Centrifugal tube with filtering structure

Abstract

The utility model discloses a centrifuge tube with a filtering structure, which comprises a centrifuge tube main body, the upper end of the centrifuge tube main body is fixedly connected with a positioning ring, the two sides of the inside of the positioning ring are both provided with assembling grooves, the inside of the centrifuge tube main body is sleeved with a filtering tube, the upper end of the surface of the filtering tube is sleeved with a fixing ring, and the fixing ring is provided with an opening. Grooves are formed in the two sides of the fixing ring correspondingly, semicircular fixing holes and positioning assemblies are formed in the grooves, and the positioning assemblies are located in the assembling grooves. The centrifugal tube has the advantage that the filter component is convenient to disassemble and assemble, and solves the problems that the filter component of the conventional centrifugal tube is inconvenient to disassemble and assemble, the disassembly steps of the filter component are tedious and the cleaning difficulty is increased when people need to clean the centrifugal tube, and the filter component cannot be locked and fixed after the filter component and the centrifugal tube are assembled, so that the cleaning difficulty is increased. The filtering assembly and the centrifugal tube are easy to separate and fall off in the centrifugal process, so that the safety of the centrifugal tube is influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifuge tubes, in particular to a centrifuge tube with a filtering structure. Background Art

[0002] The function of the centrifuge tube is to prevent the leakage of samples, especially when used for radioactive or highly corrosive samples. It is very important to prevent the leakage of samples. During the experiment, it is often necessary to separate solids and liquids to extract certain components in order to prepare the required samples. Therefore, centrifuge tubes with a filtering structure are used to facilitate solid-liquid separation.

[0003] However, there are some problems with the existing technology: the existing centrifuge tube is not easy to disassemble and assemble the filter assembly. When people need to clean the centrifuge tube, the filter assembly disassembly steps are cumbersome, which increases the difficulty of cleaning. After the filter assembly and the centrifuge tube are assembled, the filter assembly cannot be locked and fixed, which easily causes the filter assembly and the centrifuge tube to separate and fall off during the centrifugation process, affecting its safety. Therefore, we propose a centrifuge tube with a filtering structure. Utility Model Content

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a centrifuge tube with a filtering structure, which has the advantage of easy disassembly and assembly of the filtering assembly, and solves the problem that the existing centrifuge tube is not convenient for disassembly and assembly of the filtering assembly. When people need to clean the centrifuge tube, the disassembly steps of the filtering assembly are cumbersome, which increases the difficulty of cleaning. After the filtering assembly and the centrifuge tube are assembled, the filtering assembly cannot be locked and fixed, which easily causes the filtering assembly and the centrifuge tube to separate and fall off during the centrifugation process, affecting its safety.

[0005] The utility model is achieved in that a centrifuge tube with a filtering structure comprises:

[0006] A centrifuge tube body, wherein the upper end of the centrifuge tube body is fixedly connected to a positioning ring, and both sides of the interior of the positioning ring are provided with assembly grooves, a filter tube is sleeved inside the centrifuge tube body, and a fixing ring is sleeved on the upper end of the surface of the filter tube, and both sides of the fixing ring are provided with grooves, and a semicircular fixing hole is provided inside the groove;

[0007] A positioning assembly is located in the assembly groove and is used for assembling and disassembling the filter tube.

[0008] The positioning assembly includes a shell, one side of the shell is fixedly connected to a tightening spring, one end of the tightening spring is fixedly connected to a movable plate, one side of the movable plate is fixedly connected to a fixing column, one end of the fixing column extends to the outside of the shell and is fixedly connected to a semicircular convex ball, and the surface of the semicircular convex ball extends into the semicircular fixing hole.

[0009] The upper end of the filter tube is provided with a sealing cover, a sealing gasket is provided at the connection between the upper end of the inner part of the sealing cover and the upper end of the filter tube, the upper end of the filter tube surface is provided with an external thread, and the interior of the sealing cover is provided with an internal thread adapted to the external thread.

[0010] The upper end and the lower end of the movable plate are both fixedly connected with a guide block, the interior of the guide block is slidably connected with a guide rod, and the two ends of the guide rod are fixedly connected to the two sides of the interior of the shell.

[0011] The upper ends of both sides of the interior of the positioning ring are fixedly connected with L-shaped protrusions, and the surfaces of the L-shaped protrusions are slidably connected with the interior of the groove.

[0012] The number of the tightening springs is four groups, and the four groups of tightening springs are arranged in a rectangular shape on the movable plate.

