A sampling device

Abstract

The present invention discloses a sampling device, including a capping assembly that can be fitted with the mouth of a barreled water bottle, an upper gripper and a lower gripper that are concentrically arranged and axially displaceable in cooperation with the capping assembly, and first and second gripping arms for driving the upper and lower grippers. Through the opening and closing of the first and second gripping arms, the upper and lower grippers are clamped as the first and second gripping arms are combined, so that the capping seal tightly presses on the mouth of the barreled water bottle for sampling. Continuous sampling can be carried out through the sampling tube on the capping in cooperation with the exhaust pipe, and the sampling process realizes complete blockage from the outside world. When the sampling is completed, the upper and lower grippers are loosened as the first and second gripping arms open, and the loosening of the upper and lower grippers enables the capping to disengage from the mouth of the barreled water bottle for sampling. Before the sampling starts, the present invention forms a sealed fit with the mouth of the barreled water bottle for sampling through the sealing ring outside the puncture port, realizes complete blockage from the outside world during the sampling process, thoroughly avoids the risk of contamination, and is easy to operate.

Description

Technical Field

[0001] The present invention relates to a sampling device, in particular to a sampling device suitable for microbial detection of barreled liquids. Background Art

[0002] In order to ensure the product quality of barreled drinking water, it is necessary to conduct microbial detection on it. According to relevant regulations, this detection work requires taking out a sufficient amount of samples for membrane filtration treatment and inoculating the filter membrane to confirm the microbial content therein. To ensure that the detection results are not affected by microorganisms in the environment, it is necessary to bring the samples into the clean area or conduct closed sampling. Since large-volume barreled water occupies a large space, it is usually difficult to transfer all of it to the clean area, and the construction and maintenance costs of the clean area are relatively high. Closed sampling, on the other hand, requires a special device. Currently, there is no suitable device for this sampling inspection. Sampling mainly relies on manual operation, which has a large workload, is inconvenient, has low work efficiency, and a high pollution risk. To solve the problems existing in this sampling work, it is necessary to design a sampling device that is convenient, fast, movable, and has no pollution risk. Summary of the Invention

[0003] The present invention provides a sampling device with a simple structure and convenient for quickly sampling barreled liquids to solve the problems existing in the prior art during use.

[0004] The present invention provides a sampling device. As an improvement, it includes:

[0005] A gland assembly, the gland assembly includes a gland, an exhaust pipe is provided on the gland, a puncture port is provided on the gland, a sampling tube is provided in the puncture port, a sealing ring is provided outside the puncture port, and a clamping groove is further provided on the gland; An upper gripper and a lower gripper that are concentrically arranged and can axially displace, the upper gripper includes an upper gripper arm and a connecting rod connecting the upper gripper arm, a first clamping arm that cooperates with the clamping groove provided on the gland is provided on the upper gripper arm, and a second clamping arm that is used to clamp the centripetal protrusion of the bottleneck of the barreled water bottle for sampling is provided on the lower gripper; A first and a second handle arm that are hinged to each other, the first handle arm is connected to the lower gripper, and the second handle arm is hinged to the other end of the connecting rod; The upper and lower grippers are clamped when the first and second handle arms are combined and loosened when the first and second handle arms are opened.

[0006] As a further improvement, the first and second handle arms are arranged up and down, one end of the first and second handle arms is hinged to each other, and the connecting rod is hinged to the second handle arm.

[0007] As a further improvement, a shaft hole concentric with the upper and lower grippers is provided on the first handle arm, the connecting rod passes through the shaft hole, one end of the connecting rod is connected to the gripper arm of the upper gripper, and the other end is hinged to the corresponding position of the second handle arm.

[0008] As a further improvement, a compression spring for opening the first and second gripping arms is provided between the first and second gripping arms.

[0009] As a further improvement, the upper gripper is provided with three upper gripping arms, the lower gripper is provided with two lower gripping arms, and the first and second clamping arms are respectively arranged at the lower ends of the gripping arms of the upper and lower grippers.

[0010] As a further improvement, a locking structure that can be hooked and fitted with each other is provided between the first and second gripping arms.

