A sampling device for quantitative sampling

Abstract

This utility model discloses a quantitative sampling device, relating to the field of sampling devices. It includes a delivery pipe with a positioning sleeve fixedly installed on it. The positioning sleeve has an interface, and a sampling mechanism is located at the interface. The sampling mechanism includes a sampling cylinder fixedly installed at the interface. A positioning strip is fixedly installed at one end of the sampling cylinder, and a first electric actuator is fixedly installed on the positioning strip. A piston is fixedly installed at the output end of the first electric actuator. A suction pipe and a sampling needle are fixedly installed on the sampling cylinder. A storage component is fixedly installed at the bottom of the positioning sleeve. Both the suction pipe and the sampling needle are equipped with one-way valves, and the positioning strip has inlet and outlet holes. This quantitative sampling device, through the combined use of the sampling mechanism and the storage component, can replace manual sampling to achieve automatic sampling.

Description

Technical Field

[0001] This utility model relates to the field of sampling devices, specifically a sampling device capable of quantitative sampling. Background Technology

[0002] Polyethylene glycol (PEG) is a high molecular weight polymer. It is a colorless, odorless, non-volatile, viscous liquid with excellent water solubility, lubricity, moisturizing properties, and dispersibility. PEG is widely used in pharmaceuticals, cosmetics, synthetic fibers, rubber, plastics, and many other fields. In the pharmaceutical field, it is commonly used as a drug excipient to aid in drug dissolution and absorption, and can be used to prepare drug matrices such as ointments, tablets, and capsules. In addition, PEG is used to treat constipation and for preoperative bowel cleansing. In cosmetics, it is commonly used as a moisturizer and lubricant, improving the texture and feel of products.

[0003] During the production process, periodically sampling and testing polyethylene glycol (PEG) from pipelines is essential to ensure product quality and process stability. Currently, the common practice is to use a syringe to directly draw a sample of PEG from the pipeline and send it to a laboratory for further analysis and testing. However, this traditional sampling method has several significant drawbacks. First, frequent syringe sampling increases workload and may introduce errors. Second, syringe sampling is relatively slow, impacting the overall efficiency of the production process. This inefficiency is particularly pronounced in large-scale production, potentially leading to production delays and increased costs. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device capable of quantitative sampling, so as to solve the problem of low sampling efficiency in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling device capable of quantitative sampling, comprising a delivery pipe, a positioning sleeve fixedly installed on the delivery pipe, a docking interface on the positioning sleeve, a sampling mechanism at the docking interface, the sampling mechanism comprising a sampling cylinder fixedly installed at the docking interface, a positioning strip fixedly installed at one end of the sampling cylinder, a first electric push rod fixedly installed on the positioning strip, a piston fixedly installed at the output end of the first electric push rod, a suction pipe and a sampling needle fixedly installed on the sampling cylinder, and a storage component fixedly installed at the bottom of the positioning sleeve.

[0006] Preferably, both the suction pipe and the sampling needle are equipped with one-way valves, and the positioning strip has inlet and outlet holes.

[0007] Preferably, the one-way valve in the suction pipe only allows the fluid in the delivery pipe to enter the sampling cylinder through the suction pipe, and the one-way valve in the sampling needle tube only allows the fluid in the sampling cylinder to be discharged through the sampling needle tube.

[0008] Preferably, one end of the suction pipe is connected to the delivery pipe, and the other end of the suction pipe is connected to the sampling cylinder. The first electric push rod is fixedly installed at one end of the sampling cylinder by a positioning strip, and the piston is movably installed in the sampling cylinder by the first electric push rod.

[0009] Preferably, the storage component includes a servo motor fixedly installed at the bottom of the positioning sleeve, a positioning chuck fixedly installed at the output end of the servo motor, a slot is provided at the edge of the positioning chuck, a sample container is fixedly installed in the slot, a rubber stopper is provided at the upper end of the sample container, a second electric push rod is fixedly installed at the middle position of the bottom of the positioning chuck, a lifting plate is fixedly installed at the output end of the second electric push rod, and a suction cup is fixedly installed at the edge of the lifting plate.

[0010] Preferably, one end of the second electric actuator is fixed to the positioning chuck, and the other end of the second electric actuator is fixed to the lifting plate.

