Circulating sampling device for chemical preparation

Abstract

The utility model relates to the technical field of industrial preparation sample collection, and discloses a circulating sampling device for chemical preparation, which comprises a sampling pipe, the right side of the surface of the sampling pipe is fixedly connected with a driving assembly, the bottom surface of the sampling pipe is fixedly connected with two groups of mounting pipes, and the interiors of the two groups of mounting pipes are in threaded connection with a collecting assembly. The outer surface of the sampling tube is in sliding connection with an extension assembly. According to the cyclic sampling device for chemical preparation, through the arrangement of the extension assembly, when the cyclic sampling device is used, a connecting ring is pushed, the connecting ring drives a connecting rod to move, the connecting rod moves to move an extension sleeve out of a sampling pipe, and friction force generated by a friction pad is used for limiting the connecting ring to a certain extent, so that during sampling, the connecting ring is separated from the sampling pipe; the device can be extended by a certain distance through the extension sleeve, so that the extension sleeve can penetrate into a liquid medium, the average property of a reaction system can be better acquired, and the influence of a surface effect on a sampling result is reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial sample collection technology, and in particular to a circulating sampling device for chemical preparation. Background Technology

[0002] Ethyl 8-chlorooctanoate is an important organic synthesis intermediate with broad application prospects in the pharmaceutical, pesticide, and fragrance industries. Its preparation involves multiple chemical reactions, including halogenation and esterification, and is extremely sensitive to reaction conditions (such as temperature, pH, and catalyst type). Any slight deviation can lead to product quality fluctuations or even failure. Therefore, real-time and accurate sample collection and testing are crucial for process optimization and quality control. To address this, a circulating sampling device for chemical preparation is proposed.

[0003] A circulating sampling device for chemical preparation, disclosed in publication number CN216746957U, includes a sampling cylinder and a water storage cylinder. A sampling piston is slidably connected to the inner wall of the sampling cylinder, and a first piston rod is fixedly connected to the inner wall of the sampling piston. A limit ring is fixedly connected to one end of the sampling cylinder, and a first sealing sleeve is fixedly connected to the inner wall of the limit ring. A clean water pipe and a wastewater pipe are respectively fixedly connected to the inner wall of the limit ring. A water-pressing piston is slidably connected to the inner wall of the water storage cylinder, and a second piston rod is fixedly connected to the inner wall of the water-pressing piston. Water inlet channels are provided at both ends of the second piston rod. This circulating sampling device for chemical preparation can directly drive clean water to clean the inner wall of the sampling cylinder by the extension and retraction stroke of the sampling piston during sampling, avoiding the need to pull the first piston rod again after each sampling, reducing operation steps, and improving sampling efficiency.

[0004] While the aforementioned patent avoids pulling the first piston rod again after each sampling, reducing operational steps and improving sampling efficiency, the device often requires the sampling tube to be placed inside the liquid for collection. Collecting only on the surface is not convincing and it is not easy to sample solutions at different depths.

[0005] Therefore, it is necessary to invent a circulating sampling device for chemical preparation to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] The technical problem solved by this utility model is to provide a highly practical, simple-to-operate, and structurally simple circulating sampling device for chemical preparation. This solves the problem mentioned in the background art that when sampling, it is often necessary to put the sampling tube into the liquid for collection, and collecting only on the surface is not convincing and it is not easy to sample the sample solution at different depths.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a circulating sampling device for chemical preparation, comprising a sampling tube, a driving assembly fixedly connected to the right side of the sampling tube, two sets of mounting tubes fixedly connected to the bottom of the sampling tube, a collection assembly threadedly connected to the interior of the two sets of mounting tubes, and an extension assembly slidably connected to the outer surface of the sampling tube. The driving assembly includes a connecting plate fixedly connected to the right side of the sampling tube, an electric push rod fixedly connected to one side of the connecting plate, and a battery fixedly connected to the surface of the electric push rod. The collection assembly includes collection bottles threadedly connected to the interior of the two sets of mounting tubes, solenoid valves fixedly connected to the exterior of each of the two sets of collection bottles, a controller electrically connected to one end of each of the two sets of solenoid valves via a power line, and two liquid level sensors electrically connected to one side of the controller via a power line. The extension assembly includes a friction pad slidably connected to the exterior of the sampling tube, a connecting ring fixedly connected to the exterior of the friction pad, two sets of connecting rods fixedly connected to one side of the connecting ring, and an extension sleeve fixedly connected to one end of each of the two sets of connecting rods.

