Automatic fishing device for experiment

Abstract

The utility model relates to the technical field of roundworm egg detection, in particular to an automatic fishing device for experiments, which comprises a base, a centrifugal tube, a beaker, a support rod, a shell a, a shell b and a connecting rod, the base is provided with two grooves, and the grooves are connected with the centrifugal tube and the beaker; the outer side of the centrifugal tube is connected with a guide rod a which is provided with a guide groove a; the shell a is connected with an electric telescopic rod a; the driving end of the electric telescopic rod a is connected with a connecting rod a; the periphery of the connecting rod a is connected with a sleeve body a; the sleeve body a is connected with a mounting block; the shell b is connected with an electric telescopic rod b, the driving end of the electric telescopic rod b is connected with a connecting rod b, and the periphery of the connecting rod b is connected with a sleeve body b. The connecting rod is mounted at the lower end of the connecting rod b; the connecting rods are connected with metal wire rings. Components of the device can move vertically and conveniently, liquid film damage caused when roundworm eggs are fished is avoided, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of ascarid egg detection technology, and in particular to an automatic retrieval device for laboratory use. Background Technology

[0002] Currently, in determining the mortality rate of Ascaris eggs in fertilizers, any eggs containing larvae are considered live eggs, while unhatched or single-celled eggs are considered dead eggs. The formula for calculating the mortality rate of Ascaris eggs is K = 100(N1-N2) / N1, where K is the mortality rate of Ascaris eggs (%), N1 is the total number of eggs examined under a microscope, and N2 is the number of live eggs examined under a microscope after culture. In the process of extracting Ascaris eggs, the Ascaris eggs extracted from the liquid film are placed in distilled water.

[0003] Chinese Patent No. CN217677443U discloses a device for extracting Ascaris eggs, including a base and an extraction component disposed on the top surface of the base. The extraction component includes an L-shaped tube connected to the top surface of the base, with a first telescopic rod movably connected to the end of the L-shaped tube away from the base via a first spring. A sleeve is provided on the bottom surface of the first telescopic rod away from the L-shaped tube, and a second telescopic rod is movably connected to the inside of the sleeve via a second spring. A handle is provided at the bottom of the outer wall of the second telescopic rod, and a metal wire ring is hinged to the second telescopic rod below the handle. A centrifuge tube and a beaker are arranged parallel to each other on the top surface of the base directly below the metal wire ring. This invention can not only avoid the collision between the metal wire ring and the centrifuge tube wall during manual extraction, thus reducing extraction efficiency, but also prevent the liquid film from dripping from the metal wire ring during extraction, thus avoiding errors.

[0004] The existing device uses components such as a second telescopic rod and a metal wire ring to extract Ascaris eggs. However, the extraction process requires scooping the eggs from the centrifuge tube and placing them into a beaker. The second telescopic rod then moves the metal wire ring repeatedly to retrieve the eggs. The lack of a vertical guide structure during this movement leads to a lack of vertical balance, increasing the risk of damage to the egg film and reducing the device's practicality. Utility Model Content

[0005] To address the problems existing in the background technology, an experimental automatic retrieval device is proposed.

[0006] This utility model proposes an automatic retrieval device for experiments, comprising: a base, centrifuge tubes, beakers, support rods, outer shell a, outer shell b, and connecting rods;

[0007] The base has two grooves, both of which connect to the centrifuge tube and beaker; the outside of the centrifuge tube is connected to guide rod a, and guide rod a has guide groove a.

[0008] The base is connected to the support rod, the support rod is connected to the outer shell a, the outer shell a is connected to the electric telescopic rod a, the drive end of the electric telescopic rod a is connected to the connecting rod a, the outer periphery of the connecting rod a is connected to the sleeve a, the sleeve a is connected to the mounting block, and the mounting block is connected to the outer shell b.

[0009] The outer shell b is connected to the electric telescopic rod b. The drive end of the electric telescopic rod b is connected to the connecting rod b. The outer periphery of the connecting rod b is connected to the sleeve b. The outer periphery of the sleeve b is connected to the connecting block and the extension block. The connecting block is connected to the laser lamp. The laser lamp's irradiation end is connected to the irradiation plate. The extension block is connected to the support rod. The inner side of the lower end of the support rod is connected to the slider.

