Syringe horizontal rotor

Abstract

The utility model discloses a syringe horizontal rotor, including the mounting disc, is established with rotor installation groove on the side of mounting disc, is connected with the pivot on the both sides wall of rotor installation groove, is rotatably connected with the rotor on the pivot, the rotor includes the cover and the casing, is provided with the syringe between the cover and the casing, the syringe includes the needle cylinder, needle plug and piston rod, the piston rod is inserted in the needle cylinder, the needle plug is sleeved on the top of needle cylinder, the inner wall of casing is formed with the locating boss, the locating boss is located below needle cylinder, and the bottom edge of needle cylinder is limited, the utility model discloses the locating boss is formed on the inner wall of casing, and the moving distance of needle cylinder is limited to locating boss, and the depth of insertion between needle cylinder and piston rod is positioned further, the liquid pressure in needle cylinder is reduced, the problem that sample leakage is caused by the needle plug ejection due to excessive liquid pressure is avoided, and the sealing property of syringe is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal rotor technology, specifically to a horizontal rotor for a syringe. Background Technology

[0002] Horizontal centrifuges are specialized equipment used for sample centrifugation. During rotation, the rotor is kept horizontal by centrifugal force. When a syringe is placed directly inside the rotor, the sample inside is also centrifuged due to the rotor's rotation. Simultaneously, the syringe piston rod gradually inserts into the syringe barrel, increasing the liquid pressure. When this pressure exceeds the friction of the syringe plug, it pushes the plug out, causing sample leakage. Therefore, to ensure the syringe's seal and reduce the insertion depth of the piston rod into the syringe barrel, a horizontal rotor is designed for this syringe. Utility Model Content

[0003] The purpose of this invention is to provide a horizontal rotor for a syringe. By forming a positioning boss on the inner wall of the housing, the positioning boss limits the movement distance of the syringe barrel and further positions the insertion depth between the syringe barrel and the piston rod. This reduces the liquid pressure inside the syringe barrel, avoids the problem of excessive liquid pressure pushing out the needle plug and causing sample leakage, and ensures the sealing of the syringe.

[0004] This utility model provides the following technical solution: a horizontal rotor for a syringe, including a mounting plate, a rotor mounting groove is provided on the side of the mounting plate, a rotating shaft is connected to the two side walls of the rotor mounting groove, a rotor is rotatably connected to the rotating shaft, the rotor includes a cover and a housing, a syringe is disposed between the cover and the housing, the syringe includes a syringe barrel, a needle plug and a piston rod, the piston rod is inserted into the syringe barrel, the needle plug is sleeved on the top of the syringe barrel, a positioning boss is formed on the inner wall of the housing, the positioning boss is located below the syringe barrel, and limits the bottom edge of the syringe barrel.

[0005] Furthermore, an inner cover plate is formed at the lower end of the cover body, and an outer insert plate is formed at the upper end of the shell. The inner cover plate and the outer insert plate are interlocked with each other, and the outer wall of the inner cover plate and the inner wall of the outer insert plate are fitted together.

[0006] Furthermore, the lower end of the outer surface of the cover is formed with anti-slip texture to increase the gripping force on the cover, making it easier to separate and disassemble the cover and the shell, and preventing slippage.

[0007] Furthermore, a rotating shaft mounting groove is provided on the side of the mounting plate. The rotating shaft mounting groove is located between adjacent rotor mounting grooves. A rotating shaft is inserted and fixed at both ends of the rotating shaft mounting groove. The rotating shaft guides the rotation of the rotor, enabling the rotor to rotate along the rotating shaft. When the rotor rotates, the centrifugal force keeps the rotor in a horizontal state.

[0008] Furthermore, a plug-in surface is formed on the surface of the housing, and a step is formed between the plug-in surface and the surface of the housing. A rotating groove is formed at the upper end of the plug-in surface. The rotating groove is used to engage with the rotating shaft. The rotor is easy to install and disassemble through the cooperation of the rotating groove and the rotating shaft.

[0009] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: by forming a positioning boss on the inner wall of the shell, the positioning boss limits the movement distance of the syringe, further positioning the insertion depth between the syringe and the piston rod, reducing the liquid pressure in the syringe, avoiding the problem of excessive liquid pressure pushing out the needle plug and causing sample leakage, and ensuring the sealing of the syringe. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0011] Figure 1 This is a perspective view of the overall structure of this utility model;

[0012] Figure 2 This is a top view of the overall structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the rotor rotation state of this utility model;

[0014] Figure 4 This is a perspective view of the rotor of this utility model;

[0015] Figure 5 This is a cross-sectional view of the rotor of this utility model;