[0013] A filter screen is sleeved inside the filter tube, and a filter hole is opened at the lower end of the filter tube surface.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. When the centrifuge tube body and the filter tube need to be assembled, first insert the filter tube downward into the centrifuge tube body through the positioning ring. At this time, the fixing ring on the filter tube will penetrate into the positioning ring, and the groove on the fixing ring will engage with the L-shaped protrusion. At the same time, the inside of the groove will contact the surface of the semicircular convex ball. When the semicircular fixing hole on the groove moves to be flush with the semicircular convex ball, the tightening spring is squeezed outward, and the tightening spring will push the movable plate to move outward.

[0016] 2. The movable plate drives the guide block to slide on the guide rod, and at the same time the movable plate drives the fixed column to move outward. The fixed column drives the semicircular convex ball to be inserted into the semicircular fixed hole, so that the centrifuge tube body and the filter tube can be assembled and fixed. When the filter tube needs to be disassembled and cleaned, it is only necessary to pull the filter tube upward. Since the semicircular fixed hole and the semicircular convex ball are arc-shaped, only a certain upward pulling force is required to complete the disassembly.

[0017] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the expanded structure of the sealing cover and the filter tube provided by the utility model;

[0020] Figure 3 This is a cross-sectional view of the shell structure provided by the utility model;

[0021] Figure 4 This is a schematic diagram of the positioning ring structure provided by the utility model.

[0022] In the figure: 1. Centrifuge tube body; 2. Positioning ring; 3. Assembly groove; 4. Filter tube; 5. Fixing ring; 6. Groove; 7. Semicircular fixing hole; 8. Positioning assembly; 81. Housing; 82. Tightening spring; 83. Moving plate; 84. Fixing column; 85. Semicircular convex ball; 9. Sealing cover; 10. External thread; 11. Internal thread; 12. Guide block; 13. Guide rod; 14. L-shaped convex block; 15. Filter hole. DETAILED DESCRIPTION

[0023] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0024] like Figures 1 to 4 As shown, the embodiment of the present invention provides a centrifuge tube with a filtering structure, comprising:

[0025] A centrifuge tube body 1 is provided with a positioning ring 2 fixedly connected to the upper end of the centrifuge tube body 1. Both sides of the positioning ring 2 are provided with assembly grooves 3. A filter tube 4 is sleeved on the inside of the centrifuge tube body 1. A fixing ring 5 is sleeved on the upper end of the surface of the filter tube 4. Grooves 6 are provided on both sides of the fixing ring 5. A semicircular fixing hole 7 is provided inside the groove 6.

[0026] The positioning assembly 8 is located in the assembly groove 3 and is used for assembling and disassembling the filter tube 4 .

[0027] Furthermore, the positioning assembly 8 includes a shell 81, one side of the interior of the shell 81 is fixedly connected to a tightening spring 82, one end of the tightening spring 82 is fixedly connected to a movable plate 83, one side of the movable plate 83 is fixedly connected to a fixing column 84, one end of the fixing column 84 extends to the outside of the shell 81 and is fixedly connected to a semicircular convex ball 85, the surface of the semicircular convex ball 85 extends into the semicircular fixing hole 7, when the centrifuge tube body 1 needs to be assembled with the filter tube 4, the filter tube 4 is first inserted downward into the centrifuge tube body 1 through the positioning ring 2.

[0028] Through the mutual cooperation of the tightening spring 82, the movable plate 83 and the fixed column 84, the semicircular convex ball 85 is easily reset during use, thereby solving the problem that the semicircular convex ball 85 is difficult to reset during use.

[0029] Furthermore, a sealing cover 9 is provided at the upper end of the filter tube 4, and a sealing gasket is provided at the connection between the upper end of the interior of the sealing cover 9 and the upper end of the filter tube 4. An external thread 10 is provided at the upper end of the surface of the filter tube 4, and an internal thread 11 is provided inside the sealing cover 9 that is compatible with the external thread 10. At this time, the fixing ring 5 on the filter tube 4 will penetrate into the positioning ring 2, and at the same time, the groove 6 on the fixing ring 5 will be clamped with the L-shaped protrusion 14.

[0030] The cooperation between the external thread 10 and the internal thread 11 facilitates the installation and fixation of the sealing cover 9 and the filter tube 4 during use, thereby solving the problem that the sealing cover 9 and the filter tube 4 are prone to slipping during use.

[0031] Furthermore, the upper and lower ends of the movable plate 83 are fixedly connected to the guide block 12, and the internal sliding connection of the guide block 12 is the guide rod 13. The two ends of the guide rod 13 are fixedly connected to the two sides of the interior of the shell 81. At the same time, the interior of the groove 6 will contact the surface of the semicircular convex ball 85. When the semicircular fixing hole 7 on the groove 6 moves to be flush with the semicircular convex ball 85, the tightening spring 82 is squeezed outward, and the tightening spring 82 will push the movable plate 83 to move outward.