[0011] Preferably, the positioning chuck is movably mounted on the bottom of the positioning sleeve by a servo motor, the sample container is connected to the positioning chuck by a slot, and the sample container is fixed to the lifting plate by a suction cup.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this application, a first electric actuator drives a piston to reciprocate within a sampling cylinder. When the piston moves backward, it draws polyethylene glycol from the delivery tube into the sampling cylinder. When the piston moves forward, it compresses the polyethylene glycol in the sampling cylinder, causing it to be discharged through the sampling needle, thus completing the automatic sampling process.

[0014] 2. In this application, when the sample container is empty, it is moved to the bottom of the sampling needle tube, and then the second electric actuator is retracted. The retraction of the second electric actuator will drive the lifting plate to move upward. During the upward movement, the lifting plate will apply force to the sample container, causing the sample container to move upward, thereby realizing the insertion of the sampling needle tube. The polyethylene glycol sample discharged through the sampling needle tube will be automatically stored in the sample container. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the sampling mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the storage component of this utility model.

[0019] Labels in the diagram: 1. Delivery pipe; 2. Positioning chuck; 3. Connecting interface; 4. Sampling mechanism; 401. First electric actuator; 402. Positioning strip; 403. Sampling cylinder; 404. Piston; 405. One-way valve; 406. Suction pipe; 407. Inlet / outlet port; 408. Sampling needle; 5. Storage component; 501. Servo motor; 502. Positioning chuck; 503. Slot; 504. Second electric actuator; 505. Lifting plate; 506. Rubber stopper; 507. Sample container; 508. Suction cup. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a sampling device for quantitative sampling, including a delivery pipe 1, a positioning sleeve 2 fixedly installed on the delivery pipe 1, a docking interface 3 opened on the positioning sleeve 2, a sampling mechanism 4 provided at the docking interface 3, and a storage component 5 fixedly installed at the bottom of the positioning sleeve 2. Through the cooperation of the sampling mechanism 4 and the storage component 5, automatic sampling can be achieved instead of manual sampling.

[0022] like Figure 2 and Figure 3 As shown, the sampling mechanism 4 includes a sampling cylinder 403 fixedly installed at the interface 3. A positioning strip 402 is fixedly installed at one end of the sampling cylinder 403. A first electric push rod 401 is fixedly installed on the positioning strip 402. A piston 404 is fixedly installed at the output end of the first electric push rod 401. A suction pipe 406 and a sampling needle tube 408 are fixedly installed on the sampling cylinder 403. Both the suction pipe 406 and the sampling needle tube 408 are provided with one-way valves 405. An inlet and outlet hole 407 is opened on the positioning strip 402. The one-way valve 405 in the suction pipe 406 only allows the fluid in the delivery pipe 1 to enter the sampling cylinder 403 through the suction pipe 406. The one-way valve 405 in the sampling needle tube 408 only allows the fluid in the sampling cylinder 403 to be discharged through the sampling needle tube 408.

[0023] Specifically, driven by the first electric actuator 401, the piston 404 reciprocates inside the sampling cylinder 403. When the piston 404 moves backward, it draws polyethylene glycol from the delivery tube 1 into the sampling cylinder 403. Subsequently, when the piston 404 moves forward, it applies pressure to the polyethylene glycol inside the sampling cylinder 403, thereby expelling the polyethylene glycol through the sampling needle 408. This process achieves automatic sampling, ensuring the efficiency and accuracy of the entire sampling process.

[0024] like Figure 2 and Figure 4 As shown, the storage component 5 includes a servo motor 501 fixedly installed at the bottom of the positioning sleeve 2. A positioning chuck 502 is fixedly installed at the output end of the servo motor 501. A slot 503 is provided at the edge of the positioning chuck 502. A sample container 507 is fixedly installed in the slot 503. A rubber stopper 506 is provided at the upper end of the sample container 507. A second electric push rod 504 is fixedly installed at the middle position of the bottom of the positioning chuck 502. A lifting plate 505 is fixedly installed at the output end of the second electric push rod 504. A suction cup 508 is fixedly installed at the edge of the lifting plate 505. One end of the second electric push rod 504 is fixed to the positioning chuck 502, and the other end of the second electric push rod 504 is fixed to the lifting plate 505.

[0025] Specifically, after the empty sample container 507 is moved to a position below the sampling needle 408, the second electric actuator 504 can be retracted. Once the second electric actuator 504 is retracted, it will cause the lifting plate 505 to move upward. During the upward movement of the lifting plate 505, it will push the sample container 507 upward, allowing the sampling needle 408 to be smoothly inserted into the sample container 507. In this way, the polyethylene glycol sample discharged through the sampling needle 408 will be automatically stored in the sample container 507.

