Automatic chemical sampling device

Abstract

The utility model discloses an automatic chemical sampling device which comprises a mounting seat, a control valve, a moving mechanism, a residual liquid receiving mechanism, a sampling bottle fixing mechanism and a control system, and the sampling bottle fixing mechanism is mounted on the moving mechanism; the moving mechanism comprises a first moving mechanism and a second moving mechanism, the residual liquid receiving mechanism is mounted on the first moving mechanism, and the first moving mechanism drives the residual liquid receiving mechanism to move to the position below a liquid outlet pipe of the control valve to receive residual liquid; the sampling bottle fixing mechanism is mounted on the second moving mechanism, and the second moving mechanism drives the sampling bottle fixing mechanism to move to the position below the liquid outlet pipe to receive a sample. In this way, the residual liquid receiving system and the sampling system operate separately and do not interfere with each other, the residual liquid is received before sampling each time, it is guaranteed that the residual liquid remaining in the control valve is discharged during sampling, and the representativeness and objectivity of sampling are enhanced. The whole device is simple in structure, high in reliability and low in cost, unmanned sampling can be achieved, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid loading and taking devices, in particular to a device for liquid sampling mainly in high-risk chemical fields. Background Art

[0002] In chemical production, chemical analysis and chemical testing are important processes. Monitoring chemical production, analyzing and testing the degree of reaction, and whether the accompanying media meet safety indicators can effectively maintain the stability and safety of chemical production and improve the quality of chemical production. After the production of chemical production materials is completed, it is necessary to sample the chemical production materials for quality testing. For this purpose, people have invented various chemical sampling devices. For example, Chinese utility model patent CN202322843300.3 discloses a sampling device for chemical production, which can prevent the chemical production materials to be tested from flowing out of the inside of the sampling tube, thereby improving the accuracy of the test results. However, the existing technology cannot completely eliminate the residual liquid remaining in the control valve during sampling, and the residual liquid will affect the purity of the sample, resulting in weak sample representativeness and reducing its objectivity. Although some have designed a structure for separately collecting the residual liquid and the sample, the device structure is relatively complex, resulting in high cost and reduced reliability. Utility Model Content

[0003] The utility model aims to solve the shortcomings of the prior art and provides an automatic chemical sampling device which has a simpler structure, a more reasonable design, can completely separate residual liquid and samples, and avoid interference from residual liquid.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an automatic chemical sampling device, comprising a mounting seat, a control valve, a moving mechanism, a sampling bottle fixing mechanism and a control system, the control system can be controlled by PLC, the control valve is installed on a pipeline for conveying chemical raw materials, the moving mechanism is installed on the mounting seat, and the sampling bottle fixing mechanism is installed on the moving mechanism for placing the sampling bottle, characterized in that: it also includes a residual liquid receiving mechanism, the moving mechanism includes a first moving mechanism and a second moving mechanism, the positions of the first moving mechanism and the second moving mechanism are staggered with each other; the residual liquid receiving mechanism is installed on the first moving mechanism, and the residual liquid receiving mechanism is driven by the first moving mechanism to move to the bottom of the liquid outlet pipe of the control valve to achieve residual liquid collection; the sampling bottle fixing mechanism is installed on the second moving mechanism, and the sampling bottle fixing mechanism is driven by the second moving mechanism to move to the bottom of the liquid outlet pipe to achieve sample collection.

[0005] Furthermore, a bottle cap screwing mechanism is installed on the mounting seat, and the sampling bottle fixing mechanism is driven by the second moving mechanism to move to the bottom of the bottle cap screwing mechanism to unscrew or tighten the bottle cap.

[0006] Furthermore, the residual liquid receiving mechanism includes a liquid receiving funnel and a residual liquid receiving lifting cylinder. The liquid receiving funnel is connected to the cylinder rod of the residual liquid receiving lifting cylinder through a funnel frame, and the residual liquid receiving lifting cylinder is installed on the first moving mechanism.