[0010] As a further embodiment of this utility model, a piston pad is slidably connected inside the sampling tube, a moving rod is fixedly connected to one side of the piston pad, and the other end of the moving rod is fixedly connected to one end of an electric push rod. The electric push rod is used to drive the moving rod to move.

[0011] As a further embodiment of this invention, a sealing gasket is fixedly connected to the top surface of the collection bottle, and both sets of liquid level sensors are fixedly connected to the bottom surface of the sealing gasket. The sealing gasket helps to prevent the sample from leaking out of the liquid level sensor interface.

[0012] As a further embodiment of this utility model, the surface of the sampling tube is provided with two sets of sliding grooves, and the connecting ring is slidably connected inside the two sets of sliding grooves. The setting of the connecting ring plays the role of driving the connecting rod to move.

[0013] As a further embodiment of this utility model, the sampling tube has a placement groove inside, the extension sleeve is slidably connected to the inside of the placement groove, and the inner side of the extension sleeve is slidably connected to an inlet pipe. One end of the inlet pipe is fixedly connected to one side of the sampling tube. The inlet pipe serves to draw the sample.

[0014] As a further embodiment of this utility model, a handle is fixedly connected to the bottom surface of the sampling tube, and an anti-slip sleeve is sleeved on the outside of the handle. The anti-slip sleeve serves to prevent slipping.

[0015] As a further embodiment of this utility model, observation windows are provided on the surface of both sets of collection bottles, and scale lines are provided on the surface of both sets of observation windows. The observation windows enable staff to visually observe the liquid level.

[0016] (III) Beneficial Effects

[0017] This utility model provides a circulating sampling device for chemical preparation, which has the following beneficial effects:

[0018] 1. This circulating sampling device for chemical preparation, through the setting of the extension component, when in use, push the connecting ring, the connecting ring drives the connecting rod to move, the moving connecting rod moves the extension sleeve out of the sampling tube, and the friction force generated by the friction pad is used to limit the connecting ring to a certain extent, so that the device can be extended by a certain distance during sampling, and the extension sleeve can penetrate into the liquid medium, so as to better collect the average properties of the reaction system and reduce the influence of surface effect on the sampling results.

[0019] 2. This circulating sampling device for chemical preparation, through the setting of the drive component, connects the power supply and starts the electric push rod when sampling. The electric push rod drives the moving rod to move. When the moving rod moves, the piston pad moves, so that the sample can be repeatedly drawn up, saving manpower for the staff. At the same time, it can also make the moving rod complete the sampling process quickly and stably, thereby reducing sampling time and improving experimental efficiency.

[0020] 3. This circulating sampling device for chemical preparation, through the setting of the collection components, allows the sample to enter the inside of the collection bottle through the sampling tube during sampling. A preset liquid level value is set on the controller, and the liquid level sensor is used to detect the amount of sample collected and transmit the data to the controller. When the required amount is reached, the controller controls the solenoid valve on the collection bottle to close after collection is completed, so that other collection bottles can collect samples. This ensures the accuracy and repeatability of the sampling process, improves the degree of automation, and reduces the need for manual operation and potential errors. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the drive component structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the collection component of this utility model;

[0024] Figure 4 This is a schematic diagram of the extended component structure of this utility model.

