position of the piston plate. When sampling, the entire sampling tank is placed in an ultrapure water storage tank, and the piston rod is driven to move in the sampling tank by the lifting structure. When the movement drives the piston plate to leave the position sealing the water inlet pipe, ultrapure water enters the sampling tank through the one-way valve, and ultrapure water of different depths is temporarily stored in the chamber formed between different piston plates, so as to realize the extraction of samples of different depths.

[0005] As an optimal technical solution of the utility model, the lifting structure includes a lifting mounting plate, a rotating stud, a hexagonal notch, a fixed shaft and a length-adjustable connecting portion. The top of the piston rod is fixed on the lifting mounting plate. The left end of the lifting mounting plate is movably sleeved on the fixed shaft fixed to the top surface of the sampling tank. The rotating stud is rotatably installed on the right side of the top surface of the sampling tank. The top surface of the rotating stud is provided with a hexagonal notch. The right end of the lifting mounting plate is installed in cooperation with the rotating stud. An external hexagonal column is inserted into the hexagonal notch and rotated to drive the rotating stud to rotate, so that the lifting mounting plate installed therewith is lifted and lowered along the fixed shaft to drive the movement of the piston rod. The top of the fixed shaft is connected with a length-adjustable connecting portion. The purpose of setting this structure is to adjust the placement depth of the sampling tank in the ultrapure water tank according to needs.

[0006] As a preferred technical solution of the utility model, the length-adjustable connecting part includes a top extension rod, a sleeve rod, a locking screw, a top plate and a hexagonal through hole. The top of the fixed shaft is integrally formed with the top extension rod, and the bottom of the sleeve rod is opened. The sleeve rod is mounted on the top extension rod through the hole and locked by the locking screw. The top plate is fixed at the top of the sleeve rod, and a hexagonal through hole is opened at the right end of the top plate.

[0007] As a preferred technical solution of the utility model, the bottom buffer structure includes a bottom hole, a bottom column and a spring. A bottom hole is opened at the bottom of the piston rod, and a bottom column is integrally formed at the center of the inner bottom surface of the sampling tank. The bottom column extends into the bottom hole. The spring is integrally sleeved outside the bottom column, and its upper end is connected to the bottom surface of the bottom piston plate, and the lower end is connected to the inner bottom surface of the sampling tank.

[0008] As an optimal technical solution of the utility model, two grooves are opened on the side of the piston plate. In the initial state, the side wall of the piston plate between the two grooves closes the water inlet pipe. A rubber sealing ring and a side wall cleaning and scraping ring made of plastic material are respectively installed in the two grooves.

[0009] The beneficial effects of the utility model are as follows: the sampling tank can be placed in ultrapure water of different depths by adjusting the length of the adjustable connection part, and then the hexagonal column is taken and inserted into the hexagonal groove to drive the lifting structure to operate so that the piston rod is extended into the sampling tank. During the movement of the piston rod, the position of the piston plate can be driven to leave the initial position closing the water inlet pipe, and the ultrapure water entering from the water inlet pipe is stored in the chamber between the piston plates, which not only realizes the sampling of water at different depths but also separately stores samples at different depths, thereby improving the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0012] Figure 3 It is a schematic diagram of the cross-sectional structure of some components of the utility model.

[0013] In the figure: sampling tank 1, water inlet pipe 2, one-way valve 201, detection extension pipe 3, valve 4, valve disc 41, mounting threaded pipe 5, piston rod 6, sealing ring 601, lifting mounting plate 7, rotating stud 9, hexagonal notch 10, fixed shaft 11, top extension rod 111, sleeve rod 12, locking screw 13, top plate 14, hexagonal through hole 15, piston plate 61, bottom hole 62, bottom cylinder 63, spring 64, groove 65, rubber sealing ring 66, side wall cleaning scraper ring 67. DETAILED DESCRIPTION

[0014] Example 1

[0015] like Figures 1 to 3 As shown, the utility model discloses a liquid sampler, and the technical scheme adopted is, comprising a sampling tank 1, a water inlet pipe 2, a one-way valve 201, a detection insertion pipe 3, a valve 4, a valve disc 41, a matching threaded pipe 5, a piston rod 6, a sealing ring 601, a lifting structure, a piston plate 61 and a bottom buffer structure, four water inlet pipes 2 are distributed on the left side of the sampling tank 1, in which a one-way valve 201 is installed, four detection insertion pipes 3 are distributed on the right side, and the valve disc 41 controlled by the valve 4 is opened and closed, the outer end of the insertion pipe 3 is connected with the matching threaded pipe 5, the piston rod 6 is inserted into the sampling tank 1, and a sealing ring 601 is arranged above the sampling tank 1, the upper end of the piston rod 6 is installed by the lifting structure, four piston plates 61 are evenly distributed on the piston rod 6 inserted into the sampling tank 1, a bottom buffer structure is arranged at the bottom of the piston rod 6, and the piston plate 61 seals the water inlet pipe 2 at the initial position.

[0016] As a preferred technical solution of the utility model, the lifting structure includes a lifting mounting plate 7, a rotating stud 9, a hexagonal notch 10, a fixed shaft 11 and a length-adjustable connecting portion. The top of the piston rod 6 is fixed on the lifting mounting plate 7, and the left end of the lifting mounting plate 7 is movably sleeved on the fixed shaft 11 fixed to the top surface of the sampling tank 1. The rotating stud 9 is rotatably installed on the right side of the top surface of the sampling tank 1. The top surface of the rotating stud 9 is provided with a hexagonal notch 10. The right end of the lifting mounting plate 7 is cooperated with the rotating stud 9, and the top of the fixed shaft 11 is connected with a length-adjustable connecting portion.