[0007] Furthermore, the sampling bottle fixing mechanism includes a clamping claw for clamping the sampling bottle, the clamping claw is connected to a bottle clamping cylinder to achieve clamping and loosening actions, and the bottle clamping cylinder is installed on the second moving mechanism through a retractable mechanism.

[0008] Furthermore, the retractable mechanism includes a bottle clamping lifting cylinder and a bottle clamping telescopic cylinder. The bottle clamping lifting cylinder is installed on the second moving mechanism. The bottle clamping telescopic cylinder is connected to the cylinder rod of the bottle clamping lifting cylinder. The bottle clamping cylinder is connected to the cylinder rod of the bottle clamping telescopic cylinder to form a structure that allows the sampling bottle to move in three-dimensional space.

[0009] Furthermore, a support base is provided on the mounting base through a support column, a bottle cap screwing mechanism is installed on the support column, a cap screwing lifting cylinder is installed on the support base, and the bottle cap screwing mechanism is connected to the cap screwing lifting cylinder to form a liftable structure.

[0010] Furthermore, the bottle cap screwing mechanism includes a cap screwing clamp, a locking cylinder, a cap screwing motor and a fixed plate, the fixed plate is installed on the support column, the cap screwing motor is installed on the fixed plate, the locking cylinder is connected to the cap screwing motor, and the cap screwing clamp is connected to the locking cylinder to form an openable and lockable structure.

[0011] Furthermore, the first moving mechanism and the second moving mechanism both adopt a cylinder and guide rail structure, the first moving mechanism is installed on the front of the mounting seat, and the second moving mechanism is installed on the back of the mounting seat, and the mounting seat is located below the pipeline.

[0012] The present invention provides a residual liquid receiving system and a sampling system, which are installed together but staggered. The residual liquid receiving system and the sampling system operate independently and do not interfere with each other during operation. This allows residual liquid to be received before each sampling, ensuring that residual liquid remaining in the control valve is removed during sampling, thereby enhancing the representativeness and objectivity of the sampling. The entire device has a relatively simple structure, high reliability, low cost, and can achieve unmanned sampling, ensuring the safety of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the bottle cap twisting mechanism of the present utility model.

[0015] In the figure, 1 is a mounting base, 11 is a first moving mechanism, 12 is a second moving mechanism, 13 is a supporting base, 14 is a supporting column, 2 is a liquid receiving funnel, 21 is a residual liquid receiving lifting cylinder, 22 is a funnel stand, 3 is a bottle cap screwing mechanism, 31 is a cap screwing clamp, 32 is a locking cylinder, 33 is a cap screwing motor, 34 is a cap screwing lifting cylinder, 35 is a fixing plate, 51 is a bottle clamping lifting cylinder, 52 is a bottle clamping telescopic cylinder, 53 is a bottle clamping cylinder, 54 is a clamping claw, 6 is a control valve, 61 is a liquid outlet pipe, 7 is a pipeline, 8 is a sampling bottle, and 81 is a bottle cap. DETAILED DESCRIPTION

[0016] In this embodiment, refer to Figure 1 and Figure 2 The automatic chemical sampling device includes a mounting base 1, a control valve 6, a moving mechanism, a residual liquid receiving mechanism, a sampling bottle fixing mechanism and a control system. The control system can be controlled by PLC, and the HMI integrates parameter settings, control buttons, operation permissions, etc. The control valve 6 is installed on the pipeline 7 for conveying chemical raw materials, and a liquid outlet pipe 61 extends downward from the control valve 6; the moving mechanism is installed on the mounting base 1, and the sampling bottle fixing mechanism is installed on the moving mechanism for placing the sampling bottle 8; the moving mechanism includes a first moving mechanism 11 and a second moving mechanism 12, and the positions of the first moving mechanism 11 and the second moving mechanism 12 are staggered with each other; the residual liquid receiving mechanism is installed on the first moving mechanism 11, and the residual liquid receiving mechanism is driven by the first moving mechanism 11 to move to the bottom of the liquid outlet pipe 61 of the control valve 6 to achieve residual liquid collection; the sampling bottle fixing mechanism is installed on the second moving mechanism 12, and the sampling bottle fixing mechanism is driven by the second moving mechanism 12 to move to the bottom of the liquid outlet pipe 61 to achieve sample collection.

