Liquid sampling device

Abstract

The utility model discloses a liquid sampling device which comprises a piston assembly, the piston assembly comprises a piston cylinder, a piston rod and a piston block, the piston cylinder is matched with the piston block, the piston block fixes the piston rod, the piston rod penetrates through the upper end of the piston cylinder, the upper end of the piston rod is fixedly connected with a pull ring, a cover body is fixed on the upper side of the piston cylinder, and the pull ring is arranged in the cover body. The pipette is connected with the lower end of a piston cylinder of the piston assembly and is connected with the liquid outlet pipe; the liquid outlet pipe is an L-shaped pipe, a transverse pipe of the liquid outlet pipe is fixedly communicated with the upper portion of the liquid suction pipe, and a vertical pipe of the liquid outlet pipe is connected with the supporting assembly. The utility model relates to the technical field of liquid sampling, in particular to a liquid sampling device. The utility model provides a liquid sampling device which comprises a piston assembly, a liquid suction pipe, a liquid outlet pipe and a supporting assembly, and through interaction of the assemblies, a rapid, accurate and clean sampling process is achieved.

Description

Technical Field

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

[0002] Liquid sampling devices are usually used to extract liquid samples from containers for testing or analysis. Traditional sampling devices may have problems such as complex operation, unstable structure, or low sampling efficiency. Therefore, it is of great significance to develop a device with simple structure, convenient operation, and fast and accurate sampling. Summary of the invention

[0003] The utility model provides a liquid sampling device, which comprises a piston assembly, a liquid suction tube, a liquid outlet tube and a supporting assembly. Through the interaction of these assemblies, a fast, accurate and clean sampling process is achieved.

[0004] The liquid sampling device comprises a piston assembly, the piston assembly comprises a piston cylinder, a piston rod and a piston block, the piston cylinder matches the piston block, the piston block fixes the piston rod, the piston rod passes through the upper end of the piston cylinder and the upper end is fixedly connected to a pull ring, the upper side of the piston cylinder is fixed with a cover body, the pull ring is arranged in the cover body, and a liquid pipette is connected to the lower end of the piston cylinder of the piston assembly, and the liquid pipette is connected to a liquid outlet pipe;

[0005] The liquid outlet pipe is an L-shaped pipe, the horizontal pipe of the liquid outlet pipe is fixedly connected to the upper part of the liquid suction pipe, and the vertical pipe of the liquid outlet pipe is connected to the supporting assembly.

[0006] As a further limitation of the present technical solution, the supporting assembly includes a collar, a straight groove rod, a swing rod, a supporting rod and a supporting block. The collar is arranged around the vertical tube of the liquid outlet pipe. The arc-shaped wall surface of the collar is fixedly connected to the symmetrical straight groove rods. A limiting shaft is respectively passed through the slide groove of each straight groove rod. The outer end of each limiting shaft is respectively fixedly connected to one end of the swing rod. The other end of each swing rod is respectively hinged to a U-shaped block. The U-shaped block is fixed to the outer wall of the vertical tube of the liquid outlet pipe. The other end of each swing rod is respectively fixedly connected to the upper end of the supporting rod. The other end of each support rod is respectively fixedly connected to the supporting block.

[0007] As a further limitation of the present technical solution, each swing rod and support rod is arranged in a V shape.

[0008] As a further limitation of the technical solution, the collar is threadedly connected to a top screw, and the top screw can support the liquid outlet tube.

[0009] As a further limitation of the present technical solution, a filter assembly is provided at the lower end of the pipette.

[0010] As a further limitation of the present technical solution, the filter assembly includes a cylinder, a group of filter holes evenly arranged in a circle are provided on the lower side of the cylinder, the cylinder matches the pipette, the upper end of the arc-shaped wall of the cylinder is fixedly connected to symmetrical ear blocks, the upper end of each ear block is fixed with bolts, each bolt passes through a limit block, each limit block is fixedly connected to the pipette, and each bolt is threadedly connected to a nut.

[0011] As a further limitation of the present technical solution, the other end of each limiting shaft is respectively fixedly connected to a stopper.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] Simple structure, easy to operate and maintain, the design of piston assembly and pipette ensures the accuracy and efficiency of sampling;

[0014] The addition of the support assembly improves the stability of the entire device, making it more suitable for on-site use and preventing liquid leakage caused by the liquid outlet tube coming out;

[0015] A filter assembly is provided to allow liquid to pass through while blocking impurities, ensuring that the sample obtained is pure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 For the utility model Figure 1 A partial enlarged view of the middle A;

[0019] Figure 3 For the utility model Figure 1 A partial enlarged view of point B in the middle;

[0020] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 5 The three-dimensional structure of the utility model is shown in FIG. Figure 3 ;

[0022] Figure 6 For the utility model Figure 5 A partial enlarged view of point C in the middle.