[0026] Working principle: Polyethylene glycol (PEG) is transported through the delivery pipe 1. During the PEG transport process, the first electric actuator 401 drives the piston 404 to move back and forth within the sampling cylinder 403. When the piston 404 moves backward, it draws PEG from the delivery pipe 1 into the sampling cylinder 403. When the piston 404 moves forward, it squeezes the PEG in the sampling cylinder 403, causing it to be discharged through the sampling needle 408, thus achieving automatic sampling. The sampling amount can be adjusted by controlling the stroke of the piston 404. Furthermore, a servo motor can be activated before the PEG is discharged through the sampling needle 408. When the servo motor 501 is started, it drives the positioning chuck 502 to rotate, moving the empty sample container 507 below the sampling needle tube 408. After the empty sample container 507 is moved below the sampling needle tube 408, the second electric push rod 504 can be retracted. Retracting the second electric push rod 504 will drive the lifting plate 505 to move upward. During the upward movement of the lifting plate 505, it will push the sample container 507 upward, allowing the sampling needle tube 408 to be inserted into the sample container 507. The polyethylene glycol sample discharged through the sampling needle tube 408 will be automatically stored in the sample container 507. After the polyethylene glycol sample is stored in the sample container 507, the second electric push rod 504 can be extended. After the second electric push rod 504 is extended, the lifting plate 505 will move downward, and the suction cup 508 will be attached to the sample container 507. When the lifting plate 505 moves downward, it will pull the sample container 507 away from the sampling needle tube 408.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sample device capable of quantitative sampling, comprising a conveying pipe (1), a positioning sleeve (2) is fixedly installed on the conveying pipe (1), and a docking port (3) is formed in the positioning sleeve (2), characterized in that: A sampling mechanism (4) is provided at the interface (3). The sampling mechanism (4) includes a sampling cylinder (403) fixedly installed at the interface (3). A positioning strip (402) is fixedly installed at one end of the sampling cylinder (403). A first electric push rod (401) is fixedly installed on the positioning strip (402). A piston (404) is fixedly installed at the output end of the first electric push rod (401). A suction pipe (406) and a sampling needle (408) are fixedly installed on the sampling cylinder (403). A storage component (5) is fixedly installed at the bottom of the positioning sleeve (2).

2. A device according to claim 1, wherein: Both the suction pipe (406) and the sampling needle (408) are equipped with one-way valves (405), and the positioning strip (402) is provided with inlet and outlet holes (407).

3. A device according to claim 2, wherein: The one-way valve (405) in the suction pipe (406) only allows the fluid in the delivery pipe (1) to enter the sampling cylinder (403) through the suction pipe (406), and the one-way valve (405) in the sampling needle (408) only allows the fluid in the sampling cylinder (403) to be discharged through the sampling needle (408).

4. A device according to claim 3, wherein: One end of the suction pipe (406) is connected to the delivery pipe (1), and the other end of the suction pipe (406) is connected to the sampling cylinder (403). The first electric push rod (401) is fixedly installed at one end of the sampling cylinder (403) through the positioning strip (402). The piston (404) is movably installed in the sampling cylinder (403) through the first electric push rod (401).

5. A device according to claim 1, wherein: The storage component (5) includes a servo motor (501) fixedly installed at the bottom of the positioning sleeve (2). A positioning chuck (502) is fixedly installed at the output end of the servo motor (501). A slot (503) is provided at the edge of the positioning chuck (502). A sample container (507) is fixedly installed in the slot (503). A rubber stopper (506) is provided at the upper end of the sample container (507). A second electric push rod (504) is fixedly installed at the middle position of the bottom of the positioning chuck (502). A lifting plate (505) is fixedly installed at the output end of the second electric push rod (504). A suction cup (508) is fixedly installed at the edge of the lifting plate (505).

6. A device according to claim 5, wherein: One end of the second electric actuator (504) is fixed on the positioning chuck (502), and the other end of the second electric actuator (504) is fixed on the lifting plate (505).

7. A device according to claim 5, wherein: The positioning chuck (502) is movably mounted on the bottom of the positioning sleeve (2) via a servo motor (501). The sample container (507) is connected to the positioning chuck (502) via a slot (503). The sample container (507) is fixed to the lifting plate (505) via a suction cup (508).

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