[0016] In the diagram: 1. Mounting plate; 11. Rotor mounting slot; 12. Shaft mounting slot; 2. Rotor; 21. Cover; 211. Inner cover plate; 22. Housing; 221. Rotating slot; 222. Insertion surface; 223. Outer insert plate; 224. Positioning boss; 3. Shaft; 4. Syringe; 41. Needle plug; 42. Syringe; 43. Piston rod. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1 to 5 This utility model provides a technical solution: a horizontal rotor for a syringe, including a mounting plate 1. The mounting plate 1 has evenly distributed rotor mounting grooves 11 on its side. Rotating shafts 3 are riveted and fixed to the side walls of the rotor mounting grooves 11. A rotor 2 is rotatably connected to the rotating shafts 3. The side of the rotor 2 is sleeved on the rotating shafts 3. The rotor 2 includes a cover 21 and a housing 22. The cover 21 is inserted into the upper end of the housing 22. A syringe 4 is disposed between the cover 21 and the housing 22. The syringe 4 includes a syringe barrel 42, a needle plug 41, and a piston rod 43. The piston rod 43 is inserted into the syringe barrel 42, and the needle plug 41 is sleeved on the top of the syringe barrel 42, tightly sealing the upper end of the syringe barrel 42. The inner wall of the casing 22 is formed with a positioning boss 224, which is located below the syringe 42 and limits the bottom edge of the syringe 42. The positioning boss 224 positions the syringe 42 and prevents the syringe 42 from being pressed against the piston rod 43 by centrifugal force when the rotor 2 rotates, which would affect the sealing between the syringe 42 and the needle plug 41. The positioning boss 224 limits the movement stroke of the syringe 42 in the rotor 2, which limits the insertion depth between the syringe 42 and the piston rod 43, reduces the pressure in the syringe 42, prevents sample leakage in the syringe 42, and further ensures the sealing of the syringe 4.

[0019] like Figure 5 As shown, the lower end of the cover 21 is formed with an inner cover plate 211, and the upper end of the shell 22 is formed with an outer insert plate 223. The inner cover plate 211 and the outer insert plate 223 are interlocked with each other. The inner cover plate 211 and the outer insert plate 223 are tightly fitted together. The outer wall of the inner cover plate 211 and the inner wall of the outer insert plate 223 are attached together, which enhances the connection strength between the cover 21 and the shell 22 and makes the connection between the cover 21 and the shell 22 stable when centrifugally rotating.

[0020] like Figure 4 As shown, the lower end of the outer surface of the cover 21 is formed with anti-slip texture. The anti-slip texture increases the gripping force between the cover 21 and the housing 22, making it easier to remove the cover 21 from the housing 22.

[0021] like Figure 2As shown, a rotating shaft mounting groove 12 is also provided on the side of the mounting plate 1. The rotating shaft mounting groove 12 is located between adjacent rotor mounting grooves 11. The rotating shaft mounting groove 12 is arc-shaped. A rotating shaft 3 is inserted and fixed at both ends of the rotating shaft mounting groove 12. The other end of the rotating shaft 3 is located on the inner wall of the rotor mounting groove 11.

[0022] like Figure 3 and 4 As shown, a plug-in surface 222 is formed on the surface of the housing 22. A step is formed between the plug-in surface 222 and the surface of the housing 22. The plug-in surface 222 is a foolproof surface, which guides the plug-in positioning of the housing 22 and the mounting plate 1. A rotating groove 221 is formed at the upper end of the plug-in surface 222. The rotating groove 221 is used to fasten onto the rotating shaft 3. The rotating groove 221 is a half-waist-shaped hole. The end of the rotating groove 221 is arc-shaped, so that the rotating groove 221 can rotate around the rotating shaft 3, and the rotor 2 is in a horizontal state under the centrifugal force.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A horizontal rotor for a syringe, comprising a mounting plate, wherein a rotor mounting groove is formed on the side of the mounting plate, and rotating shafts are connected to the two side walls of the rotor mounting groove, and a rotor is rotatably connected to the rotating shafts, characterized in that: The rotor includes a cover and a housing, and a syringe is disposed between the cover and the housing. The syringe includes a syringe barrel, a needle plug and a piston rod. The piston rod is inserted into the syringe barrel and the needle plug is sleeved on the top of the syringe barrel. A positioning boss is formed on the inner wall of the housing. The positioning boss is located below the syringe barrel and limits the bottom edge of the syringe barrel.

2. The horizontal rotor of the syringe according to claim 1, characterized in that: The lower end of the cover is formed with an inner cover plate, and the upper end of the shell is formed with an outer insert plate. The inner cover plate and the outer insert plate are interlocked, and the outer wall of the inner cover plate and the inner wall of the outer insert plate are fitted together.

3. The horizontal rotor of the syringe according to claim 1, characterized in that: The lower end of the outer surface of the cover is formed with anti-slip texture.

4. The horizontal rotor of the syringe according to claim 1, characterized in that: The mounting plate is also provided with a shaft mounting groove on its side. The shaft mounting groove is located between adjacent rotor mounting grooves, and a shaft is inserted and fixed at both ends of the shaft mounting groove.

5. The horizontal rotor of the syringe according to claim 1, characterized in that: The surface of the housing is formed with an insertion surface, and a step is formed between the insertion surface and the surface of the housing. The upper end of the insertion surface is formed with a rotating groove, which is used to engage with the rotating shaft.

Images