[0032] Through the mutual cooperation of the guide rod 13 and the guide block 12, the movable plate 83 is ensured to move smoothly during use, thereby solving the problem that the movable plate 83 is prone to shaking during use and increasing the stability of the movable plate 83.

[0033] Furthermore, the upper ends of both sides of the interior of the positioning ring 2 are fixedly connected with L-shaped protrusions 14, the surface of the L-shaped protrusions 14 is slidably connected to the interior of the groove 6, and the movable plate 83 drives the guide block 12 to slide on the guide rod 13, and at the same time the movable plate 83 drives the fixed column 84 to move outward.

[0034] Through the mutual cooperation between the L-shaped protrusion 14 and the groove 6, the positioning and installation of the positioning ring 2 and the fixing ring 5 are facilitated during use, and the positioning ring 2 and the fixing ring 5 are prevented from rotating during use, thereby increasing the stability of the positioning ring 2 and the fixing ring 5 during use.

[0035] Furthermore, there are four groups of tightening springs 82, which are arranged in a rectangular shape on the movable plate 83. The fixing column 84 drives the semicircular convex ball 85 to be inserted into the semicircular fixing hole 7, so that the centrifuge tube body 1 and the filter tube 4 can be assembled and fixed.

[0036] The provision of the sealing gasket enhances the sealing performance of the sealing cover 9 and the filter tube 4 during use, thereby preventing leakage of the sealing cover 9 and the filter tube 4 due to poor sealing during use.

[0037] Furthermore, a filter screen is sleeved on the inside of the filter tube 4, and a filter hole 15 is opened at the lower end of the surface of the filter tube 4. When the filter tube 4 needs to be disassembled and cleaned, it is only necessary to pull the filter tube 4 upward. Since the semicircular fixing hole 7 and the semicircular convex ball 85 are arc-shaped, only a certain upward pulling force is required to complete the disassembly.

[0038] By setting the filter screen, the filter tube 4 plays a role in facilitating the control of the filter mesh number during use, solving the problem that the filter tube 4 is inconvenient to control the filter mesh number during use, and facilitating the replacement of filter screens of different specifications in the filter tube 4.

[0039] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifuge tube with a filtering structure, characterized in that: include: A centrifuge tube body (1), wherein the upper end of the centrifuge tube body (1) is fixedly connected to a positioning ring (2), both sides of the interior of the positioning ring (2) are provided with assembly grooves (3), a filter tube (4) is sleeved inside the centrifuge tube body (1), a fixing ring (5) is sleeved on the upper end of the surface of the filter tube (4), both sides of the fixing ring (5) are provided with grooves (6), and a semicircular fixing hole (7) is provided inside the groove (6); A positioning assembly (8), the positioning assembly (8) is located in the assembly groove (3), and the positioning assembly (8) is used for assembling and disassembling the filter tube (4).

2. The centrifuge tube with a filtering structure according to claim 1, characterized in that: The positioning assembly (8) includes a housing (81), a tensioning spring (82) fixedly connected to one side of the interior of the housing (81), a movable plate (83) fixedly connected to one end of the tensioning spring (82), a fixed column (84) fixedly connected to one side of the movable plate (83), one end of the fixed column (84) extending outside the housing (81) and fixedly connected to a semicircular convex ball (85), the surface of the semicircular convex ball (85) extending into the semicircular fixing hole (7).

3. The centrifuge tube with a filtering structure according to claim 1, characterized in that: The upper end of the filter tube (4) is provided with a sealing cover (9), a sealing gasket is provided at the connection between the upper end of the interior of the sealing cover (9) and the upper end of the filter tube (4), an external thread (10) is provided on the upper end of the surface of the filter tube (4), and an internal thread (11) adapted to the external thread (10) is provided inside the sealing cover (9).

4. The centrifuge tube with a filtering structure according to claim 2, characterized in that: The upper and lower ends of the movable plate (83) are fixedly connected to a guide block (12), the interior of the guide block (12) is slidably connected to a guide rod (13), and both ends of the guide rod (13) are fixedly connected to both sides of the interior of the housing (81).

5. The centrifuge tube with a filtering structure according to claim 1, characterized in that: The upper ends of both sides of the interior of the positioning ring (2) are fixedly connected with L-shaped protrusions (14), and the surfaces of the L-shaped protrusions (14) are slidably connected to the interior of the groove (6).

6. The centrifuge tube with a filtering structure according to claim 2, characterized in that: The number of the tightening springs (82) is four groups, and the four groups of tightening springs (82) are arranged in a rectangular shape on the movable plate (83).

7. The centrifuge tube with a filtering structure according to claim 1, characterized in that: A filter screen is sleeved inside the filter tube (4), and a filter hole (15) is provided at the lower end of the surface of the filter tube (4).

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