[0010] The connecting rod is installed at the lower end of the connecting rod b; the connecting rod is connected to the metal wire ring.

[0011] Preferably, a guide rod b is connected to the outside of the beaker, and the guide rod b is provided with a guide groove b for moving and connecting the slider.

[0012] Preferably, the outer side of the sleeve a is connected to a support, the support is connected to a guide column a, one end of the guide column a is installed on the outer shell a, and the outer shell a is hollow inside, with two circular openings a at one end to connect to the outside, for the movement of the electric telescopic rod a and the guide column a.

[0013] Preferably, the outer shell b is connected to a telescopic plate, one end of which is mounted on a support rod to guide the electric telescopic rod a to move laterally; the outer shell b is hollow inside, and one end is provided with a circular opening b to connect to the outside for the electric telescopic rod b to move.

[0014] Preferably, a guide post b is connected to the lower part of the outer shell b, and one end of the guide post b is connected to the extension block; the irradiation plate is mounted on the base.

[0015] Preferably, the metal wire ring is movably connected inside the centrifuge tube or beaker for scooping up and placing in roundworm eggs.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] This invention utilizes a sleeve (b) connected to the periphery of a connecting rod (b). The sleeve (b) is connected to a connecting block and an extension block. The extension block connects to a support rod. A slider is located on the inner side of the lower end of the support rod, within a guide groove. The guide groove is located on a guide rod connected to the outside of the centrifuge tube. A moving component causes the connecting rod (b) and sleeve (b) to move downwards, which in turn moves the support rod downwards. The support rod then moves the slider along the guide groove, facilitating increased balance in the ascaris egg retrieval process. This allows for convenient vertical movement of the components, preventing the metal wire ring from moving within the centrifuge tube or beaker and thus avoiding damage to the ascaris egg film, thereby improving the device's practicality. The connecting block connects to a laser lamp, whose light source probe illuminates the illumination plate in a straight line, further preventing imbalances during retrieval. The retrieval device moves laterally and vertically via electric telescopic rods (a and b), facilitating efficient ascaris egg retrieval and further enhancing the overall efficiency of the automatic ascaris egg retrieval device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the sleeve b and connecting block in this utility model;

[0020] Figure 3 This is a schematic diagram of the metal wire coil structure in this utility model.

[0021] Reference numerals: 1. Base; 2. Centrifuge tube; 201. Guide rod a; 3. Beaker; 4. Support rod; 5. Outer shell a; 501. Electric telescopic rod a; 502. Sleeve a; 503. Mounting block; 504. Support; 505. Guide column a; 6. Outer shell b; 601. Telescopic plate; 602. Electric telescopic rod b; 603. Connecting rod b; 604. Sleeve b; 605. Connecting block; 606. Laser lamp; 607. Extension block; 608. Support rod; 609. Guide column b; 610. Irradiation plate; 7. Connecting rod; 701. Metal wire ring. Detailed Implementation

[0022] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0023] Example 1

[0024] like Figure 1 - Figure 3As shown, this utility model proposes an automatic retrieval device for experiments, comprising: a base 1, a centrifuge tube 2, a beaker 3, a support rod 4, a housing a5, a housing b6, and a connecting rod 7; the base 1 has two grooves, both of which are connected to the centrifuge tube 2 and the beaker 3; a guide rod a201 is connected to the outside of the centrifuge tube 2, and the guide rod a201 has a guide groove a; the base 1 is connected to the support rod 4, the support rod 4 is connected to the housing a5, the housing a5 is connected to the electric telescopic rod a501, the drive end of the electric telescopic rod a501 is connected to the connecting rod a, and the outer periphery of the connecting rod a is connected to the sleeve a502, and the sleeve a502 is connected to... Mounting block 503 is connected to housing b6; housing b6 is connected to electric telescopic rod b602, the drive end of electric telescopic rod b602 is connected to connecting rod b603, the outer periphery of connecting rod b603 is connected to sleeve b604, the outer periphery of sleeve b604 is connected to connecting block 605 and extension block 607; connecting block 605 is connected to laser lamp 606, the irradiation end of laser lamp 606 is connected to irradiation plate 610; extension block 607 is connected to support rod 608, the inner side of the lower end of support rod 608 is connected to slider; connecting rod 7 is installed at the lower end of connecting rod b603; connecting rod 7 is connected to metal wire ring 701. The support rod 4 is equipped with a control switch assembly, which electrically controls the electric telescopic rods a501, b602, and laser light 606, making it easy to operate the electric telescopic rods a501, b602, and laser light 606. By moving the slider along the guide groove, the movement of the components of the retrieval device is made more stable, improving the efficiency of retrieval of roundworm eggs and avoiding damage to the liquid film when retrieval roundworm eggs.