[0023] In the figure: 1-pull ring, 2-cover body, 3-piston assembly, 4-liquid outlet pipe, 5-liquid suction pipe, 6-collar, 61-top screw, 7-straight groove rod, 8-stopper, 9-swing rod, 10-U-shaped block, 11-swing rod, 12-support block, 13-bolt, 14-nut, 15-limiting block, 16-ear block, 17-cylinder, 18-filter hole. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-Figure 6 The utility model is further described with implementation modes.

[0025] The specific embodiments of the present utility model are:

[0026] Embodiment 1:

[0027] A liquid sampling device, comprising a piston assembly 3, wherein the piston assembly 3 comprises a piston cylinder, a piston rod and a piston block, wherein the piston cylinder matches the piston block, wherein the piston block fixes the piston rod, wherein the piston rod passes through the upper end of the piston cylinder and the upper end is fixedly connected to a pull ring 1, wherein a cover body 2 is fixed on the upper side of the piston cylinder, wherein the pull ring 1 is arranged in the cover body 2, and a liquid pipette 5, wherein the liquid pipette 5 is connected to the lower end of the piston cylinder of the piston assembly 3, and wherein the liquid pipette 5 is connected to a liquid outlet pipe 4;

[0028] The liquid outlet pipe 4 is an L-shaped pipe, the horizontal pipe of the liquid outlet pipe 4 is fixedly connected to the upper part of the liquid suction pipe 5, and the vertical pipe of the liquid outlet pipe 4 is connected to the supporting assembly.

[0029] The support assembly includes a collar 6, a straight groove rod 7, a swing rod 9, a support rod 11 and a support block 12. The collar 6 is looped around the vertical tube of the liquid outlet pipe 4. The arc-shaped wall surface of the collar 6 is fixedly connected to the symmetrical straight groove rods 7. A limiting shaft 19 is respectively passed through the slide groove of each straight groove rod 7. The outer end of each limiting shaft 19 is respectively fixedly connected to one end of the swing rod 9. The other end of each swing rod 9 is respectively hinged to a U-shaped block 10. The U-shaped block 10 is fixed to the outer wall of the vertical tube of the liquid outlet pipe 4. The other end of each swing rod 9 is respectively fixedly connected to the upper end of the support rod 11. The other end of each support rod 11 is respectively fixedly connected to the support block 12.

[0030] Each of the swing rods 9 and the support rods 11 are arranged in a V shape.

[0031] The collar 6 is threadedly connected to a top screw 61 , and the top screw 61 can support the liquid outlet pipe 4 .

[0032] The other end of each of the limiting shafts 19 is fixedly connected to a stopper 8 to prevent the limiting shaft 19 from being separated from the sliding groove of the straight groove rod 7 .

[0033] The working method of this embodiment is as follows: insert the suction tube 5 into the oil drum, insert the liquid outlet tube 4 into the collection bag, insert the support block 12 and the support rod 11 into the collection bag together, loosen the top screw 61, the movable collar 6 drives the straight groove rod 7 to move, the straight groove rod 7 drives the limit shaft 19 to move, the limit shaft 19 drives the swing rod 9 to swing, the swing rod 9 drives the support rod 11 to swing, so that the support rod 11 swings outwards and drives the support block 12 to swing outwards away from each other, so that the support block 12 is supported on the inner side of the upper part of the collection bag to prevent the liquid outlet tube 4 from falling out, and tighten the top screw 61. The liquid outlet tube 41 is supported and the position of the support block 12 is fixed so that the user can drive the piston block to move up and down in the piston cylinder by pulling the pull ring 1 fixedly connected to the piston rod. This movement creates a pressure difference so that the liquid can be sucked in or discharged. When the piston block moves upward, a negative pressure is formed inside the pipette, thereby sucking the liquid sample. After the sampling is completed, the piston block moves downward and discharges the liquid into the collection bag through the liquid outlet tube 4. The L-shaped liquid outlet tube 4 design helps to control the flow direction of the liquid and facilitates the transfer of the sample to the collection bag.

