RU206746U1 - SAMPLING DEVICE - Google Patents

Abstract

The utility model relates to the development of analytical and laboratory equipment for the chemical and radiation industries and can be used as a device for sampling of various volumes. To solve this problem and achieve the technical result, a sampling device is claimed, comprising a housing, an actuator located inside the housing, an actuator, a removable tip and a connecting element. The actuator is made in the form of a bellows, in which the stem is located, a spring is located inside the stem, connected to the drive of the device, and the drive contains a handle and a pressure ring, the connecting elements fasten the drive with the actuator and the drive with the housing, the locking element is installed in the stem from the side of sampling, while the parts of the device are made of corrosion-resistant alloy steel, and the device is made with the ability to work remotely using a manipulator When using the utility model, the following technical result is achieved; in aggressive environments, and due to the construction materials used, the reliability and safety of work is increased. 2 ill.

Description

The utility model relates to the development of analytical and laboratory equipment for the chemical and radiation industries, and can be used as a device for sampling of various volumes.

Known pipette with a mechanism for removing the tip (RF patent No. 2718931, IPC В01L 3/02, published on April 15, 2020 bull. No. 11), containing a mechanism for removing the tip, configured to raise the internal mechanism of the pipette relative to the body of the pipette when the user presses the button to remove the tip. This invention allows for the detachment of a disposable tip attached to a pipette cone.

The disadvantages of the above-described design are the construction materials of the pipette (plastic), as well as the impossibility of remote control of the sampling process, which makes it impossible to operate this invention in aggressive environments.

Closest to the claimed solution is a sampling device (pipette) (RF patent No. 2530119, IPC B01L 3/02, published 10.10.2014 Bull. No. 14), containing a cylinder having a distal end section, to which the pipette tip is removably attached, and a piston attached for free forward and backward extension in the cylinder chamber. The piston is retracted to suck in the fluid, and is pushed forward to extract the fluid thus sucked in. The piston comprises, on its outer periphery, a connecting groove for connecting the inner part of the cylinder chamber and the outer part of the cylinder chamber to each other when the piston is pushed forward by an amount corresponding to a dimension greater than a predetermined size, where the connecting groove is located on the outer part of the cylinder chamber when the piston is in a retracted position.

The disadvantages of the prototype include the fact that the design is based on direct manual control, and the material of the body and parts of the pipette does not allow working in aggressive environments and remotely.

The objective of the claimed utility model is to improve the reliability of work with samples and the implementation of sampling in aggressive environments.

When using the utility model, the following technical result is achieved:

the ability to work remotely (manipulator, or an automatic third-party pressure device), as a result of which the sampling can be carried out in aggressive environments;

due to the construction materials used, the reliability and safety of work is increased.

To solve this problem and achieve the technical result, a sampling device is claimed, comprising a housing, an actuator located inside the housing, an actuator, a removable tip and a connecting element. The actuator is made in the form of a bellows, in which the stem is located. Inside the stem, there is a spring connected to the drive of the device, and the drive contains a handle and a pressure ring. The connecting elements fasten the actuator with the actuator and the actuator with the housing to each other, the locking element is installed in the rod from the side of the sample intake.

Due to the design features of the proposed sampling device, a number of technical problems are solved, which makes it possible to achieve a technical result.

Due to the design features (use of a handle for transferring the device with a manipulator, a pressure ring that does not require direct human action (possibly applying force by a third-party device), it becomes possible to work with the device remotely, using a manipulator or other transfer device.

Due to the use of a locking element that closes the stem cavity when the spring returns to its original state, the ingress of the sampled liquid into the internal cavities of the device is excluded, the reliability of the device is increased and the removal of the sampled liquids from the removable tip is excluded.

Due to the selected materials (corrosion-resistant alloy steels of various grades), a high durability and performance of the sampling device is achieved when working with corrosive liquids in corrosive media (acidic or alkaline media, ionizing radiation).

The combination of these features provides us with an increase in the reliability and functionality of the proposed sampling device.

FIG. 1 shows a sectional diagram of the inventive sampling device.

FIG. 2 shows a diagram of the proposed sampling device in section in another section.

FIG. 1 and FIG. 2, the following designations are adopted:

1 - body, 2 - stem, 3 - bellows, 5 - connecting element, 6 - spring, 7 - connecting element, 8 - ring, 9 - locking element, 10 - removable tip.

Inside the body 1 there is a movable rod 2, which is connected to the body by means of a bellows 3. There is also a handle 4, which serves to carry the sampling device, connected by means of connecting elements 5 to the body. Also, by means of a spring 6, the handle is connected to the rod 2, which in turn is connected to the pressure ring 8 by means of connecting elements 7. A shut-off element 9 is installed in the rod 2 on the side of the sample intake, which closes the channel cavity in the housing element, which is connected to the rod 2 Removable tip 10 is attached to the same housing element.

The pressure ring 8 is influenced, which drives the ring 8 in motion. By transferring the force by means of the connecting elements 7, the rod 2 is set in motion, respectively, the bellows 3 is compressed, releasing the air located there through the channel in the housing element 1 from its cavity. Due to the downward movement of the rod 2, the closing element 9 also moves, as a result of which the channel opens, and air begins to escape into the space outside the sampling device through a removable tip 10. When the rod 2 is moved, the spring 6 is also stretched. When the force is removed from the pressure ring 8, the spring 6 begins to compress, pulling the rod 2, which in turn acts on the bellows 3 , which begins to unclench, the space in its internal cavity increases accordingly. The sample to be taken begins to flow into the removable tip 10 immersed in the sampled liquid. At the end of the stroke, the closure element 9 closes the channel in the housing element, thereby preventing the penetration of the sampled liquid into the internal cavities of the device.

A prototype of the sampling device was developed, the wire C2A-5 GOST 14963-78 was used as the spring material, the rest of the parts were made of steel 12X18H10T GOST 5632-72.

Based on the above, it can be concluded that as a result of the design development and modeling, the design of a new sampling device was proposed. Due to a number of design features, the device has the following features:

the ability to work remotely (due to the handle for transferring the device with a manipulator);

the ability to work in aggressive environments (due to materials and the ability to work remotely).

Claims (1)

A sampling device comprising a housing, an actuator located inside the housing, an actuator, a removable tip and a connecting element, characterized in that the actuator is made in the form of a bellows, in which the stem is located, a spring is located inside the stem, connected to the actuator of the device, and the actuator contains the handle and the pressure ring, the connecting elements fasten the actuator with the actuator and the actuator with the housing, the locking element is installed in the rod from the side of the sample intake, the device parts are made of corrosion-resistant alloy steel, and the device is configured to operate remotely using a manipulator.

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