[0025] To further explain, a guide rod b is connected to the outside of beaker 3, and the guide rod b is provided with a guide groove b for moving and connecting the slider. The ascarid eggs in centrifuge tube 2 are scooped out by the metal wire ring 701 and then moved into beaker 3, so that the ascarid eggs are placed in the liquid film, and the centrifuge tube 2 contains a saturated sodium nitrate liquid film containing ascarid eggs, while beaker 3 is filled with distilled water.

[0026] To further explain, the metal wire ring 701 is movably connected inside the centrifuge tube 2 or beaker 3 for retrieval and placement of Ascaris eggs. Three metal wire rings 701 are provided; the top and bottom two are smaller than the middle one, facilitating the retrieval of Ascaris eggs of different sizes for film preparation and placement in beaker 3. This increases the number of Ascaris eggs retrieved by the metal wire ring 701 and improves its usability.

[0027] Example 2

[0028] like Figure 1 and Figure 2 As shown, the present invention proposes an automatic retrieval device for experiments. Based on the above embodiments, this embodiment also details the specific components such as the outer shell a5 and the outer shell b6, as well as their assembly method.

[0029] To further explain, the outer side of the sleeve a502 is connected to the support 504, and the support 504 is connected to the guide post a505. One end of the guide post a505 is mounted on the outer shell a5, and the outer shell a5 is hollow inside, with two circular openings a at one end connecting to the outside for the movement of the electric telescopic rod a501 and the guide post a505. The drive end of the electric telescopic rod a501 is connected to the sleeve a502 through the through opening a, which facilitates the movement of the sleeve a502 outside the outer shell a5. The guide post a505, ​​through the through opening, enables the synchronous movement of the electric telescopic rod a501 and the sleeve a502, thereby facilitating and smoothing the lateral reciprocating movement of the electric telescopic rod a501.

[0030] To further explain, the outer shell b6 is connected to the telescopic plate 601. One end of the telescopic plate 601 is mounted on the support rod 4 to guide the lateral movement of the electric telescopic rod a501. The outer shell b6 is hollow inside, with a circular opening b at one end connecting to the outside for the movement of the electric telescopic rod b602. The telescopic plate 601 moves laterally in sync, further increasing the smoothness of lateral movement, thereby increasing the stability of the outer shell b6 during installation and use, and facilitating the use of the components of the experimental automatic retrieval device.

[0031] To further explain, a guide post b609 is connected to the lower part of the outer shell b6, and one end of the guide post b609 is connected to the extension block 607; the irradiation plate 610 is installed on the base 1. The guide post b609 is practically adjustable according to the extension and retraction of the electric telescopic rod b602, which conveniently increases the vertical stability of the electric telescopic rod b602 and further enhances the device's ability to automatically collect ascarid eggs.