[0034] Embodiment 2:

[0035] Based on the liquid sampling device provided in the first embodiment of the present application, the second embodiment of the present application provides another liquid sampling device. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0036] Specifically, the difference of the liquid sampling device provided in the second embodiment of the present application is that it also includes the following features: a filter assembly is provided at the lower end of the pipette 5 .

[0037] The filter assembly includes a cylinder 17, and a group of filter holes 18 evenly arranged in a circumference are provided on the lower side of the cylinder 17. The cylinder 17 matches the liquid suction tube 5. The upper end of the arc-shaped wall of the cylinder 17 is fixedly connected to symmetrical ear blocks 16. The upper end of each ear block 16 is respectively fixed with a bolt 13, and each of the bolts 13 passes through a limit block 15, and each of the limit blocks 15 is fixedly connected to the liquid suction tube 5. Each of the bolts 13 is threadedly connected to a nut 14.

[0038] The principle of the utility model is as follows: a filter assembly is provided at the lower end of the pipette 5, including a cylinder 17 and a filter hole 18, which allows liquid to pass through while blocking impurities to ensure that the sample obtained is pure;

[0039] The nut 14 is screwed off, and the cylinder 17 is moved downward to drive the bolt 13 to disengage from the limit block 15, so that the filter assembly can be removed for easy cleaning and replacement.

[0040] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A liquid sampling device, comprising a piston assembly (3), wherein the piston assembly (3) comprises a piston cylinder, a piston rod and a piston block, wherein the piston cylinder matches the piston block, wherein the piston block fixes the piston rod, wherein the piston rod passes through the upper end of the piston cylinder and the upper end is fixedly connected to a pull ring (1), wherein a cover body (2) is fixed on the upper side of the piston cylinder, and the pull ring (1) is arranged inside the cover body (2), and wherein: A liquid suction pipe (5), the liquid suction pipe (5) being connected to the lower end of the piston cylinder of the piston assembly (3), and the liquid suction pipe (5) being connected to the liquid outlet pipe (4); The liquid outlet pipe (4) is an L-shaped pipe, the horizontal pipe of the liquid outlet pipe (4) is fixedly connected to the upper part of the liquid suction pipe (5), and the vertical pipe of the liquid outlet pipe (4) is connected to the support assembly.

2. The liquid sampling device according to claim 1, characterized in that: The support assembly comprises a collar (6), a straight groove rod (7), a swing rod (9), a support rod (11) and a support block (12); the collar (6) is sleeved around the vertical tube of the liquid outlet pipe (4); the arc-shaped wall surface of the collar (6) is fixedly connected to the symmetrical straight groove rods (7); a limiting shaft (19) is respectively passed through the sliding groove of each straight groove rod (7); the outer end of each limiting shaft (19) is respectively fixedly connected to one end of the swing rod (9); the other end of each swing rod (9) is respectively hinged to a U-shaped block (10); the U-shaped block (10) is fixed to the outer wall of the vertical tube of the liquid outlet pipe (4); the other end of each swing rod (9) is respectively fixedly connected to the upper end of the support rod (11); and the other end of each support rod (11) is respectively fixedly connected to the support block (12).

3. The liquid sampling device according to claim 2, characterized in that: Each of the swing rods (9) and support rods (11) are arranged in a V shape.

4. The liquid sampling device according to claim 2, characterized in that: The collar (6) is threadedly connected to a top screw (61), and the top screw (61) can support the liquid outlet pipe (4).

5. The liquid sampling device according to claim 1, characterized in that: A filter assembly is provided at the lower end of the liquid suction tube (5).

6. The liquid sampling device according to claim 5, characterized in that: The filter assembly comprises a cylinder (17), a group of filter holes (18) evenly arranged in a circumference are provided on the lower side of the cylinder (17), the cylinder (17) matches the liquid suction tube (5), the upper end of the arc-shaped wall of the cylinder (17) is fixedly connected to symmetrical ear blocks (16), the upper end of each ear block (16) is respectively fixed with a bolt (13), each of the bolts (13) passes through a limit block (15), each of the limit blocks (15) is fixedly connected to the liquid suction tube (5), and each of the bolts (13) is respectively threadedly connected to a nut (14).

7. The liquid sampling device according to claim 2, characterized in that: The other end of each of the limiting shafts (19) is respectively fixedly connected to a stopper (8).

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