[0017] A bottle cap screwing mechanism 3 is also mounted on the mounting base 1 , and the sampling bottle fixing mechanism is driven by the second moving mechanism 12 to move to the bottom of the bottle cap screwing mechanism 3 to unscrew or tighten the bottle cap 81 .

[0018] The residual liquid receiving mechanism includes a liquid receiving funnel 2 and a residual liquid receiving lifting cylinder 21 . The liquid receiving funnel 2 is connected to the cylinder rod of the residual liquid receiving lifting cylinder 21 through a funnel frame 22 . The residual liquid receiving lifting cylinder 21 is installed on the first moving mechanism 11 .

[0019] The sampling bottle fixing mechanism includes a clamping claw 54 for clamping the sampling bottle 8. The clamping claw 54 is connected to a bottle clamping cylinder 53 to achieve clamping and loosening actions to clamp or put down the sampling bottle 8. The bottle clamping cylinder 53 is installed on the second moving mechanism 12 through a retractable mechanism.

[0020] The retractable mechanism includes a bottle-clamping lifting cylinder 51 and a bottle-clamping telescopic cylinder 52. The bottle-clamping lifting cylinder 51 is installed on the second moving mechanism 12. The bottle-clamping telescopic cylinder 52 is connected to the cylinder rod of the bottle-clamping lifting cylinder 51. The bottle-clamping cylinder 53 is connected to the cylinder rod of the bottle-clamping telescopic cylinder 52 to form a structure that can move the sampling bottle 8 in three-dimensional space, so that the moving position can be accurately controlled.

[0021] A support base 13 is provided on the mounting base 1 through a support column 14, the bottle cap screwing mechanism 3 is installed on the support column 14, and a cap screwing lifting cylinder 34 is installed on the support base 13. The bottle cap screwing mechanism 3 is connected to the cap screwing lifting cylinder 34 to form a liftable structure.

[0022] The capping mechanism 3 includes a capping clamp 31, a locking cylinder 32, a capping motor 33, and a fixing plate 35. The fixing plate 35 is mounted on the support column 14, and the capping motor 33 is mounted on the fixing plate 35. The locking cylinder 32 is connected to the capping motor 33, and the capping clamp 31 is connected to the locking cylinder 32 to form an expandable and lockable structure. When the locking cylinder 32 retracts to control the capping clamp 31 to clamp the bottle cap 81, the capping motor 33 drives the locking cylinder 32 and capping clamp 31 to rotate, thereby tightening or opening the bottle cap 81.

[0023] The first moving mechanism 11 and the second moving mechanism 12 both adopt a cylinder and guide rail structure, which is a common moving mechanism; the first moving mechanism 11 is installed on the front of the mounting base 1, and the second moving mechanism 12 is installed on the back of the mounting base 1, and the mounting base 1 is located below the pipe 7.

[0024] During operation, after the sampling bottle 8 is placed in the sampling and capping position, the control system sends signals to the residual liquid receiving mechanism to prepare to receive residual liquid and the sampling mechanism (the sampling bottle fixing mechanism and the bottle capping mechanism 3) to prepare to screw the cap and take the sample. The residual liquid receiving mechanism moves the liquid receiving funnel 2 from its origin position via the first moving mechanism 11 and the residual liquid receiving cylinder 21 to the bottom of the liquid outlet pipe 61 to prepare to receive residual liquid. After the liquid receiving funnel 2 is in place, the control system sends a signal through the control valve 6 to discharge the received residual liquid. After receiving the residual liquid, the residual liquid receiving mechanism returns to its origin position.

[0025] After the residual liquid is collected, the control system sends a signal to the sampling system. After receiving the signal, the sampling system first unscrews and clamps the bottle cap 81 of the sampling bottle 8 through the bottle cap unscrewing mechanism 3, and the sampling bottle fixing mechanism clamps the uncovered sampling bottle 8, and reaches the sampling point through the second moving mechanism 12. The control system sends a signal to the control valve 6 to discharge the liquid for sampling.