[0032] The working principle of this utility model is as follows: First, the electric telescopic rod a501 is activated. The driving end of the electric telescopic rod a501 causes the connecting rod a to move laterally. The connecting rod a drives the sleeve a502 to move laterally. The sleeve a502 drives the mounting block 503. The mounting block 503 drives the outer shell b6, causing the outer shell b6 to move above the centrifuge tube 2. Then, the electric telescopic rod b602 is activated. The driving end of the electric telescopic rod b602 causes the connecting rod b603 to move vertically. The connecting rod b603 drives the sleeve b604. The sleeve b604 drives the outer connecting block 605 and the extension block 607, causing the connecting block 605 and the extension block 607 to move laterally downward. While the connecting block 605 is moving downward, the laser lamp 606 is turned on. The laser lamp 606 illuminates the irradiation plate 610, ensuring the downward movement of the laser lamp through a straight line. The movement proceeded without deviation, causing the extension block 607 to move the lower support rod 608 downwards. The inner slider of the support rod 608 moved into the guide groove, and the slider moved along the guide groove, causing the lower end of the connecting rod b603 to drive the connecting rod 7. The connecting rod 7 then drove the metal wire ring 701 downwards into the centrifuge tube 2. Once inside the centrifuge tube 2, the internal liquid film was retrieved. Then, the electric telescopic rod b602 was moved upwards, and the electric telescopic rod a501 was moved vertically onto the beaker 3, simultaneously retrieving the liquid film and placing it into the beaker 3. This process was repeated, with some saturated nitric acid solution added to the centrifuge tube 2 during the operation. The operator used a stirring tool to stir the contents of the centrifuge tube 2. The nitric acid solution was gradually increased according to the retrieval operation until no Ascaris eggs were observed on the liquid film smear under a low-power microscope.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An automatic retrieval device for experiments, characterized in that, include: Base (1); Base (1) has two grooves, both of which are connected to centrifuge tube (2) and beaker (3); guide rod a (201) is connected to the outside of centrifuge tube (2), and guide groove a is provided on guide rod a (201); The base (1) is connected to the support rod (4), the support rod (4) is connected to the outer shell a (5), the outer shell a (5) is connected to the electric telescopic rod a (501), the drive end of the electric telescopic rod a (501) is connected to the connecting rod a, the outer periphery of the connecting rod a is connected to the sleeve a (502), the sleeve a (502) is connected to the mounting block (503), and the mounting block (503) is connected to the outer shell b (6); The outer shell b(6) is connected to the electric telescopic rod b(602). The driving end of the electric telescopic rod b(602) is connected to the connecting rod b(603). The outer periphery of the connecting rod b(603) is connected to the sleeve b(604). The outer periphery of the sleeve b(604) is connected to the connecting block (605) and the extension block (607). The connecting block (605) is connected to the laser lamp (606). The irradiation end of the laser lamp (606) is connected to the irradiation plate (610). The extension block (607) is connected to the support rod (608). The inner side of the lower end of the support rod (608) is connected to the slider. And a connecting rod (7), which is installed at the lower end of the connecting rod b (603); the connecting rod (7) is connected to the metal wire ring (701).

2. The experimental automatic retrieval device according to claim 1, characterized in that, The outer side of the beaker (3) is connected to the guide rod b, which is provided with a guide groove b for moving and connecting the slider.

3. The experimental automatic retrieval device according to claim 1, characterized in that, The outer side of the sleeve a (502) is connected to the support (504), the support (504) is connected to the guide column a (505), one end of the guide column a (505) is installed on the outer shell a (5), and the outer shell a (5) is hollow inside, with two circular openings a at one end to connect to the outside, for the movement of the electric telescopic rod a (501) and the guide column a (505).

4. The experimental automatic retrieval device according to claim 3, characterized in that, The outer shell b (6) is connected to the telescopic plate (601). One end of the telescopic plate (601) is mounted on the support rod (4) to guide the electric telescopic rod a (501) to move laterally. The outer shell b (6) is hollow inside and has a circular opening b at one end to connect to the outside for the electric telescopic rod b (602) to move.

5. The experimental automatic retrieval device according to claim 4, characterized in that, A guide post b (609) is connected to the bottom of the outer shell b (6), and one end of the guide post b (609) is connected to the extension block (607); the irradiation plate (610) is mounted on the base (1).

6. The experimental automatic retrieval device according to claim 1, characterized in that, The wire ring (701) is movably connected to the inside of the centrifuge tube (2) or beaker (3) for scooping up and putting in roundworm eggs.

Images