[0017] As a preferred technical solution of the utility model, the specific setting method of the length-adjustable connecting part is that a top extension rod 111 is integrally formed at the top of the fixed shaft 11, and a hole is opened at the bottom of the sleeve rod 12, which is sleeved on the top extension rod 111 through the hole and locked by a locking screw 13, and a top plate 14 is fixed on the top of the sleeve rod 12, and a hexagonal through hole 15 is opened at the right end of the top plate 14.

[0018] As a preferred technical solution of the utility model, the bottom buffer structure is that a bottom hole 62 is opened at the bottom of the piston rod 6, and a bottom column 63 is integrally formed at the center of the inner bottom surface of the sampling tank 1. The bottom column 63 extends into the bottom hole 62, and the spring 64 is integrally sleeved outside the bottom column 63, and its upper end is connected to the bottom surface of the bottom piston plate 61, and the lower end is connected to the inner bottom surface of the sampling tank 1.

[0019] As a preferred technical solution of the utility model, two grooves 65 are opened on the side of the piston plate 61. In the initial state, the side wall of the piston plate 61 between the two grooves 65 closes the water inlet pipe 2, and a rubber sealing ring 66 and a side wall cleaning scraper ring 67 are respectively installed in the two grooves 65.

[0020] The working principle of the utility model is as follows: when in use, the sampling tank 1 is placed as a whole in a box storing ultrapure water. The relative position between the top extension rod 111 and the sleeve rod 12 can be adjusted according to the sampling requirements and locked with the locking screw 13. After the sampling tank 1 is placed in the water, the lifting mounting plate 7 is moved up and down along the fixed axis 11 by inserting the hexagonal column into the hexagonal notch 10 to rotate and drive the rotating stud 9 to rotate. When moving, the piston plate 61 is driven to leave the position closed to the water inlet pipe 2. Ultrapure water enters the sampling tank 1 through the one-way valve and water of different depths is stored in the chambers formed by each piston plate. When testing, the sampling tank 1 is taken out, and the probe of the detector extends into the sampling tank 1 for testing by opening the valve flap 41 of the valve 4. Before the test, the valve flap is in a closed state and the sealing plug can be screwed into the threaded pipe 5 for further sealing.

[0021] Components not described in detail herein are prior art.

[0022] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A liquid sampler, characterized in that: The invention comprises a sampling tank (1), a water inlet pipe (2), a one-way valve (201), a detection insertion pipe (3), a valve (4), a valve flap (41), a threaded pipe (5), a piston rod (6), a sealing ring (601), a lifting structure, a piston plate (61) and a bottom buffer structure; four water inlet pipes (2) are distributed on the left side of the sampling tank (1), wherein the one-way valve (201) is installed, and four detection insertion pipes (3) are distributed on the right side, which are opened and closed by the valve flap (41) controlled by the valve (4); The outer end of the insertion tube (3) is connected to a threaded tube (5); the piston rod (6) is inserted into the sampling tank (1), and a sealing ring (601) is arranged above the sampling tank (1); the upper end of the piston rod (6) is installed by a lifting structure, and four piston plates (61) are evenly distributed on the piston rod (6) inserted into the sampling tank (1); a bottom buffer structure is arranged at the bottom of the piston rod (6); the piston plate (61) seals the water inlet pipe (2) at its initial position.

2. A liquid sampler according to claim 1, characterized in that: The lifting structure comprises a lifting installation plate (7), a rotating stud (9), a hexagonal notch (10), a fixed shaft (11) and a length-adjustable connecting portion; the top of the piston rod (6) is fixed on the lifting installation plate (7); the left end of the lifting installation plate (7) is movably sleeved on the fixed shaft (11) fixed on the top surface of the sampling tank (1); the rotating stud (9) is rotatably installed on the right side of the top surface of the sampling tank (1), and the top surface of the rotating stud (9) is provided with a hexagonal notch (10); the right end of the lifting installation plate (7) is mounted in cooperation with the rotating stud (9); and the top of the fixed shaft (11) is connected with a length-adjustable connecting portion.

3. A liquid sampler according to claim 2, characterized in that: The length-adjustable connection portion comprises a top extension rod (111), a sleeve rod (12), a locking screw (13), a top plate (14) and a hexagonal through hole (15); the top of the fixed shaft (11) is integrally formed with the top extension rod (111); the sleeve rod (12) has a hole at the bottom, is sleeved on the top extension rod (111) through the hole and is locked by the locking screw (13); the top plate (14) is fixed to the top of the sleeve rod (12); and the right end of the top plate (14) is provided with a penetrating hexagonal through hole (15).

4. A liquid sampler according to claim 1, characterized in that: The bottom buffer structure comprises a bottom hole (62), a bottom column (63) and a spring (64); the bottom of the piston rod (6) is provided with a bottom hole (62); a bottom column (63) is integrally formed at the center of the inner bottom surface of the sampling tank (1), and the bottom column (63) extends into the bottom hole (62); the spring (64) is integrally sleeved outside the bottom column (63), the upper end of which is connected to the bottom surface of the piston plate (61) at the bottom, and the lower end is connected to the inner bottom surface of the sampling tank (1).

5. A liquid sampler according to claim 1, characterized in that: The piston plate (61) has two grooves (65) on its side. In the initial state, the side wall of the piston plate (61) between the two grooves (65) seals the water inlet pipe (2). A rubber sealing ring (66) and a side wall cleaning and scraping ring (67) are respectively installed in the two grooves (65).

6. A liquid sampler according to claim 5, characterized in that: The side wall cleaning scraper ring (67) is made of plastic material.

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