[0026] After sampling is completed, the control valve 6 is closed, the sampling bottle 8 returns to its original position, the capping clamp 31 is moved to the capping position by the capping lifting cylinder 34, and the capping motor 33 works to tighten the bottle cap. After capping is completed, the clamp 54 puts the sampling bottle 8 down, and the entire sampling work is completed.

[0027] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. All equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. An automated chemical sampling device comprising a mounting base, a control valve, a movable mechanism, a sampling bottle fixing mechanism, and a control system. The control valve is mounted on a pipeline for conveying chemical raw materials, the movable mechanism is mounted on the mounting base, and the sampling bottle fixing mechanism is mounted on the movable mechanism for placing the sampling bottle. The device is characterized in that: It also includes a residual liquid receiving mechanism, and the moving mechanism includes a first moving mechanism and a second moving mechanism, and the positions of the first moving mechanism and the second moving mechanism are staggered with each other; the residual liquid receiving mechanism is installed on the first moving mechanism, and the first moving mechanism drives the residual liquid receiving mechanism to move to the bottom of the liquid outlet pipe of the control valve to achieve residual liquid collection; the sampling bottle fixing mechanism is installed on the second moving mechanism, and the second moving mechanism drives the sampling bottle fixing mechanism to move to the bottom of the liquid outlet pipe to achieve sample collection.

2. The automatic industrial sampling device according to claim 1, characterized in that: A bottle cap screwing mechanism is also installed on the mounting seat, and the sampling bottle fixing mechanism is driven by the second moving mechanism to move to the bottom of the bottle cap screwing mechanism to unscrew or tighten the bottle cap.

3. The automatic industrial sampling device according to claim 1, characterized in that: The residual liquid receiving mechanism includes a liquid receiving funnel and a residual liquid receiving lifting cylinder. The liquid receiving funnel is connected to the cylinder rod of the residual liquid receiving lifting cylinder through a funnel frame. The residual liquid receiving lifting cylinder is installed on the first moving mechanism.

4. The automatic industrial sampling device according to claim 1, characterized in that: The sampling bottle fixing mechanism includes a clamping claw for clamping the sampling bottle, the clamping claw is connected to a bottle clamping cylinder to achieve clamping and loosening actions, and the bottle clamping cylinder is installed on the second moving mechanism through a telescopic mechanism.

5. The automatic industrial sampling device according to claim 4, characterized in that: The retractable mechanism includes a bottle clamping lifting cylinder and a bottle clamping telescopic cylinder. The bottle clamping lifting cylinder is installed on the second moving mechanism. The bottle clamping telescopic cylinder is connected to the cylinder rod of the bottle clamping lifting cylinder. The bottle clamping cylinder is connected to the cylinder rod of the bottle clamping telescopic cylinder to form a structure that allows the sampling bottle to move in three-dimensional space.

6. The automatic industrial sampling device according to claim 1, characterized in that: A support base is provided on the mounting base through a support column, a bottle cap screwing mechanism is installed on the support column, a cap screwing lifting cylinder is installed on the support base, and the bottle cap screwing mechanism is connected with the cap screwing lifting cylinder to form a liftable structure.

7. The automatic industrial sampling device according to claim 6, characterized in that: The bottle cap screwing mechanism includes a cap screwing clamp, a locking cylinder, a cap screwing motor and a fixing plate. The fixing plate is installed on the support column, the cap screwing motor is installed on the fixing plate, the locking cylinder is connected to the cap screwing motor, and the cap screwing clamp is connected to the locking cylinder to form an openable and lockable structure.

8. The automatic industrial sampling device according to claim 1, characterized in that: The first moving mechanism and the second moving mechanism both adopt a cylinder and guide rail structure. The first moving mechanism is installed on the front of the mounting base, and the second moving mechanism is installed on the back of the mounting base. The mounting base is located below the pipeline.

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