[0011] As a further improvement, a connecting arm is provided at the hinge end of the first and second gripping arms, and the corresponding ends of the connecting arm are respectively rotatably connected to the corresponding ends of the first and second gripping arms.

[0012] As a further improvement, the compression spring is sleeved on the connecting rod, and the corresponding ends are respectively connected to the corresponding parts of the first and second gripping arms.

[0013] As a further improvement, the locking structure is a first self-locking piece and a second self-locking piece that cooperate with each other. The first and second self-locking pieces are respectively arranged at the corresponding parts of the first and second gripping arms, and the corresponding parts of the first and second self-locking pieces are provided with hooking teeth that fit with each other.

[0014] As a further improvement, one of the first and second self-locking pieces is fixed to the corresponding gripping arm, and the other self-locking piece is rotatably arranged at the corresponding part of the other gripping arm.

[0015] Compared with the prior art, the beneficial effects of the present invention are a capping assembly that can cooperate with the mouth of a barreled water bottle, an upper gripper and a lower gripper that are concentrically arranged and axially displaceable and cooperate with the capping assembly, and first and second gripping arms for driving the upper and lower grippers. Through the opening and closing of the first and second gripping arms, the upper and lower grippers are clamped as the first and second gripping arms are combined, so that the capping is tightly pressed on the mouth of the sampled barreled water bottle. Sampling can be continuously performed through the sampling tube on the capping in cooperation with the exhaust pipe, and the sampling process is completely blocked from the outside. When the sampling is completed, the upper and lower grippers are loosened as the first and second gripping arms open, and the loosening of the upper and lower grippers enables the capping to be disengaged from the mouth of the sampled barreled water bottle. Before the sampling starts, the present invention forms a sealed fit with the mouth of the sampled barreled water bottle through the sealing ring outside the puncture port, completely blocks the outside during the sampling process, thoroughly avoids the risk of contamination, and is easy to operate.

[0016] The sampling device forms a sealed fit with the mouth of the barreled water bottle for sampling through a sealing ring. Using the lever principle, it pushes the puncture opening provided on the gland down and pierces into the mouth of the barreled water bottle for sampling, and presses it into the bottle mouth. After piercing, through the stroke control of the first and second arms, it realizes sealing without penetration. Then, the barreled water bottle is tilted, and the water sample is taken out through the sampling pipe, the air is exchanged through the air filter and the exhaust pipe, and the taken water sample is directly transferred into a sealed sampling bottle or directly filtered through a filter membrane. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the sampling device of the present invention.

[0018] Figure 2 It is a front view of the sampling device of the present invention.

[0019] Figure 3 It is a cross-sectional view of the gland assembly of the present invention.

[0020] Figure 4 It is a perspective view of the gland assembly of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the sampling of the present invention. Detailed Embodiment

[0022] Refer to Figures 1-5 This embodiment includes a gland assembly 1, an upper gripper 2 and a lower gripper 3 that are concentrically arranged and axially displaceable, and first and second arms 4 and 5 that are hinged to each other.

[0023] The described gland assembly 1 includes a gland 11, an exhaust pipe 12 is provided on the gland 11, a puncture port 13 for puncturing and sampling the mouth of a barreled water bottle is provided on the gland 11, a sampling tube 15 is provided in the puncture port 13, a sealing ring 16 adapted to the mouth of the barreled water bottle inserted for sampling is provided outside the puncture port 13, and a clamping groove 14 is further provided on the gland 11. An annular end cover 130 can be provided at the upper part of the puncture port 13, and the end cover 130 and the gland 11 form the clamping groove 14. An upper gripper 2 and a lower gripper 3 which are concentrically arranged and axially displaceable are provided. The upper gripper 2 includes upper gripper arms 21 and a connecting rod 22 connecting the upper gripper arms. A first clamping arm 23 adapted to the clamping groove 14 provided on the gland 11 is provided on the upper gripper arm 21. The lower gripper 3 includes lower gripper arms 31, and a second clamping arm 30 for clamping the centripetal protrusion of the mouth of the barreled water bottle 9 for sampling is provided on the lower gripper arm 31. The upper gripper arm 21 is clamped into the clamping groove 14 through the first clamping arm 23 to drive the gland 11 to move up and down. A clamping notch adapted to the mouth of the barreled water bottle 9 for sampling is provided on the second clamping arm 30, and the above-mentioned centripetal direction is towards the axis of the upper and lower grippers. First and second handle arms 4 and 5 which are hinged to each other are provided. The first handle arm 4 is connected to the lower gripper 3, and the second handle arm 5 is hinged to the other end of the connecting rod 22. The upper and lower grippers 2 and 3 are clamped when the first and second handle arms 4 and 5 are combined, and are loosened when the first and second handle arms 4 and 5 are opened. That is, the opening and closing of the first and second handle arms 4 and 5 can be used to control the upper and lower grippers 2 and 3, so as to control the sealed connection and disconnection between the gland assembly 1 and the mouth of the barreled water bottle 9 for sampling.