[0025] In the diagram: 1. Sampling tube; 2. Drive assembly; 201. Connecting plate; 202. Electric push rod; 203. Battery; 3. Mounting tube; 4. Collection assembly; 401. Collection bottle; 402. Solenoid valve; 403. Controller; 404. Liquid level sensor; 5. Extension assembly; 501. Friction pad; 502. Connecting ring; 503. Connecting rod; 504. Extension sleeve; 6. Piston pad; 7. Moving rod; 8. Sealing gasket; 9. Inlet pipe; 10. Handle; 11. Observation window; 12. Scale line. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1 to 4 This utility model provides a technical solution: a circulating sampling device for chemical preparation, including a sampling tube 1, a driving component 2 fixedly connected to the right side of the sampling tube 1, two sets of mounting tubes 3 fixedly connected to the bottom surface of the sampling tube 1, a collection component 4 internally threadedly connected to the two sets of mounting tubes 3, and an extension component 5 slidably connected to the outer surface of the sampling tube 1. The driving component 2 includes a connecting plate 201 fixedly connected to the right side of the sampling tube 1, an electric push rod 202 fixedly connected to one side of the connecting plate 201, and a battery 203 fixedly connected to the surface of the electric push rod 202; the collection component 4 includes a threaded... The collection bottle 401 is connected inside the two sets of installation tubes 3. Solenoid valves 402 are fixedly connected to the outside of the two sets of collection bottles 401. One end of the two sets of solenoid valves 402 is electrically connected to a controller 403 via a power line. One side of the controller 403 is electrically connected to two sets of liquid level sensors 404 via a power line. The extension assembly 5 includes a friction pad 501 that is slidably connected to the outside of the sampling tube 1. A connecting ring 502 is fixedly connected to the outside of the friction pad 501. Two sets of connecting rods 503 are fixedly connected to one side of the connecting ring 502. An extension sleeve 504 is fixedly connected to one end of the two sets of connecting rods 503.

[0028] A piston pad 6 is slidably connected inside the sampling tube 1. A moving rod 7 is fixedly connected to one side of the piston pad 6. The other end of the moving rod 7 is fixedly connected to one end of the electric push rod 202. The electric push rod 202 is used to drive the moving rod 7 to move.

[0029] A sealing gasket 8 is fixedly connected to the top surface of the collection bottle 401, and two sets of liquid level sensors 404 are fixedly connected to the bottom surface of the sealing gasket 8. The sealing gasket 8 is designed to prevent the sample from leaking out from the interface of the liquid level sensor 404.

[0030] The surface of the sampling tube 1 is provided with two sets of sliding grooves, and the connecting ring 502 is slidably connected inside the two sets of sliding grooves. The setting of the connecting ring 502 plays the role of driving the connecting rod 503 to move.

[0031] The sampling tube 1 has a placement groove inside, and the extension sleeve 504 is slidably connected to the inside of the placement groove. The inner side of the extension sleeve 504 is slidably connected to the liquid inlet tube 9. One end of the liquid inlet tube 9 is fixedly connected to one side of the sampling tube 1. The liquid inlet tube 9 is used to draw the sample.

[0032] A handle 10 is fixedly connected to the bottom surface of the sampling tube 1, and an anti-slip sleeve is sleeved on the outside of the handle 10. The anti-slip sleeve plays a role in preventing slipping.

[0033] Both sets of collection bottles 401 have observation windows 11 on their surfaces, and both sets of observation windows 11 have scale lines 12 on their surfaces. The observation windows 11 allow staff to visually see the liquid level.

[0034] The model of controller 403 is PG-R7; the model of liquid level sensor 404 is WRT-136. The above parameters and models can be selected according to the actual situation.

[0035] In this invention, the working steps of the device are as follows:

[0036] First step: When in use, push the connecting ring 502. The connecting ring 502 drives the connecting rod 503 to move. The movement of the connecting rod 503 moves the extension sleeve 504 out of the sampling tube 1. The friction force generated by the friction pad 501 is used to limit the connecting ring 502 to a certain extent. This allows the device to extend a certain distance during sampling, so that the extension sleeve 504 can penetrate into the liquid medium. This allows for better collection of the average properties of the reaction system and reduces the influence of surface effects on the sampling results.