[0024] For the convenience of operation, the first and second handle arms 4 and 5 are arranged up and down, one ends of the first and second handle arms 4 and 5 are hinged to each other, and the connecting rod is hinged to the second handle arm. Of course, the first and second handle arms 4 and 5 can also be arranged horizontally or in other directions, as long as they can drive the upper and lower grippers 2 and 3 to be clamped when the first and second handle arms 4 and 5 are combined, and to be loosened when the first and second handle arms 4 and 5 are opened.

[0025] A shaft hole 41 concentric with the upper and lower grippers 2 and 3 is provided on the first handle arm 4, the connecting rod 22 passes through the shaft hole 41, one end of the connecting rod 22 is connected to the gripper arm 21 of the upper gripper 2, and the other end is hinged to the corresponding position of the second handle arm 5. The hinge in the present invention can be simplified to a rotational connection by a rotating shaft.

[0026] A compression spring 6 for opening the first and second handle arms is provided between the first and second handle arms 4 and 5. The compression spring 6 is used to open the first and second handle arms 4 and 5 in the default state, and manually pressing and closing the first and second handle arms 4 and 5 drives the upper and lower grippers to be combined with the gland assembly to be tightened, so as to be able to clamp the mouth of the barreled water bottle 9 for sampling.

[0027] The upper gripper 2 is provided with three upper gripper arms 21. The first clamping arm 23 can be connected and arranged on the three upper gripper arms 21. The first clamping arm 23 is provided with an opening 24 for inserting into the card slot. The lower gripper 3 is provided with two lower gripper arms 31. The first and second clamping arms 23 and 30 are respectively arranged at the lower ends of the gripper arms of the upper and lower grippers 2 and 3.

[0028] A locking structure 7 that can be hooked and fitted with each other is provided between the first and second handle arms 4 and 5.

[0029] A connecting arm 8 is provided at the hinge ends of the first and second handle arms 4 and 5. The corresponding ends of the connecting arm 8 are respectively rotatably connected to the corresponding ends of the first and second handle arms 4 and 5. The connecting arm 8 is used to extend the distance between the first and second handle arms 4 and 5.

[0030] The compression spring 6 is sleeved on the connecting rod 22. The corresponding ends of the compression spring 6 are respectively connected to the corresponding parts of the first and second handle arms 4 and 5.

[0031] The locking structure 7 is a first and second self-locking pieces 70 and 71 that cooperate with each other. The first and second self-locking pieces 70 and 71 are respectively arranged at the corresponding parts of the first and second handle arms 4 and 5. The corresponding parts of the first and second self-locking pieces 70 and 71 are provided with hooking teeth that fit with each other.

[0032] One of the first and second self-locking pieces 70 and 71 is fixed to the corresponding handle arm, and the other self-locking piece is rotatably arranged at the corresponding part of the other handle arm. In this embodiment, the second self-locking piece 71 on the upper side is rotatably arranged on the second handle arm 5, and the first self-locking piece 70 on the lower side is fixed to the first handle arm 4. In addition, a compression spring piece 72 for driving the second self-locking piece 71 to rotate towards the first self-locking piece 70 is provided on the second self-locking piece 71. The compression spring piece 72 is fixed to the second handle arm 5 by bolts or screws.