[0037] The second step: When taking samples, connect the power supply and start the electric push rod 202. The electric push rod 202 drives the moving rod 7 to move. When the moving rod 7 moves, the piston pad 6 moves, so that the sample can be repeatedly drawn, saving the staff some manpower.

[0038] The third step: During sampling, the sample enters the collection bottle 401 through the sampling tube 1. A preset liquid level value is set on the controller 403. The liquid level sensor 404 is used to detect the amount of sample collected and transmit the data to the controller 403. When the required amount is reached, the controller 403 controls the solenoid valve 402 on the collection bottle 401 to close after collection is completed, so that other collection bottles 401 can collect samples, thereby ensuring the accuracy and repeatability of the sampling process.

[0039] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0040] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating sampling device for chemical preparation, comprising a sampling tube (1), characterized in that: A driving assembly (2) is fixedly connected to the right side of the sampling tube (1), and two sets of mounting tubes (3) are fixedly connected to the bottom surface of the sampling tube (1). A collection assembly (4) is threadedly connected to the inside of the two sets of mounting tubes (3), and an extension assembly (5) is slidably connected to the outer surface of the sampling tube (1). The drive assembly (2) includes a connecting plate (201) fixedly connected to the right side of the surface of the sampling tube (1), an electric push rod (202) fixedly connected to one side of the connecting plate (201), and a storage battery (203) fixedly connected to the surface of the electric push rod (202). The collection assembly (4) includes a collection bottle (401) threaded into the inside of two sets of mounting tubes (3). Solenoid valves (402) are fixedly connected to the outside of the two sets of collection bottles (401). One end of the two sets of solenoid valves (402) is electrically connected to a controller (403) via a power line. One side of the controller (403) is electrically connected to two sets of liquid level sensors (404) via a power line. The extension assembly (5) includes a friction pad (501) slidably connected to the outside of the sampling tube (1). A connecting ring (502) is fixedly connected to the outside of the friction pad (501). Two sets of connecting rods (503) are fixedly connected to one side of the connecting ring (502). An extension sleeve (504) is fixedly connected to one end of each set of connecting rods (503).

2. The circulating sampling device for chemical preparation according to claim 1, characterized in that: The sampling tube (1) is slidably connected to a piston pad (6), and a moving rod (7) is fixedly connected to one side of the piston pad (6). The other end of the moving rod (7) is fixedly connected to one end of an electric push rod (202).

3. The circulating sampling device for chemical preparation according to claim 1, characterized in that: A sealing gasket (8) is fixedly connected to the top surface of the collection bottle (401), and both sets of liquid level sensors (404) are fixedly connected to the bottom surface of the sealing gasket (8).

4. The circulating sampling device for chemical preparation according to claim 1, characterized in that: The sampling tube (1) has two sets of sliding grooves on its surface, and the connecting ring (502) is slidably connected to the inside of the two sets of sliding grooves.

5. A circulating sampling device for chemical preparation according to claim 1, characterized in that: The sampling tube (1) has a placement groove inside, and the extension sleeve (504) is slidably connected to the inside of the placement groove. The inner side of the extension sleeve (504) is slidably connected to the liquid inlet pipe (9), and one end of the liquid inlet pipe (9) is fixedly connected to one side of the sampling tube (1).

6. The circulating sampling device for chemical preparation according to claim 1, characterized in that: The bottom surface of the sampling tube (1) is fixedly connected to a handle (10), and an anti-slip sleeve is sleeved on the outside of the handle (10).

7. A circulating sampling device for chemical preparation according to claim 1, characterized in that: Both sets of collection bottles (401) have observation windows (11) on their surfaces, and both sets of observation windows (11) have scale lines (12) on their surfaces.

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