[0033] See Figure 5, manually open or open the first and second arms 4 and 5 under the action of the compression spring 6. The upper and lower grippers 2 and 3 separate as the first and second arms 4 and 5 open, and the gland assembly 1 and the lower gripper arm 31 of the lower gripper 3 are sleeved on the mouth 9 of the sampled barreled water bottle, and at the same time the puncture port 13 is aligned with the mouth 9 of the sampled barreled water bottle. The bayonet adapted to the mouth 9 of the sampled barreled water bottle on the second clamping arm 30 of the two lower gripper arms 31 will clamp the lower part of the mouth 9 of the sampled barreled water bottle. Drive and press the first and second arms 4 and 5, and the upper and lower grippers 2 and 3 clamp the mouth of the sampled barreled water bottle as the first and second arms 4 and 5 are combined. The puncture port 13 is pressed by the first and second arms 4 and 5 and pierces into the mouth 9 of the sampled barreled water bottle under the action of the upper and lower grippers 2 and 3, and locks the first and second arms 4 and 5 through the first and second self-locking pieces 70 and 71. The sealing ring 16 arranged on the outside of the puncture port 13 will seal the mouth of the sampled barreled water bottle, then pour the sampled barreled water bottle, take out the water sample through the pipeline of the sampling tube 15, ventilate through the air filter and the exhaust pipe 12, and directly transfer the taken water sample into a closed sampling bottle or directly filter it through a filter membrane.

Claims

1. A sampling device, characterized in that: it includes a gland assembly. The gland assembly includes a gland. An exhaust pipe is provided on the gland. A puncture port is provided on the gland. A sampling tube is provided in the puncture port. A sealing ring is provided outside the puncture port. A clamping groove is also provided on the gland; An upper gripper and a lower gripper that are concentrically arranged and can axially displace. The upper gripper includes an upper gripper arm and a connecting rod connecting the upper gripper arms. The upper gripper arm is provided with a first clamping arm that cooperates with the clamping groove provided on the gland. The lower gripper is provided with a second clamping arm for clamping the centripetal protrusion of the bottle mouth of the bucket for sampling; A first and a second handle arm that are hinged to each other. The first handle arm is connected to the lower gripper. The second handle arm is hinged to the other end of the connecting rod; The upper and lower grippers are clamped as the first and second handle arms are combined and loosened as the first and second handle arms are opened.

2. The sampling device according to claim 1, characterized in that: the first and second handle arms are arranged up and down. One ends of the first and second handle arms are hinged to each other. The connecting rod is hinged to the second handle arm.

3. The sampling device according to claim 1 or 2, characterized in that: a shaft hole concentric with the upper and lower grippers is provided on the first handle arm. The connecting rod passes through the shaft hole. One end of the connecting rod is connected to the gripper arm of the upper gripper, and the other end is hinged to the corresponding position of the second handle arm.

4. The sampling device according to claim 3, characterized in that: a compression spring for opening the first and second handle arms is provided between the first and second handle arms.

5. The sampling device according to claim 3, characterized in that: the upper gripper is provided with three upper gripper arms, and the lower gripper is provided with two lower gripper arms. The first and second clamping arms are respectively arranged at the lower ends of the gripper arms of the upper and lower grippers.

6. The sampling device according to claim 3, characterized in that: a locking structure that can be hooked and fitted to each other is provided between the first and second handle arms.

7. The sampling device according to claim 5, characterized in that: connecting arms are provided at the hinged ends of the first and second handle arms. The corresponding ends of the connecting arms are respectively rotatably connected to the corresponding ends of the first and second handle arms.

8. The sampling device according to claim 4, characterized in that: the compression spring is sleeved on the connecting rod, and the corresponding ends are respectively connected to the corresponding positions of the first and second handle arms.

9. The sampling device according to claim 6, characterized in that: the locking structure is a first and a second self-locking piece that cooperate with each other. The first and second self-locking pieces are respectively arranged at the corresponding positions of the first and second handle arms. Hook-shaped teeth that fit each other are provided at the corresponding positions of the first and second self-locking pieces.

10. The sampling device according to claim 9, characterized in that: one of the first and second self-locking pieces is fixed to the corresponding handle arm, and the other self-locking piece is rotatably arranged at the corresponding position of the other handle arm.

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